A17 It's remotely possible that this function (view PC directory remotely) could have been omitted during OS rewrites, just as was serial flow control -- or perhaps the lack of flow control is why this doesn't work now (if the generated listing is large). ==== Well, it's not completely omitted, as MS-DOS Kermit does show an error of Unknown server command and the 49G errors out with Error: Transfer Failed, with ROM 1.19-6. So something is getting through, but not anything that makes sense to the MS-DOS Kermit server. With ROM 1.18, MS-DOS Kermit shows an error of Unexpected Parity from host! Changing Parity to MARK (the 49G clearly shows None in the Parity field) and the 49G enventually times out. I didn't bother to try different parity settings. Did they fix one bug and ignore another? Or did they fix one bug and create another? D G PKT works in all cases, so I suppose that a user could make his own application if he thought it was worth the bother. I doubt it; first, flow control shouldn't be needed with Kermit (at least not as implemented in these calculators), and second, it works fine using a 48GX with flow control disabled on both the calculator and MS-DOS Kermit. These seem to be separate bugs. -- I thank you, John, for contributing even with an...assumption. I was afraid that you would say something like that. It seems to me like a 'software deficiency'. Now I do have to enhance my UserRPL code with check fields for selecting remote PC files to mess with. I guess I can live with that small 'inconvenience'...in my wonder machine. ==== Appropriately enough considering the date, I've just been told about a new (to me) easter egg on the 40G by a user, Norbert de Coninck. You probably already know about RULES and AMIGO which give the usual crosswords containing the development team. To produce this new one you enter the CAS environment and type MINEISBETTER. The result is a simple version of Tetris! Naughty, naughty, (and congratulations) Jean-Yves! I remember you threatening/promising to build in some games but I didn't know you'd actually done it. What else did you put in there? :-) PS. If you don't have a 40G, it also works on the emulator. ==== In the ROM you also have Xennon, Arkanoid et Skwik. But you need a special aplet to activate them, that's why my game aplet is so small. You have over 80KB of games in the HP40G ==== Yes the 48 uses reads because of the fact that the bank switcher memory controller on the 48GX is the same as the port1 memory controller on the SX. This means that a write could be rejected by the hardware if the card in slot 1 is write protected. I've browsed through the bank switching sections of the 49 ROM and all I could find were *writes* to the BS so I take it this is the convention. If the OS strays from this then my method would not work. Actually, the Yorke has pins dedicated to the *external* Saturn bus. When DA19 is set port2 is disabled and all bus activity in its address range is mapped to the external Saturn bus. Well, if that's the case, it's a waste of the IRI pin. :) On the other hand, if the capability to handle IR in the interrupt system exists and is just dormant then that makes it a lot easier to add IR on the software side. Anyway, the ACO was very mindful to remove anything on the 49 that was taking up code space and was unneeded/unused so they could pack the core of the OS into 128K. It would seem inconsistent with this policy if the IR handling in the interrupt system was not removed - Maybe a new 49 with IR was planned but was killed by HP for no good reason as so many other promising projects have been. Oops. I forgot about this. Here's an easy fix. The buffers becomes transistors : [Where LED is usually connected to ;)] _|_ (1) | I | +----o| | | |_O_| | | | LED -----+ | [Old HP48 IR transmit circuit] | _|_ (2) | | I | +-----| | |_O_| | LED I : Transistor input. O : Transistor output. (1) Active low transistor (eg. PNP) (2) Active high transistor (eg. NPN) Input and output may have different meanings depending on which transistor family you're using. I guess it acts like the BEN line on the 48 then? Software write protection. In either case it doesn't change the circuit. I should have indicated that by odd address I mean odd *byte* address. Accesses to the BS are usually on an even address anyway. Bit 1 controls the IR mode. Hmmmm... I don't know what you mean here. Bank selection is always in the form XXXXXX0 . In either case the functioning of the circuit only rides on the assumption that a *read* is never performed on the BS by the OS. ==== Well, writing has 2 advantages: 1: you do not waste a register by putting data in it. 2: doing a read does things slightly differently due to the yorke caching mechanisms. Yes, it is a waste... There is no IR handeling needed in the Interupt system. Remember, if you set the Yorke in IR mode, IR is handled exactly like RS232... ==== I didn't know you had that part worked out, sorry. In that case, yes, your circuit is ok. I knew about the pins but not about the activity, Thanks! I was taking about addresses on the programmers side of view, i knew what you meant ;-) You're taking about the 49 (whose soft. you analized) I was talking about my experience on the 48, which could be present on the 49 too. ==== Yes, you're right. I did some looking and on the 48 the it seems only reason the OS is checking for IR interrupts is to disable them so as to prevent a continuous interrupt loop. I guess it was smart not to have disabled this protection in the 49. ;) There's the explanation for the 49 reading the LCR/IRC registers. ---------------------------------------------------------------------------- Writing to the bs is indeed a better behaviour. I'm glad this was addressed on both the hardware and software sides. Then why is there (according to Jonathan) monitoring of the IR input on the interrupt system? Unless there is a conection between IRin and some other pin... The pcb i reversed was F1633-80401 and there was no conection to the IRin , is it much different from current production models? TIA I did it 2 years ago, using: 2 pieces of stiff wire 4 white small LEDs 1 resistor (something small, like 200 Ohms) small press-and-hold switch flexible wire Take off the plexiglass. Open the battery door and cut small openings for the stiff wire, which brings battery power through the case to the empty space over the serial connector. Put the resistor also in the battery compartment. With knife and/or soldering iron, dig out holes in the plastic around the LCD for the LEDs and connecting wires. I connected them in series. My switch fitted in the lower left corner of the display cover, so it was protected by the slide-on cover from accidentally being pressed. The plexiglass should fit again and secure the whole thing. However, the display in this side-lit configuration proved being hard to see. Maybe with 8 LEDs (4 top row, 4 bottom row) it would be better. Of course, the keyboard is not illuminated anyway. It was enough for seeing and rechecking output from Urania while sitting at my telescope, but will not replace a real flashlight. Anyway, this gem was stolen from me last November. :'-( Go perhaps you have stores some values or other objects in X or Y. Do { X Y } PURGE first, then retry. ==== This is of course not a continuous function, and also not defined at the exact range boundaries, which is not ideal for tax bracket computations :) But you specified it that way, so in this case: 'F(X)=IFTE(X>2E5,.36*X,IFTE(X>12E4,.35*X, IFTE(X>8E4,.29*X,IFTE(X>2E4,.18*X,0))))' DEFINE Then F(90000.) etc. [in Algebraic mode] delivers the answers! Well, finally a use for *algebraic* mode ;-) Doesn't nice HP still have a nice downloadable manual? Hurry up, before it turns into a nice Compaq manual :) Someone else mentioned INPUT, which works well, but you could do: Key in a value and then press CONT. PROMPT And then press CONT (the LeftShifted ON key). There's no need to press the ENTER key; just the CONT key. Pivo's CASE structure seems most straightforward to me, but note that you didn't specify what to do if the input was equal to one of these values. Using Pivo's program, it will be treated the same as if it were less than the value. If you prefer that it be treated the same as if it were greater than the value, then use Greater Than or Equal functions in place of the Greater Than functions. You didn't mention which calculator, but I'll guess the 49G. I'm disappointed to find that the URL that used to take me to hp.com's 49G User's Guide download site now redirects me to somewhere else. Maybe they were counting on hpcalc.org and other no-cost (to HP) resources providing the support for this calculator. I suppose that you could try complaining at http://productfinder.support.hp.com/tps/ContactHp?h_product=hp49ggraph24252. If you're really in a hurry, I could e-mail you the guides as attachments. The sizes of the .zip files are: Pocket Guide: 574KB User's Guide: 1884KB Advanced User's Guide: 3258KB ==== Yes, I'd be interested to know what your port settings etc. are. My Win2K installation shows no port problems at all, and it works fine talking to my external serial modem (not often used unless my DSL is down), but it looks to me like the HP installer is not able to pick up the COM port installation for some reason - witness the fact it looks for 'COM 0'. I tried it on my Win2K laptop at work and it fails in exactly the same way... same 'COM 0' issue. This is driving me crazy as I want to archive my store of programs on the calculator! :) ==== Actually the number of the COM port in PCI-modem use isn't very important. I use COM3 when using a modem and I'm quite sure I only have COM1&2 as hardware ports. You could though check that the interrupts and memory addresses for the com ports are free. Otherwise you have to change them in the BIOS. (Mind you, you might want to see what COMs you have active in the BIOS anyway). Also I'm not sure whether the Conn.Kit allows for shared irq's. Again you have to check the BIOS and compare it to the Windows device manager. ==== I had a similar problem.. make sure no other program is using the COM port such as PDA's Software or if you have such a program uninstall it and then try the HP Conn. KIT if it fails, you must check the cable you are using is good (correctly wired). PS - to users of the HP49... just curious, but does the HP49 fix the bug mentioned in the above thread? ( 0^0 = undefined result and not 1 ) Lines: 60 ==== Michael Frey wrote: A B ----- ----- 1 2 2 4 3 6 4 8 5 10 6 12 7 14 8 16 ... ... How many positive integers are there in column A? How many positive integers are there in column B? Since we can match any number in column A with a unique corresponding value in column B, and vice-versa, there must be *equally*many* numbers in each column! On the other hand, it's clear that if we remove from column A all the numbers that are in column B, there will still be infinitely many (and actually *equally*many*) still left! (all the odds on the left and evens on the right). Thus, here is one case where subtracting infinitely many from another infinitely many still leaves infinitely many, rather than none (or zero)! The symbol 'oo' does not represent any fixed number, and conventional arithmetic is defined only over ordinary fixed numbers, all of which must be finite, which infinity is not. Many fallacies can arise from trying to apply an operation to things which are beyond that operation's realm of validity. ==== . 0^0 = ? on the '49, which is correct. 0.^0. = 1. , as it was on the '48, because it is 'convenient' and backward compatible. (convenient, because lim(x->0) f(x)^g(x) = 1. , for f(x) and g(x) in some class of functions that escapes me for the moment) ==== 00 - 00 is indeterminate, as sombody sid above. We can not say the result in general: we need see every case. I'll try to write trivial examples for seeing it: Ex 1: lim (x-x) = lim 0= 0 x->00 x->00 Ex 2: lim (x^2-x) = lim (x^2) because x^2 grows up quicker than x, and then the result is 00 x->00 x->00 Ex 3: lim [(x) - (x-2)] = lim (2) = 2 x->00 x->00 In each particular case you want (these of above and any other more complex), you must transform the problem for avoiding the indeterminate 00 - The same occurs with the other indeterminated: 0/0 , 00/00 , 0^0 , 00^0 , 0*00 , 1^00 ==== I said: Michael Frey replied: Well then, how about this alternative: A B ----- ----- 1 2 2 3 3 4 4 5 5 6 ... ... There is still a one-to-one correspondence, by which we can match any unique integer in column A with another in column B, and vice-versa, but this time, if we remove from column A all the integers that appear in column B, only one single value remains: 1 So this time, the result (counting how many remain after subtracting one infinity from another) is finite but not zero! If the lists we chose for the columns were identical, then the subtraction would produce your first choice: zero! That's why, since you can arrange alternatives to produce any answer at all, the answer is called indeterminate, which is denoted by '?' in the calculator. Once again, infinity is not a definite, fixed number; when thought of in connection with counting, it is merely the potential of never stopping the counting! If one person starts increasing a counter and another person starts decreasing the same counter, and if neither person ever stops, there are ways to arrange this scenario so that the count never varies from zero, or gets to any finite value and then remains at that value indefinitely, or becomes indefinitely more positive, or becomes indefinitely more negative, which leads again to the concept of not being able to give any definite value to what will develop, which is denoted by '?' Couple amusing, not mathematically very correct, examples concerning infinity: Lets say we have infinite sum S: S=1+2+4+8+.... 2*S=2+4+8+16+.... 2*S-S=-1 => S=-1 :) Note: #FF is the biggest number which can be stored in 8 bit register, at the same time it can be interpreted as -1. So we have the infinite number of bits, all set to 1. Is this sequence of bits representing infinity, or is it -1 :) Do not take this 'analysis' too seriously though. Other example: S=1-1+1-1+1-1+.... 1-S=1-1+1-1+1-1+1-1+.... Now (1-S)-S=0 => S=1/2 ==== An interesting FAQ on 0^0: http://www.cs.uu.nl/wais/html/na-dir/sci-math-faq/0to0.html Proof that the universe repeats itself every three years :) Well, actually the start of mathematics regarding quantities, was influenced by things that you can count. perhaps big numbers but not infinities. Old Greeks considered numbers to be existing. They didn't bother to wonder what comes after, say 100000, because the thinking at that time was too busy discovering first, if such things exist. Archimedes wondered how many sand particles are on the beach, and if there is really such a huge number. So it seems that the algorithm for going to infinity was at that time: number+1 does it exist? The idea of infinity came out off finite but big numbers, which are still not the end. ==== The bug list still works. It's at http://bugs.hpcalc.org/. -- CASCFG just resets all flags, so that the HP49G is configured as it comes out of the box. You could also try a warmstart. Sometimes it helps ending unusual behavior of the calculator. ==== If you decompile the internal ZSQRT you will get something like this: :: CODE 001E8 8F5DAE013016414234520008BA518F2D7601C4CF8D95253818F86501AF08F91BE06B40D616480 F08AE11AF0152179F06510156716FAF01521762010C8F40CF4114344556397C903478E72DA808 C05AF8AF7A74A76550B74A74A76550B74A73550B75A78AF0AF22F305A8AB94A0CB04B7859FA78 BF40D0D56EB96A0EB06B734E0B7853FA78471B74B78480A7C5EDA78A7CA73BF6814ACE0D0D5FB AFAAF9A76A77550B76BF7816ACFAFF042001AF2978000594CE3AF8A75A75A702F305B96A0EB06 B7 59FA7ABF60D0D56EA74BF4AFE04200120AF8A755600C0CA755400CA705400C890EA80CF2580F FBF6A4EB46B7A59F0D54F41A ?SEMI CODE 0009D 8FB9760143130164146132130CA1311CD808B0501C0AF015BD1CF1577776E101146818FA5822 819F283240E6E6068FD7B50118135344162014517907818FAFAF005A7C048FF576011115178D6 9BE0 DUP BEGIN SWAPDROP 2DUP FPTR2 ^RDIVext OVER FPTR2 ^QAdd ZINT 2 FPTR2 ^RDIVext DUP3PICK FPTR2 ^ZNLT? NOT_UNTIL DROP DUPDUP FPTR2 ^QMul ROT EQUAL ; The problem of precision is inside of the second CODE... I saw the initial ZSQRT (Based on Alg48v401) and the second code returns a init aproximation for square root... if you compare the results for the same input in this code and the Alg48 code you'll se different numbers... (transforming them to the same type). Well I think that is possible to rebuild it for a best init aprox... The problem could still inside of Newton's sqrt aprox... but I have tested it with the same numbers on both systems, the return was the same..... ==== Comments start with an at-sign, i.e. '@'. All the text from the at-sign to the end of the line is ignored when you download the program into the calculator, i.e. you won't see the comments if you edit the program on the calculator. Switch to approximate mode. Then enter polynomial, enter variable, press SOLVE. ==== Could there be some other cause for that message? What error codes appear in the results of a WSLOG command? The red plastic IR cover normally holds the cards in place, so that they should not shake out from the card slots. If you never remove the cards anyway, how about super glue? [but don't try this at home :] ==== The unfortunate fact is, that both Microsoft and HP have published their very own buggy software that can also crash their respective products (Microsoft much more than HP, however, which we experience rather unendingly here in our IT department), and those manufacturers themselves are, on the whole, *less* reliable than any other software vendor or source that I've used! (Similarly for big-name Symantec, whose corporate edition anti-virus has been royally screwing us up for the past whole year). I have posted many such HP bugs on this forum, going all the way back to the HP34C TVM application bundled with the calc (in a booklet) which had bugs, some of the TEACH examples in the 48G which have bugs, various bugs still within the 49G calculator and operating system itself, and apparently some problems even in the PC link program which can be downloaded from HP, but which is not authored by HP, just like many of the TI programs. There are people who can design and program better and some worse, even within the manufacturer's own organizations; downloading software from a manufacturer site just doesn't guarantee anything at all, downloading from a non-manufacturer site doesn't indicate any lack of quality at all, and any fuzzy feeling generated solely by the manufacturer listing the third-party wares on its own site is quite illusory. It's usually people who know less and who can't evaluate for themselves who rely on this kind of false assurance, unfortunately, and that group includes many educators and their students. By the way, I have posted on this group about TI calculators whose basic algorithm for floating multiplication was incorrect, and Casios which deliberately change results to look better, which does not fill me with confidence about TI and Casio! Both TI and HP offer downloads which they didn't write, and both TI and HP have both branded and other software available from non-manufacturer sites; before the internet was big, HP enclosed third party application info booklets with their calcs; the TI page which you posted is much like that info just being transferred to a web site, period. It's still everything on its own merits and caveat emptor (which is basically why everything comes with a disclaimer which says that it isn't even warranted to be merchantible or fit for any purpose at all, and tough luck to you if it isn't, or if it even wipes you out :) Lack of mention is a significant omission, since cost is part of the valuation of a product (and in the past, you based much of your own comparisons on extra costs of such things as HP plug in cards, remember?) Plug-in cards for 3rd party apps were almost the only things that cost extra; the 49G does not have plug-ins, and nothing at all costs extra. DaVinci applications comparable to old HP48 plug-in cards are still for sale for TI calcs. Some of the applications that are either built-in or free for the 49G are still extra for the TIs. In your heart, you know he's right [Barry Goldwater slogan :] Say, why don't HP and TI start a certification program to test potential authors and create an extra market -- then you could look for the certified calc programmer seal on all your software :) Does TI support any other authors' software? If daVinci's EE Pro messes up, will TI fix it? By the way, it wasn't HP which kept fixing the 49G CAS and OS; it was only the individuals who wrote it who did so, and the same for all the very well-supported other software. User reviews are what more and more people are going by, and that's what you have right here (and on hpcalc.org itself), and since everything is free for the 49G, there is no risk in trying it out for yourself. It can not be reprogrammed, so it would be the wrong place for any OS function. It could no more be used for functions than can the slack space in disk files be used to store any more files! Oh, the 49G *is* better, then? Gee, it was hard to tell that you thought so :) If you knew that in the future you would go blind, would you decide to tape up your eyes right now, rather than wait? The whole atmosphere and trend towards a lower quality and intelligence in many things is visible throughout society, and is part of the never-ending conflict between rising and falling values, in which falling is winning on too many fronts, In TI you don't have to key in command CHOOSE. That slows you down significantly. MetaKernel is not an HP product and I'm not familiar with this software extension. ==== I think that I did not express well: what I wnted to say talking of CHOOSE and CHOOSE2 (quicker) boxes, was that you can press a number or a letter key and the first item begining for that character, will be selected, w/o scrolling... : Last version of MK for 48GX is 2.3. Version 3.x is implemented in 49G. The same occurs wiyh Erable and ALG48 (math software for 48). The latest version is implemented in 49G with the name of CAS The proof is in the US population. It is as healthy as european if not more. Proof of European scientists claiming, that US meat is unhealthy, therefore is not reflected in real subject population and as such is rather considered a pseudoscience and politics, not a science. I don't know how you get it in, but EU automotive duty fees for cars manufactured outside EU are available online altough I don't remember WWW address at the moment. Just do search for duty fees - autmobile import EU or so. There are many advices especially for Britons, who pay 10% duty fee on imported US cars. Just make some effort and search for it. You can also find out, that EU introduced quotas on the Russian made steel to protect their steel industry :-) By the way, what US model do you exactly have ? ==== Can I upgrade my GX to the latest ROM revision? It is a eeprom memory? It is as bios pc upgradable? ==== No, you can not. It's ROM The last 48 ROM is version R (write VERSION for checking wich is the yours) But if you want more, much more! than version R, install MetaKernel2.3 ==== not completly true.... there is none by default, but you can turn them on by sending a specific command, and then you are going to see the activity... Well, rom is everywere, RAM is 80000 to fffff p1 and p2 are configured at 40000 bs is configured either at 3f000 or at 7f000 depending on the cases... (but mostly 3f000) one exceed the led This is true, could we put some type of detection circuitry that disable the led if it detects a read/write in flash? ==== And shoot the mother down! :-) ==== Hello HPanda and Julien Why don't you try this (for example): 'd1d1Y(X)+d1Y(X)+Y(X)=1' 'Y(X)' DESOLVE It works OK on my HP49 and I verified the result by plotting it after setting the constants C0 and C1 to, say, 0. It is a sinusoidal decay to unity after an overshooting rise(due to a step response). IIRC, d2 is an operator which takes the derivative wrt the second variable, which is not given in this case. e.g. d2Y(x,w) is the derivative wrt w. d1d1Y(x) is the second derivative wrt x. ==== I am in RPN mode and want to write the following program. Prompts for an amount. You enter it. If bigger than 200000 output 36% of amount. If bigger than 120000 but less than 20000 output 35% of amount. If bigger than 80000 but less than 120000 output 29% of amount. If bigger than 20000 but less than 80000 output 18% of amount. If less than 20000 output Too small I have no idea on how to do that. I have tried lots of stuff, but I don't seem to understand the syntax of the calculator language. I also don't know where to get a nice manual since HPCALC.org is down. Thanks for the help. Michael NNTP-Posting-Host: dutw623.wbmt.tudelft.nl Mime-Version: 1.0 ==== Michael Frey wrote: << CASE DUP 200000 > THEN .36 * END DUP 120000 > THEN .35 * END DUP 80000 > THEN .29 * END DUP 20000 > THEN .18 * END DROP Too small END ==== Err...I ve not programmed for ages, but it will really look like what you type to calculate.. To compare, should be: IF Value1 Value2 == THEN DoWhatYouWant ELSE DoSomethingElse END Of course, you can do: IF Music THEN IF ElvisPresley THEN Dance ELSE Swing END ELSE StopMasturbating END To store a value, this might go: 5 'X' STO will store 5 in var X 4 X 3 * + 'X' STO is another calculus... See how easy it is? This is very little help, but it might help you. Here is some stuff which could help you: Type the followind code: << Give me an amount INPUT OBJ-> (-> in actually the right arrow, char n¡141) The 'input' command uses two strings on level 1 & 2 of the stack, and wait until you enter a number, which will replace the strings on the stack. Ok. And valid with enter. The comparison operators (<,>,<=,>=,=) take two arguments. So, if you want to know whether a > b, you have to get on the stack: 2: a 1: b and then type > Let's go: you have your amount on level one, we will duplicate it because the '>' operator clears the levels 1 & 2 and puts on level one the result (1:true, 0:false) << DUP 200000 IF THEN .36 * END You have to use two comparisons, and see if they are both true (logical AND) << DUP DUP 120000 SWAP 200000 < AND IF THEN .36 * END It's the same. But I would rather use: << Give me a number INPUT OBJ-> DUP 200000 IF THEN .36 * ELSE DUP 120000 IF THEN .35 * ELSE ......... and so on... END END (don't forget to close the IF structure :)) ==== Alright just a moment after posting I reduce price to $90+5 shipping, this is final. ==== I'm having problems getting the PC Connectivity Kit (3.0r4) to work under Windows 2000. For some reason I am unable to select a COM port when the program starts - the port selections are greyed out and it reports it is trying COM 0 (?) which fails. The online help is worthless, and all the usual tricks tried (uninstall/reinstall, check port setup in Control Panel etc., etc.) Is anyone else having this problem? Any way to send some feedback to HP about it? ==== Yes, but infinity is NOT a bounded number. So ordinary addition and subtraction are NOT defined. These operations are redefined for transfinite numbers. It is not MY definition, it is one of the conventional definitions used in mathematics. You can't add one to it and expect it to be a different number, because infinities are NOT bounded numbers. Your confusion is symptomatic of the fact that you're unfamiliar with the subject of discussion. I've given you a reference, use it: http://mathworld.wolfram.com/ Whatever. But if you spout nonsense publically about a subject you obviously know little about, expect to be corrected. If after being corrected *and* pointed to reputable references you persist with your nonsense, well then you're just being deliberately obtuse, there's probably no point discussing anything. I know what you were doing, and I'm telling you it's irrelevant, since it mathematics and science are two different fields, with differing methods. Describe what? Gravity? It's elegantly described by GR's tensor equations. However, science is irrelevant to our discussion. Why are you trying to change the subject? I repeat, it is not my definition. Look, I'll do you a favour and I'll look up http://mathworld.wolfram.com/Infinity.html. This gives An unbounded number greater than every real number (equivalent to the definition I gave you). This is a clear definition of infinity, a concept which you said was undefined. Why don't you write to Wolfram and tell them they don't know anything about mathematics? Perhaps while you're at it you may also give them tips on how to write a better Mathematica. This subject has been studied since Cantor. If you want to take up arms against vast volumes of work, be my guest. I won't stop you from a Quixotic attempt at fighting windmills. But if I were you, I'd retire gracefully from this discussion until you know what you're talking about, lest you mislead anybody... I recommend this too. The material is technically quite easy but very fascinating (and puzzling). I for example have an economist's training and even I understood it! (see http://netec.mcc.ac.uk/JokEc/jokes/joke47.html ) For other readers: Cantor also showed that there are as many points in R^2 as there are points on R. An other interesting thing is the so-called Cantor-set, a subset of [0,1] which has as many points as [0,1] but has a measure of 0. After reading this stuff one might want to read some elementary measure theory and understand that there is a subset of [0,1] which can not be measured. If this isn't enough, then go for the Banach-Tarski theorem. ==== there is no proof of any 'actual' infinity. period. mine is neither. I got your point. i don't agree and now you claim that i am unfamiliar. (trying to score me off) how about the buch on people line up disclaiming Cantor ? i bet those are also interesting. this 'which you call nonsense' has been going on for a long time. i agree are NO I>'ll look up http://mathworld.wolfram.com/Infinity.html. thank you. i looked it up. a dictionary definitions are never actual representations. infinity is a very gray area. Do you think that there are people lining up disclaiming Gauss, claiming that the bell curve doesn't actually exist? This is mathematics we're talking about. Cantor's proof is a proof, not a conjecture. Are there people disclaiming Pythagoras' theorem? In mathematics you define objects, axioms, operations, and you prove theorems based on this. The definition SPECIFIES what a mathematical concept is. The concept is, in fact, the definition. I didn't say anything about your intentions, nor do I particularly care about them. I feel nothing for you, I don't know you. But if you make an incorrect statement, I will point it out, for the benefit of other readers. Doubts may be healthy, but incorrect statements are nevertheless incorrect. There is no reason to doubt that PI is PI. It is not a question of faith or belief. Likewise, the concept of infinity in mathematics is certainly NOT undefined, there is a definition right there on Wolfram's site. Readers can take my word for it, along with Wolfram's, Cantor's, the body of Transfinite Number Theory, and along with web sites from mathematical departments from universities around the world (a simple google search on transfinite will do). Alternatively, they can take yours, as plucked out of your hat. ==== Still, it shouldn't give a wrong answer... why don't you guys put this in a bug list so that if and when the CAS source is released, someone can try to fix it? Just a suggestion... :) ==== It doesn't. The wrong answer was returned for a different input.... There is a bug list, but it was on www.hpcalc.org :-/ ==== Is there a way to compute Laplacian and curl in cylindrical and spherical coordinates using hp49g? I don´t have any problem in cartesian coordinates but when I try to use polar coordinates it doesn´t work. Stumbled into this while cruising for the carre font. Is it a new mirror to the hpcalc.org? At least the downloads seem to work which should interest someone. :-) http://membres.lycos.fr/hp49site/ ^QMul etc should not be used to perform operations on hex integers, but on decimal (long) integers. so: ZINT 2 DUP FPTR2 ^QAdd will yield ZINT 4. HXS 1 2 DUP hxs+ will yield HXS 10 4 ==== Thanks, but now I have another question: Why the ZSQRT don't have a good precision? I will have to make the changes in the entire ZSQRT code to obtain the precision? ==== For example making own functions in UserRPL while using APPLY doesn't give me a change to evaluate variables stepwise... Where are the equations? TEACH & CLTEACH ? (which could be revised) How about 80% instead of 100% ==== MIPS anyone? http://www.mips.com/publications/documentation/MD00207-2B-20KCTSMC18-DTS-01. BUT how about just downscaling it from 1 micron to 0.25 micron gaining 1:16 in yield of chips and achieving easily 20MHz while reducing power consumption all at the same time? The ignorant anti-rcobo That is exactly what I was hoping for !! downscaling the pine-sized lines to a reasonable 0.25 micron should give that performance boost to the HP 49G This could be done NOW !!! VPN ==== How can i find the roots of an poly. equation in an RPL program, without putting the coefficients in an vector, or a way of extracting the coefficients from the equation. Can anyone please help. Thank you ==== Typesetting is one thing on the pc where you have a mouse. It is quite another thing on the calculator. The user interface of on calc eqw is one of the most ingenious user interfaces I have ever used. I would never have thought it up. ==== No, not Gamma[11+1], just 11 ;-) This applies only to the numeric solver, though. I don't dismiss the poor directory structure, but I would rather have CAS improvements. I actually do quite a bit of stuff on my (TI) calculators that requires large variable sizes as well as many variables. My point was, that, you are probably one of the few who actually benefit from tree structure. The majority of calculator users keep just a few programs and variables on the calculator. When the problem needs more, it is usually much better to do it on a PC. In that sense, TI memory managment is sustandard to HP but the tree strucutre of HP is not that critical and many users overrate it. You are exception rather than the rule. flat I have TI92+ so my explanation is limites to this model. On TI92 press the key VAR-LINK which is a 2ND function of the - key. You can lock variables ormove them to the flash memory (or both) which protects them against deleting. TRUE, that TI provides memory reset software menu but it is several levels deep and gives you at least two dialog warnings that allow to quit before the action is taken. I don't find it easy altough it is somewhat easier, than pressing the reset pin on the HP49. Folders are directories. You create them using command: NewFold . By default TI only has one folder: MAIN. You can create as many folders as you want but you cannot create subfolders. All created folders are in the root of TI memory pool together with MAIN. This is the major difference between tree structure of HP unlimited level depth and single level depth structure of TI folders. Another is that TI limits variable and folder names to 8 characters. It is somewhat better on the HP altogh HP menus only handle 4 characters which makes sofmenus somwhat difficult to use. When you are asked for exp= key in the name of your stored expression. the Once you memorize the menus frequently used, use menu numbers. That allows you to become extremally fast for the frequently used menus. HP copied that feature in its HP49 calculator. I agree, soft menus on a HP are probably a simpler and nicer. isn't Quite contrary. TI screen and keyboard response is instant. There is no visible delay for keyboard input or screen reaction which is so annoying for many on HP48 and especially on even visibly slower HP49. Keep in mind, that I'm talking not about calculation speed, but simply hardware reaction to the user input and machine output. The calculation speed is in many instances comparable. libraries, Equation libraries are TI APPS EE-Pro and ME-Pro for mechanical and electrical engineers, but they are not free. Generally TI has less leagcy software due to the fact that it is much younger calculator than HP28/48/49 line and never was a preferred engineering calculator in the past. That is changing at least in US. Now most of the engineering students and engineers are educated on TI's and HP48/49 has been discontinued in major retailers. You can still probably buy one online but not that many people even know HP49 exist. ==== There is a lot of good software made by other vendors with reputation, but there is also much junk out there for Windows, that crashes computer, gives unreliable answers to the problems etc. I won't buy the argument that the full directory of math or engineering software writeen by unknown users can be reliably used in the engineering world as a tool unless it is heavily tested by the large pool of users with good understanding of the problems involved. This is not what other sompanies are compalining, that the value of Windows is a large number of very good applications bundled with Windows :-) I never said that all this is for free. Some software cost you on TI, some did cost you on HP. The fact, that TI promotes them gives certain level of assurance to the quality of the product. I doubt if TI will support software that is full of bugs or unreliable answers. I would rather see that ROM used for extra math :-) I do not deny that HP has a long list of legacy software. HP28/48/49 line is several times longer than TI line. The problem is, that HP barely will get any new software where TI clearly will :-) That is why I thnik new users should rather stay away from dying HP calc even if HP49 is now a better choice. The difference between HP and TI interface is so great that it might be difficult for some to switch in the future. Jack ==== In article <3CA1C4AE.F62BF657@arcada.fi>, Markus Nylund writes: Unfortunately, this is way too close to the truth. Bill alternate E-dress wtstorey@ieee.org.no.spam.please (Use the obvious) NNTP-Posting-Host: cable53a069.usuarios.retecal.es Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit ==== J Marchel escribió en el mensaje news:Horo8.92712$7b.8220458@bin7.nnrp.aus1.giganews.com... that ????????????? X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Message-ID: NNTP-Posting-Date: Wed, 27 Mar 2002 16:35:09 CST ==== Jean-Denis wrote in message news:01HW.B8C60DB40038D932024D5638@news.noos.fr... not Common TRUE, the French farmers just happen to be violent which was shown on world TV and I'm sure most can recall it which underlines my point. the to protection unsafe What is highly believed is not a scientific fact. In the middle ages it was highly believed, that the Earth is flat and in the center of the world. US life expectancy is comparable with EU countries. What is a scientific proof that hormonetic or genetically modified food is so bad ? this personally than and to which Cars imported (not manufactured in EU zone) EU market are subject to 20% duty fee. In US such fee is 6% and is limited to the cars manufacture ouside North American continent. It is not true, that electronics is similar price in Europe as it is in USA. I've recently bought several japanese LCD monitors for my european friends because they were about 30% cheaper here. I'm talking about the exact same model. Jack X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Message-ID: NNTP-Posting-Date: Wed, 27 Mar 2002 16:48:38 CST ==== R Lion wrote in message news:a7tgg2$sve$1@titan.bt.es... allows ***copied My God. You don't even know your own HP49 ? Try for example: Press: APPS, next press 8 key and then press OK from the soft menu and here you go, you are in the Matrix writer applicaiton without scrolling TI way. Another example is - set 117 flag to OFF and then press any kind of menu and choose menu by number and voild - HP49 copied TI feature. I hope, this was educational :-) Jack NNTP-Posting-Host: cable53a069.usuarios.retecal.es Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit ==== J Marchel escribió en el mensaje news:a%ro8.110646$Gf.10524268@bin2.nnrp.aus1.giganews.com... I've never owned a 49. I have a 48GX All you are saying exists in my CHOOSE menus (HP) and CHOOSE2 menus (MetaKernel). Some years before the 49G were developed, and so, I still ask you: WHAT ARE YOU SAYING? Raul Newsgroups: comp.sys.hp48 ==== On Wed, 27 Mar 2002 23:35:09 +0100, J Marchel wrote (in message ): You are right, sometimes they are violent, and I disapprove. But this is beside the point (BTW, it seems to me that political disagreement is more and more expressed violently: antiglobalisation movements, about-to-be-closed factory workers threatening to blow it up...). This is completely beside the point, but since you mention it: the charge of the proof is the other way around. For public health matters (drugs, food,...) nothing is allowed until it is proven safe. I am waiting for your proof... Wow! not mine! I suppose I inadvertently smuggled it in! In US such fee is 6% and is limited to the cars manufacture ouside This is no proof. In fact, I can quite confidently state that the reason for that is not protectionnist measure, as *many* other electronic items are priced quite similarly between the US and Europe. The fact is, maybe 10 years ago, I purchased my electronic goods extensively from the US. Nowadays, I nearly don't do it any more (and yes, there are a few exceptions, such as blank CDRs, for which the reason is very different). Jean-Denis Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit ==== I've tried answer your e-mail, but something is failing, so I post here: Thanks for your new ideas: I'll download those programs when hpcalc.org works again and I'll see. What I did the last weekend with your help was my own MTH, PRG, LS CHARS, LS MODES and LS MEMORY menus, for substitute the original ones in my 48GX. I have reorder the commands for finding those I want in the first page, and also added new ones from MK and CAS (Erable+ALG48+own algebra commands) My 48GX, is not the calculator I bought some years ago. Today it is much more, and the idea was just that: substitute the original menus, with new ones, more usefull because they had all. Of course, I wanted these menus worked in edit mode for write tokens when programming. And also, I wanted that some menus of submenus (like MTH), was not saved as last menu... Because these things, I was playing with SysRPL. (The SA function of Keyman was a good friend) and posted in the NG for your help. This is the second part of my MenuSystem: the first one, is a set of CHOOSE2 boxes (that I made two years ago, when I installed Erable), that substitute TIME, I/0, STAT, etc, etc, and also, CAS menu, for giving to Erable, ALG48 and my own algebra commands a common interface. It makes my live much easier. I hope you understand my bad english. Thanks for all and best regards. Raul Lion X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-GC-Trace: gv1-8FaBhLTP5doz0Zwq/Nv8qDl3IaAHWJ9BDlR Message-ID: NNTP-Posting-Date: Wed, 27 Mar 2002 16:40:09 CST ==== Raymond Hellstern wrote in message news:a7obll$c2d$05$1@news.t-online.com... Nope. They had communism. The whole Europe is proud of having socialism. Jack NNTP-Posting-Host: cable53a069.usuarios.retecal.es Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit ==== J Marchel escribió en el mensaje news:dTro8.195372$1g.16233362@bin3.nnrp.aus1.giganews.com... Aaahhh! I didn't know you were the spokesman of the whole Europe.... Raul Mime-Version: 1.0 Content-Type: text/plain; charset=Windows-1252 Content-Transfer-Encoding: 7bit ==== Hi, J Marchel schrieb im Newsbeitrag news:dTro8.195372$1g.16233362@bin3.nnrp.aus1.giganews.com... How do you expand the letters USSR? (Hint: UNION OF SOVJET SOCIALIST REPUBLICS) Sorry, you don't seem to know what you're talking about;-) Where do you have this judgement from? Have you ever been in Europe? Maybe we have different things in mind when saying 'socialism'. But I wouldn't say we have much socialism here (at least in Germany), and I've been living here for a very long time. Raymond ==== In article , merops wrote: Much to my surprise, the Palo Alto Fry's Electronics recently loaded up on HP calculators. The only current model I didn't see was the 48G+. Sincerely, Bob Corbett References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit ==== Why would you be surprised? Fry's business model is to buy pallets of discontinued or overstocked items. Robert Corbett wrote: ==== Thanks a thousand Denis =) Regards, Eric. ==== for example sum(x = 1, inf., ln(x / (x + 1))) solution is 1 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4910.0300 ==== The 49g won't do this one. I think it is divergent anyhow. I've found that only a few infinite series can be found with handheld calculators. Usually a computer based program like maple is required. Micah Pavel Prokop wrote in message news:a7lcbe$2ml8$1@ns.felk.cvut.cz... Organization: Halfling Soft MIME-Version: 1.0 ==== On Sat, 23 Mar 2002, Thomas Rast wrote: Some versions of Linux have been written on CPU with no MMU, and it works (well, don't try to push it too strong). -- Erwann ABALEA - RSA PGP Key ID: 0x2D0EABD5 ----- AD: Tous les outils et matériels existent, ce n'est pas onéreux de plus. AD: Monte ton serveur et tu pourras faire ce que bon te chantes. DP: Et la liberté Mr le censeur??? tu en fais quoi??? -+- In : Guide du Neuneu d'Usenet - Bien chier sur la moquette -+- NNTP-Posting-Host: cable53a069.usuarios.retecal.es Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit ==== Raymond Hellstern escribió en el mensaje news:a7im9j$sbm$04$1@news.t-online.com... Unknown Instr. Unknown Instr. I'm using MetaKernel... Raul Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 7bit ==== Hi Raul, sorry for the inconvenience. I should have known;-) But seriously, NULLNAMEs are used in libraries only. I just used it for demonstration. You can rewrite the program as follows: ASSEMBLE =DispMenu EQU #3A1E8 =InitMenu EQU #40F86 =NoExitAction EQU #3EC85 RPL :: ' :: NoExitAction { { Key :: TakeOver _someAction_ ; } } ; InitMenu DispMenu ; This should work, but in general I'd pass the inner program to the soft key slot of a POL, which does most of the housekeeping work for you;-) Regards, Raymond NNTP-Posting-Host: cable53a069.usuarios.retecal.es Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit ==== Once more, thank you Raul Raymond Hellstern escribió en el mensaje news:a7lbfa$kv6$05$1@news.t-online.com... Content-Type: text/plain; charset=us-ascii; format=flowed ==== rcobo wrote: how about the lego mindstorms, you can use your hp with that kit as well. You can also buy lots of sensors, so that you for instance could create a map making robot, plotting the map to your hp48. How about creating a robot abapting to the surrounding room, controlled by a calculator. Sounds pretty fun.. Tor Erik ==== Where can I find the FAQ? Thanx! Riccardo ==== Riccardo Conturbia wrote: /www.hpcalc.org/hp48/docs/faq/ regards, Hyperion X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 ==== All that I can get is a message saying that they have no more bandwidth... :-((( Other sources? Ricky ==== Riccardo Conturbia wrote: OK, http://www.engr.uvic.ca/~aschoorl/ regards, Hyperion ==== Pedro Rodrigues wrote: Of course. That's the way I always do these kinds of computations if I also want to see the outcome of the percentage itself. Otherwise I multiply with 1.15 (no adding needed) as Michael already described. Actually, because this is indeed the easiest way, I guess it's the reason why the developers have hidden the %-function. regards, Hyperion ==== Since hpcalc is down for the moment I would really appreaciate it if someone of you guys would email me GDream and GRS64 (English). michi_frey@web.de Or if you could give me an address where i can download them. I have searched everywhere I could think of. Thanks Michael Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit ==== Hello: What is the best place to purchase HP calculators (48GX) and RAM cards? Thank you. Sincerely, Jason Content-Transfer-Encoding: 7bit ==== Jason: Try htttp://www.cynox.de I have had VERY good experiences (2) with them. My favourite is my HP 48 G+ with 512K of RAM. Good luck! amccornack@cox.net On Sun, 24 Mar 2002 18:48:32 +0100, Jason wrote: ==== Hi, All! I wonder how to print a display object (ON MTH) directly to a serial port, in intention to print a picture. Best regards, Tal ==== HPhreacker 2002(?) wrote in message news:<3c9cda57@news.mhogaming.com>... Have you heard of PDA? http://www.saltire.com/xpander.html ==== Why is my HP49 slower than HP48GX: I have 2 equations to plot: y=(25-x^2)^(1/2) ; Y=2: I have compared both calculators and the result is: -Ploting: HP49 was little faster than HP48 -Finding AREA or ISECT: HP48 ~2 sec HP49 ~20-30sec WHY????????????????????? and HP48 have given me area( betwen isect of functions and y - ax =9.19... OK HP49 - II - =19.08... not OK What is wrong wi9th my HP49?? ==== J Marchel wrote in message news:... the HP49 comes from the 48. why don't you compare the HP48 and TI at the time the 48 came out? that is when all happened. that is what i am talking about. piglet competition 1- eat French-fries and get greasy fingers. 2- get a TI calculator 3- try to enter an equation. be careful, it is slippery!! NNTP-Posting-Host: cable53a069.usuarios.retecal.es Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit ==== JLA escribió en el mensaje news:983785b2.0203231959.1f03e8ba@posting.google.com... Absolutly. But answers I'm getting from him talking about photo lenses, are not better... Raul ==== J Marchel wrote in message news:... What, are you blind or just plain stupid? I am getting my degree in numerical anaysis with a minor in electrical engineering, and it requires quite a few engineering classes. In all my engineering classes, I have only seen a handful of students and professionals alike using TI's and even fewer using Casio's. 95% of the students and ALL of the teachers carry HP's. I wonder if you work in a TI engineering building, or even better yet, if you work for TI. Hmmmm...... Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit ==== On 24 Mar 2002 06:57:28 -0800, top88keys@yahoo.com (Aaron Toponce) wrote: Unfortunately at my school the various types of TI calculators are the most likely to be seen.both in Engineering classes and to my shame Physics classes, which I teach. Even students in General Science classes seem to have TI calculators. Part of the problem is that many students had TI calculator in High School and bring them to college with them. Several years ago some students were told by their professors that they needled a certain kind of calculator for their class ( Not necessarily an HP or a TI ). Man what an uproar, from students and parents. I do not know what it would have been like if students were required to have a computer as it is in some colleges and universities. Also part of the problem is HP dropping the ball. When I got my Physics degree in 1982 ,HP ruled the roost here. Everybody had a HP41 attached to their belts. About 4 or 5 years ago ( Before the ACO)one of our engineering professors here contacted HP. ( He was working on upgrading the curriculum in the area of computer science/nunerical analysis taught to engineering majors. There had always been an portion of the first numerical methods class that has taught engineering students how to use an HP calculator. For example the HP41, 28C/S and the HP48 SX/GX) He wanted to see if HP planned to continue to manufacture the HP48 series and was told that they did not plan to design any new calculators( (Note the word design) Since that time HP calculators have not been required for Engineering students and most use what thy have used in High School and that is a TI brand calculator, A shame really. Harold A. Climer Dept. of Physics,Geology and Astronomy U. Tennessee at Chattanooga ==== Hi! First: Does anyone have a copy of the program Physical Constants by Michael Woodhams - I was so stupid as not to download it when I had the chance... Second: How does one see the keyboard scancodes in Emu48? Thanx, Artur! :-) NNTP-Posting-Host: cable53a069.usuarios.retecal.es Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit ==== I''ll e-mail you... Raul Artur Meinild escribió en el mensaje news:3C9F3684.10005@ostenfeld.dk... Michael NNTP-Posting-Host: 192.38.216.34 Mime-Version: 1.0 ==== Thanx, I've printed them out, very useful... Now, if somebody just had the Physical Constants library... I need to see some examples of full-screen menus for my programming project (Physical Properties lib), any other suggestions are welcome. If I don't find anything useful within a couple of days I'm going to return for some help from experienced HP48 programmers... So Beware! :-) - Artur R Lion wrote: ==== Micah wrote in message news:... Hi Pavel, Hi Micah! Well, the HP49G does do something with sum(x = 1, inf., ln(x / (x + 1))). When you enter the sum and press EXPAND, it displays a nice question mark ? after a while, wanting to say that this sum doesn't converge to anything (??). Pavel, are you sure that the answer must be 1? Greetings, Nick. P.S. EVALuating sum(x = 1., 100., ln(x / (x + 1))) returns -4.61512051684. EVALuating sum(x = 1., inf., ln(x / (x + 1))) returns -6.90875477949, so the sum doesn't seem to converge to 1. NNTP-Posting-Host: kansis5.pc.helsinki.fi Mime-Version: 1.0 ==== Pavel Prokop wrote: But ln(x)<0 for all x in (0,1). -Ville Koskinen Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit ==== Ville Koskinen wrote: Since ln(x/(x+1)) = ln(x) - ln(x+1), any partial sum: sum(x = 1, n) .. will be -ln(n+1) Hans Kristian NNTP-Posting-Host: slwat.sh.cvut.cz ==== eh, of course correct solution is - inf. (ln 1 - ln 2 + ln 2 - ln 3... = - ln (n+1)) So ? always means that expression is divergent? HP can't solve equal sign? Nick Karagiaouroglou píse v diskusním príspevku news:cd9ca36b.0203250155.c3d4841@posting.google.com... news:... that Usually X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 ==== The TI89 returns -inf instantly. No, it can mean that the '49 can't solve it (doesn't know the solution), or it can mean that the solution is undefined. Regards Steen ==== int (1/(c-v^2)) dv answer is (arctanh(v/sqrt(c)))/sqrt(c) This one is the first in real life which i couldn't do with my hp49g. i had to use my brain instead. YUCK! So please help! Thanks. NNTP-Posting-Host: dutw623.wbmt.tudelft.nl Mime-Version: 1.0 ==== Kolja wrote: Mine does INTVX(1/(C-X^2))= 1/(2*sqrt(C))*LN((X^2+C+2*X*sqrt(C))/(X^2-C)) just fine. using arctanh(X)=1/2*LN((1+X)/(1-X)) you see that it is the right answer. -- This message was written with 100% recycled electrons Pivo NNTP-Posting-Host: ad6-m160.net.hinet.hr ==== i am aware of that, but is there a way (besides substitution) to autoconvert ln to arctanh like, for example in maple, convert( f(x), trig ) or like exp2pow, expln thanks! K. Peter Geelhoed wrote in message news:3C9F4213.AC409ADB@student.tudelft.nl... X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 ==== autoconvert So you knew that the calc could solve it, but the answer is not in a form you like - is that it? Regards Steen ==== Hello, all ! I'm looking for someone who could help me with interrupts (in assembly language). I want to trap the HP-OS interrupt system, and to write my own. I know where I have to write the adress of my interrupt handler, but I would like to get an exemple of an entire routine handling keys, cloks 1 & 2, and perhaps serial port. So if someone could mail me the source code of an interrupt handler, I would be very happy :) Best regards, HPThifu ==== Concerning the hpcalc.org mirror - who from the RWTH Aachen is reading this group? Please post here or send me a mail, thanks! Roman ==== Cher JYA, Je penses que Tu as un compte en Dollars ainsi qu'en Euros. Peut être que pour ceux D'Europe vous pourriez éventuellement faire le regroupage et le Swap? Pour les petits chèques les frais sont rédhibitoires! hélas. Amitiés. ----- Original Message ----- -- Tel: +33 4 6883 4091 Fax: +33 4 6887 6595 Organization: Halfling Soft MIME-Version: 1.0 ==== On Mon, 25 Mar 2002, Chauvineau M A wrote: You're posting into an international newsgroup... I don't think it's what you intented to do. Anyway, I don't have a US bank account, but I have a PayPal account, and I used it to support Eric. You can do it too. -- Erwann ABALEA - RSA PGP Key ID: 0x2D0EABD5 ----- Alcotest> OUi, mais aussi pour la création des 2 autres ducon, Expliquez moi, pourquoi voulez vous créer deux autres ducon ? Vous vous sentez seul ? -+- FF in Guide du Neuneu sur Usenet - Les deux font l'impair -+- NNTP-Posting-Host: mix-montpellier-112-2-80.abo.wanadoo.fr ==== YES I D'ONT THINK TO SEND THIS PERSONAL SUGGESTION HERE OF COURSE! Sommething was going wrong! I d'ont understand why and what. Sorry to all. Erwann ABALEA a écrit dans le message de news: Pine.LNX.4.33.0203251609200.7113-100000@patchwork.seclogd.org... where ==== Hi everybody! The first part of the Complex Mrathon is ready. It is already uploaded as a PDF document to www.hpcalc.org. Unfortunately it is not possible to also post it here because it is too big (over 24 pages) and it has too many graphics. Since Eric's site has the problem with exceeded bandwidth, perhaps we should help by not downloading to much from there for the next days. So I'll mail it to anybody who wants to have it. Just drop me an email. ( If somebody also wants the Trigonometry Marathon, then send me an email saying that you want it and I'll mail it to you. ) Some of the contents of the first part of the Complex Marathon are: 1) Complex numbers and the displaying modes for them. This part deals with complex *numbers* only (type 2). Symbolic complex quantities follow on the next parts. 2) How to use vectored enter, to enter complex numbers in polar form with units for the angle, for example (1.,20_°) (This is for you Veli-Pekka :-) ) 3) Many things about the behavior of the HP49G when it calculates roots or broken exponents of complex numbers. All combinations of (numeric) argument types are covered. 4) Composing and exploding complex numbers from their real & imaginary parts. 5) How to use the custom solver menu facility to numerically solve a complex equation with the built-in numeric solver. And many other not so obvious things. Complex greetings, Nick. ==== Can you help me? I want to create Backup and Library Data objects with my HP49G, but I don't find the correct programs in Sys-RPL or ML to do this type of objects directly in my calculator. Thanks Un saludo para todos desde Cartagena de Chile ==== R Lion escreveu na mensagem ... Was only a lame self-modifying code that caused TTRM and changed on a OFF-ON. Used { CASCM } ORDER to make it the 1st ob, CLVAR then ARCHIVE. OFF-ON=TTRM, answered NO, RESTOREd the back and boom! Worked. PS. Now my problem is w/Erable 3.2. I've installed ERABLE1.LIB in P1 and set it to Read-Only. To test it i typed: 'X^2+X^2+X^2+...' ( reached with « X 2 ^ 1 100 START DUP + NEXT » ) and EXPAND. Worked fine. ==== Hello. Are you going to fight it in the BattleBots? :) http://www.battlebots.com/ And how you'll name it? The HP48-Dr. Inferno , TI Nightmare or HP48ROM-Revision-R :) I can imagine it: ------------------------------------------- On the Red Sqare, to my right, You´ll have to hide your TI, or him will destroy it, He uses RPN to torture all his enemies, The Equation writter and Equation library will be your worst nightmare, And a fast CPU and Pretty Print won't save you, This is HP48-Dr. Infernoooooooo ------------------------------------------- Of course, just kidding :) J.C. Ramos ==== Tor Erik Meland wrote in message news:<3C9DE73A.4090201@online.no>... yeap. that sounds good :) put two light bulbs on the ceiling an a ligth sensor on the robot and then symulate celestial navigation. secret plan uncovered: the HP48G will controll the world, he he he. regards with yeap, i'll use the built-in artificial inteligence of the HP48G. intelligence against brute force. calculators. The TIntimidator sounds OK :) nightmare, i got a good one: hang a TI calculator from a rope and punch it with the rumble-robot (swinging). i'll count how many strokes it takes before comming apart. regards ==== Tor Erik Meland wrote in message news:<3C9DE73A.4090201@online.no>... Yeah, yeah, yeah! And then send it to HP and start devastating the CEO offices. The long dark revenge of the HP49G. ;-) Screaming for vengeance..Judas priest or HP49Gist? Greetings, Nick. P.S. By the way, pre-programmed action sequences are OK, since the HP49G is so versatile when it comes to programming. But what about interactive control? With these keys it would be hard. Do you think it is possible to connect a joystick to it? ==== Tor Erik Meland wrote: What about having someone set up a room with obstacles, broadcast sensor readings on the web and have a competition to see whose virtual robot, running on an HP48/49, can come up with the correct map of the room first? :-) ==== On Sun, 24 Mar 2002, Tor Erik Meland wrote: It is really good idea. Do you have some experience or detailed information about mindstorm's IR? I am not sure HP48 is in frequency range the mindstorm box uses. HoHo -- Honza Holeãek, FI & PÞF MU xholecek@informatics.muni.cz http://www.fi.muni.cz/~xholecek ==== HPhreacker 2002(®) escreveu na mensagem ... My KERNEL library has corrupted with the CASCM problem. Changed to v.3.2. ==== R Lion escreveu na mensagem ... The program is for HP48G(32 kb ram),no Erable or Alg48! ==== tal_hp48@yahoo.com (Tal) wrote in message news:<262269bf.0203240437.2fba953e@posting.google.com>... Hi Tal! Never tried but it should work: When you have the picture on stack level 1, then press arrow down to take it to the picture editor and then press ON-MTH. When the picture is already in PICT, press arrow left to go to the picture viewer and then press ON-MTH. Does it work? Greetings, Nick. P.S. If yoo have a serial printer for the PC, then you'll not get the picture printed, but its binary translation from the printer. You must have software on the HP, that translates the picture to something that the printer understands. ==== Raymond Hellstern escreveu na mensagem ... What card are you saying? Could it load RAW files? I have 225 line programs! ==== Hi all! Yeah, but hide the good wines from the photons path first. You don't want to drink vinegar? ;-) Now, that's *the* usage! :-) Greetings, Nick. ==== At the moment I don't know how to do it, but I'd be more than happy to learn how to do it! (I would probably do it on a FreeBSD-machine) So, if no one else does it, maybe I should give it a try... / Magnus On Wed, 20 Mar 2002, Eelco Rouw wrote: NNTP-Posting-Host: dirkdiggler.xs4all.nl ==== Great! Should be very nice! Magnus dahlstedt wrote in message news:20020325115758.Y55950-100000@gandalf.midgard.liu.se... to problems X-Original-NNTP-Posting-Host: 200.184.104.185 Message-ID: <3c9f42c7@news.mhogaming.com> X-Original-Trace: 25 Mar 2002 08:31:19 -0700, 200.184.104.185 ==== Why can't my HP 49G do the ILAP of (x^-5/2)??? I tried it with several different configurations, exact, aprox... Perrone ==== Is there a way to get the number of terms in a list without actually decomposing the list? What I mean is, I want something like { 1 2 3 4 5 6 8 } to return the number 7, but I don't want the numbers 1,2,3,4,5,6, and 8 on the stack. Is there a command for this? I need a UserRPL or SysRPL command to do this. --Andrew Huey NNTP-Posting-Host: cable53a069.usuarios.retecal.es Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit ==== Hi, Andrew: << { 1 2 3 4 5 6 8 } DUP ->OBJ DUP DUP 2 + ROLLD DROPN >> I hope this helps. Raul Andrew Huey escribió en el mensaje news:k8fn7a.qrc.ln@127.0.0.1... References: NNTP-Posting-Host: 3639246381.mi.dial.hexcom.net Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 7bit ==== Andrew Huey wrote: SIZE -- Regards, James NNTP-Posting-Host: cable53a069.usuarios.retecal.es Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit ==== Oh, my God! (To myself: better think before talk) Raul James M. Prange escribió en el mensaje news:a7nq5t$cr5$1@newsreader.mailgate.org... X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 ==== And the SysRPL command is LENCOMP. Also look at other combinations like for example DUPLENCOMP. Regards Steen ==== Hello, Yes, you can use the SIZE command (I believe the SysRPL is COMPLEN).... regards, Cyrille Andrew Huey wrote in message news:k8fn7a.qrc.ln@127.0.0.1... Mime-Version: 1.0 Content-Type: text/plain; charset=Windows-1252 Content-Transfer-Encoding: 7bit ==== Hi, you shouldn't confuse social engagement (or whatever) and socialism. 'Socialism' is a completely different story. I think we're not talking about the former USSR where they claimed to live the socialism... Raymond ==== Tommy wrote in message news:... Hi Tommy! Things get better (from the speed point of view) if you enter the two equations with all numbers as real numbers, that means y=(25.-x^2.)^.5 and y=2. . If I undertood right what has been said here, when exact equations are part of some calculation, then the CAS often intervents the OS functions and slows things down because then results (like area etc.) are not found numerically but if possible symbolically. ( Gurus correct me if I'm wrong. ) Greetings, Nick. ==== Hi Calgarysale! calgarysale@hotmail.com wrote in message news:<3C9D3387.CD0B7863@hotmail.com>... AI? You mean it has artificial intelligence already? What keys did you press for that? ;-) If I got you right, you want to re-order for example sin(x)*cos(y) to cos(y)*sin(x) (?) If so then you can: 1) Enter the equation in the EQW. Then select for example sin(x), press left-shift and then arrow right. This takes the factor sin(x) to the right of cos(y). 2) If sin(x)*cos(y) is on the stack, then enter sin(x) and use the function REORDER. This function orders an expression on stack level 2 by decreasing (increasing) powers of the variable or expression on stack level 1. Example: 2: COS(X)*SIN(X)^2+COS(X)^2*SIN(X) 1: COS(X) REORDER 1: SIN(X)*COS(X)^2+SIN(X)^2*COS(X) The argument in stack level 1 can be anything that LVAR returns, when it is applied on the expression on stack level 2. If you want to solve this numerically, then you use the numeric equation solver (old style), or the numeric multi-equation solver. For the numeric solver (old style): enter the two equations in a list: { A = b + c/5 + h^k E = b * c /k^h } and use STEQ to store them as the current EQ. Then press 30 MENU. You are presented a menu with keys for inputing, recalling or solving for variables. You can enter a value on the stack and press the menu key for a variable to store a value in it. Pressing right-shift and then the menu key for a variable, recalls its contents to the stack. Pressing left-shift and then the menu key for a variable, solves for that variable. The menu key NXEQ cycles through the equations in the list. The solver is strictly numeric (to keep John ahappy ;-) ) For the multi-equation solver: enter the two equations in a list: { A = b + c/5 + h^k E = b * c /k^h } and then press 116 MENU. In this menu press menu key MINIT to initialize the multi-equation solver and then press menu key MSOLV. You are presented a similar menu, but this contains all variables of the system of equations. You can enter values for them, solve etc. Pressing left-shift and then the menu key ALL, solves for all unknowns. If you meant symbolic solving of a system, then: Go to the matrix editor and enter the two equations in a row. Press enter to get the vector [A = b + c/5 + h^k E = b * c /k^h ]. enter the variables you want to solve for as a vector, for example [b c]. Press SOLVE. Many ways. Example: Convert 10_m/s to mph. 1) Press right-shift and then the key 6 to go to the units menu. Press menu key SPEED to get the speed untis menu. Enter 10 and press m/s. Now you have 10_m/s. Press left-shift and then the menu key mph to convert to mph. Result: about 22.4_mph. 2) Enter 10_m/s. Enter 1_mph. Press CONVERT to convert unit on stack level 2 to unit on stack level 1. Hopefully it works now. Greetings, Nick. ==== As I cart my 48GX around, I seem to be shaking the memory cards loose, resulting in Warning: Invalid Card Data. Have any of you encountered this problem, and what can I do about it to lock the cards in place when I want them, yet can remove them? Lance ==)--------- --==--==--==--==--==--==--==--==--==--==--==--==--==--==--==--==--==-- remove this -vvvvvvvv || Don't believe everything lrreiche@soli.inav.NO.SPAM.net || you read. Whatever you 8E03 8D25 7D69 07F4 8845 6CCA 28E8 67CF || _do_ believe, make sure You succeed, or you die trying. || you DON'T believe the Until you succeed, you never relax. || opinions embodied herein Until you die, you never give up. || are my employer's! --==--==--==--==--==--==--==--==--==--==--==--==--==--==--==--==--==-- ==== Hello. I have used a TI calc some years ago, and it was very good. I had also some Casio's, from cheapest to small graphic. But, when I first had the 48G, it become my standard of a good calc. Nothing could compare to it. Even today, I won't replace it with any other calculator (even the 49G, which I already own). There are faster and more advanced toys out there, but the 48 is a VERY PROFESIONAL calculator. I am proud of it and I will be forever. As a matter of fact, I have worked along many structural engineers, civil engineers and surveyors. All of them use the 48GX. Once, I saw a team of surveyors taking meassures and doing very complex calculations with the 48GX attached to the station, and then storing all the data and results in a RAM card. After finishing the work day, they transfered the stored data to a PC or laptop, and sometimes exported them to another PC aplications. They said there is not any other calc capable of doing the job. I use and like the 49G, and its very good. I also had the TI89 some days and I disliked it. Very easy to use, surprisingly fast and good looking, but very stupid. It's good to solve a difficult integral, or to fast solving algebraic expresions, but not to make a custom application using several programs and variables. If you can't have a good use of the memory of a machine, then it is not useful (can you imagine a PC with all the files under the root directory?). On the 48GX (or the 49G) you can write a set of programs and store them under a well named directory, then separate them under several and well organized sub-directories. The best part, you can use that directory structure in the programs. A RPN program can use a variable stored anywhere and manipulate it. With my 48GX I´m sure I can do anything I need. With a TI89 I'm not so sure. And yes, the TI are very good calculators, but the 48g is better although it's older and slower. Of course, it's only my opinion. J.C. Ramos NNTP-Posting-Host: cable53a069.usuarios.retecal.es Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit ==== J Marchel escribió en el mensaje news:Icun8.72808$2q2.6153704@bin4.nnrp.aus1.giganews.com... world... and they are of the best ¿Some? ¿almost?...:-D No: better made with higher quality standars; lower production, etc... :-D. That's your dream... Raul NNTP-Posting-Host: cable53a069.usuarios.retecal.es Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit ==== R Lion escribió en el mensaje news:a7n6g7$scd$1@titan.bt.es... And te extra software, EXIST (My 48GX is better than an empty 49 :-) Raul charset=Windows-1252 Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal ==== J Marchel wrote in message news:q%tn8.71952$Gf.6463400@bin2.nnrp.aus1.giganews.com... Nikon and a lot other companies are actually copying Zeiss lenses. Go figure. -- `What a depressingly stupid machine' Detlef Mueller -- Marvin Detlef[DOT]M[AT]hamburg[DOT]de http://mein.hamburg.de/homepage/grendel NNTP-Posting-Host: cable53a069.usuarios.retecal.es Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit ==== Really, I'm amazed with Marchel's ideas about lenses quality... Raul ==== In article , J Marchel wrote: There is no glut of cheap Leica bodies and optics, which would support your claim. If I were a professional photographer, I'd not be without a leica and a nikon f2, and certain lenses. Heck, just a leica *lens* will easily sell for $1500-2000. And this is just small format stuff. The Hasselblad market might really surprise you. It's too easy to make a blanket statement of what professional photographers do and do not use. Some use digital cameras. Some use new gear. Some believe that optics quality has *declined* over the last 60 years. Pros in some fields use consumer gear because it can easily be replaced, and does not call as much attention to the photographer. Plenty of people would still just love to be given an M4. Darkroom enthusiasts still want the lenses, and they are in extremely high demand. Anyway to the topic, I keep a TI-89 in my book bag, just in case a lecturer gives a complicated example or I need to help another student. For the most part, I vastly prefer my hp48. James -- X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Message-ID: NNTP-Posting-Date: Mon, 25 Mar 2002 16:25:30 CST ==== Stephen wrote in message news:a7m7e4$66c$1@merki.connect.com.au... itself. He, he, he, remeber recent French farmers riots to maintain heavy French subsizizing of their industry ? EU has restrictions on practically every industrial product from outside EU. Just try to buy automobile that was not produced in EU. Yopu are looking int o30-40% duty fees depending on which European country you are considering. Similar practices exist in electronics, gasoline, etc. There is nothing strange, that every Jjapanese produc made in Japan is typically 30-40% cheaper in US than it is on the european market. But that is beside the point. What I had in mind was goverment guaranteed healthcare, vacation, retirement, education etc. This social benefits are generally known as socialistic and are financed by protective market practices and high taxation of citizens. I*t doesn't mean that they are bad, but they simply make European labor expensive. Jack X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Message-ID: <%KNn8.164267$1g.13535498@bin3.nnrp.aus1.giganews.com> NNTP-Posting-Date: Mon, 25 Mar 2002 16:44:11 CST ==== Stephen wrote in message news:a7m9lm$82d$1@merki.connect.com.au... with list editor Which one you are talking about ? The piece of junk MSOLVE that is not even explained in HP adanced manual ? That is one of the most unusable piece of junk programming that I've ever seen in my life. You clearly don't have TI. The numerical solver that TI has built in is as capable as HP, so the basic TI has polynominal root solver built in in that sense. Tis addition is simply better interface to the specific problem of finding roots of polynominals. But it is rather for students than for engineers. Generally they are 2D geometry applications that HP completely lacks. For general public this feature is not that important just like HP sound and time capabilities are a niche HP advantages over TI. This is a strange ommision on the TI side. Financial functionality is relatively simple to implement and it is strange TI did not included it in a base OS. But again, at least TI supports irt's product by fixing some quirks of the initial product. That was one of the strengths of HP. Not anymore. problems. True. HP commands have almost no relation to natural language so there is no need to translate english words to other languages. User has to pretty much memorize entire HP manual :-) I guess, same as language localization but specific to the Cabri geometry extension. 2? Nope. This is way beyond what HP does. would it Nonsense. You highly overrate directory structure. Jack X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Message-ID: NNTP-Posting-Date: Mon, 25 Mar 2002 16:54:19 CST ==== rcobo wrote in message If you like to change the subject of the discussion than good luck to you but I would suggest to start new thread. I'm happy, that you finally agreed that HP48 is by today standards piece of outdated junk :-) and trying to save it by repackaging it into even worse hardware (HP49) clearly did not helped HP to save the product from beign sidelined to the history. Hey. You were talking about HP48. Make up your mind, which model you are talking about ? HP49 is similar to TI. I never said that TI today is much better or worse. The problem with HP49 is that it is already hopelessly outdated hardware platform with cheap display and even worse keyboard, and it just lost it's manufacturer support, which meas it will be dead in about a year. One of the differences between us is that I'm open minded and enjoy both of them. Jack X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Message-ID: <8WNn8.53435$7b.5440046@bin7.nnrp.aus1.giganews.com> NNTP-Posting-Date: Mon, 25 Mar 2002 16:56:04 CST ==== R Lion wrote in message news:a7n6g7$scd$1@titan.bt.es... itself. ROTFL. It's a fact. I happen to have HP28, HP48SX, HP48GX, HP49 and TI92+ Jack X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Message-ID: NNTP-Posting-Date: Mon, 25 Mar 2002 16:56:48 CST ==== R Lion wrote in message news:a7n76d$spl$1@titan.bt.es... And of course you do have Geometry application, that TRI has out of the box :-) Jack X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-GC-Trace: gv1-DA5914ZzTDtqLdo+cvw8wg42tnFeSL+YtZU Message-ID: NNTP-Posting-Date: Mon, 25 Mar 2002 16:59:33 CST ==== Detlef Mueller wrote in message news:VRJn8.39$sD5.47526@news.uswest.net... figure. Really ? Why Zeiss doesn't sue them ? Such myths are popular between some white people, but the fact remains, that Japanese are now as good and in many cases the best in many areas in the world. Optics happen to be one of those. I wonder, when Zeiss will be able to produce image stbilizing optics, that Canon for example does for the several years now. http://mein.hamburg.de/homepage/grendel Jack X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-GC-Trace: gv1-EtinWFe3DxtQ6lKJqcK7exxLLndlK78NHjY Message-ID: NNTP-Posting-Date: Mon, 25 Mar 2002 17:04:18 CST ==== james mcgill wrote in message news:a7ns4q$2u7$1@slb6.atl.mindspring.net... ^^^^^^^^ And you think that is expensive ? Good Nikons are as expensive as Leica. You are misled by a cheaper lenses that Nikon makes for the amatours like Raul :-) I did not said that Nikon is absolutely the only one there. I'm sure Hasselblad and Zeiss has some products that are not that bad or in some parameters even better to the competing Nikon product. Just like HP49 has some functionality that is better than TI ;-) Jack ==== I have 3 questions about programming in RPN mode! How can I select a piece of code and copy it to somewhere else in the code? I have to output text. Can I do that without showing the stack numbers and the quotation marks arround the text? And the finished program is so huge, compared to other programs that do a lot more. (It does a simple calculation) Do I have to compile it or does it stay in ASCII format. Thanks Michael ==== Hello you can use the BEG/END/COPY/CUT/PAST keys on your calculator (Keys: G H J K and L) You can use the DISP command (FOO FOO FOO 1 DISP dispalay FOO FOO FOO on the first screen line) it gets compiled when you press the enter key. regards, Cyrille References: <388c0aa.0203280421.5a688950@posting.google.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit NNTP-Posting-Host: 208.145.205.253 X-Trace: corp.newsgroups.com 1017359659 208.145.205.253 (28 Mar 2002 17:54:19 -0600) Lines: 61 ==== Michael Frey asked: Everything that you type into the command line (or edit) is immediately compiled when you press ENTER; one exception on the 49G is when editing an existing string object with EDITB (down-arrow), which just edits and replaces the string itself. When you edit an existing program, the previously-compiled binary object is turned back into text by a decompiler; you then edit the text, and when you press ENTER it is recompiled. That's why any formatting or comments are lost every time that you edit on the calculator, except when you edit a string object; the compiler can be invoked on a string object at any time, by the OBJ-> or STR-> commands; conversely, objects can be decompiled (producing a string) by the ->STR command, or automatically by the DISP command (see below). Everything on the stack is also rendered for display by a decompiler; that's why it may take a little time to display some objects (much more noticeably on the 48 series). While you are editing the text version of your program on the 49G, you can use the keyboard-marked Begin, End, Copy, Cut, and Paste. CLLCD blanks out the display area, except for the menu line. string n DISP displays the string starting at line n (the number of available lines varies with 49G font height, the default being 1 through 7 for default font height of 8 pixels); any newlines within the string do wrap the text to the next line. 3 FREEZE tells the system not to redisplay the status area and stack contents (in the normal way, with stack level numbers) until you press another key; otherwise any displayed strings from doing the above would promptly disappear as the screen was automatically repainted by default, after your program ended or halted. Example: << CLLCD Hello, 3 DISP World! 5 DISP 3 FREEZE >> Note that the displayed message disappears as soon as another key is pressed. [r->] [OFF] -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 80,000 Newsgroups - 16 Different Servers! =----- ==== michi_frey@yahoo.com (Michael Frey) wrote in message news:<388c0aa.0203280421.5a688950@posting.google.com>... You should think about learning SystemRPL. It's very similar to UserRPL (just a little bit harder) and the programs are much smaller (and faster). AcDcP ==== I'll be a comp sci major next semester and have had a TI-89 for a year and a half now. I'm debating getting a 49G; however, I have a few questions. How long will they be available, given the HP's calculator division has been shut down? Is there anything that it can do that an 89 can't that might help with my courses (other than CS, four semesters of calculus, one of matrix algebra, and two of calculus based physics)? Does it have any stability problems? If so, does it corrupt or wipe the RAM or ROM (why I hate 86s)? To the best of my memory, my 89 has never crashed except when using some third party programs. What's available as far as 3rd party software (math, comp sci, and, of course, games)? Where can I find the latest ROM? Is there a C compiler for it? Why only 3 AAAs? What's the battery life like? How do NiMH batteries fare? TIA NNTP-Posting-Host: dirkdiggler.xs4all.nl ==== I know I can find Tetris in my 49, but can I also find some of the other games in my 49? Would be nice to have Xennon, I loved the original! Greetings, Eelco Jean-Yves Avenard wrote in message news:XeHo8.24238$uR5.53227@newsfeeds.bigpond.com... ==== Jean-Yves Avenard wrote in message news:... does the 49G has any other game except for MINEISBETTER? if it doesn't, why not? AcDcP ==== Hello AcDcP wrote in message news:9e3ab4b8.0203281841.30b3bfd3@posting.google.com... As Bill Wickes wrote: Life is short and ROM is full Jean-Yves ==== HELLO. You can't read the file because it is larger than 128 KB. It's supposed that the maximun size of a single object must be less than 128 KB, because this is the size of a memory bank. The system does not allow to have splitted objects, so, they must fit into a single bank. You can split the file in 2 separate files using the PC, then you can view it normally. Regards. Julio Cesar Ramos. ==== gtsiros@yahoo.com (George Tsiros) wrote in news:df4089c6.0203211047.962b4f4@posting.google.com: With both the TI-89 and TI-83+, Duracell Ultra Alkalines or Energizer E^2s last two to four months. However, the batteries become too weak to link and transfer files long before they totally go out (sometimes within a week or two with the 83+ in my experience). ==== Hi! Do the following: 3: '5*X+2*X^2-0.754*X^.87' @The expression 2: 'X' @The variable to solve for 1: { -10 10 } @The range of search for a root (or a real number) it returns: 1: VALUE Note: You can enter an expression with more than 1 variable, but with only 1 unknown (the others must be stored under global or local variables ) Newsgroups: comp.sys.hp48 ==== On Thu, 28 Mar 2002 22:28:45 +0100, J Marchel wrote (in message ): Come on, the US population is no scientific experiment either: this is no controlled experiment. And it is a fact that cardio-vasculary accidents are less frequent in France than in the USA. And no, I don't claim it is because of the hormon-less meat. It simply shows that you give no proof. And in any case, I will stop arguing about whether there is a health risk or not in that. The point is that since US farmers and French farmers play by the same rules, then there is no protectionist barrier. I may, when I have the time... You can also find out, that EU introduced It was a Chevy Lumina. Not legally, except in your luggages when you go abroad, and up to a very small limit. That might be possible, or you might not be aware, that Customs will not let the good go through without charging VAT and import taxes. I always pay of course. The bill shows VAT, and a small outrageous handling fee. No duty fee. Anyway the market price This is still no proof for market protection, otherwise, how do you explain the following counter example for the Yamaha Clavinova CVP-205 digital piano: - Europe : US$ 2236.75, from Belgium-based http://www.pianodepot.com/ - US $4300 best price listed for USA in http://groups.yahoo.com/group/cvpug/database?method=reportRows&tbl=6 Note: I could not find an online retailer selling that piano, but the same piano can be purchased locally here in France for less than $2300. Is my example or your example a proof of something? yes: it proves that companies have different pricing policies for different countries, which enable such things as grey markets. It doesn't say anything about duty fees. Could you, please give me European online Yes: GBP: 138.71 (Source: www.amazon.co.uk) (USD 197.45) You took the price including sales tax (LOL). But again, this proves nothing! A TI-89 list price is about 180 euros (with Graphlink). This will not prove anything. My observation is that there is still a small price difference on average in favor of USA prices. I believe that this is because the competition is less fierce for retailers, where there is no such thing as a street price, and almost everybody charges list price. This price difference is usually about 10% or so, and bears no relation with any alledged duty fee. (and yes, high VAT makes it worse, but this bears on all products, foreign and domestic). Jean-Denis Content-Transfer-Encoding: 7bit ==== I would guess that the *prototypes* were using OTP chips, but I'm sure the ROMs in the units sold to the public were just plain old ROMs. -- Aaron Ringhio wrote: ==== I wanna make the PC Link cable for HP-48GX. Where can I get the information about it?