B32 ==== Which ROM-version is the best for the HP49G and where can I download it? I could only find 1.18 on hp.com and hpcalc.org. I've been told that there are newer once, but I can't find them and I don't know if they're good/stable. ==== > Which ROM-version is the best for the HP49G and where can I download it? > I could only find 1.18 on hp.com and hpcalc.org. I've been told that > there are newer once, but I can't find them and I don't know if they're > good/stable. > Try www.hpcalc.org/hp49/pc/rom/ ==== I already posted this once, but I didn't get an answer. The program works fine except that the maximum speed is 5.6 revolution to second(that mean ~44Km/h). I would appreciate it if someone could help me to achieve 60Km/s ~7.7Hz. 0 STIME TICKS DO DO 1 SRECV DROP2 TICKS DUP ROT - B->R 64290.816 SWAP / SWAP + Km/h. + 3 DISP 'j' INCR DROP UNTIL KEY END UNTIL 13 == END Tal ==== How about adding the and Km/h from a local variable and also the 64290.816, say b, k and r Is it faster then? Km/h 64290.816 -> b k r << 0 STIME TICKS DO DO 1 SRECV DROP2 TICKS DUP ROT - B->R b r ROT / + k + 3 DISP 'j' INCR DROP UNTIL KEY END UNTIL 13 == END > Also since you have 'j INCR DROP can you transform it into a FOR 'j' ... NEXT -loop where KEY would exit by STOring MAXR to 'j' IF KEY 13 == THEN MAXR 'j' STO END So it becomes: Km/h 64290.816 -> b k r << 0 STIME TICKS 1 1E12 FOR j 1 SRECV DROP2 TICKS DUP ROT - B->R b r ROT / + k + 3 DISP IF KEY 13 == THEN MAXR 'j' STO END NEXT > One more: Is 'j' Integer, real, or binary? real is faster than integer. I would change everything to reals: Km/h 64290.816 -> b k r << 0. STIME TICKS 1. 1.E12 FOR j 1. SRECV DROP2 TICKS DUP ROT - B->R b r ROT / + k + 3. DISP IF KEY 13. == THEN MAXR 'j' STO END NEXT > AND I have even more ideas after you have tested the combinations of these. Veli-Pekka I already posted this once, but I didn't get an answer. > The program works fine except that the maximum > speed is 5.6 revolution to second(that mean ~44Km/h). I would appreciate it if someone could help me to achieve > 60Km/s ~7.7Hz. 0 STIME > TICKS > DO > DO > 1 SRECV > DROP2 > TICKS DUP ROT - B->R 64290.816 SWAP / > SWAP + Km/h. + > 3 DISP > 'j' INCR DROP > UNTIL > KEY > END > UNTIL > 13 == > END Tal ==== > How about adding the and Km/h from a local > variable and also the 64290.816, say b, k and r > Is it faster then? X > Also since you have 'j INCR DROP > can you transform it into a FOR 'j' ... NEXT -loop > where KEY would exit by STOring MAXR to 'j' > IF KEY 13 == THEN MAXR 'j' STO END X > One more: Is 'j' Integer, real, or binary? > real is faster than integer. X > AND I have even more ideas after you have tested > the combinations of these. ()/&##@£$? There are always several severe errors in my fast replies. We try another time with a SREPL stub for testing: << Km/h 64290.816 MAXR ->NUM -> b k r m << 2. FIX @ or anything else you like 0. STIME MEM DROP @ forced GC TICKS 1. 1.E12 FOR j 1. SRECV @ remove the quotas for real work DROP2 TICKS DUP ROT - B->R b r ROT / + k + 3. DISP IF KEY THEN IF 13. == THEN m 'j' STO END END NEXT > BYTES => # B85Ch 222.00 Veli-Pekka ==== > I would appreciate it if someone could help me to achieve > 60Km/s ~7.7Hz. Try EPO :-) ==== Hp48gx - error Invalid Card Data I have this error when I use a Math-card in port1. When I use the same card in port2, there is no error. Any suggestion what is wrong?? ==== > Hp48gx - error Invalid Card Data > I have this error when I use a Math-card in port1. > When I use the same card in port2, there is no error. Any suggestion what is wrong?? Is this card a bigger-than-128k card? If yes, then you *must* use it in port 2. - Computers can never replace human stupidity. ==== > Hp48gx - error > > Invalid Card Data > I have this error when I use a Math-card in port1. > When I use the same card in port2, there is no error. > > Any suggestion what is wrong?? Is this card a bigger-than-128k card? If yes, then you *must* use it in > port 2. > - > Computers can never replace human stupidity. No, the card is not bigger than 128 card. ==== Perhaps you should use PortINIT command PINIT and for clarity: not physically bigger, but more RAM than only 128KB... > Hp48gx - error > > Invalid Card Data > > I have this error when I use a Math-card in port1. > > When I use the same card in port2, there is no error. > > Any suggestion what is wrong?? > > Is this card a bigger-than-128k card? If yes, then you *must* use it \ in > port 2. > > > - > Computers can never replace human stupidity. No, the card is not bigger than 128 card. > ==== > Perhaps you should use PortINIT command PINIT > and for clarity: not physically bigger, > but more RAM than only 128KB... > No, the card is not bigger than 128 card. > How to use PINIT & check RAM > 128K on my card ? ==== > How to use PINIT & check RAM > 128K on my card ? > 1) LS2 NXT PINIT 2) With the card in slot 2 (where it's working ok, isn't it?) press LS2 and then PORT. If you see only ports 0 and 2, the card is 128Kb. Each new port you see, add 128Kb more. ==== 1) LS2 NXT PINIT 2) With the card in slot 2 (where it's working ok, isn't it?) press LS2 and > then PORT. If you see only ports 0 and 2, the card is 128Kb. Each new port > you see, add 128Kb more. > 1) Have tried this, but dident work. Still no card in port 1. Only in port 2. 2) I have put my card in port 2, and I see only port 0 and 2. So my card is 128K Why cant I use this in port 1. 3) My manual for the cards says that I can use both ports for the cards and that I can use both cards at the same time. ==== > My manual for the cards says that I can use both ports for > the cards and that I can use both cards at the same time. This looks like new info that you have *two* cards; could it be that it is your *other* card that is causing the Invalid Card Data? Slide any write protect switches toward the center (if standard Epson cards with sliding shutters), to enable writing, then plug in and type PINIT. Do not plug > 128K into slot 1. Do not use any manual bank select card in slot 2. Replace any old card battery (read manual carefully first!) Also replace any old calc batteries, and watch out for GRiD brand card, if any (what brand is each card, anyway?) Good luck! . ==== > 1) Have tried this, but dident work. > Still no card in port 1. Only in port 2. 2) I have put my card in port 2, and I see only port 0 and 2. > So my card is 128K > Why cant I use this in port 1. 3) My manual for the cards says that I can use both ports for > the cards and that I can use both cards at the same time. Could it be possible that this card is designed to work only on an HP48SX? If it's a non-HP card, it may be possible. - TK> A la rentr.8ee proposer un seul forum jeux vid.8eo mod.8er.8e Si c'est le cas je sollicite un droit de regard sur le travail des mod.8erateurs, avec d'autres joueurs volontaires. -+- Spip in Guide du Neuneu Usenet - Mod.8erons les mod.8erateurs ==== 1) Have tried this, but dident work. > Still no card in port 1. Only in port 2. When executing PINIT, you see nothing... If the card doesn't work, sorry: > 2) I have put my card in port 2, and I see only port 0 and 2. > So my card is 128K > Why cant I use this in port 1. Can you install a different card in slot1 for being sure this slot is ok? > 3) My manual for the cards says that I can use both ports for > the cards and that I can use both cards at the same time. I'm afraid that can't hepl more... ==== I just got my first HP, an HP49G. I've some questions: 1. How can I see the Demo? I run it once an can not find it again. 2. How can I find my ROM version? 3. Where can I find a good manual? thanks, ==== > I just got my first HP, an HP49G. > I've some questions: > 1. How can I see the Demo? I run it once an can not find it again. Use Filer to search it in your port 2 = The Flash Memory > 2. How can I find my ROM version? VERSION > 3. Where can I find a good manual? http://www.engineering.usu.edu/cee/faculty/gurro/myBooks.htm thanks, You're welcome! ==== Good morning everyone. Sorry for this off topic post, but I'm not certain where else to post this. I have an HP48-GX, barely used, along with several programming manuals and the HP interconnect cable to connect to a serial port. I have no real need for this, and would like to sell it to someone that might appreciate and use it. (I used to live off an HP-41cv, and when it broke, and the upgrade price to a 48 was cheaper than the repair...) It looks as if street price is around 130-150? Cheaper? Anyone want to make me an offer? Dave ==== > For comparison, in Mathematica (running on a 500MHz Windows2000 machine): In[1]:= mat = N[Table[Random[Integer,{-9,9}], {i,16}, {j,16}]]; In[2]:= Timing[Inverse[mat]][[1]] Out[2]= 0. Second In[3]:= mat = N[Table[Random[Integer,{-9,9}], {i,64}, {j,64}]]; In[4]:= Timing[Inverse[mat]][[1]] Out[4]= 0. Second In[5]:= mat = N[Table[Random[Integer,{-9,9}], {i,256}, {j,256}]]; In[6]:= Timing[Inverse[mat]][[1]] Out[6]= 0.181 Second In[7]:= mat = N[Table[Random[Integer,{-9,9}], {i,1000}, {j,1000}]]; In[8]:= Timing[Inverse[mat]][[1]] Out[8]= 6.89 Second Do you know what kind of algorithm is used? These timings > are very good. I would guess modular algorithms... Doesn't seem like it... LUDecomposition, Inverse, RowReduce and Det use Gaussian elimination with partial pivoting. Of course, it also depends on the internal arithmetic implementation to some extent. ==== >Do you know what kind of algorithm is used? These timings >are very good. I would guess modular algorithms... > Doesn't seem like it... LUDecomposition, Inverse, RowReduce and Det use Gaussian elimination > with partial pivoting. Of course, it also depends on the internal arithmetic implementation > to some extent. Gauss is O(N^3) assuming you have constant size coefficients which is not the case here. Even if you assume that the best algorithms are used for arithmetic, the size of a multiplication of p bits time p bits is O(p ln(p)) using FFT and here the size of the coeff increase linearly (p=cst*N), we should expect O(N^4*ln(N)) timings, you give timings 6.9 s for N=1000 and 0.181s for N=256 which correspond to less than O(N^3). Therefore there must be some other algorithm involved (but which?) or there is a misunderstanding on the initial problem which was to compute all coeffs of the exact inverse of a matrix with random integer coefficients in a range (-9..9 on calcs, I used -99.99 on xcas) (note that I don't understand mathematica weierd notation) ==== > Gauss is O(N^3) assuming you have constant size coefficients which > is not the case here. Even if you assume that the best algorithms > are used for arithmetic, the size of a multiplication of p bits time > p bits is O(p ln(p)) using FFT and here the size of the coeff increase > linearly (p=cst*N), we should expect O(N^4*ln(N)) timings, you give > timings 6.9 s for N=1000 and 0.181s for N=256 which correspond > to less than O(N^3). Therefore there must be some other algorithm > involved (but which?) This is just what I got from the implementation notes section of the help browser: http://documents.wolfram.com/v4/index253.html > or there is a misunderstanding on the > initial problem which was to compute all coeffs of the exact inverse > of a matrix with random integer coefficients in a range > (-9..9 on calcs, I used -99.99 on xcas) > (note that I don't understand mathematica weierd notation) I used approximate random integer coefficients in the range -9...9. That's what mat = N[Table[Random[Integer,{-9,9}], {i,n}, {j,n}]]; computes. I used Timing[Inverse[mat]][[1]] since I was only interested in the timing, not the actual result. ==== I used approximate random integer coefficients in the range -9...9. > That's what > mat = N[Table[Random[Integer,{-9,9}], {i,n}, {j,n}]]; > computes. I used Timing[Inverse[mat]][[1]] since I was only interested > in the timing, not the actual result. Then I understand much better mma timings. We all used exact random integers which is much slower, I guess you can not get the inverse of a 1000x1000 matrix with exact coeffs. ==== I'm trying to do trig substition in integration and am trying to work the example on page 35 of Urroz's volume 2. Where you have the integral x/sqroot(1-x^2) Lower limit 0 Upper limit2 I follow the directions exactly and yet don't get the same answer? The directions are: Type the integral onto the stack, put u=1-x^2 onto the stack then put u onto the stack click on Alg then solve and it is supposed to give you {x=-sqroot(-(u-1)) x=sqroot(-(u-1))} I get u=-(x^2-1)?? What is wrong? ce ==== c_elber schrieb im Newsbeitrag > I'm trying to do trig substition in integration and am trying to work the > example on page 35 of Urroz's volume 2. Unfortunately I don't have the book. Couldn't find it in any bookstore yet;-(. > Where you have the integral x/sqroot(1-x^2) Lower limit 0 Upper limit2 I follow the directions exactly and yet don't get the same answer? The > directions are: > Type the integral onto the stack, put u=1-x^2 onto the stack then put u onto > the stack click on Alg then solve and it is supposed to give you > {x=-sqroot(-(u-1)) x=sqroot(-(u-1))} I get u=-(x^2-1)?? What is wrong? Are you sure you doing the example right? If you put u=1-x^2 on the stack and solve for u you will get of course u=-(x^2-1). If you want to do the integral (with the limits) on your calc do the following: 1) put the lower limit on the stack 2) put the upper limit on the stack 3) put the integral on the stack 4) put the integral variable on the stack 5) use the integrate sign to do the integral 0 2 'x/sqrt(1-x^2)' 'x' [R-SHIFT]-[TAN] The calc will ask you to change to complex mode btw. you should get 1-i*sqrt(3) If you want to do the integral symbolicaly: 1) put the integral on the stack 2) put the integral variable on the stack (if x is the int. var. you don't have to do this) 3) use 'risch' so get the solution (or INTVX if x is the int. var.) 'x/sqrt(1-x^2)' 'x' RISCH or 'x/sqrt(1-x^2)' INTVX and you should get -sqrt(-(x^2-1)) Again, I don't have the book from Urroz. And I didn't found an errata list on Urroz Website. So chances are big I'm missing here something completely. But at least you should now be able to integrate properly. BTW for some of the task above the equationwriter EQW is the proper tool to use. Roman > ce ==== I know how to integrate and use Risch for symbolic integration. I was trying to use trig substitution to solve it step by step. Unfortunately the Urroz book that shows how to do this appears to be wrong. On page 35 of volume 2 he says Suppose that you want to calculate the integral x/sqroot(1-x^2) lower limit 0, upper limit 2 Let's type the integral in the equation writer (then he gives that key sequence). We suggest using the change of variable u=1-X^2. We need find out how to replace x in terms of u, so enter the expression 'u=1-x^2' in the stack (key sequence again). and isolate x by using right shift ' alpha left shift u right shift alg solve The result is the list {'x=-sqroot(-(u-1))' 'x=sqroot-(u-1)'} Press right shift eval right arrow del to keep only the result. Next, press right shift alg subst to replace the latter result in the integral but I can't get to the correct list. The Urroz books are only sold online and at some very specialized stores to the best of my knowledge. To get them you have to order them through Booksurge.com or greatunpublished.com. I highly recommend booksurge they were GREAT! Carmen ==== c_elber schrieb im Newsbeitrag > I know how to integrate and use Risch for symbolic integration. I was trying > to use trig substitution to solve it step by step. Unfortunately the Urroz > book that shows how to do this appears to be wrong. On page 35 of volume 2 he says > Suppose that you want to calculate the integral > x/sqroot(1-x^2) lower limit 0, upper limit 2 Let's type the integral in the equation writer (then he gives that key > sequence). We suggest using the change of variable u=1-X^2. We need find out how to > replace x in terms of u, so enter the expression 'u=1-x^2' in the stack (key > sequence again). and isolate x by using right shift ' alpha left shift u right shift alg > solve OK. You want to solve for x in the expression 'u=1-x^2'. Right? Well my HP49G (with the rom version 1.19-6) seems to fail in doing so. The result should obviously be { 'x=sqrt(1-u)', 'x=-sqrt(1-u)'}. You can confirm this by doing by hand. I think this is a bug in the CAS. One that wasn't there in earlier rom versions probably. BTW what rom version are you using? Roman > The result is the list > {'x=-sqroot(-(u-1))' 'x=sqroot-(u-1)'} Press right shift eval right arrow del to keep only the result. Next, press > right shift alg subst to replace the latter result in the integral but I > can't get to the correct list. The Urroz books are only sold online and at some very specialized stores to > the best of my knowledge. To get them you have to order them through > Booksurge.com or greatunpublished.com. I highly recommend booksurge they > were GREAT! > Carmen ==== > OK. You want to solve for x in the expression 'u=1-x^2'. Right? Well my HP49G (with the rom version 1.19-6) seems to fail in doing so. > The result should obviously be { 'x=sqrt(1-u)', 'x=-sqrt(1-u)'}. You can > confirm this by doing by hand. I think this is a bug in the CAS. One that wasn't there in earlier rom > versions probably. > BTW what rom version are you using? Roman > Roman; I am using 1.19-6. Carmen ==== i was working with matrices, to solve linear system, and everything was o.k. , but then somehow the 49g started to bring strange results why? i had to reseet the system without Memory recovery now it is back to it selft,... why is this happening? im using rom 19-6!.... ==== Does anyone have a manual for the HP71 41 translator that they would sell, either the original or a photocopy? Can anyone post how to use the module to make the HP71 function as an HP41 calculator? Martin Eisenstein martin@eisenstein.com ==== > Does anyone have a manual for the HP71 41 translator that they would > sell, either the original or a photocopy? manual. When you get it, you can reimburse me for the postage (the photocopy is free). ==== in a post above someone (c_e) was trying to solve an example of G. Urroz Book. example: 'u=1-X^2' SOLVEX (The example is a bit different btw, but the problem lies here) Answer should be {'X=sqrt(1-u)','X=-sqrt(1-u)'} But HP49G gives { } Looks like a bug to me. The 49 should be able to solve this symbolicaly. Doesn't it? Can someone else confirm this behaviour and try it with some other (older) rom version. BTW my rom version is 1.19-6. Roman ==== Try to be complex mode on... > in a post above someone (c_e) was trying to solve an example of G. Urroz > Book. example: > 'u=1-X^2' > SOLVEX (The example is a bit different btw, but the problem lies here) Answer should be {'X=sqrt(1-u)','X=-sqrt(1-u)'} > But HP49G gives { } Looks like a bug to me. The 49 should be able to solve this symbolicaly. > Doesn't it? > Can someone else confirm this behaviour and try it with some other (older) > rom version. BTW my rom version is 1.19-6. Roman ==== Just tried it with rom 1.18 and 1.19-5 in the emulator. 1.19-5 doesnt solve the expr., gives the same wrong result as 1.19-6: { } 1.18 gives: {' X=sqrt(-(u-1))', 'X=-sqrt(-(u-1))'} Arrgh. 1.18 gives the right answer while 1.19-6 doesn't. So it's probably really a bug in the CAS. What about a new rom 1.19-7 (or even 1.2) to christmas? Roman ==== Roman Hartmann escribi.97 en el mensaje > Just tried it with rom 1.18 and 1.19-5 in the emulator. 1.19-5 doesnt solve the expr., gives the same wrong result as 1.19-6: { } > 1.18 gives: {' X=sqrt(-(u-1))', 'X=-sqrt(-(u-1))'} Erable 3.2 also gives { }, but in complex mode it gives the solutions. Have you tried this way? ==== ...and, as X appears only once in the equation, then you can use the old ISOL for isolating it. ==== Is AUR available for free download somewhere? (Like 49G's one, for example?) I haven't succeded to find it on hpcalc.org.. :( Computers are not intelligent. They only think they are. ==== Here's an interesting problem I had last night: The formula for the input impedance of a transmission line is: Zin(l)=Zo*(Zl+i*Zo*tan(b*l))/(Zo+i*Zl*tan(b*l)) where l is the line length, Zo is the characteristic impedance (real), Zl is the load impedance (complex), and b is a real constant. I defined this as a function, actually, with b*l as the argument of the function, so it is zin(bl). With Zo=50 and Zl=200-i100, nSolve(imag(zin(2pi*x))=0,x)|x>0 and x<.25 fails to give a correct result. Solve also fails, yielding true. But when I do it in two pieces: imag(zin(2pi*x)) then nSolve(ans(1)=0, x)|x>0 and x<.25 yields the correct value of 0.23349... The function can be re-written in terms of complex exponentials, to avoid the singularities when bl=pi/2 and so on, but the TI still can't solve it unless I first evaluate the imaginary component and pass it to Solve. Comments appreciated. Good day! ____________________________________ Christopher R. Carlen Principal Laser/Optical Technologist Sandia National Laboratories CA USA crcarle@sandia.gov ==== > Zin(l)=Zo*(Zl+i*Zo*tan(b*l))/(Zo+i*Zl*tan(b*l)) [...] > I defined this as a function, actually, with b*l as the argument of the > function, so it is zin(bl). So we have 'Zin(bl)=Zo*(Zl+i*Zo*tan(bl))/(Zo+i*Zl*tan(bl))', where i is the complex number 'SQRT(-1)'. > With Zo=50 and Zl=200-i100, > nSolve(imag(zin(2pi*x))=0,x)|x>0 and x<.25 > fails to give a correct result. Yes, it yields 1.E-38. > The function can be re-written in terms of complex exponentials, to > avoid the singularities when bl=pi/2 and so on, but the TI still can't > solve it unless I first evaluate the imaginary component and pass it to > Solve. Well, since the HP49G finds 100 exact solutions between 0 and 25 in radians mode, I assume you mean this to be solved in degrees mode. The HP49G can solve this equation symbolically - interesting enough the TI89 can't solve this exact, but only find some numeric solutions. This is one of the first times I've seen the HP solver beat the TI counterpart - interesting. To return to your question, this type of problem is solved like this in RPN mode: 'Zin(bl)=Zo*(Zl+i*Zo*tan(bl))/(Zo+i*Zl*tan(bl))' DEFINE (or DEF, if You prefer) 50 'Zo' STO '200-i*100' 'Zl' STO 'X>0' ASSUME DROP 'X<25*pi/180' (to be able to solve the equation in RAD mode, which is the only mode the HP49G can use SOLVE in) ASSUME DROP '2*pi*X' Zin IM 'X' SOLVE -> 'X=ATAN((19+SQRT(377))/4)/(2*pi)' (numeric mode) EVAL -> 'X=0.233487974945' If you, on the other hand, would like to solve it with one algebraic expression, you can enter this: Preparation, as on the TI89: 'Zin(bl)=Zo*(Zl+i*Zo*tan(bl))/(Zo+i*Zl*tan(bl))' DEFINE (or DEF, if You prefer) 50 'Zo' STO '200-i*100' 'Zl' STO { X>0' 'X<25*pi/180'} ASSUME ÇSOLVE(IM(Zin(2*pi*X)),X)Ç -> 'X=ATAN((19+SQRT(377))/4)/(2*pi)' ==== >Zin(l)=Zo*(Zl+i*Zo*tan(b*l))/(Zo+i*Zl*tan(b*l)) [...] > >I defined this as a function, actually, with b*l as the argument of the >function, so it is zin(bl). > So we have 'Zin(bl)=Zo*(Zl+i*Zo*tan(bl))/(Zo+i*Zl*tan(bl))', where i is the > complex number 'SQRT(-1)'. >With Zo=50 and Zl=200-i100, >nSolve(imag(zin(2pi*x))=0,x)|x>0 and x<.25 >fails to give a correct result. Note, x < 0.25, not 25. ____________________________________ Christopher R. Carlen Principal Laser/Optical Technologist Sandia National Laboratories CA USA crcarle@sandia.gov ==== > Note, x < 0.25, not 25. Yes, sorry. Same procedure as before - the HP49G solves it fine. ==== I get the message Invalid Card Data after I reset my HP49G. I just got it when I updated to ROM 1.19-6b. Do I have to worry here? ==== PINIT I get the message Invalid Card Data after I reset my HP49G. I just got > it when I updated to ROM 1.19-6b. > Do I have to worry here? > ==== Hallo. I'd like to know of there's a possibility to transmit Datas from a Hp49G to a PC. If it's possible which PC-programm can I use? Greetings, Ingo ==== >Hallo. I'd like to know of there's a possibility to transmit Datas from a >Hp49G to a PC. If it's possible which PC-programm can I use? Isn't there a tool on the HP web site? A bientot Paul Paul Floyd http://paulf.free.fr (for what it's worth) What happens if you have lead in your pants as well as lead in your pencil? ==== I'm sure It's possible to see my function as a graph but I don't know how? Anyone with a hint? greetings, ingo ==== I'm running the MetaKernal 2.30 on a 48GX and wanted to know if System Font7 exists for the 48GX. It is on my 49G and I wanted to get that font for my Doug ==== You can do the following on your HP49 (or in Emu48): FONT7 ->S2, then copy this file to your HP48 with MK installed and put it on stack, doing ASM, it will return FONT7 from HP49... Paulo Pinheiro P.S. I think this works too with FONT7 ->H in HP49 and then with this object in HP48 do H-> but didn't try it, the upper way is good. > I'm running the MetaKernal 2.30 on a 48GX and wanted to know if System Font7 > exists for the 48GX. It is on my 49G and I wanted to get that font for my Doug ==== Douglas Rohm escribi.97 en el mensaje > I'm running the MetaKernal 2.30 on a 48GX and wanted to know if System Font7 > exists for the 48GX. It is on my 49G and I wanted to get that font for my Doug This size is the one I ever use (almost). In the MK menu, you can see a hole between FONT8 and FONT6 because there is no room for it in the 128kb cards. But you can get fonts of several sizes in hpcalc and install them in memory. (The FONT7 is set for my STARTUP program) ==== you could also try RayFnt7, which I created for the 49G because the built-in system font 7 is hardly readable. On www.hpcalc.org, of course;-) Raymond R Lion schrieb im Newsbeitrag Douglas Rohm escribi.97 en el mensaje > I'm running the MetaKernal 2.30 on a 48GX and wanted to know if System > Font7 > exists for the 48GX. It is on my 49G and I wanted to get that font for my > > Doug This size is the one I ever use (almost). > In the MK menu, you can see a hole between FONT8 and FONT6 because there > is no room for it in the 128kb cards. But you can get fonts of several sizes > in hpcalc and install them in memory. (The FONT7 is set for my STARTUP > program) > ==== Raymond Hellstern escribi.97 en el mensaje you could also try RayFnt7, I edited most of the characters because that, but be sure I'll give a chance to your font ;-) ==== I just tried to remove the hp49g demo from my calculator, by following the instructions from hpcalc.org, but I can't remove it! I do as follows: 1) Type :2:1234 2) hit ENTER 3) type DETACH 4) hit ENTER 5) Type PURGE and then I get 2 few arguments, cause when I git enter after writing DETACH there's nothing on the stach. But if I go into port :2, then I still see 1234. How can I remove it completly? ==== I use the Filer to remove any unwanted libs I just tried to remove the hp49g demo from my calculator, by following > the instructions from hpcalc.org, but I can't remove it! I do as follows: 1) > Type > :2:1234 > 2) > hit > ENTER > 3) > type > DETACH > 4) > hit > ENTER > 5) > Type > PURGE and then I get 2 few arguments, cause when I git enter after writing > DETACH there's nothing on the stach. But if I go into port :2, then I > still see 1234. How can I remove it completly? > ==== Ever thought about what argument PURGE would need? Raymond Misfeldt schrieb im Newsbeitrag I just tried to remove the hp49g demo from my calculator, by following > the instructions from hpcalc.org, but I can't remove it! I do as follows: 1) > Type > :2:1234 > 2) > hit > ENTER > 3) > type > DETACH > 4) > hit > ENTER > 5) > Type > PURGE and then I get 2 few arguments, cause when I git enter after writing > DETACH there's nothing on the stach. But if I go into port :2, then I > still see 1234. How can I remove it completly? > ==== Here is: (AUR 48G series) http://www.hp.com/cposupport/manindex/hp48gcalcu20676_sp_man.html Hm. It seems that there is no AUR there only UR and QuickStart. And only in Spanish and Portugese.. ==== simply use http://www.holyjoe.org/cable.htm ;-) >I used to have an address for Joe Horn's list of cables but either I've >recorded it incorrectly or it has changed. Can someone give me the >correct address? ==== My 49G keys are perfect after three years of abusive use. Or should we say two years and one years because of the usage patterns PS: Painted afterwards indeed. My 5MHz 49G has a red [ON] blue [RS] green [LS] and a gray [ALPHA] When I get my hands on a digicamera, I'll send a picture to you to be put to your web-page. > > simply use http://www.holyjoe.org/cable.htm ;-) > You are actually correct: it *should* be holyjoe.net, but > I lost control of that domain when my hosting company (who > resgistered it for me) went out of business. I'm currently > trying to wrestle control of it back from GoDaddy.com who > has it on their WHOIS list as registered to ME with MY > complete address... but I'm having trouble convincing them > that I am me. (I am I?) (Don Quixote?) Meanwhile, please use the HolyJoe.ORG alternative, which > works just fine. In case you haven't seen it, PLEASE check out the Crummy > Rubber Keys page at http://holyjoe.org/HP49.htm#crummy > But I digress. -Joe- > joehorn@jps.net ==== Cann't seem to get limit and derivative to work. I've tried doing the equations in the advanced users guide DERIV(2*X^2*Y+3*Y^2*Z+Z*X, [X,Y,Z]), even tried some from the users guide but none work. I get Invalid Syntax. - Jamie ==== try DERIV(2*X^2*Y+3*Y^2*Z+Z*X, {X,Y,Z} ) { } instead of [ ] Greetings Bernd Jamie Bohr schrieb im Newsbeitrag > Cann't seem to get limit and derivative to work. I've tried doing the > equations in the advanced users guide DERIV(2*X^2*Y+3*Y^2*Z+Z*X, [X,Y,Z]), > even tried some from the users guide but none work. I get Invalid Syntax. > - Jamie ==== But they both work for me when I use the RPN-stack ??? try > DERIV(2*X^2*Y+3*Y^2*Z+Z*X, {X,Y,Z} ) { } instead of [ ] Greetings > Bernd Jamie Bohr schrieb im Newsbeitrag > Cann't seem to get limit and derivative to work. I've tried doing the > equations in the advanced users guide DERIV(2*X^2*Y+3*Y^2*Z+Z*X, [X,Y,Z]), > even tried some from the users guide but none work. I get Invalid > Syntax. > > - Jamie ==== What for are the 31 and 32 pins in HP48 Card Slot 1? They are connected to the same signals as A17 and A18 of ROM, but Slot 1 can allegedly contain only 128kiB memory. That is, it uses only A0-A16. Best wishes, Robert Tiismus ==== > What for are the #31 and #32 pins in HP48 Card Slot 1? [same in S/G] > They are connected to the same signals as A17 and A18 of ROM, > but Slot 1 can allegedly contain only 128kiB memory. > That is, it uses only A0-A16 Where's Dave Arnett these days? http://groups.google.com/groups?selm=32A62282.1B3A%40cv.hp.com http://groups.google.com/groups?selm=533jt0%24927%40hpcvsnz.cv.hp.com http://groups.google.com/groups?selm=3640993D.43C1%40hp.com http://groups.google.com/groups?selm=DLE03L.4Eq%40hpcvra.cv.hp.com Dave is also quoted some more below (tangentially relevant to your Q) http://groups.google.com/groups?selm=3C0EE5BE.25C17264%40miu.edu -[]- . ==== John H Meyers :: >What for are the #31 and #32 pins in HP48 Card Slot 1? [same in S/G] >They are connected to the same signals as A17 and A18 of ROM, >but Slot 1 can allegedly contain only 128kiB memory. >That is, it uses only A0-A16 > Where's Dave Arnett these days? http://groups.google.com/groups?selm=32A62282.1B3A%40cv.hp.com http://groups.google.com/groups?selm=533jt0%24927%40hpcvsnz.cv.hp.com http://groups.google.com/groups?selm=3640993D.43C1%40hp.com http://groups.google.com/groups?selm=DLE03L.4Eq%40hpcvra.cv.hp.com Dave is also quoted some more below (tangentially relevant to your Q) http://groups.google.com/groups?selm=3C0EE5BE.25C17264%40miu.edu > more. It's content is not as interesting as couple of years ago :( To be honest, I found almost the same information from google and hpcalc.org as you. But the question remains: what for are the contacts #31 and #32 on the card slot 1 of HP48G? I think that they are not used to drive overhead LCD and it is clear that HP48 OS does not allow to use them for RAM addressing. They are connected to YORKE, but are just useless? Robert Tiismus ==== > To be honest, I found almost the same information from google and > hpcalc.org as you. But the question remains: what for are the contacts > #31 and #32 on the card slot 1 of HP48G? I think that they are not used > to drive overhead LCD and it is clear that HP48 OS does not allow to use > them for RAM addressing. They are connected to YORKE, but are just useless? Those pins are the yorke A17 and NA18, the same that go to the similarly(sp?) named pins on the internal Ram. They are NOT the same as in port 2. There was once a post that said something about how those pins could be used, i think it was something like replacing the internal rom, with some special card. There is a lot more info on the hp hardware, search hpcalc for hardware, browse the misc folder, and while you're there get the schematic... Steve ==== >Those pins are the yorke A17 and NA18, the same that go to the >similarly(sp?) named pins on the internal Ram. They are NOT the same >as in port 2. There was once a post that said something about how >those pins could be used, i think it was something like replacing the >internal rom, with some special card. Could it be this one? : http://groups.google.com/groups?selm=53gpp4%24i7l%40hpcvsnz.cv.hp.com ...Another interesting post by Dave Arnett : http://groups.google.com/groups?selm=529qv8%24f03%40hpcvsnz.cv.hp.com Also, I think this 2 year old post by you hits the nail on the head ;) : http://groups.google.com/groups?selm=8jefsl%2494%241%40duke.telepac.pt \ - Jonathan Busby - before replying. ==== > Also, I think this 2 year old post by you hits the nail on the head ;) > : > http://groups.google.com/groups?selm=8jefsl%2494%241%40duke.telepac.pt I used to know about this stuff huh? ;-) I just searched and guess what? the closest post to what i was talking about is by you: http://groups.google.com/groups?selm=8jbgut8aafna0qprdhnh5jqtkg59aic5mb%404a\ x.com I still think that there was some card could use those lines, and take over the rom, or at least part of it, however i couldn't find it. Where's master Dave when we need him? What about Cyrille? He might know if there was provision for such a card... Greetings Steve Sousa ==== This is just a guess, but if I remember right there are a couple of slot 1 pins that are wired for the 38g (?). Presumably, the same or a slightly modified PCB was used for the 38 (?) and 48. Robert ==== I get Error: Undefined Name when doing a dervx(x^2). The emumlator on my PC returns the right value but the calculator does not. I need this to work. It also looks bad when a TI89 can do it and a HP49G can not. - Jamie ==== Looks like you hit the nail on the head, it something to do with CAS. I think clearing flag 99 and 100 did it. I had to do a flag by flag comparison to the 49G on my PC. Jamie -Original Message- What mode is your HP49 in? What ROM version are you running? What is the variable stored in 'VX'. Better yet, what are you flag settings. All of these things must be considered before you can say it isn't working. Many of the CAS commands don't work the way they should in ALG mode. Get OUT of ALG mode into RPN mode. Then try the same examples only using RPN. best wishes, J.C. Ron ==== I was flags 3 and 105 that seem to be causing the problem. Some how flog 105 gets set to approx. instead of exact. Jamie Looks like you hit the nail on the head, it something to do with CAS. I > think clearing flag 99 and 100 did it. I had to do a flag by flag comparison > to the 49G on my PC. Jamie -Original Message- What mode is your HP49 in? What ROM version are you running? What is the > variable stored in 'VX'. Better yet, what are you flag settings. All of > these things must be considered before you can say it isn't working. > Many of the CAS commands don't work the way they should in ALG mode. Get OUT > of ALG mode into RPN mode. Then try the same examples only using RPN. > best wishes, > J.C. Ron ==== > I get Error: Undefined Name when doing a dervx(x^2). The emumlator on my > PC returns the right value but the calculator does not. I need this to > work. It also looks bad when a TI89 can do it and a HP49G can not. - Jamie Your default variable is probably 'X', rather than 'x', so that 'DERVX(x^2)', which takes derivatives with respect to the default variable, does not find an 'X' in your formula to work with. Try 'DERVX(X^2)', using capitals throughout. If that fails try holding ON and pressing the F3 key to reboot before trying again. ==== Jamie Bohr escribi.97 en el mensaje > I get Error: Undefined Name when doing a dervx(x^2). Are you writing it with capital letters, DERVX? ==== Yes, I use the built in function name off the Calc/Deriv & Integ menu. I use the same steps on the PC version of the 49G and get the right answer. I have rebooted the calc. twice and reloaded the bios. So far I am at a loss as to why it does this. Jamie Jamie Bohr escribi.97 en el mensaje > I get Error: Undefined Name when doing a dervx(x^2). Are you writing it with capital letters, DERVX? > ==== DERVX(X^2) => X*2 ???? What is your problem? VERSION gives: Revision #1.19-6 1: Copyright HP 2001 RCLF gives 1: { # 60A00B8285054550h # 0h # 10305C280580E8h # 0h } Veli-Pekka - shaken & stirred > I get Error: Undefined Name when doing a dervx(x^2). The emumlator on my > PC returns the right value but the calculator does not. I need this to > work. It also looks bad when a TI89 can do it and a HP49G can not. ==== Agreed, however my calculator returns Error: Undefined Name. I wanted to show that it, I, had a problem with even the simplest of derivatives. > DERVX(X^2) => X*2 > ???? > What is your problem? VERSION gives: > Revision #1.19-6 > 1: Copyright HP 2001 RCLF gives > 1: { # 60A00B8285054550h # 0h > # 10305C280580E8h # 0h } Veli-Pekka - shaken & stirred > I get Error: Undefined Name when doing a dervx(x^2). The emumlator on > my > PC returns the right value but the calculator does not. I need this to > work. It also looks bad when a TI89 can do it and a HP49G can not. > ====