
A124

> But the manual doesn't explain why it is wider than the others.
indeed the source of my question, and since, as you rightly pointed out,
the 68-bit size of the index register is referred to in several disjoint
places, I presumed that it was not a simple typo.
In fact, the manual does not explain in what format the data is stored
in the index register either. It only states that it will be
equivalent, whatever that means in 1's and 2's complement modes.
Very intriguing.
Alexander
-- 
Dr Alexander Supalov
Senior Software Engineer
--------------------------------------------------------------------
//// pallas / A Member of the ExperTeam Group
Pallas GmbH / Hermuelheimer Str. 10 / 50321 Bruehl / Germany
Alexander.Supalov@pallas.com / www.pallas.com
--------------------------------------------------------------------
====
[If this has been discussed here before, please point me to it.  Thanx.]
The HP49G sometimes gives incorrect answers when ->NUM performed on ratios 

of
large integers.  In the following examples, exact mode is assumed.
========== Example #1 ==========
1000000000001/1000000000002  (eleven zeros in each)
->NUM yields 1.
But the correct answer (rounded to 12 decimal places) is 0.999999999999
Admittedly, that's only off by 1 in the last place, but I thought the HP49G
had the ability to always get simple divisions correct to the last digit.
========== Example #2 ==========
199999999999499/199999999999500  (eleven 9's in each)
->NUM yields .999999999995
But the correct answer (rounded to 12 decimal places) is 1.
That's *five* off in the last place.  Not good.
========== Questions ==========
Is the problem that the integers are converted to reals before performing 

the
division?  If so, is there an easy way to obtain accurate ratios of large
integers on the HP49G?
Thanx in advance to anyone who can shed some light on this... even if it's
something blindingly obvious to all but me.
-jkh-
Joseph K. Horn
joehorn@holyjoe.net
====
> I have converted 12 new games for various HP calcs. See my website:
> http://www.noda.online.fr
Cool...
> WARNING: A bug have been reported with teh hp49 version of BomberHP,
> it can cause TTRM sometimes! I'll fix it as soon as I find teh bug.
Be sure to notify (at least me) in this NG, because I like Bomberman
(assuming itれ Bomberman, converted from the PC-game of the 

same name)....
Martin J.
====
<OT value=last one, I hope!>
Google reveals that this discussion was already had about a year ago, when 

I
thread to stop, and it eventually did.  But John Meyers has kept right on
using comp.sys.hp48 to proselytize for his religion.
reasoned posting.  Loose End 2 is my 3-month-old unanswered challenge to 
John
Meyers, which boils it all down to a single question.
+--- LOOSE END 1 ---+
|                   |
| JEAN-YVES AVENARD |
|                   |
+-------------------+
> The claim that transcendental meditation is the world's only hope
> for peace is based on the hypothesis that human thought is capable
> of producing effects at a distance.  John Meyers has stated that
> there is scientific evidence ...
>
> I don't not believe that that's what TM is about. I've never read
> anything about people influencing others with some kind of telepathy.
> It is based on the simple rule that if a certain percentage of the
> population is actively involved in peace and human evolution, then it
> will have a strong influence on others.
of work does not run into such things (fortunately for you).  Mine does
(unfortunately for me).
You are correct that TM is not telepathy, but John's own university claims
that its methods ARE based on the possibility of action at a distance:
http://www.mum.edu/m_effect/th_and_res_doj.html
Conflict Resolution through the Maharishi Effect and it uses the exact 
phrase
action at a distance referring specifically to the so-called Maharishi
Effect.
I do not know in what field Orme-Johnson got his Ph.D., but his claim that
radio and gravity are propagated instantaneously by action at a 
distance
(rather than by propagation at the speed of light) is contrary to modern
(Corvallis, Oregon):
http://zebu.uoregon.edu/~js/glossary/gravity_waves.html
> Put in a room 100 angry Joe Horn's. A fight is likely to occur.
Nah.  I always agree with me.  >:-)
> Put 99 Joe Horns and 1 all-peace JHM course of events may change.
John's recent postings railing against those who disagree with him 
(especially
me) *exude* peace, don't they?  Like the times he disdained my status as an
ordained minister.  Shows real tolerance doesn't it?  (Forgive me if 
you
meant all-peace facetiously.)
> In any case, Joe as you're the voice of the Church and its people
> (as a priest), I find your last posts extremely disturbing: You are
> preaching violence and death.
Since I am being misrepresented here, let me set the record straight. I
promote the right of sovereign nations to self defense against unjust
aggressors, using whatever force is necessary to protect their own people's
lives, liberty, and property, even if that be deadly force.  An unjust
aggressor freely and willingly forfeits his right to life and brings his 
own
destruction upon himself; his death is not the fault of those who are 
trying
to stop his attack.  Violence and death?  Au contraire!  I promote the
active stopping of anyone who would rob peace and life from us.  Same 
reason
that policemen carry guns in the USA: not to cause violence and death, but 

to
promote peace and protect life.  Thet's why policemen and called peace
officers and one model of pistol is called the peace maker.  I 
promote
peace, but not pacifism.  In simple terms, if you start violence against 
me,
I'll stop you, with violence if necessary, even if it kills you.  Your 
death
is not my goal; my goal is the STOPPING of your attack.  Period.  If that
stoppage kills you, or doesn't kill you, I don't care, as long as you stop
attacking me.  THAT is what I promote.  I hope it's clear now.
Secondly, how did France obtain the peace that it now enjoys?  How did the
United States obtain its peace?  How did all of today's peaceniks obtain 
their
freedom to protest the war?  Through the blood, sweat and tears of 
thousands
of people who were willing to FIGHT for their rights and the rights of 
their
posterity.  They WON that peace and freedom through military VICTORY.  Not
through yogic flying and self-hypnosis inside gold domes.
Thirdly, my ONLY GOAL is for John Meyers to stop proselytizing here for his
religion, because I think it's intrinsically flawed in a way that's 
actually
dangerous.  Pointing out the bad things that Christians have done over the
past 2000 years has no bearing on that GOAL, since I do not preach
Christianity on this newsgroup, but keep it where it belongs, namely my
church's pulpit and my website's homily archive.  As soon as John stops
posting sermons and sticks to the newsgroup's topics, OR warns the reader 

with
OFF TOPIC indicators, then of course I won't pester him about his personal
beliefs.
I hope the above ties up that loose end.
+-- LOOSE END 2 --+
|                 |
|  THE CHALLENGE  |
|                 |
+-----------------+
Here's the deal.  Three months ago (17 December 2002) I simplified the 
debate
John:
May I propose a new strategy that's much simpler and less stressful?  All 

it
takes is for each of us to answer one question:
QUESTION FOR YOU: What would it take to convince YOU that thoughts alone
CANNOT have any effect at a distance, no matter how deep those thoughts 
are,
or of what, or by whom, or how many, etc?
YOUR ANSWER: ________________________________
QUESTION FOR ME: What it would take to convince ME that thoughts CAN have 

an
effect at a distance?
journal.  By mainstream scientific journal I mean any of the hundreds 

of
online journals listed by Stanford at http://www4.tdnet.com/stanford/ or by
MEDeZONE at http://www.medezone.com/173.html or by the NIH at
http://www.nih.gov/science/journals/ or the Phoenix Foundation at
http://www.bioport.org/readroom/journal.htm or any similarly acclaimed and
accepted journal.  I will NOT accept any other evidence.
If you can provide what I require to be convinced, then you win, and I'll
abandon my belief that thoughts do nothing.
If I can provide what you require to be convinced, then I win and you'll
abandon your belief that thoughts can have external effects.
If neither of us can provide what the other requires, then further debate 

will
probably only add heat and not light.  In that case, it's probably best to
agree to disagree.
If anything above is unacceptable, please let me know, and read no further.
Otherwise, I eagerly await your answer to #1 above.  I hope this leads to 

more
light and less heat.
John was presented this challenge three months ago (17 December 2002) and 

he
has yet to reply to EITHER part.  It remains a loose end.
</OT>
-Joe-
====
> my belief that thoughts do nothing.
If prayers are thoughts, and people pray for something to happen,
then thoughts can do something, if you believe in prayers...
Jordi.
====
Not the human thoughts, but God listens to prayers
and He does the deeds, not man's thoughts
There is a huge New Age difference in these things!
>
> my belief that thoughts do nothing.
>
> If prayers are thoughts, and people pray for something to happen,
> then thoughts can do something, if you believe in prayers...
>
> Jordi.
what other calculator has a website of the likes of.... hpcalc.org  ?
what other calculator has so many web  stores devoted to selling cards and
accesories for only a single calculator ???
what other calculator supports such flexibility, assembly-language 
programming
capability and open-system architecture ??
As a lecturer at University, I get to see all sorts of calculators that the
students bring in.... but I am yet to see one that seriously competes with 

hp
in the OVERALL analysis.... some have one thing and some another but NONE 

of
them have everything just right.
Even if they do go off the market entirely.... all that will happen is that
their value will APPRECIATE with the years.
Do you know of any other calculator that can claim this ???? All others are
forgotten as the models change.... but there will always be a buyer for an 

HP48
====
> what other calculator has a website of the likes of.... hpcalc.org  ?
The ti has ticalc.org, and calc.org.  Much of the basic programs on
ticalc.org is crap.  The new archivers for ticalc.org are quite
excellent.  They've been going through the pending queue at a couple
hundred files a day now.  How fast does hpcalc.org take to update
files?  I do like hpcalc's more subject specific organization.
Calc.org is lagging right now. 
> what other calculator has so many web  stores devoted to selling cards 
and
> accesories for only a single calculator ???
I would care if my 89 had an expansion bay.  But there are other
peripherals that can be found.  Radio link kits, devices for taking
external data, overhead projectors, infared links, ect
> what other calculator supports such flexibility, assembly-language 
programming
> capability and open-system architecture ??
The oncalc developement utilities for the ti are lacking.  But the PC
based utilities are excellent.  Please look at tigcc.ticalc.org.  I
would not want to develop assembly on calc.
There was recently released an IDE, Assembler, C compiler package for
on calc use.
As of right now the ti89 rom has more than a thousand rom calls
available, Yes it is a very open system architecture.  There are
deliberate restrictions created by ti on the 68k series, but those are
easy to get past.
Assembly is very flexible on the 89.  It is possible to hook into the
hps entry line, watch what the user types and offer auto-completion
suggestions?  This is very possible on the 89.  Accessing commands
with pure typing and auto completion is faster than soft menus.
If You are looking to start a flame war Please come into ti territory:
http://pub26.ezboard.com/btichessteamhq
or
And My page where you can find a) auto completion for the home entry
line, and b) a kick-ass equation writer.  And much more for the ti89:
www.calvin.edu/~sstear70/
-Samuel Stearley
====
PLEASE do not start it!
Not again one of those fight to the death 
against all barbarians! (they are, aren't they?)
You are asking for trouble...
Let us see the silly responses..   :-)
!Demeter!
====
Just a quick apology.  Wheather your looking for a flame war or not
you are more then welcome to post questions at either of those forums.
 The ezboard one is devoted to c for the calc.
-Samuel
====
> As a lecturer at University, I get to see all sorts of calculators that 

the
> students bring in.... but I am yet to see one that seriously competes with 

hp
> in the OVERALL analysis.... some have one thing and some another but NONE 

of
> them have everything just right.
The HP48 obviously doesn't have everything just right, either. If it
did, there would be no reason to release the HP49G. That is not to say
that the HP48 is not a good calculator.
> All others are forgotten as the models change....
That's called progress.
--
Bhuvanesh
====
>If You are looking to start a flame war Please come into ti territory:
Indeed NOT... I am NOT looking to start any kind of war.
Even though I like hp calculators... I am not a fanatic... I bought hp 
because
I genuinely believed it was the best of the best..... I have had years 

of joy
using it... I have NEVER had a hardware problem of any kind.....and there 

are
STILL things I am discovering about it... even after owning it for 13 

years
!!!!!!
you have given me a lot of good reasons to explore a TI89.... so my 
challenge
was well met.
I own both TI and Casio calculators which I have picked up over the years, 

in
addition to my hp's.... the TI, I have is not a graphing model, just a 
plain
basic solar powered scientific.... but I still like it for what it is.... I
used it in exams when I was a student back in 1989 and the  hp wasn't 
allowed
in the exam
I would be willing to buy another TI ... you advocating the TI89..... is 
that
the best of TI ? ?
I am sorry if you found my post insulting or inciting.
====
I found out that you can send more than one file at a time just check
them off, you have to keep clicking recieve on the pc for each file
though. That's on emu48.
Stan 
>
>>What's the best way to back up the whole calculator to a computer. All
>>ports and files and directories, in the most simplest way of course.
>
>I haven't found an efficient way to do it yet, but for port1 and port2
>I use the Connectivity Kit, that comes with Debug4x, in the PC and in
>the calculator I use the Filer.
>
>In the file menu of the Connectivity Kit, I look for uploading to the
>PC and then type the name of the file to receive.
>I browse the port in the filer and when I'm in the file I want to
>backup, I press XSEND (it's in the fourth page, pressing NEXT three
>times.) Then just press OK in the PC.
>
>It's the best way I've found. Sadly it's still too slow. In fact I had
>never backed-up anything from the ports, because those ports were
>*safe*. As long as you don't play around with SysRPL or ASM! I had my
>Sys/ASM programming projects in port1 (uses less energy for storing
>continually) but the other day, a major crash during programming
>erased half of port1 (the first bank), so I lost about 80Kb. I don't
>remember everything I may have lost, but I'm sure I lost two almost
>finished projects :(. Then I backed-up all my data, even the stuff in
>port2.
>
====
Have you got the ROM upgraded yet ?
What about other communications between the calculator and PC... can you 
upload
and download data ?
What's the state of your calculator now ?
WE WANT TO KNOW... we want to help
just trying to figure out if you have a software problem or a hardware 
problem
:)
====
I need to get a new HP. My current HP48GX started to fail (I get a reset
almost every day, sometimes loose memory). Is there anything I can try to
repair this calculator? Can the firmware be upgraded/reloaded ?
If I can do nothing about it, is it possible to use it to learn its
architecture? I work with microcontrollers and DSPs but never had the 
chance
to 'play' with the HP architechture. It would be great if someone can share
experience in the subject. I'm a newbie in this.
Mariano
====
I get a reset
>almost every day, sometimes loose memory). Is there anything I can try to
>repair this calculator?
First of all have you dowloaded programs into it.... there has been some 
talk
about malicious code (hp48 virus ? ) that causes similar symptoms.
If you are sure it's a hardware problem... you could open it up and have a
detailed inspection... looking for any signs of corrosion or damage.... did 

you
ever drop it ? or have a leaky battery ????
If there are no signs of physical causes... the next step would be a 
schematic
and some electrical tests.... generally a signature analyser is used to
troubleshoot microprocessor based systems... but to a large extent the
usefulness of the measurements depends on knowing what the correct 
signatures
are supposed to be..
so you would need this information..or else a good unit to compare it 

to.
You could check out www.hpcalc.org.... but I don't know if they have logic
diagrams or signatures
 Can the firmware be upgraded/reloaded ?
It's in ROM... so the chip would have to be replaced... you might have to 

get
another second hand or defective unit to use for parts... since availability 

of
replacement items could be an issue
>
>If I can do nothing about it, is it possible to use it to learn its
>architecture? I work with microcontrollers and DSPs but never had the 
chance
>to 'play' with the HP architechture.
There is lots of information available for programming the processor in
assembly language... so you could certainly learn about it's 
architecture....
but before you could enjoy that you would still need to get  any physical
problems ironed out of the system.
I have a little experience at reverse engineering digital systems.... but I
have never had the time or need to do it on my wonderful hp
hopefully somebody else has.. and can teach us both... or point us in the 

right
direction
just my $0.02 worth
====
>I need to get a new HP. My current HP48GX started to fail (I get a reset
>almost every day, sometimes loose memory). Is there anything I can try to
>repair this calculator? Can the firmware be upgraded/reloaded ?
>If I can do nothing about it, is it possible to use it to learn its
>architecture? I work with microcontrollers and DSPs but never had the 
chance
>to 'play' with the HP architechture. It would be great if someone can 
share
>experience in the subject. I'm a newbie in this.
a used 48gx can be had for less than a hundred dollars.  If you time is 
worth
even ten bucks an hour, this is a much cheaper alternative to repairing 
your
one one.
====
It has been a long while (years) since I do not download programs into my
HP. I don't think I have a virus. I really cannot imagine how a virus can
harm a ROMed HP. In flash, a virus may damage firmware, and it can even be
protected, but in ROM, if you disconnect the battery for a long period of
time, the HP should come back to its original state.
now trace some points and test some stuff. Mainly to learn from it.
I cannot test much of it from electrical point of view. The problem seems 

to
be a software problem. It always happens when I am pressing a key or
performing an operation. Do you think this can be tested electrically? I 
can
trace addresses, data, check for activity, maybe get a reset output from 
the
microprocessor. However, I am thinking of this: the calculator is RAM 
based,
therefore all read/write information is stored in the memory. The OS must
have a table with address pointers to variables, programs, folders,
whatever. A hardware reset will reset the micro and will not alter RAM
contents. If the micro/OS is capable to recover from a reset and yet 
recover
the memory (Do you want to recover memory? YES / NO), then it should be 
able
to locate tables, pointers and variables in RAM.
I guess that, somehow, RAM contents are altered/corrupted. Can be due to:
1) its age (electrical components have a Mean Time Between Failure MTBF and
will fail) or
2) a problem with firmware, and hence a problem with ROM contents, 
therefore
ROM failure
3) a problem with the micro itself
Now, since the micro has a reduced set of instructions, and use most of 
them
during operation, I believe that if the failure is in the micro, it should
be more often and specific. I bet the problem is in RAM/ROM. By the way, 
the
self test performs OK.
Other than that, my calc has been not been dropped, the batteries are fine,
exposed to hot temperature in my bag, cold Michigan temperature in winter,
lots of miles traveled, vibration, but nothing unusual.
Does anybody have experience in opening an HP and testing this board? I can
think of many do's but I would really appreaciate the don't's :-) Correct
anything I have said if you think I'm wrong.
Mariano
====
I was trying a few symbolic integration with my HP49G
and this one didn't work
sin(ln(x))
the answer should be 1/2 *x (sin(ln(x))-cos(ln(x)))
(The IT89 was doing it easily!)
====
>I was trying a few symbolic integration with my HP49G
>and this one didn't work
>
>sin(ln(x))
>
>the answer should be 1/2 *x (sin(ln(x))-cos(ln(x)))
>
>
>(The TI89 was doing it easily!)
Yes, it can.  It is done by IBP twice with the auxiliary function
being simply X
'SIN(LN(X))'
'X'
IBP yields
'X*SIN(LN(X))'
'-COS(LN(X))'
append another 'X and do another IBP which yields:
'X*SIN(LN(X))'
'-X*COS(LN(X))'
'-SIN(LN(X))'
which means:
'SIN(LN(X))' = 'X*SIN(LN(X))' + '-X*COS(LN(X))' + '-SIN(LN(X))'
Or, the solution is '(X*SIN(LN(X))-X*COS(LN(X)))/2' which
simplifies to the answer you gave.
``Put on your thinking cap.''
Randolph J. Herber, herber@dcdrjh.fnal.gov, +1 630 840 2966, CD/CDFTF 
PK-149F,
Mail Stop 318, Fermilab, Kirk & Pine Rds., PO Box 500, Batavia, IL 
60510-0500,
USA.  (Speaking for myself and not for US, US DOE, FNAL nor URA.)  
(Product,
trade, or service marks herein belong to their respective owners.)
====
>I was trying a few symbolic integration with my HP49G
>and this one didn't work
>
>sin(ln(x))
>
>the answer should be 1/2 *x (sin(ln(x))-cos(ln(x)))
With a little calculus knowledge, the 49G can do it.
Put this on the stack
 
 / X
 |
 |   SIN(LN(X)) dX
 | 
/  0
Then do:
 LN(X)=U   SUBST   EVAL
Then:
 U=LN(X)   SUBST   EVAL  FACTOR
And there you have it.
--
Beto
====
I was trying a few symbolic integration with my HP49G
and this one didn't work
integrate (X/(1-X^4)^(1/2))dX   .
the answer is  1/2*sin^-1(X^2)   .
====
>I was trying a few symbolic integration with my HP49G
>and this one didn't work
>
>integrate (X/(1-X^4)^(1/2))dX   .
>
>the answer is  1/2*sin^-1(X^2)   .
Yes it can... just do it as you'd do it on paper.
Put this on the stack:
 / X
 |        X
 |   ------------- dX
 |   (1-X^4)^(1/2)
/  0
Then
 X^2=SIN(U)  SUBST EVAL
Then
 SIN(U)=X^2  SUBST
And that's it.
--
Beto
====
You kindly replied to this :
>I was trying a few symbolic integration with my HP49G
>and this one didn't work
saying this :
 
> Yes it can... just do it as you'd do it on paper.
 
but I'm afraid that following your argument, the mentionned piece of paper
can also integrate whatever you write on it...
(slight exageration on my part, yes)
The idea would be to have the answer out of the box, no ?
As in single final answwer to a single request...
Gerard
====
> [If this has been discussed here before, please point me to it.  Thanx.]
>
> The HP49G sometimes gives incorrect answers when ->NUM performed on 
ratios
of
> large integers.  In the following examples, exact mode is assumed.
It seems that the HP49G has only 12 digit internal accuracy because when
inputting such large integers, it rounds the input to 12 significant 
digits.
> ========== Example #1 ==========
>
> 1000000000001/1000000000002  (eleven zeros in each)
>
> ->NUM yields 1.
>
> But the correct answer (rounded to 12 decimal places) is 0.999999999999
>
> Admittedly, that's only off by 1 in the last place, but I thought the
HP49G
> had the ability to always get simple divisions correct to the last digit.
It appears that HP it reads the division as 1000000000000/1000000000000
instead of 1000000000001/1000000000002 because any numbers after 12 digits
are considered to be zero.  With a Ti89, it gets 0.999999999999 because it
uses internal 14 digits precision; this eliminates rounding errors in
numerics.
Sometimes I see that my results are a little off in the last decimal place
when checking my work compared to my original answer.  So use the last 
digit
with care, a guide to what the value actually might be.
> ========== Example #2 ==========
>
> 199999999999499/199999999999500  (eleven 9's in each)
>
> ->NUM yields .999999999995
>
> But the correct answer (rounded to 12 decimal places) is 1.
>
> That's *five* off in the last place.  Not good.
In this case the HP reads it as 199999999999000/200000000000000.
That's why it is good not to round with significant digit calculations 
until
the very end (when doing by hand) because errors like these might arise.
The HP calculator, however, can only do twelve digit calculations
internally, so it has to read all input with only the first 12 digits, 
after
that it's zero.
It would be good if HP added an extra internal digit or two in 
calculations,
it would make the last decimal place reliable.  I am unsure what the
limitation was that this could not be done, but it's ok.  You can always 
get
the longfloat library at hpcalc.
Albert
====
Somewhere I read a method of pausing what one was doing and then
opening a new session
For example, working on some program development, and want to go to
some simple calculations. You can pause this part and move off do your
calculationbs and then come back.
Aubrey.
====
1) HALT
1B) *not really needed* CLEAR
2) do you calculations
2B) *if needed* store the answer(s) into a variable(s)
3) CONT (or press shift-ON for CONT)
4) *if you did CLEAR * UNDO
Note: While I just tested the above sequence,
you can do a lot of variations of it.
Every new HALT opens up a new environment stacked.
So, if your little sister comes in
(without knocking on the door)
and has a simple school math problem,
you may start a new environment
AND if you friend phones you
while you are at point 2) with your baby sister
and asks you to solve some problem,
you may start yet another environment
> Somewhere I read a method of pausing what one was doing and then
> opening a new session
> For example, working on some program development, and want to go to
> some simple calculations. You can pause this part and move off do your
> calculationbs and then come back.
>
> Aubrey.
====
Get a 48GX while you still can.
>
> In ten years of extensive use, my HP48GX is starting to fail. I get a
reset
> almost every day, and the memory is lost. It is not the battery and I'm
not
> using any card, sometimes it just hungs up and performs a 'soft reset' as
> pressing ON-C, but sometimes I get the annoying hard reset, and I loose
all
> memory.
>
> I guess it is time to upgrade to a new HP49, but you know that the future
of
> HP calculator is uncertain. I am considering maybe going for a TI, but
have
> no experience with such calculators. Can anyone with experience in both 

HP
> and TI tell me what are the advantages and drawbacks of each? I want to 

go
> for an HP, but I guess the future of TI is better. Can anyone give me a
good
> reason why I should not go for a TI?
>
> Mariano
>
>
====
X
> on 89: solve(3x+2y=2z,x)
> on 49: 3x * 2y * + 2z * = x SOLVE
>   it is more keystrokes becouse it interpretes 2x as 2 SPC x instead
> of 2(x)
>   I wish that it would interpret it as 2(x) and then it would be
> quicker.
Have you tried it in the EQW Environment?
The multiplications are filled in automatically
although I have to press [ALPHA] before Y and Z
====
I thought that TI has gone further with its latest TI-89, but seems that 
the
capabilities are still the same as the HP. I work often with MATLAB and was
expecting to get a new calculator with some more power, closer to MATLAB.
Since both calculators seem not to have major breakthroughs, I guess I'll
get another HP.
I'll remain with the HP48GX. I don't like the idea of unreliable keys (my 

HP
is ten years old and the keys are in excellent shape). I guess the HP49G 
has
a renewed GUI, more memory and some more stuff. But I am looking for more
than just a nice GUI: more power and speed. And I see that it hasn't 
changed
much from HP48 to HP49, I'll try to get a new HP48GX.
Mariano
>
> In ten years of extensive use, my HP48GX is starting to fail. I get a
reset
> almost every day, and the memory is lost. It is not the battery and I'm
not
> using any card, sometimes it just hungs up and performs a 'soft reset' as
> pressing ON-C, but sometimes I get the annoying hard reset, and I loose
all
> memory.
>
> I guess it is time to upgrade to a new HP49, but you know that the future
of
> HP calculator is uncertain. I am considering maybe going for a TI, but
have
> no experience with such calculators. Can anyone with experience in both 

HP
> and TI tell me what are the advantages and drawbacks of each? I want to 

go
> for an HP, but I guess the future of TI is better. Can anyone give me a
good
> reason why I should not go for a TI?
>
> Mariano
>
>
====
> I also browsed through their programs, not much besides games.  I found a
> place with downloadable applications on the official TI website, but the 

only
> useful ones weren't free.
I assume you know about these sites for the TI's?
http://www.angelfire.com/realm/ti_tiplist/
http://tiger.towson.edu/~bbhatt1/ti/beta/MPL.htm
http://triton.towson.edu/users/bbhatt1/ti/MathTools.htm
--
Bhuvanesh
====
>The Ti-89 is TI's latest (actually the V-200 is, but both are about equal). 

 
but one should not forget, that the V-200 is nothing other, than an
TI-92 plus with a new design, some new keys, an a new user-interface.
Volker
====
I have tried EQW but I dont like it.  And EQW is not rpn.  Besides,
the 89 has an EQW too so it is not a factor.  I did not complain about
the ALPHA becouse the keys can be set to whatever is wanted.
Now that I think about it, I like the menues of both calculators.  The
89 has sort of a combination of soft menues and drop downs.  f1-f6
select the menue and then have a drop down.  This is faster when
alternating between several menues.  This works similar to the way
windows programs work (File Edit View etc.).
I still recommend the 89 over the 49 for symbolics.  And for numerics
I recommend both the 89 and hp48 over the 49 becouse of the bad keys. 
This is why I just bought myself a hp48.  I will use the 48 for
numeric calculations and when CAS's are banned and the 89 for the CAS.
 I suspect that I might retire my hp49.
> X
> on 89: solve(3x+2y=2z,x)
> on 49: 3x * 2y * + 2z * = x SOLVE
>   it is more keystrokes becouse it interpretes 2x as 2 SPC x instead
> of 2(x)
>   I wish that it would interpret it as 2(x) and then it would be
> quicker.
> Have you tried it in the EQW Environment?
> The multiplications are filled in automatically
> although I have to press [ALPHA] before Y and Z
====
>I assume you know about these sites for the TI's?
>
>http://www.angelfire.com/realm/ti_tiplist/
>http://tiger.towson.edu/~bbhatt1/ti/beta/MPL.htm
>http://triton.towson.edu/users/bbhatt1/ti/MathTools.htm
No!  They even have a program for RPN that doesn't appear to be in French. 
I'll starting telling TI users about this site after Spring Break.  A lot 

of
them wil be happy to have good sources for TI programs.
--CS
====
>The only complaint that I haven't found a way around is the whole graphing
>issue.
>My HP definitely takes a LONG time to graph.
Have you tried lowering the resolution using the RES command?
--
Beto
====
>The poor 48 series can not run a programmable alarm as a subprogram
>So if I'm currently using the 48GX for number-crunching the prgram just
>passesby as a label instead of executing the program: there is no
>[up-arrow][up-arrow]label operation possibility in alarm system.
Ahh.
Sorry, but i don't use my HP 48 as an alarm clock very often. So i
didn't know about this fact.
Volker
====
> I owned a '41 from when they first came out - they really were waaaay 
ahead
> of their time.
> 
> straight-forward/no nonesence - In comparison I've struggled badly 
with
> the HP49g - too darned complicated.
> 
> If anyone from HP is reading this, what I'd love to see is a HP41 
'Millenium
> Edition' ...
> 
> ... something with the power & simplicity of the 41 - but with the speed 

and
> additional memory of modern technology - and REAL KEYS!
> 
> I'd buy one in a moment - no matter what the cost!
> 
> 
Mmmmm... An HP41 with >1Mb RAM... a display that shows the complete 
stack, plus some registers... USB instead  of HPIL, but with a line of 
accessories to go with it such as barcode scanners, data collection gear 
etc ... the same simple HP41 language, but with every extension module 
ever developed in ROM... maybe a few PDA-type applications -- diary, 
address book, text editor, to-do list... simple graphics display... an 
XScale CPU...
Yep. I'd love one. But it'll never happen. And truthfully, most of this 
stuff might be better done as software for a PDA.
I loved my HP41, and I'm pretty fond of my HP48s - but technology has 
marched on, alas.
-- 
Steve Ballantyne
(9907)
====
I wounder is there away work like in Excel on the HP 49G. First I enter a
series of numbers in the martixwriter, then how can I enter equation for a
hole colum? I tried Xcell48 but I could get a plot. How do I get a scatter
plot i Xcell48? Is it possible to export a file from Xcell48 an then open 

it
in the matrixwriter? How do I convert the textfile I get from Xcell48, so I
use it in the matrixwriter?
Joakim
====
Yo!
I donno, man.
I used to make a copy of the numeric matrix
and then use - was it MAP - to the copy.
Also using AXL and then DOSUBS or DOLIST
can simulate some sort of spreadsheet...
>
> I wounder is there away work like in Excel on the HP 49G. First I enter a
> series of numbers in the martixwriter, then how can I enter equation for 

a
> hole colum? I tried Xcell48 but I could get a plot. How do I get a 
scatter
> plot i Xcell48? Is it possible to export a file from Xcell48 an then open
it
> in the matrixwriter? How do I convert the textfile I get from Xcell48, so
I
> use it in the matrixwriter?
>
>
> Joakim
>
>
====
I have bought two Klotz's memory cards (128kb and 1Mb) last summer, they
works fine for several months, but the 128 kb has failed. I don't know what
is happening. First it causes a Invalid card data error, It's an usually
weeks I haven't installed new libraries, so it don't seems to be a problem
of corrupted libraries.
I proved it in other empty memory hp48, slot 1, and the invalid card data
continues, PINIT don't solve the problem. But if I store a library in port
1, it works, but always I switch on the calculator, all libraries are
initialized. I removed the batterie from the card for a week, and when I 
use
it again the problem is exactly the same.
Really I don't understand what is happening and I'm not sure it's a 
hardware
====
> I have bought two Klotz's memory cards (128kb and 1Mb) last summer, they
> works fine for several months, but the 128 kb has failed. I don't know 
what
> is happening. First it causes a Invalid card data error, It's an usually
> weeks I haven't installed new libraries, so it don't seems to be a 
problem
> of corrupted libraries.
> I proved it in other empty memory hp48, slot 1, and the invalid card data
> continues, PINIT don't solve the problem. But if I store a library in 
port
> 1, it works, but always I switch on the calculator, all libraries are
> initialized. I removed the batterie from the card for a week, and when I 

use
> it again the problem is exactly the same.
> Really I don't understand what is happening and I'm not sure it's a 
hardware
I'm sure he'll help you determine where the problem lies and replace
the card if it's defective.
-- 
Wayne Brown                | When your tail's in a crack, you improvise
fwbrown@bellsouth.net      |  if you're good enough.  Otherwise you give
                           |  your pelt to the trapper.
e^(i*pi) = -1  -- Euler  |           -- John Myers Myers, 
Silverlock
====
Every time that a card gives me spurious Invalid Card Data errors, it 

gets
solved by cleaning the card's contacts AND the port's contacts.  The latter
can be done by doing the former, then inserting and removing the card a 
bunch
of times, and repeating until no more gunk shows up when cleaning the 
card's
contacts.
I even have a few cards that only work when FIRMLY seated.  Just plugging 

'em
in isn't enough; I have to WIGGLE 'em in place and then push hard on both 

of
well... until I drop the calculator and the card moves slightly.  )-:
Hey, anybody know a better way to clean the port contacts?  My way seems 
like
brushing one's teeth with a TOOTSIE ROLL.  (Would that lead to TOOTH ROT?  

Do
dentists perform TOOTH UNROT?  Should I use a TOOTH PICK or a TOOTH 
UNPICK?)
-jkh-
====
>>
>> Usually the numeric solver in HP49 (the solve lin sys in this
>> case) seems to work ok, but today it gave me really strange
>> results. Either this is a bug or (more likely) I've managed to set
>> some very esoteric flag. But I can't find what is wrong and a on+F3
>> doesn't helt. ROM version is 1.19-6
[...]
> You should report this on the bug list as a SERIOUS bug.
> 
> There is something strange going on here.
If it hasn't been reported already could any of you guys do it - you seem 
to have a much deeper understanding of the details of the problem than I do 

(and I don't have a Bugzilla account)?
====
> or MathTools (download link at the top):
> 
> http://triton.towson.edu/users/bbhatt1/ti/MathTools.htm
That looks quite interesting, but the download link gives a page
unavailable error. Also, by when do you plan to fix the serious bugs
(Priority 1 and 2, I guess)?
-- Helen.
====
> or MathTools (download link at the top):
> 
> http://triton.towson.edu/users/bbhatt1/ti/MathTools.htm
> 
> That looks quite interesting, but the download link gives a page
> unavailable error.
Oops, sorry, thanks for catching that. The link should be:
http://triton.towson.edu/users/bbhatt1/ti/mathtools.zip
> Also, by when do you plan to fix the serious bugs
> (Priority 1 and 2, I guess)?
All three priority 1 bugs should be fixed by the next release, if all
goes well. I also plan to update GMP and fix the CoefList bug soon.
I'm not sure about the others, since I'm short on time at the moment.
Bhuvanesh.
====
Greetings from Austria
I am sorry to post in this newsgroup. But I have to sell my TI 200 out 
of financial reasons and want to get sure that someone buys it :)
(Ebay seems not to be the place where a lot of people sell calculators)
so here it is:
http://cgi.ebay.at/ws/eBayISAPI.dll?ViewItem&item=3406689569
-- 
====
> Greetings from Austria
> I am sorry to post in this newsgroup. But I have to sell my TI 200 out 
> of financial reasons and want to get sure that someone buys it :)
> (Ebay seems not to be the place where a lot of people sell calculators)
This is like trying to sell bibles to atheists.
====
you don't have  to use the matrix writer to enter a marix because you can 

key
it in directly if you wish
But there is no faster method  than the matrix method...just think 
about
it... you are keying in the BARE MINMUM of information.... i.e. the
coefficients and constants
====
I was hoping to use the flag 1-5 annunciators on the display as an animated
progress indicator.  Each time a solution was found by the program, the
current flag would be turned off and the next one turned on, with 
wraparound
from 5 to 1.
Well, the program does the right things with the flags but nothing is
displayed while the program runs.  When the program ends, one of the
annunciators does come on, as expected, but a little too late to be useful.
Am I doing something wrong here?  Is this possible?  If not, is there some
other simple way to show that the program is making progress?  (I did also
something that does not stop the program and thus require me to start it up
again.)
- Michael
--
Remove No Spam Please from return address.
====
>I was hoping to use the flag 1-5 annunciators on the display as an 
animated
>progress indicator.  Each time a solution was found by the program, 
the
>current flag would be turned off and the next one turned on, with 
wraparound
>from 5 to 1.
>
>Well, the program does the right things with the flags but nothing is
>displayed while the program runs.  When the program ends, one of the
>annunciators does come on, as expected, but a little too late to be 
useful.
The stack display is only updated when your program ends and control
returns to the System Outer Loop (SOL). When the SOL regains control,
it calls SysDisplay which in turn calls DispStatus. DispStatus takes
the current system state into account and updates the status line
accordingly. So, in order for the flag annunciators to be
displayed/updated, you would need to call DispStatus every time you
change the state of the flags. This can be accomplished by a 
#395BA SYSEVAL for the 48 or a #2C305 SYSEVAL for the 49.
----------------------------------------------------------------------------

---
Jonathan Busby - <jdb@SNMAPOhouston.rr.com>
before replying.
 
====
Welll I am glad they are still in business
I bought a cable from them in 2001 and had no trouble then
====
I purchased a hp48gx to add to my collection.  Now I have a ti-89,
hp49, and hp48gx.
I need erable and algebra48.  What other programs do I want?  I am not
sure what metakernal does but it appears to be a big and popular
progam.  I would rather buy the 128kb if that is all the memory that I
will need.
====
If you want much of the functionality of the
HP49 in your HP48 then buy a 128KB RAM card, 
plug it in the first slot and install the MK.
That would upgrade your OS to something decent
and faster. Then buy a 1MB RAM card plug it in 
the second slot and install Alg48 & Erable. That
would add a CAS that would be comparable in some
aspects to that of the the HP49 with quite a few 
exceptions. You know what your needs are, so act
accordingly.
!Demeter!
====
Check out the Klotz RAM cards at
http://www.uuhome.de/oklotz/index_e.html
I just bought 2 from him today... so I havent received them as yet... but 

many
folks in here use them and they are a good price
====
Could I fit all of that on 2 128kb cards? That would be 384kb.  I dont
think that I would ever uses up 1mb+128kb+128kb so I would feel
wastefull.
====
chris heaton meinte 
>Could I fit all of that on 2 128kb cards? That would be 384kb.  I dont
>think that I would ever uses up 1mb+128kb+128kb so I would feel
>wastefull.
You should not think that limited. 128KB for slot 1 is a technical
restriction you can't avoid. For the second slot the decision should
be based on cost effectiveness. If you accept the proposal to buy at
Klotz, an alternative could be CYNOX, you'll find out that a 2MB
card is comparable _much_ cheaper than a 128KB card. That is about 40$
versus 110$ for 16 times storage capability. 
or two MB in slot 2 give you the flexibilty for intelligible backup
strategies, lots of libraries you currently even dont think of, etc...
Summary: buy one 128KB card. If you buy a second card don't waste your
money with another 128KB card, go at least for a 1 MB card, perhaps
even better a 2 MB card.
Gru� G.9fnter Schink, Slot 1 128 filled with MK, Slot 2 
populated 
:-)
with Organizer, Scribe, ALG48, Sokoban, Tetris, Pac Man, plotting
programs etc....
====
I've got a pretty esoteric question: why does HP-16C index register have
68 bits when all normal registers can be at most 64 bit long? What those
4 extra bits could be used for, bar writing (nearly) endless ISZ loops,
I mean.
Alexander 
-- 
Dr Alexander Supalov
Senior Software Engineer
--------------------------------------------------------------------
//// pallas / A Member of the ExperTeam Group
Pallas GmbH / Hermuelheimer Str. 10 / 50321 Bruehl / Germany
Alexander.Supalov@pallas.com / www.pallas.com
--------------------------------------------------------------------
====
Samson Cables... just what I was looking for !
They may be a little more expensive there... but they ship international 
with
2-day Priority UPS which is what I wanted... because I am now living in
Barbados and my credit card statement address does not match my shipping
address which LIMITS my options online
I used to buy stuff for my 48SX from calcpro.com... but something gone 
wrong
whatsoever.
====
>
> TomCee
Or set flag -60 and press alpha once to lock, again to unlock.
> Please remind me--what input methods allows me to temporarily set
> alpha mode for data entry?
>
--
James
====
>Use an array of reals instead.
>Then you can be sure to always have the data part
>inside your your structure, instead of pointers.
>Apart from that, an array saves ome memory
>because the prologue is stored only once.
I'll check that and see how better is it. Right now I solved the
*problem* by checking every prologue inside the list and processing
the object accordingly.
--
Beto
====
>
>I have a list of reals and I want to work with them.
>The problem is this:
>For example, 5. in the stack is 33920 0000 0000 0000 0050
>but inside a list is 0A9F2.
>
>Why is that?
>
>How can I recognize when it is encoded as a five nibble structure (I
>guess it's an address) or the usual 21 nibble structure of a real?
>
>I need to know this in order to handle the list of reals in a proper
>way.
>
>Any hints?
>
First, read up on the internals of objects and how direct and indirect
execution and the RPL inner loop work. Some sources were pointed out
here :
http://groups.google.com/groups?selm=riigqu4h17698m2i8122oqkeuhqh8viepp%404a

x.com
When you've done that, you can understand how the following code
fragment works :
        C=DAT0  A
        CD0EX
        RSTK=C 
        A=DAT0  A 
        LC(5)   =PRLG
        A=A-C   A 
        C=RSTK
        ?A#0    A
        GOYES   +
        D0=C
+       D0=D0+  5
        A=DAT0  W
        D0=C             
Assuming the address of the real number object or object pointer is
contained in D0, the above fragment returns the real number body in
A.W . The only registers used are A.W, C.A and one RSTK level. All
others remain unchanged.
----------------------------------------------------------------------------

---
Jonathan Busby - <jdb@SNMAPOhouston.rr.com>
before replying.
====
>First, read up on the internals of objects and how direct and indirect
>execution and the RPL inner loop work. Some sources were pointed out
>here :
>http://groups.google.com/groups?selm=riigqu4h17698m2i8122oqkeuhqh8viepp%404

ax.com
Done, hard to digest for an ML beginner like me.
>When you've done that, you can understand how the following code
>fragment works :
>
>
>       C=DAT0  A
>       CD0EX
>       RSTK=C 
>       A=DAT0  A 
>       LC(5)   =PRLG
>       A=A-C   A 
>       C=RSTK
>       ?A#0    A
>       GOYES   +
>        D0=C
>+      D0=D0+  5
>       A=DAT0  W
>       D0=C             
>
>Assuming the address of the real number object or object pointer is
>contained in D0, the above fragment returns the real number body in
>A.W . The only registers used are A.W, C.A and one RSTK level. All
>others remain unchanged.
I've already done something similar, reading the prologue and process
accordingly.
--
Beto
====
I went to small business link and they are one of those that have to match 

up
stament address to the credit card + they dont ship outside USA
I am now living in BARBADOS and enjoying island life... so I bought it from
Samson Cables who ship international 2-day delivery... so I payed the piper 

and
called the tune
After I get it... I may be able to answer your other question... who knows 

:)
Have a great day
have a great day !
====
> Sorry.... made a typo in my first reply
Ok, you got me there :-)
> The Parenthesis has to be around the entire Exponent
Too late. Just want to ask a related problem, that always irritates me
whenever this problem occurs, using EQW.
Now Iわe entered: 'r*e^(pi/2)*i' on stack level 1, as you 

suggested
originally.
Iわe found that that rshift+EVAL does nothing, because of 
the 
missing
parenthesis.
So I press [down-arrow] and EQW-windows opens: I want to highlight
i*e^(pi/2) but instead I get highlighted either:
1) 5
2) i
3) e^(pi/2)
So then I press [F2/cursor] and get either:
1) 5
2) 5*i*e^(pi/2)
3) or any of the previous 1), 2), 3)....ARGH! :-)
I want to use [cut] + [LS] + [()/-] and [paste], if not anyone else has a
better suggestion...
I donろ know if Iわe seen the answer 
before, 
but it irritates me a lot,
because I think it shouldnろ be necessary to type in the 

whole thing from
the beginning. Now this is a relative simple expression, but 
Iわe tried to
manipulate much longer expressions, say i.e. I need an extra parenthesis
somewhere and I found out too late...
Any help on that?
> 25*e^(pi/2*i)
>
> which would give (25 <90) with calculator in degree mode if you did
rshift+EVAL
Mine doesnろ give that in degree mode. 
Doesnろ 
help to switch from
rectangular to polar mode. The closest thing mine comes to your result is 

in
radian mode, where it gives me '25*i' - I guess that was not what you meant
mode if you did rshift+EVAL.
Mine rshift + EVAL does not change the expression - any comments on that?
Martin J.
====
>
>Now Iわe entered: 'r*e^(pi/2)*i' on stack level 1, as you 

suggested
>originally.
>Iわe found that that rshift+EVAL does nothing, because of 

the missing
>parenthesis.
that's NOT what I get.... I simply get a WRONG answer
>Mine rshift + EVAL does not change the expression - any comments on that?
The default flags should allow evaluation to a NUMBER.
Have you changed the flags ?
I am using an HP48SX with ROM version E
what are you using ?
====
yeoldcoffeeshop.com   and olde spellings  yeoldecoffeeshoppe.com
URL:  http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=3405639845
Open a cafe, put in some computers, and make the
biggest frachise in history!!
--
  _____                        ___
 / ___/ /   __    __  __  /__  /
/ /__/ _  / -_)(_-  (_-  _/_  /
_ _/_//_/__/ /__)/__)/___/
        www.chess3.com
====
I get the picture
I ordered a 49G
just got to decide if to cancel the 48GX or let both come
I am a bit of a calculator freak... and I would suppose you might have both 

of
them as well ??
====
>
>I get the picture
>
>I ordered a 49G
>
>just got to decide if to cancel the 48GX or let both come
>
>I am a bit of a calculator freak... and I would suppose you might have both 

of
>them as well ??
Both are great calculators, If I had the money I'd buy a 48GX myself
to use it specially for number crunching, because it's keys are far
more better. In the meantime, I'm happy with my 49G, even though the
ENTER, ON and Right-Shift are totally erased.
--
Beto
====
>
> I get the picture
>
> I ordered a 49G
>
> just got to decide if to cancel the 48GX or let both come
>
> I am a bit of a calculator freak... and I would suppose you might have
both of
> them as well ??
Try to buy them both used to save your money.
====
X
> Both are great calculators, If I had the money I'd buy a 48GX myself
I have them both, but use the 48GX seldom now.
ONLY when I need to use units & EQW
> to use it specially for number crunching, because it's keys are far
> more better. In the meantime, I'm happy with my 49G, even though the
> ENTER, ON and Right-Shift are totally erased.
Naturally this means the key labels, which in my calculator are still 
intact
after more than three years of (ab)use
helping HP 49G users by the phone in Finland.
>
> --
> Beto
Veli-Pekka Nousiainen
====
>X
>> to use it specially for number crunching, because it's keys are far
>> more better. In the meantime, I'm happy with my 49G, even though the
>> ENTER, ON and Right-Shift are totally erased.
>Naturally this means the key labels, which in my calculator are still 
intact
>after more than three years of (ab)use helping HP 49G users by the phone in 

Finland.
Three years and intact key labels? I thought yours should be more
*erased* than mine... Do you really use it? :)
--
Beto
====
====
X
>> ENTER, ON and Right-Shift are totally erased.
>Naturally this means the key labels, which in my calculator are still
intact
>after more than three years of (ab)use helping HP 49G users by the phone
in Finland.
>
> Three years and intact key labels? I thought yours should be more
> *erased* than mine... Do you really use it? :)
Not much on weekends, but you probably
A) have a calculator from a different batch and
B) have used the translucent slide-in cover
C) have fingernails (: I bite mine)
====
> I bought a Dell laptop which  has only USB ports and also a Targus port
> replicator.  Unfortunately I could not establish connection to the hp49 

or
> the 48GX. using the standard hp connectivity kit software and cable.
>
> After reading some the contributions to this group dealing with USB - 
Serial
> conversion I wonder why the Targus failed.
> Two years ago James Prange said a USB Serial Converter-UC 310 worked well
> for him. Somebody else suggested the Belkin USB Serial Adapter for $74 
and
> others recommended the Keyspan high speed USB Serial Adapter.
>
> Are there any new insights into this?  Has anybody had good or bad
> experiences with USB-Serial adapters?  Does the connectivity kit work 
with
> these devices or does one go back to a (cumbersome) kermit protocoll?
It seems that I owe you an apology; my converter doesn't seem to work
quite as transparently as I had thought at that time.
Using HPComm v3.0r4, ASCII and binary file transfers, Backup..., and
Restore (all using the Kermit protocol) work fine, but Capture
Image... doesn't work with the converter.
If I use the built-in serial port instead of the converter, then
Capture Image... does work.
The HP Connectivity Kit XModem kit version 1.0.9 can't find the COM port
when I use my converter.
If I use the built-in serial port instead of the converter, then the
XModem kit does work.
http://www.hilgraeve.com/htpe/index.html) works with either the
converter or the built-in serial port. I guess that the HyperTerminal
that comes with MS Windows would also work, but I don't know that for
certain. This works as a terminal emulator, allows you to Capture
Text... (from XMIT or the various print commands), Send Text File...
(using SRECV on the calculator), transfer using the Kermit protocol, and
transfer using the XModem protocol. But note that it doesn't recognize
the 49G's XModem Server mode, so you have to use XSEND and XRECV on the
calculator and always provide a name on the receiving device. Also, for
XModem, it initially expects CRC error checking, and it takes a
considerable time to fall back to checksum error checking.
All of this is using MS Window 98SE. With the various possible operating
systems and software and hardware configurations, Your Mileage May
Vary.
> My Targus cost $86 and I am shipping it back.
I'm not familiar with the Targus port replicator, but if it's just a USB
to RS-232 serial converter, $86 seems expensive.
But it seems that if you want to connect your calculator to the laptop,
then you're going to need some sort of serial port.
Before you send it back, try using HyperTerminal with it. Also make sure
that you have everything set up for the right COM port, speed, and
parity.
--
James
====
> Is there any way to change the tone and duration for the key click
> option in the Calculator Modes form?
>
> What is the use of the Print form (to print an object)?  The only port
> setting is Wire.
I think that the port setting is a carry-over from the 48G series, which
gives you the choices of Infrared or Wire. Even though the only
choice on the 49G's input form is Wire, you can still choose to print
by infrared by clearing system flag -34. If you do -34 CF and then try
to print something (without using the PRINT input form), then the I/O
annunciator comes on for a while, but since the IR LED (and, I suppose,
supporting circuitry) is missing, the printer doesn't respond. Using the
PRINT input form forces flag -34 to set.
There's a similar situation with the TRANSFER input form. In this
case, you can choose to transfer by infrared by setting system flag
-33, with similar results.
<snip>
--
James
====
be very limiting. (your questions take a long time to be answered. 
And why answer a simple question?  It has probaly already been
answered (or not))
It would be nice if this group was abandoned and one of those good
ones was formed to replace it.  I dont know what they are called but I
Moderaters control and there are many nice features such as the
read through all of the threads and by the time you are done people
have replied to what you have written.
I am not sure what these are called, but I participate in several.  If
you want to see one look here http://www.bombermanboard.com It is for
bomberman which is one of my favorite games
====
I have been away from this forum for some time and was surprised to see the
news that HP has for all intents and purposes given up on the calculator
business. Does anyone know if this is due to the new managment and the
merger with Compaq, or  lack of interest by the public/HP management for 
the
HP calculators?  Also, are there any remnants of the US or Australian HP
calculator development teams left which will be allowed to develop new
products in the future?  On a more technical note I checked the HP site for
HP 49G support and nothing, what is the latest usable version of the HP 49G
continues.
====
I'm very tired of people not using Google Search on this newsgroup!
HP HAS NOT GIVEN UP ON THE CALCULATORS NOR RPN
period
Veli-Pekka Nousiainen
> I have been away from this forum for some time and was surprised to see
the
> news that HP has for all intents and purposes given up on the calculator
> business. Does anyone know if this is due to the new managment and the
> merger with Compaq, or  lack of interest by the public/HP management for
the
> HP calculators?  Also, are there any remnants of the US or Australian HP
> calculator development teams left which will be allowed to develop new
> products in the future?  On a more technical note I checked the HP site
for
> HP 49G support and nothing, what is the latest usable version of the HP
49G
> continues.
>
>
>
>
====
Anyway... you know your calculators good....  so don't let the postings
frustrate you
we all need you in here  :)
====
NO, but I voluntarely (as the current president of STak)
help the local distributor and the users in Finland and here
at comp.sys.hp48
> Anyway... you know your calculators good....  so don't let the postings
> frustrate you
Perhaps good, but not excellent - I have been often corrected by JYA
WR & others
> we all need you in here  :)
all?
(-;
====
HP may not have give up, but Staples, Wal-Mart, Office-Depot, and
Office-Max don't have any in various states where I've looked: NM, TX,
FL, CA, and NV.
====
> I'm very tired of people not using Google Search on this
newsgroup!
> HP HAS NOT GIVEN UP ON THE CALCULATORS NOR RPN
> period
I read this newsgroup nearly every day and all I've gotten from it
is the rumors of new calculators.
Barry
====
> HP may not have give up, but Staples, Wal-Mart, Office-Depot, and
> Office-Max don't have any in various states where I've looked: NM, TX,
> FL, CA, and NV.
Agreed. I think actions speak louder than words. ACO is terminated.
Kinpo calcs are being rebadged as HP, and no one sells HPs anymore.
But there is an HP marketing memo saying they are still in the
business. Let's see, which do I believe?
Steve
====
Me
> HP may not have give up, but Staples, Wal-Mart, Office-Depot, and
> Office-Max don't have any in various states where I've looked: NM, TX,
> FL, CA, and NV.
>
> Agreed. I think actions speak louder than words. ACO is terminated.
> Kinpo calcs are being rebadged as HP, and no one sells HPs anymore.
> But there is an HP marketing memo saying they are still in the
> business. Let's see, which do I believe?
>
> Steve
====
Exactly. Rumors that they are coming, rumors that they are not. I wish HP
clears the fog once and for all by announcing officially SOMETHING or 
states
that it's over.
--
Thierry Morissette
thm47@msn.com
> I'm very tired of people not using Google Search on this
> newsgroup!
> HP HAS NOT GIVEN UP ON THE CALCULATORS NOR RPN
> period
>
> I read this newsgroup nearly every day and all I've gotten from it
> is the rumors of new calculators.
>
> Barry
>
>
>
====
        ...
>> Agreed. I think actions speak louder than words. ACO is terminated.
>> Kinpo calcs are being rebadged as HP, and no one sells HPs anymore.
BTW, has anyone out there actually _seen_ a 9S or 9G in a store?
Craig
 <02ac30e9a098f22a308d27bd620a93ff@news.teranews.com>
 <898ba.818$mE2.56953@news20.bellglobal.com>
====
>Exactly. Rumors that they are coming, rumors that they are not. I wish 
>HP clears the fog once and for all by announcing officially SOMETHING 
>or states
>that it's over.
There is a press release announcing the 9s and 9g at:
The following quote comes from it:
The HP 9s and HP 9g are just the beginning of what we have in store for 
our customers throughout the coming year, said Fred Valdez, general 
manager, Calculator Division, HP Personal Systems Group. We've 
accelerated our product development plans and begun working with our new 
aggressive sales and marketing partners around the world.
-- 
Bruce Horrocks
Hampshire
England
bh@granby.demon.co.uk
====
Has anyone tried to make this interface?
http://home.nordnet.fr/~phpamart/pdf/fiche_cable_hard.pdf
And perhaps made a useful program on the pc/calculator?
I know that itれ possibly to use the connectivity kit also, 

but thought that
making your own program/interface perhaps could make more interesting
programs for the pc like data-loggers etc.
I saw a person had made a interface that could control win-amp... Sounds
like a fun project.... Any comments?
I think it could be interesting to make, but right now I 
donろ have time
enough.....
Just wanted to hear if anyone has any experience, doing so...
Martin Jorgensen.
begin 666 Martin Jorgensen.vcf
====
I've heard so much about the HP48GX but I didn't get a chance to see it
before they got obsoleted.
In my current life, I don't think I'll ever use the full power of a HP48GX
or a HP41CX.  The 200LX built in calculator and Lotus123 is more than 
enough
for I what I need.
However, I was wondering if a HP48GX is worth a HP41CX?
Thx
weemeng
====
They are NOT obsolete..... they are still selling brand new everyday... 

from
many stores all over the world.
HP48GX is a superior machine to the HP41CX....
but then I am scientist as well as a computer programmer....
and if you are not, then its value to you... 
may be negligible
====
wee-meng lee <leewm@DEL.sgp.hp.com> schrieb im Newsbeitrag
>
> I've heard so much about the HP48GX but I didn't get a chance to see it
> before they got obsoleted.
>
> In my current life, I don't think I'll ever use the full power of a 
HP48GX
> or a HP41CX.  The 200LX built in calculator and Lotus123 is more than
enough
> for I what I need.
>
> However, I was wondering if a HP48GX is worth a HP41CX?
>
As another poster said in other words,
the HP-48GX is much more powerful than the HP-41CX.
However, many people consider the HP-41CX
to be more practicable, and easier to use.
Nowadays a new 41CX costs much more than a brand new 48GX.
Raymond
====
X
> However, many people consider the HP-41CX
> to be more practicable, and easier to use.
> Nowadays a new 41CX costs much more than a brand new 48GX.
I consider the HP 42S being even better than the HP 41CV
====
>HP48GX is a superior machine to the HP41CX....
No. In my opinion the just are not compareable.
for instance the HP 41CX has a 4-Port Interface for locking Solid
State Software Modules, Printers an a megnetic card reader as a mass
stoage system, and, IIRC, they sold a digital cassette drive as a mass
storage for some time.
In addition to this, there was an interfacemodule for the HP 41 series
to the HP-IB and it's devices.
The HP 48 GX has none of the above features. But it has much more
memory, it has graphic capabilities (the HP 41 don't) and it can solve
task symbolically (the HP 41 can't).
The only thing i would wish for my HP 48 is a portable mass storage
system and something like the HP-IB for using the HP 48GX as a mobile
measuring computer.
Volker
====
>HP48GX is a superior machine to the HP41CX....
>
> No. In my opinion the just are not compareable.
X
> The HP 48 GX has none of the above features. But it has much more
> memory, it has graphic capabilities (the HP 41 don't) and it can solve
> task symbolically (the HP 41 can't).
So, basically:
1) The best number cruncher=HP 41 [42]
2) The best symbolic graphics calc= HP 48 [49]
?
PS: I use the 41CX as a clock to wake me up and remainder for TV-shows
====
I can't comment on the electronics of it but I can tell you that the 
overhead display unit is exceedingly annoying because if you plug the 
calculator into it while it is switched on then the LCD in the panel 
almost always displays 'rolled' by about half a screen and you have to 
repeatedly hit a button to roll it down the screen until it displays 
properly. On the other hand if you plug it in with the calculator 
switched off and then turn the calculator on then there is usually no 
problem. This is the case for the 38G and the 39/40G.
> Hallo !
> 
> I just analyzed the video signals on the 10 pin connector of the HP38G
> calculator. I think they are more or less identical to the HP48GX
> signals found on the internal connector.
> 
> But I found a problem with the vertical synchronization. This bit
> sometimes vanishes, for instance in the plot screen without any menue
> bar.
> 
> Does anybody have any further informations about the display video
> signals?
> There had been some overhad displays for the HP38G and HP48GX. How they
> done it ??
> 
>                               Greetings, Christian Daniel
====
> Frederic Durand <nicer@gmx.fr> schrieb im Newsbeitrag
> use this kind of calc, but the big prob is I dont know how to use
> that, so if you know where can i get a manual for this calc + card,ill
> be very happy.
>
> on www.hpcalc.org you will find a lot of usefull stuff. And there you 
find
> also a manual for the HP48G/GX (works for the HP48SX too) in pdf-format. 

But
> be warned, it's a huge file!
Well, except that some things (list processing, new commands, etc.) on
the 48G series aren't the same as on the 48S series.
At http://www.hpmuseum.org/cd/cddesc.htm you can purchase a CD-ROM set
or DVD-ROM that has scanned-in PDF copies of the 48SX Owner's Manual
Volumes 1 and 2 plus the 48SX Programmer's Reference manual. It doesn't
have the Quick Reference (pocket) Guide though. It also doesn't have the
82211A Owner's Manual, but since most of what was on the card is
built-in to the 48G series, I expect that the 48G Series Guide should be
helpful for it.
--
James
====
> 
> Usually the numeric solver in HP49 (the solve lin sys in this case) 
> seems to work ok, but today it gave me really strange results. Either 
> this is a bug or (more likely) I've managed to set some very esoteric 
> flag. But I can't find what is wrong and a on+F3 doesn't helt. ROM 
> version is 1.19-6
> 
> I have the following matrixes:
> 
> A = [[-0.120273333333 -1]
>      [0.64102 0]]
> 
> B = [[-0.64102]
>      [0.120273333333]]
> 
> 
> I enter num.solv with rshift 7 4. I choose (F2) the matrix A for A 

> and B for B, scroll to X and press solve.
> 
> Solution: [[-2.9095203426E-26]
>            [-6.4164881584E72]]
I got the same results. I tried a manual solve by dividing the
constants by the coefficients, and that worked fine.  Then I put the
two matrices on the stack, started the solver, and used CALC-OK to
insert them into the fields.  That worked fine too.
But if I open the solver and use the matrix writer to enter the
matrices, I get those strange values.
Can anyone shed any light on this?
Bill Maybe it Expects Mattresses Markwick
====
Is anyone familiar with this calculator?  It looks like they gave
the 92 more memory, and a slightly different interface (still menus,
no soft keys),and a better appearance.  It seems to have the same
(dis)abilities as the TI-89.
I've seen one TI-200 around campus, and I was wondering if anyone
had intimate knowledge of it.  Are the commands different?  Is it
any better than the TI-92?
I know that this is way off subject, but I also know that there are
a lot of calculator fanatics on this NG.  I'm a die hard HP user, but
I work as a college tutor in the US.  As far as I know, I'm the only
one at my school using the HP49.  There are three Engineering
professors that use the HP48.  Everyone else I've seen uses the TI's.
Someone came in the other day proudly displaying his TI Voyage 200
and asked me if I knew anything about it.  I played around with it but
couldn't find anything new.
--CS
====
Although it is almost the same as the TI 92
I would say, after reading the specs and
holding it in my hands in a store (together with the TI 92)
that the V200 is a much better product, BUT
since I'm more towards a vertical model
I would choose a TI 89 anyway (even if it is not as good)
> Is anyone familiar with this calculator?  It looks like they gave
> the 92 more memory, and a slightly different interface (still menus,
> no soft keys),and a better appearance.  It seems to have the same
> (dis)abilities as the TI-89.
>
> I've seen one TI-200 around campus, and I was wondering if anyone
> had intimate knowledge of it.  Are the commands different?  Is it
> any better than the TI-92?
>
> I know that this is way off subject, but I also know that there are
> a lot of calculator fanatics on this NG.  I'm a die hard HP user, but
> I work as a college tutor in the US.  As far as I know, I'm the only
> one at my school using the HP49.  There are three Engineering
> professors that use the HP48.  Everyone else I've seen uses the TI's.
>
> Someone came in the other day proudly displaying his TI Voyage 200
> and asked me if I knew anything about it.  I played around with it but
> couldn't find anything new.
>
> --CS
====
> Is anyone familiar with this calculator?  It looks like they gave
> the 92 more memory, and a slightly different interface (still menus,
> no soft keys),and a better appearance.  It seems to have the same
> (dis)abilities as the TI-89.
>
> I've seen one TI-200 around campus, and I was wondering if anyone
> had intimate knowledge of it.  Are the commands different?  Is it
> any better than the TI-92?
> 
> I know that this is way off subject, but I also know that there are
> a lot of calculator fanatics on this NG.  I'm a die hard HP user, but
> I work as a college tutor in the US.  As far as I know, I'm the only
> one at my school using the HP49.  There are three Engineering
> professors that use the HP48.  Everyone else I've seen uses the TI's.
> 
> Someone came in the other day proudly displaying his TI Voyage 200
> and asked me if I knew anything about it.  I played around with it but
> couldn't find anything new.
> 
> --CS
It is basically a TI-92+ with more FLASH memory and a new operating
system, AMS 2.07. I am not sure what this has that 2.05 doesnt but the
newest 2.08, which came out near it and should be very similar, has an
application desktop ripped off from Casio that supports only FLASH
apps. ASM programs and BASIC programs cant be accessed from here. AMS
2.08 also uses the quartz cyrstal in hardware version 2 calcs for a
time and date function. Time and date wont work on HW1 calcs since
they dont have the quartz crystal but thats irrelevant since all V200s
should be HW2. Mathematically you get 3 or 4 trig functions: sinh,
tanh, cosh and one other thing I think. In AMS 2.07/2.08 you basically
get a desktop, time, date, and a few trig functions for 140k of your
archive. That may not be a problem on the V200 with all its memory but
for TI89 users like me with only 768k FLASH, taking 140k for the above
is not worth it. I heard something about V200 users getting some FLASH
boards of course but if you dont want to get the forum OT you can
====
> Is it possible to simulate saturn cpu architecture in a fpga(field
> programmable gate array)
Yes.
>   Wherefrom i can get detailed architecture of saturn cpu?
====
> Is it possible to simulate saturn cpu architecture in a fpga(field
> programmable gate array)
Yes
>   Wherefrom i can get detailed architecture of saturn cpu?
Well, I do not know who has them, but if I was to redesign a SATURN, I 
would
not reuse the same architecture (internal), but redesign it as a modern 
CPU,
with a 5 level pipe and a cache. I would use a 32 bit or 64Bit UAL. This
would allow most instruction to run in 1 or 2 cycles.
The original Saturn is build around the Saturn 4 bit serial bus which is
extremely ineffective. this would not be something I would copy.
I do believe that someone started working on such a project, but never
finished it.
====
Is there a way to solve equation with 3 unknow without using the Matrix
Writer?
Maybe put then on Stack and using cmd solve?
Can you help me?
E.M
====
Elvis Mera <ellumfritzum@gmx.ch> schrieb
> Is there a way to solve equation with 3 unknow without using the
Matrix
> Writer?
> Maybe put then on Stack and using cmd solve?
> Can you help me?
a few days ago I read in the User Manual how to do that for
2 unknowns Chapter 8... Solving linear Equations
with the command RREF  Row-Reduced Echelon Form
You just need to type in *one matrix and type RREF ENTER
..Heiko
====
> Is there a way to solve equation with 3 unknow without using the Matrix
> Writer?
Whether you are using an HP49 or HP48 the
following method is the same. For a linear
system described by A*x=b where A is a square
matrix nxn and x and b are vectors nx1 then 
the solution is given by A^-1*A*x=A^-1*b or in
words the product of the inverse of A times the
vector b producing an nx1 vector. On the 
formidable stack place the matrix A in
form [[row1][row2][row3]], then press the
inverse key 1/x, then enter the b vector in 
the form [[b1][b2][b3]] and finally press the 
product key *. There you have it(?)
!Demeter!
====
Depending on the model you can solve a system of three variables with
/
SOLVE
SOLVEVX
LINSOLVE
RREF
and perhaps ISOL or even GREDUCE
Nope: with some of the commands you need to use SUBST
Also sometimes the SYST2MAT is useful
I would use /
    [vector]
    [[matrix]]
    /
=>
    [solution]
On the 48SX I may refine the solution with a residual correction., RSD
PS: you do have the HP 48G User's Manual, don't you?
    http://www.hpcalc.org/details.php?id=3937
>
> Is there a way to solve equation with 3 unknow without using the Matrix
> Writer?
>
> Whether you are using an HP49 or HP48 the
> following method is the same. For a linear
> system described by A*x=b where A is a square
> matrix nxn and x and b are vectors nx1 then
> the solution is given by A^-1*A*x=A^-1*b or in
> words the product of the inverse of A times the
> vector b producing an nx1 vector. On the
> formidable stack place the matrix A in
> form [[row1][row2][row3]], then press the
> inverse key 1/x, then enter the b vector in
> the form [[b1][b2][b3]] and finally press the
> product key *. There you have it(?)
>
> !Demeter!
====
> Is there a way to solve equation with 3 unknow without using the Matrix
> Writer?
> Maybe put then on Stack and using cmd solve?
On the HP49 in RPN mode, you put the coefficients and the solution
term from the first equation on the stack then a 4 (number of
soft key.  This will create a 4X1 matrix on level 1 of the stack.
You repeat this process for the remaining two equations.  Now you
should have three 1X4 matrices.  Now type 3 [ROW->].  This will give
you a 3X4 matrix.  Now go back to the [MATRIX] menu and go to the
[FACTR] menu.  Press [RREF] and the calculator will put the matrix
in reduced row-echelon form.  If you have Step-by-Step mode active,
it will show you how it's getting its answers.
The other way to do it is to type the three equations (using equation
writer or the stack) then typing 3 [ROW->] then type the variables
you want to solve for, the 3 [ROW->] then press [SOLVE] from the
[ALG] menu.  You don't get to see how the calculator comes up with
it's answers this way though, and it takes longer to type the equations
in.  I only very recently learned about this method (from this NG!),
but I will probably only use it if I already have the equations on the
stack.
You can also do it in the numeric solver, but I'm also not real
familiar with it; I don't know how to make it give me exact
answers.
I'm not sure how to do it on the 48.  I think that it has a numeric
solver similar to the 49.
====
arrange eq's like so:
ax+by+cz=d
ex+fy+gz=h
ix+jy+kz=l
enter your constants array
[d h l]
enter a 3x3 matrix
[[a b c][e f g][i j k]]
press divide key
thats it!
 
be sure to understand http://www.anti-matrix.net
====
This takes a while to do.  I just pull out my ti-89 that does it when
it is typed straight in.  Someone should write a little program that
counts the number of equations and then uses the method below to solve
the system.  I would but I am lazy and I am not the best programmer.
I am asumming that you are using a hp49.  Here is my method
1. type in equation.
2. type in any of the variables then use the SOLVE comand
3. now use the SUBST comand
4. solve for one of the remaining variables using SOLVE
5. use SUBST command
6. solve for the remaining variable (SOLVE)
now you have the numeric solution to one of the unknowns
7. use SUBST command
8. solve for an unknown (SOLVE)
9. use SUBST
10. SOLVE
now you have two unknowns
SUBST them in and SOLVE and you are done
This method is much easier if you press enter before you SOLVE becouse
then you dont have to type it in again.
====
>Should I buy a hp48 cable or a hp49 cable?
All you need for any of the 48 series calcs is a 48 cable.... it is a 4 pin 

to
9 pin cable
and it sells for $24.95 at Samson Cables
here's the link.. you can even see a picture of it...
http://www.samsoncables.com/catalog/prodDetail.cfm?Prod_ID=195&Sku=SCHP48
====
I noticed calcpro sells the cable for $15.  Is calcpro a good company to 
deal with?
====
I called their phone and got an answering machine.
If they are that hard to reach... how long do you think you will have to 
wait
to get your order ??????
a Saturday night.... now that is what I call proper service.
==
Better use the 2000 mAh Ni-Cad just available now.
 use four Panasonic P-170 SCR (KR23/43) .
> Each off these has a capacity of 1700mAh at 1.2V .
 This type of battery suits perfectly into the cblack holder.
>   I just got an HP-41 HP-IL based Thermal Printer (82162A) but it came
> with no battery pack. I was wondering if anyone knows the specs for
> the NiCads used in this printer? A colleague of mine has rebuilt
> several battery packs for several HP calculators and printers and says
> if I can get the specs. we should be able to fix something so as to
> get the printer working again. It looks almost brand new except for
> not having a battery pack.
>   > Harold A. Climer
> Physics/Astronomy Lab Instructor
> U. Tennessee At Chattanooga
====
When  i have entered the following function,ABS(1-ln(x)),i think that my 
HP49G
drew a wrong plot.Because x is allways over 0.Do it yourself.
P.S a re patriotes apo ellada,ante na kanoume fun club.
giannis
student
Greece
====
> When  i have entered the following function,ABS(1-ln(x)),i think that my
HP49G
> drew a wrong plot.Because x is always over 0.Do it yourself.
Enable Rigorous mode on your '49.
====
> [If this has been discussed here before, please point me to it.  Thanx.]
 The HP49G sometimes gives incorrect answers when ->NUM performed on ratios 
of
> large integers.  In the following examples, exact mode is assumed.
> Is the problem that the integers are converted to reals before performing
the
> division?  If so, is there an easy way to obtain accurate ratios of large
> integers on the HP49G?
>
I don't think there are any easy way, as most integers functions are
converted to reals by automatic dispatch mechanism.
However, you could carry out the division in fixed point, i.e. something
like this:
/<<  15 ALOG ROT OVER  * PICK3 IDIV2 4 ROLL  /->NUM / + SWAP / />>
It passes your 3 tests, but needs to be tested ( thought over)  properly.
It seems a bit of a kludge.
I think there is also some more elegant possibilities with residual
aritmetic using floating division and a suitable prime(s). There is
something in Knuths semi-numerical book. Maybe someone could check it.
Gjermund
====
X
> It appears that HP it reads the division as 1000000000000/1000000000000
> instead of 1000000000001/1000000000002 because any numbers after 12 
digits
> are considered to be zero.  With a Ti89, it gets 0.999999999999 because 

it
> uses internal 14 digits precision; this eliminates rounding errors in
> numerics.
X
> It would be good if HP added an extra internal digit or two in
calculations,
> it would make the last decimal place reliable.  I am unsure what the
> limitation was that this could not be done, but it's ok.  You can always
get
> the longfloat library at hpcalc.
BUT...how is this possible? I thought that the HP OS has internal 15digit
accuracy
in it's calculations (even more when you do some internal matrix
calculations)
Why this is not used here is beyound my imagination.
NO it is not! If I use SysRPL I get good answers.
That means that in User RPL the coversion gives you *every* intermediate
answer in 12 digits and then these are used in subsequential calculations,
like it always used to do.
What people want here seems to be like asking the ->NUM
to start a small SysRPL de/compile project to get enhanced precision
for the output. Not a bad idea at all!
Go long-reals go!
====
39g: $40
49g: $190
About 5 of each.
Martin Cohen
====
I have an old HP41cv, it works just fine, but I have problems with  the
battery pack. Is there a solution to exchange the battery pack with some
more normal batteries or something like it?
Please help, I don't want to lose the calc.
Have a nice day and thanks for answers:)
Borut Korpar
borut.korpar@uni-mb.si
====
Note that you have now the 450mAh NI-MH to put in the normal batterie pack
(without the recharging inside).
 I have an old HP41cv, it works just fine, but I have problems with  the
> battery pack. Is there a solution to exchange the battery pack with some
> more normal batteries or something like it?
 Please help, I don't want to lose the calc.
 Have a nice day and thanks for answers:)
====
What is the difference between a  hp49g+ and the hp49g and who sells the
====
====
>Mmmmm... An HP41 with >1Mb RAM... 
and a much better CPU than the Saturn. And much faster.
>a display that shows the complete  stack, plus some registers... 
how will you realize that in a calc, where the stack can take full
memory capacity?! How large will the display be? 50? ;-)
>accessories to go with it such as barcode scanners, data collection gear 
>etc ... the same simple HP41 language, but with every extension module 
>ever developed in ROM... maybe a few PDA-type applications -- diary, 
>address book, text editor, to-do list... simple graphics display... an 
>XScale CPU...
And a kind of mobile mass-storage system. For instance a drive with
small MODs, like the Sony MiniDisc.
But i wouldn't even refuse e sophisticatesd type of megnetic cards...
Or, better, ist can handle CF-Cards, Type II preferred.
With the new 3 and 4GB Microdrives there wouldn't ever be any
memory-problems... ;-))
====
Or just imagine the 67CX ;-)
.. ;-))
====
> 
>Mmmmm... An HP41 with >1Mb RAM... 
> 
> and a much better CPU than the Saturn. And much faster.
> 
>a display that shows the complete  stack, plus some registers... 
> 
> how will you realize that in a calc, where the stack can take full
> memory capacity?! How large will the display be? 50? ;-)
We're talking about a super HP41 here, aren't we? Therefore the stack is 
only X,Y,Z,T and L , not the unlimited depth stack of a 48. And frankly, 
for day-to-day calculations without surplus keystrokes I much prefer the 
41's four-level stack.
====
>Every time that a card gives me spurious Invalid Card Data errors, it 

gets
>solved by cleaning the card's contacts AND the port's contacts.  The 
latter
>can be done by doing the former, then inserting and removing the card a 
bunch
>of times, and repeating until no more gunk shows up when cleaning the 
card's
>contacts.
I even have a few cards that only work when FIRMLY seated.  Just plugging 

'em
>in isn't enough; I have to WIGGLE 'em in place and then push hard on both 
of
>well... until I drop the calculator and the card moves slightly.  )-:
Hey, anybody know a better way to clean the port contacts?  My way seems 
like
>brushing one's teeth with a TOOTSIE ROLL.  (Would that lead to TOOTH ROT?  

Do
>dentists perform TOOTH UNROT?  Should I use a TOOTH PICK or a TOOTH 
UNPICK?)
-jkh-
>
 Someone once told me to use an eraser similar to one on a number 2
lead pencil. An ink eraser might work too. It seems to be a bit more
abrasive. I used these methods on my old TI-59 printer contacts and
TI-59 calculator.
====
====
 I'm trying to set up some equations for chemistry course on an
HP48GX, to be solved using the equation solver. The solver is a good
way to do it because any of the variables may be called for in a
problem. For example, an equation that defines the change in
equilibrium constant with temperature:
Ln(K2/K1) = Ea/8.314 * (1/T1 - 1/T2)
A given problem could ask for K2, K1, T2, T1, or Ea.
 That part works in the solver.
 However, every new problem that is done leaves the home or current
directory cluttered with new variable names. To get around this, I
made a program that makes a new subdirectory 'temp', switches to it,
and sets the variable 'EQ' to the desired equation. It would be nice
to start the 'solve' function by program, and then automatically clean
up by UPDIR and purging TEMP. But there seems to be no way to start
'solve' within a user program, so I have to just prompt to start the
solver, and make up a temporary menu with a command DONE, that the
user presses after using the solver, that does the cleanup.
  Does anybody know a way to use the solver within a user program? Or
could someone suggest a whole different approach?
====
> Does anybody know a way to use the solver within a user program?
30 MENU does the trick.
The following program stores an equation into 'EQ', starts the solver, and
then when you press the CONT key it cleans up after itself.  sqrt is 
the
square root symbol.
<<  'S=E*sqrt(1-V^2)'  STEQ  30  MENU
  HALT  { S E V } PURGE  2  MENU  >>
S = elapsed time in Space
E = elapsed time on Earth
V = velocity / speed of light (e.g. .5 means half light speed)
Run the program.  Play with Einstein's Twin Paradox.  When finished, press
CONT (shift-ON).  The variables automatically get purged.
The above is just one way to do it.  Many others have been discussed here 

over the years.
====
 
and buy a HP 49G !!
+ 128KB RAM merged in for a total of 256KB RAM
+ 256KB IRAM port 1 (automatically handled 2*128KB)
+ 1MB FlashRAM port 2 (autohandled 8*128KB, needs no battery!)
Upgradeable OS double sized from 512KB to 1MB to include
    (no need for 128KB memory module in port 1)
+ Erable49 & ALG49 totally integrated
    (no need for using a 128KB slot in a 1MB RAM card)
+ much more..    (like: CAS-Help; Catalog of commands;
    (shift&hold keylevels; EQW enhanced Matrix Writer,...)
* The cursor keys are now usable in the Alpha mode, too!!!
The HP 49G gives you the best value for every euro you pay for it.
> chris heaton meinte
 >Could I fit all of that on 2 128kb cards? That would be 384kb.  I dont
>think that I would ever uses up 1mb+128kb+128kb so I would feel
>wastefull.
 You should not think that limited. 128KB for slot 1 is a technical
> restriction you can't avoid. For the second slot the decision should
> be based on cost effectiveness. If you accept the proposal to buy at
> Klotz, an alternative could be CYNOX, you'll find out that a 2MB
> card is comparable _much_ cheaper than a 128KB card. That is about 40$
> versus 110$ for 16 times storage capability.
 or two MB in slot 2 give you the flexibilty for intelligible backup
> strategies, lots of libraries you currently even dont think of, etc...
 Summary: buy one 128KB card. If you buy a second card don't waste your
> money with another 128KB card, go at least for a 1 MB card, perhaps
> even better a 2 MB card.
 Gru� G.9fnter Schink, Slot 1 128 filled with MK, Slot 2 
populated :-)
> with Organizer, Scribe, ALG48, Sokoban, Tetris, Pac Man, plotting
> programs etc....
====
>I've got a pretty esoteric question: why does HP-16C index register have
>68 bits when all normal registers can be at most 64 bit long? What those
>4 extra bits could be used for, bar writing (nearly) endless ISZ loops,
>I mean.
Can you explain how you came to the conclusion that the index register 
is longer than the others, please? It's not something that I've heard of 
before.
it's stated in the 16C manual,
in the part where the index register is explained,
and in some other places, like memory allocation.
But the manual doesn't explain why it is wider than the others.
.
 
====
I have converted 12 new games for various HP calcs. See my website:
http://www.noda.online.fr
WARNING: A bug have been reported with teh hp49 version of BomberHP,
it can cause TTRM sometimes! I'll fix it as soon as I find teh bug.
====
There's a document at http://www.hpcalc.org/hp48/docs/misc/hp48image
describing the way how to extract data from a real HP48 and put it into
Emu48.
Christoph
Al Adrian <ara__@SPAMNOTwanadoo.nl> schrieb im Newsbeitrag
> Can you elaborate on how to use of the emulator for this purpose?...
 For example, if i wanted to create an exact duplicate of my calculator in
> the emulator (emu48)...I'd... ??
 And going the other way.. say if I had evaluated some particular software
> and now wanted to download the emulator's setup to the calc...I'd... ??
> Use the Emulator!
> (-:
> PS: a port name :IO: will ARCHIEV & RESTORE through the serial
>     to your PC, but only RAM )-:
====
> ...
>> Agreed. I think actions speak louder than words. ACO is terminated.
>> Kinpo calcs are being rebadged as HP, and no one sells HPs anymore.
 BTW, has anyone out there actually _seen_ a 9S or 9G in a store?
So far I haven't seen it in any stores... and I live in Canada.
====
 
1) I do not consider the 9s and 9g as canon HPs.
2) We've accelerated our product development plans and begun working with
our new aggressive sales and marketing partners around the world. can 
mean
ABSOLUTELY anything or nothing. Plans are plans, and he only talks about
SALES AND MARKETING, not actual R&D.
3) I'll believe only what I see. Right now, HP has gone the way of the
super-crap TI-like too expensive for what it's worth TOY.
==
> There is a press release announcing the 9s and 9g at:
 The following quote comes from it:
 The HP 9s and HP 9g are just the beginning of what we have in store for
> our customers throughout the coming year, said Fred Valdez, general
> manager, Calculator Division, HP Personal Systems Group. We've
> accelerated our product development plans and begun working with our new
> aggressive sales and marketing partners around the world.
 
====
How about this for rumors:
http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/forum.cgi?read=29158
====
In ten years of extensive use, my HP48GX is starting to fail. I get a reset
almost every day, and the memory is lost. It is not the battery and I'm not
using any card, sometimes it just hungs up and performs a 'soft reset' as
pressing ON-C, but sometimes I get the annoying hard reset, and I loose all
memory.
====
> In ten years of extensive use, my HP48GX is starting to fail.
 Can anyone give me a good
> reason why I should not go for a TI?
> 
Well, the TI may also give you ten years of extensive use, but???
I am of the opinion that if you have to ask, buy TI.  
The Ti-89 is TI's latest (actually the V-200 is, but both are about equal).  
.
====
I am a highschool student.  I have a ti-89 and a hp49.  The ti-89 has
better hardware in almost every way except for memory (it still has
plenty).  The speed is one major advantage of the ti-89.  I dont do
any of my graphing on the hp.  I think that they are about equal in
math capability, but I prefer the CAS of the 89.
The lack of RPN slows you down a little when doing numerical
calculation, but it speeds you up when using the CAS.  Consider for
example solving an equation.
on 89: solve(3x+2y=2z,x) 
on 49: 3x * 2y * + 2z * = x SOLVE
  it is more keystrokes becouse it interpretes 2x as 2 SPC x instead
of 2(x)
  I wish that it would interpret it as 2(x) and then it would be
quicker.
In conclusion, I think the only disadvantages of the 89 are the lack
of RPN and soft menues.  And the lack of RPN is not that bad.  It is
nice to be able to look at the answer and what you typed in at the
same time so you can insure that you no typos.  I would recommend the
ti-89 over the hp-49.
====
> I have the following matrixes:
> 
> A = [[-0.120273333333 -1]
>      [0.64102 0]]
> 
> B = [[-0.64102]
>      [0.120273333333]]
> 
> What do you think?
> 
I think you should enter -1. and 0. in the matrix A (note the decimal 
points),
it will work then.
Apparently the numeric solver doesn't check the type of the input matrix
(in this case, A is type 29. because it contains an integer - if you change
the -1 and 0 to -1. and 0., the matrix type becomes 3. - real matrix.)
Definitely a bug.
 
====
 Usually the numeric solver in HP49 (the solve lin sys in this case)
> seems to work ok, but today it gave me really strange results. Either
> this is a bug or (more likely) I've managed to set some very esoteric
> flag. But I can't find what is wrong and a on+F3 doesn't helt. ROM
> version is 1.19-6
 I have the following matrixes:
 A = [[-0.120273333333 -1]
>      [0.64102 0]]
 B = [[-0.64102]
>      [0.120273333333]]
> I enter num.solv with rshift 7 4. I choose (F2) the matrix A for 
A
> and B for B, scroll to X and press solve.
 Solution: [[-2.9095203426E-26]
>          [-6.4164881584E72]]
 But if I open the solver and use the matrix writer to enter the
> matrices, I get those strange values.
 Can anyone shed any light on this?
 
matrices.
Enter numeric ( e.g. by usig real values), or you convert them first. Then
the results seems ok
Try:
'A' RCL redshift and ENTER 'AA' STO
'B' RCL redshift and ENTER 'BB' STO
Using the numeric solver with numeric matrices AA and BB gives
[[ .187628 ][ .618453 ]]
Using symbolic mattrices
One result I got was
[[[ -8. E-26 ][ -6.E72]]
Later/next time I got
Solutions: Symbolic Matrix
Which is an object with size 7789. bytes, and at a closer look perhaps is a
program/ list of pointers and other stuff.
Tried to evaluate this object. Can't see anything happen.
HOWEVER, trying a third time, result in a MEMORY CLEAR
You should report this on the bug list as a SERIOUS bug.
There is something strange going on here.
 
====
> 
> I think you should enter -1. and 0. in the matrix A (note the decimal 
points),
> it will work then.
> Apparently the numeric solver doesn't check the type of the input matrix
> (in this case, A is type 29. because it contains an integer - if you 
change
> the -1 and 0 to -1. and 0., the matrix type becomes 3. - real matrix.)
> Definitely a bug.
====
> Is anyone familiar with this calculator? 
I own one!
As far as hardware is concerned, it is basically a Ti-92+ with more flash 
memory and a smaller form factor. Same speed and same amount of RAM though 
(what a pity).
For those who don't know, the main processor is a MC-68000, which is a very 

nice and fast processor. I suppose it will be easy to overclock it 
significantly (I'll do it when my warranty expire).
As far as software is concerned, the current OS is AMS 2.08, which includes 

the full set of trig and hyperbolic functions (24 of them), a useless icon 
desktop, and a full set of clock functions.
Built in apps include data/matrix editor, grapher, numeric solver, program 
editor, text editor, table editor, function editor
Bundled apps include a spreadsheet, stat package, simult eq solver, finance 

tool, polynomial root finder, and two very nice geometry tools
Now my personal judgement as an HP lover (I have/had an HP-41CV, HP16-C, 
HP49G, as well as a Sharp PC-1500, TI-58, Casio FX-702P).
The V200 hardware is head and shoulder above the HP49G. Unfortunately, the 
software is not very well optimized and for most tasks, the speed is not 
really up to par. In most cases however, it is still faster than an HP-49G.
The TI software is significantly less powerful than the HP49G. However it is 

====
>             http://hrastprogrammer.tripod.com/
> 
> Can someone (hrastprogrammer ?) shed some light on just what happened ?
> Perhaps it would be useful to know, just in case ...
====
http://www.hpmuseum.org/
====
Some might prefer the classical 4-level RPN stack to the 48/49 style
stack. Or there might be some favorite programs that you don't feel
like porting.
I personally prefer the classical 4-level stack.
...
====
I expect to start finding bugs this week. :-)
> a Saturday night.... now that is what I call proper service.
9s & 9g from Samson Cables:  $61.90  ($11.95 + $49.95)
9s & 9g from CalcPro:        $49.90  ($14.95 + $34.95)
For 5 cents less than a 9g at Samson Cables, you get a 9g and a 9s at 
CalcPro.
HPCC #1046
====
  I just got an HP-41 HP-IL based Thermal Printer (82162A) but it came
with no battery pack. I was wondering if anyone knows the specs for
the NiCads used in this printer? A colleague of mine has rebuilt
several battery packs for several HP calculators and printers and says
if I can get the specs. we should be able to fix something so as to
get the printer working again. It looks almost brand new except for
not having a battery pack.
====
use four Panasonic P-170 SCR (KR23/43) .
Each off these has a capacity of 1700mAh at 1.2V .
This type of battery suits perfectly into the cblack holder.
====
I have an old HP41cv, it works just fine, but I have problems with  the
battery pack. Is there a solution to exchange the battery pack with some
more normal batteries or something like it?
Please help, I don't want to lose the calc.
Have a nice day and thanks for answers:)
====
Note that you have now the 450mAh NI-MH to put in the normal batterie pack
(without the recharging inside).
====
>Mmmmm... An HP41 with >1Mb RAM... 
and a much better CPU than the Saturn. And much faster.
>a display that shows the complete  stack, plus some registers... 
how will you realize that in a calc, where the stack can take full
memory capacity?! How large will the display be? 50? ;-)
>accessories to go with it such as barcode scanners, data collection gear 
>etc ... the same simple HP41 language, but with every extension module 
>ever developed in ROM... maybe a few PDA-type applications -- diary, 
>address book, text editor, to-do list... simple graphics display... an 
>XScale CPU...
And a kind of mobile mass-storage system. For instance a drive with
small MODs, like the Sony MiniDisc.
But i wouldn't even refuse e sophisticatesd type of megnetic cards...
Or, better, ist can handle CF-Cards, Type II preferred.
With the new 3 and 4GB Microdrives there wouldn't ever be any
memory-problems... ;-))
====
> 
>Mmmmm... An HP41 with >1Mb RAM... 
> 
> and a much better CPU than the Saturn. And much faster.
> 
>a display that shows the complete  stack, plus some registers... 
> 
> how will you realize that in a calc, where the stack can take full
> memory capacity?! How large will the display be? 50? ;-)
We're talking about a super HP41 here, aren't we? Therefore the stack is 
only X,Y,Z,T and L , not the unlimited depth stack of a 48. And frankly, 
for day-to-day calculations without surplus keystrokes I much prefer the 
41's four-level stack.
====
>Every time that a card gives me spurious Invalid Card Data errors, it 

gets
>solved by cleaning the card's contacts AND the port's contacts.  The 
latter
>can be done by doing the former, then inserting and removing the card a 
bunch
>of times, and repeating until no more gunk shows up when cleaning the 
card's
>contacts.
I even have a few cards that only work when FIRMLY seated.  Just plugging 

'em
>in isn't enough; I have to WIGGLE 'em in place and then push hard on both 

of
>well... until I drop the calculator and the card moves slightly.  )-:
Hey, anybody know a better way to clean the port contacts?  My way seems 
like
>brushing one's teeth with a TOOTSIE ROLL.  (Would that lead to TOOTH ROT?  

Do
>dentists perform TOOTH UNROT?  Should I use a TOOTH PICK or a TOOTH 
UNPICK?)
-jkh-
>
 Someone once told me to use an eraser similar to one on a number 2
lead pencil. An ink eraser might work too. It seems to be a bit more
abrasive. I used these methods on my old TI-59 printer contacts and
TI-59 calculator.
====
> Hey, anybody know a better way to clean the port contacts?
> Someone once told me to use an eraser ...
Card contacts, ok.  But how about the *port* contacts?
====
samsons cables still has them.  And you can get them on ebay for less
than the hp48gx
> Well folks.... I guess I don't have much choice after all...
> 
> Nobody has  anymore 49G's to sell... at least, not in the web stores
> 
> but the 48GX is still on HP's website..... whatever that means
> 
> I suppose with a few plug-in cards that'll do nicely, actually it's 
probably
> the better calculator anyway
> samsons cables still has them.  And you can get them on ebay for less
> than the hp48gx
 Well folks.... I guess I don't have much choice after all...
 Nobody has  anymore 49G's to sell... at least, not in the web stores
 but the 48GX is still on HP's website..... whatever that means
 I suppose with a few plug-in cards that'll do nicely, actually it's
probably
> the better calculator anyway
====
> How would I go about solving for an equation with a variable in the
> exponent, such as:  (e^x)-(e^-x)=3?
On my ROM v1.19.6 it works:
'EXP(X)-EXP(-X)=3' 'X' SOLVE
->
{ 'X=-(LN(2)+(-(2*i*n2*pi)-LN(3+SQRT(13))))'
'X=2*i*n1*pi+LN(-((-3+SQRT(13))/2))' }
====
> The number of Inquisition deaths throughout history obviously
isn't
> something people kept accurate records about, but I've seen the
> estimate of nine million, which is close enough to JYA's
statement.
> This number might be utterly wrong, but I've seen it more than
once,
> so presumably a lot of people have read it too.
 Apparently there has been some scholoarly work done.  See
> http://www.bringyou.to/apologetics/num25.htm
>  which seems to place the numbers somewhere around 30,000 with a
lot of criticism of one author who claims 300,000.  The site is
> interesting because the end of the page lists a great number of
authorities.
I'm glad we finally got away from that useless namecalling and onto
something useful like whether the Inquisition or the Holocaust
killed more people.
The only thing important to take from any of this is that we humans
have a very cruel and stupid side to our nature.
Right now our civilization is probably in more danger than ever
before.   Some say Bush is the reason.  Some say Sadaam is the
reason.  I think we're all the reason.
Each of us has one and only one thing we can do about the world
situation.  We can control ourself.  That's the only influence we
have.  I suggest using it.
====
I have a list of reals and I want to work with them.
The problem is this:
For example, 5. in the stack is 33920 0000 0000 0000 0050
but inside a list is 0A9F2.
Why is that?
How can I recognize when it is encoded as a five nibble structure (I
guess it's an address) or the usual 21 nibble structure of a real?
I need to know this in order to handle the list of reals in a proper
way.
====
I have a series of x,y points which I believe are part of an 
ellipitical or circular curve.
Does anyone have a pointer to a program which will allow me to 
deduce/discover the formula of the curve?
I'm presuming some sort of least-squares calculation, but I have been 
unable to find a formula for fitting to curves (lines yes, curves no).
I *think* there was one in one of the HP formula books for the 
HP-65/HP67 but my copies seem to have disappeared long since..
====
Sorry.... made a typo in my first reply
The Parenthesis has to be around the entire Exponent
say for example
25*e^(pi/2*i)
which would give (25 <90) with calculator in degree mode if you did 
rshift+EVAL
====
> You're talking about hp49? (Hp48 has 64 flags).
Yes, of course - sorry. On the '48 run this program:
<< DO DUP EXPAN UNTIL DUP ROT SAME END DO DUP COLCT UNTIL DUP ROT SAME END
>>
It's a very slow approach though, so if you need to do this alot, you'd 
want
to install ALG48 and use its RSIM command.
====
Yes, I had already thought of that (since I couldn't see how many
EXPANs I needed, do until the expression didn't change), but I don't
think you need the second loop (just one COLCT needed). I just wanted
to know if I was missing some hp built-in command or if I could do the
same with a FOR loop instead of a DO loop.
About Alg48, I'd like something that I can include in a small
colection of programs, so the slow but small RPL program might be
better.
> You're talking about hp49? (Hp48 has 64 flags).
> 
> Yes, of course - sorry. On the '48 run this program:
> 
> << DO DUP EXPAN UNTIL DUP ROT SAME END DO DUP COLCT UNTIL DUP ROT SAME 
END
> 
> It's a very slow approach though, so if you need to do this alot, you'd 

want
> to install ALG48 and use its RSIM command.
> 
====
To communicate between them I use a freeware software in iPAQ (3760)
called Filegram (http://www.neutrio.com/wince/Filegram/filegram.html),
which allows to communicate with the XModem protocol, and I change the
communication settings in HP to be able to communicate:
iPAQ (3760) Filegram:
Protocol: XModem
Flow Control: None
Port: Com2
Speed: 2400
Slow Down Transmission: yes
And in HP48GX we have (In I/O Settings):
IR/Wire: IR
ASCII/binary: binary
baud:2400
parity: none 0
cksum: 3
translate: 1
Then you can choose to send a file (XSEND) or receive a file (XRECV),
just put the name on the stack and run the command.
There is another program more 'powerfull' that even supports KERMIT,
but is not freeware, called vxHpc (http://www.cam.com/vxhpc.html),
which I don't use because it corrupted the iPAQ memory a few times,
but besides that is very good...
 
I've made a library to HP48, that automatically changes the I/O
parameters to allow communication with Filegram in iPAQ, and restores
them after transferring in a transparent way, If you are interested
it in HPCalc since there's not a lot of information available.
Paulo Pinheiro
> Any idea how I can get these to talk to each other with IR?
> Anybody tried it?
> I want to know if I can exchange information this way rather than get
> the HP48G comms cable for my desktop PC.
> 
> I have used PeaceMaker pro for my Ipaq in the past which has pretty
> good for communicating with other devices by IR, for instance palm
> pilots and handheld scanners. Not sure if it works for the 48G tho.
> 
====
---------------------------------------------------------------------
Hallo !
I just analyzed the video signals on the 10 pin connector of the HP38G
calculator. I think they are more or less identical to the HP48GX
signals found on the internal connector.
But I found a problem with the vertical synchronization. This bit
sometimes vanishes, for instance in the plot screen without any menue
bar.
Does anybody have any further informations about the display video
signals?
There had been some overhad displays for the HP38G and HP48GX. How they
done it ??
====
> use this kind of calc, but the big prob is I dont know how to use
> that, so if you know where can i get a manual for this calc + card,ill
> be very happy.
on www.hpcalc.org you will find a lot of usefull stuff. And there you find
also a manual for the HP48G/GX (works for the HP48SX too) in pdf-format. 
But
be warned, it's a huge file!
Roman
 Fred
====
Usually the numeric solver in HP49 (the solve lin sys in this case) 
seems to work ok, but today it gave me really strange results. Either 
this is a bug or (more likely) I've managed to set some very esoteric 
flag. But I can't find what is wrong and a on+F3 doesn't helt. ROM 
version is 1.19-6
I have the following matrixes:
A = [[-0.120273333333 -1]
     [0.64102 0]]
B = [[-0.64102]
     [0.120273333333]]
I enter num.solv with rshift 7 4. I choose (F2) the matrix A for A 
and B for B, scroll to X and press solve.
Solution: [[-2.9095203426E-26]
             [-6.4164881584E72]]
this is obviously wrong. However cond(A) = 1.7476 and if I remember my 
numerical linear algebra correct this indicates that the problem is NOT 
numerically instable.
If I try X = A^(-1)*B I get the more resonable solution [[0.187628]]
                                                                           

[0.618453]]
(remaining digits omitted) which is about what MATLAB R12.1 also says.
This is probably not how num.solv is implemented but since the condition 
number is so low we should expect the difference to be small iirc.
Of course the problem is trivial to solve by hand. But there must be some  
reason the calc behaves in this way?
What do you think?
====
I hope somebody, kindly soul reads this :-)
I have this 2.order diff. equation, which I enter, this way in my hp49:
d1d1Y(X) + 4*d1Y(X) + 4*Y(X) = e^(-3*x)
'Y(X)'
Then I get a solution, which I cannot see whether is correct or not, 
because
in my math classes we donろ get solutions like that...
My hp49 gives this result:
{
'Y(X)'=(EXP(2*X)+((2*X+1)*cC0+(X*cC1+(X-1)))*EXP(3*X))/(EXP(3*X)*EXP(2*X))' 

}
By hand I get this solution: y(x) = c1*e^(-2*x) + c2*t*e^(-2*x) + 
e^(-3*x)
; c1, c2 is real numbers...
My hand-solution looks much better than my hp49g-solution.
Iわe tried to simplify my hp49g-result, but it 
wonろ do any better.
Anyone knows the secret here?
I canろ see if the two results are the same............
Another derived question is: When I get the result,
{
'Y(X)'=(EXP(2*X)+((2*X+1)*cC0+(X*cC1+(X-1)))*EXP(3*X))/(EXP(3*X)*EXP(2*X))' 

} and I press down-arrow, the editor opens in text-edit-mode (or whatever
itれ called).
So I have to manually erase the { in the beginning and the } in the 

end,
to be able to get the equation into the equation writer-editor... 
Isnろ
there a command for that, or is it really necessary to use the arrow-keys
and press backspace and press down-arrow key + rightshift + right-arrow +
backspace to get rid of these (stupid) {}-characters???
I hope my question is clear enough,
if not - be sure to give me your comments,
and thanks in advance for any posts that helps me (and others as well, I
guess)...
====
Is it possible to simulate saturn cpu architecture in a fpga(field
programmable gate array)
  Wherefrom i can get detailed architecture of saturn cpu?
====
What happened to Hrastprogrammer !!??
He seems very upset indeed, and has deleted from the web any info
or details on his wonderful HP-41X, HP-42X and HP-71X emulators for the
HP-48GX/49G !!!, just see this link:
            http://hrastprogrammer.tripod.com/
Can someone (hrastprogrammer ?) shed some light on just what happened ?
 ..
====