NetNews Usenet Archive 1992 #31

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Newsgroups: comp.sys.hp48 Path: sparky!uunet!spool.mu.edu!umn.edu!lynx!triton.unm.edu!meissner From: meissner@triton.unm.edu (John Meissner) Subject: FAQ (Part 1) Message-ID: <#5prktk@lynx.unm.edu> Date: Wed, 30 Dec 92 06:09:52 GMT Organization: University of New Mexico, Albuquerque Lines: 800 Since there have been a few requests for this, and seq.uncwil.edu aeems to be unavailable, I am sending out the latest version of the FAQ that I can find. There is probably a newer version somewhere. ______________________________________________________________________________ It's time to post this again. -- Darryl Okahata Internet: darrylo@sr.hp.com DISCLAIMER: this message is the author's personal opinion and does not constitute the support, opinion or policy of Hewlett-Packard or of the little green men that have been following him all day. =============================================================================== $Header: FAQ,v 1.3 92/12/09 21:40:46 darrylo Exp $ HP 48SX Questions, Answers, & Useful Tidbits This list contains information which has not necessarily been verified, and is not guaranteed to be correct, or even reflecting reality. It was compiled from various postings in comp.sys.handhelds, as well as other sources. In particular, some parts were taken from the HP 48SX FAQ list. Also note that, while the maintainer is an employee of Hewlett- Packard, this list is not officially sanctioned by Hewlett-Packard (the maintainer is doing this on his own time, and has absolutely no connection with the HP division that makes calculators). Please send any comments or suggestions to: Darryl Okahata Internet: darrylo@sr.hp.com (official Internet address) darrylo%hpnmd@relay.hp.com (fall-back address) CompuServe: 75206,3074 Summary of questions: 1. I'm a novice, and I have some questions. Where should I start? 2. How can I tell what ROM revision I have? 3. What bugs exist in the various versions of the HP 48SX? 4. What is \->ASC or ASC\->? 5. How can I get \->ASC and \->ASC? 6. Why does my HP 48SX occasionally "freeze" for a moment? 7. Why does (1/3)*3 equal 0.999999999999? 8. I want `pi' to be a numeric value, not a symbol. What's happening? 9. If I add two temperatures like 34 deg.F and 11 deg.F, I get 504.67 deg.F. Why don't I get 45 deg.F? 10. Why do I get corrupted binary files with kermit? 11. My RAM card was plugged into the calculator when I changed the RAM card battery, yet I lost all the information on the card. What happened? 12. Why do I get an "Invalid card data" error when I merge a RAM card? 13. My HP 48SX seems to take longer to turn on and off. What's going on? 14. I can't account for some of the RAM in the HP 48SX (I can't tell where it's being used). What's going on? 15. How do I get rid of the HYDE library? 16. How can I transfer programs/data from my HP-28S to my HP 48SX? 17. I could speed up my HP-28S. How can I speed up my HP 48SX? 18. Why does the HP 48SX display flicker slightly? 19. I've heard that other manufacturer's RAM cards will work with the HP 48SX. Is this true? Will it work? 20. What library ID numbers have already been used? 21. What are the differences between the HP 48S and HP 48SX? 22. If I press ON-SPC, the HP 48SX display blanks. What going on? 23. What do the funny symbols \->, \GS+, etc., mean? 24. What tricks are there for manipulating matrices? 25. How do I store fields of variable length string data in a compact, rapidly accessible manner that does not require the overhead of storing strings in lists? 26. What is "Vectored Enter", and how do I use it? 27. How can I tell, from within a program, if the battery is low? 28. I've heard the names "RPL", "Saturn", "STAR", "Voyager", etc.. What do they mean? 29. What information is there on the internals of the HP 48SX? 30. What are the pinouts for the HP 48SX serial connector? 31. Is there any information on interfacing to the HP 48SX? 32. Where can I get programs and information for the HP 48SX? 33. How do I get access to the HP Calculator BBS? 34. What Usenet Newsgroups are there for the HP 48SX? * Appendix A: ASC\-> and \->ASC functions: * Appendix B: Using non-HP RAM cards in your HP 48SX: * Appendix C: Compact Data Storage: * Appendix D: Various useful functions =============================================================================== 1. I'm a novice, and I have some questions. Where should I start? Start by perusing the HP 48SX manuals. You'd be amazed how many questions can be answered if you read the manuals. Also, look over the section "Answers to Common Questions", in Appendix A (Volume II) of the manual. 2. How can I tell what ROM revision I have? Do the following: 1. Turn the calculator on (press ON and then release). 2. Press ON again, and hold it down. 3. While holding down the ON key, press and hold down the "D" key (the fourth white key in the top row). 4. While holding down the "D" key, release the ON key. 5. Release the "D" key. The display should be blank, with the exception of three vertical lines (one down the center, and one down each of the right and left sides). 6. Press the backspace key (it says DROP and CLR over it). A meaningless string of digits should appear in the top line of the display (mine says "705D9:1B8DA178E5A111B6" -- yours may be different). 7. Press and hold down the EVAL key. It should say: Version HP48-* Copyright HP 1989 where the * is an uppercase letter (A, B, etc.) indicating the ROM version. 8. Release the EVAL key. Hold down ON and hit "C" (the third white key in the top row. This is a general reset operation that returns the calculator to normal from the diagnostic stuff (which is where ON-D puts you). (The above was mangled from a posting by Mark Adler -- madler@tybalt.caltech.edu) 3. What bugs exist in the various versions of the HP 48SX? Version(s) Bug ---------------------------------------------------------------------- A DEFINE rounds numbers in user-defined functions if STD is not the current display mode. A KGET on a zero length file from another machine will cause the calculator memory to be cleared. A NXEQ from the Graphics Environment with flag -3 set (SYM off in Modes) can overwrite the current equation with a number. A Displaying the clock in 24-hour format causes the one-digits for minutes to be incorrect in the alarm catalog. A,B,C INV returns an incorrect result if used on an 8x8 or larger matrix. To get around this problem, divide the identity matrix with the matrix to invert. A,B,C,D Entering a symbolic complex number in polar form like '(A,<B)' (where < is really the funny little angle symbol), gives an expression in A and B that is wrong (the A and B are interchanged so A is the angle and B is the magnitude). A,B,C,D If the clock is displayed during an ARCHIVE via RS-232, there is a chance (not 100%) that calculator memory will be cleared, after the transfer. The workaround is to turn the clock display off before doing the transfer. Should memory be cleared, you will have to restore the contents of memory from the archive. A,B,C,D TRNC and RND allow for an array in level 2 and a symbolic in level 1 of the stack. This allows you to put an array in a symbolic. Example: [ 2 3 ] '7/8' RND returns 'RND(UNKNOWN,7/8)' (The above was mostly copied from postings by Mark Adler (madler@tybalt.caltech.edu) or Jurjen NE Bos (jurjen@cwi.nl).) 4. What is \->ASC or ASC\->? These functions were written by William Wickes to facilitate transferring HP 48SX binary objects in an ASCII format (useful when transferring objects via electronic mail or bulletin boards). Some HP 48SX objects, like libraries, cannot normally be converted into ASCII, unlike program objects, and these functions make it possible to do so. The \->ASC function converts the object in level 1 into an ASCII string, which can then be uploaded to a computer for mailing. The ASC\-> function converts the string object in level 1 back into an object. A checksum is used to insure that the decoding is correct. 5. How can I get \->ASC and \->ASC? A copy of these programs are given in Appendix A, near the end of this file. 6. Why does my HP 48SX occasionally "freeze" for a moment? The HP 48SX must occasionally do "garbage collection" to free up unused memory, and it is this garbage collection that is causing the momentary "freeze". "Garbage collection" is where the HP 48SX scans through memory, looking for objects that are no longer used. Using less stack supposedly makes garbage collection go faster. 7. Why does (1/3)*3 equal 0.999999999999? This is due to the way numbers are typically represented by computers and calculators. There are infinitely many numbers, like `1/3' and `pi', that cannot be exactly represented internally (their decimal representations go on forever, and oftentimes cannot even be represented as a fraction, as in the example of `pi'). As a result, any calculations that use these numbers are bound to be off. 8. I want `pi' to be a numeric value, not a symbol. What's happening? You are using "Symbolic Results Mode". To turn this mode on or off, go to the MODES menu (press orange/left-shift MODES), and press the "SYM" softkey. 9. If I add two temperatures like 34 deg.F and 11 deg.F, I get 504.67 deg.F. Why don't I get 45 deg.F? If the units attached to the number consists only of a temperature and nothing else, operations are done using an absolute temperature scale (relative to absolute zero). If the units consists of a temperature and something else, such as degrees/minute, the operation will not be done using an absolute temperature scale. It also does not make any physical sense to add two temperatures. You can't add a cup of water at 20 degrees C to a cup of water at 30 degrees C and end up with two cups of water at 50 degrees C. 10. Why do I get corrupted binary files with kermit? Some versions of kermit distinguish between ASCII and binary files, and so you have to worry about the transfer modes at *BOTH* ends of the connection (the HP 48SX end and the computer end). For example, when receiving ASCII files, Unix kermit must translate CR/LF pairs into LF. If the HP 48SX is transmitting a binary file, but the Unix kermit is expecting ASCII, any CR/LF pairs in the binary file will get translated to LF, corrupting the binary file. Unfortunately, you cannot "uncorrupt" the corrupted binary file by simply reversing the transfer and expecting kermit to translate LF to CR/LF. This is because the binary file may contain occurrences of LF that were not originally part of a CR/LF sequence. Kermit running on IBM PC clones do not have to translate any incoming CR/LF pairs, which is why you do not see this problem there. 11. My RAM card was plugged into the calculator when I changed the RAM card battery, yet I lost all the information on the card. What happened? You forgot to turn ON the calculator before changing the battery. The HP 48SX only supplies power to the RAM card while the HP 48SX is turned on. While the calculator is turned off, no power is supplied by the calculator, and all power comes from the RAM card battery. If you then take out the battery from the RAM card while the calculator is turned OFF, the RAM card has no source of power, and you will lose all of the contents in the RAM card. 12. Why do I get an "Invalid card data" error when I merge a RAM card? This message is usually seen when you plug a brand-new RAM card into an HP 48SX. In this case, this message is normal and is harmless. It just means that there was no (valid) data on the card. If you see this message under any other conditions, it could be one of the following: 1. You took the battery out of the RAM card while the card was out of the calculator. 2. You took the battery out of the RAM card while the card was in the calculator *BUT* the calculator was turned off. Note that the calculator supplies power to the RAM card ONLY when the calculator is turned *ON*. 3. The RAM card battery is dead. 4. There is a problem with either the calculator, the RAM card, or both. 13. My HP 48SX seems to take longer to turn on and off. What's going on? The usual causes for this are RAM/ROM cards and libraries. When you turn the calculator on, it checks RAM (the more you have, the longer it takes), and checks to see if any libraries need initializing. Also, having a lot of alarms can supposedly also cause this. 14. I can't account for some of the RAM in the HP 48SX (I can't tell where it's being used). What's going on? It can be any one of a number of things: --------------------------------------------------------------------------- Enabling the use of LAST STACK, LAST ARG, LAST CMD, etc., uses up extra RAM, as the calculator has to keep track of the last stack, arguments, command, etc.. This is particularly important with LAST STACK if you have a large/complex stack, as the HP 48SX has to keep enough information around to recreate the stack after each operation. You can clear out these variables by pressing ON-C (but also note that this will clear out the stack, the graphics PICT, etc.). --------------------------------------------------------------------------- From billw@hpcvra.CV.HP.COM Fri Mar 1 17:00:00 1991 From: billw@hpcvra.CV.HP.COM (William C Wickes) Date: Wed, 1 Aug 1990 19:51:37 GMT Subject: DOERR: An HP48SX memory eater Organization: Hewlett-Packard Co., Corvallis, OR, USA Newsgroups: comp.sys.handhelds Here's a candidate for "most obscure way to use up memory on the HP 48SX." When a program executes DOERR with a string argument, the string and hence the program too if the string is embedded in the program are referenced for the sake of the ERRM command. Thus if you purge the program, the memory used by the program is not reclaimed until the ERRM reference is updated to a new string. If the string is in a port, you will get the Object In Use error if you try to purge the library or backup object containing the string. A system halt prior to a PURGE will not help unless the object is in port 1 or port 2 (it will reclaim memory held by a successfully purged but still referenced object). For port 0 objects, the only way to break the reference is to execute DOERR again with a new string. --------------------------------------------------------------------------- 15. How do I get rid of the HYDE library? Getting rid of the HYDE library can be fun. Here's how to do it: 1. Go the HOME directory. 2. Press left-shift (orange) LIBRARY. The calculator is now displaying a menu of libraries attached to the HOME directory. 3. Press the menu key that says "STRA". You are now accessing the HYDE library. 4. Press the menu key that says "JEKY". You have now disabled the HYDE library and restored the old (standard) set of messages. 5. Make sure that a pointer to the library is not on the stack. The easiest way to do this is to clear the stack using CLR. 6. Detach the library using: :0:998 DETACH 7. Purge the library using: :0:998 PURGE When you execute the PURGE, the screen will "jump" or "be messed up" for a brief moment. Don't worry about it -- it doesn't hurt. 16. How can I transfer programs/data from my HP-28S to my HP 48SX? You use a program called "INPRT", which is available from various archives, and is also included in the IBM-version of the HP 48SX serial cable kit and in the Program Development Library. For each program that you want to transfer, you use the HP 28S to print it to the I/R output; INPRT, running on the HP 48SX, reads the I/R output of the HP 28S and converts it into a program. 17. I could speed up my HP-28S. How can I speed up my HP 48SX? You can't, really. Unlike the HP-28S, the clock speed in the HP 48SX is hardwired to 2 MHz. However, in some cases, you can speed up the HP 48SX by turning off the display refresh, which supposedly takes up about 11% of the CPU time. Detlef Mueller <detlef@mwhh.hanse.de> submitted a program to comp.sources.hp48 that turns off the display refresh. Look in the various HP 48SX archives for a copy. 18. Why does the HP 48SX display flicker slightly? Display flicker is usually caused by fluorescent lights. The rapid pulsing of the fluorescent lights (60Hz in the U.S.), which is normally unnoticeable, interacts with the rapid pulsing/scanning of the HP 48SX LCD display (64 Hz refresh rate), which is also normally unnoticeable. The 60Hz fluorescent lights alias with the display refresh (64Hz) to produce a 4Hz "flicker". It's normal and harmless. Outside the U.S., power is supplied at a 50Hz rate, not 60Hz. This means that the display would "flicker" at a 14Hz rate, which may or may not be noticeable (I'm in the U.S. and cannot verify this -- if anyone living in an area with 50Hz power, I'd appreciate it if you could prove or disprove this). 19. I've heard that other manufacturer's RAM cards will work with the HP 48SX. Is this true? Will it work? While some cards may work, there is a chance that you may severely damage your HP 48SX. You should only use cards specifically designed for the HP 48SX. For more information, see Appendix B, "Using non-HP RAM cards in your HP 48SX", near the end of this file. 20. What library ID numbers have already been used? The following was taken (without permission) from a comp.sys.handhelds posting by Joseph K. Horn (akcs.joehorn@hpcvbbs.UUCP), June 2, 1992. =========================================================================== From akcs.joehorn@hpcvbbs.cv.hp.com Mon Jun 1 23:40:04 1992 From: akcs.joehorn@hpcvbbs.cv.hp.com (Joseph K. Horn) Date: Tue, 2 Jun 1992 06:40:04 GMT Subject: Library ID's Currently In Use Newsgroups: comp.sys.hp48 HP 48 LIBRARY ID'S CURRENTLY IN USE 1 JUNE 1992 Unofficial List -- Corresponds to Reality Compiled by Joseph K. Horn ID BYTES #CRC REVIEW Name (comment) Where Available ---- --------- ---- ----------------------------- ------------------- 0014 135.0 5329 X.PUB :Configs Aborter HORN7:FRANCE 0262 105,307.5 4B6E DEMO :Demo Start 0.0 EduCALC #80024 0262 125.5 6AD9 (powerup -> warmstart) HORN7:UTILS 0266 4,209.0 0414 (Catalog Utility) \ 0267 70,074.5 40CC (Equation Reference) \ 0268 6,926.5 F89F UTILS :Utilities \ 0269 6,131.5 1BD9 MES :Mult Eqn Solver \ EduCALC 0270 3,184.0 7022 FIN :Finance / #82211A 0271 3,751.5 E1F1 COLIB :Constants Libr / 0272 27,391.5 7922 PRTBL :Periodic Table / 0273 7,168.0 0580 EQLIB :Equation Libr / 0501 4,393.5 83C9 CLK HORN3 0752 2,203.5 7A6A PDLXFER PDL Xfer Util EduCALC #82208B 0765 5,145.5 EB7F CATLIB:Catalog Library HPCVBBS 0766 1,221.0 7C4D EPPRT :Graphic->Epson A EduCALC #82208 &9 0767 1,127.5 FEE2 HPPRT :Graphic->PCL A EduCALC #82208 &9 0768 2,822.5 706C SW-A (stopwatch) EduCALC #82208 &9 0769 32,761.5 9703 CAS48: Casino 48S 1.02 EduCALC #2259 0769 2,862.0 49FA TETRIS:1.3,(c)DM'91 HORN6:GAMES 0769 8,277.0 3FF2 DB48 (Data Base v2.11) HORN5:WORK 0769 8,984.5 E2CB DB48 (Data Base v2.30) HORN7:WORK 0770 9,597.5 3DF0 (PIM Utils & Data Browser) EduCALC #2323 0771 111,436.5 9589 EEREF :EE Reference EduCALC #2293 0772 117,511.5 8CE8 EEAPP :EE Application EduCALC #2292 0773 23,124.0 01CF PIM :Pers Info Mgr EduCALC #2323 0774 113,708.0 FF57 MEREF :ME Reference EduCALC #2291 0775 6,007.0 3BEE FCLIB :Flag Catalog EduCALC #2283, 2284 0775 6,409.5 2665 ECHR (Character catalog) HORN7:PROGRAMR 0776 9,407.5 AEFF TLLIB :Tool Library (ver B) EduCALC #2283, 2284 0776 8,424.5 4B46 (Short Tool Library) (commercial cards) 0777 3,746.5 8512 TBLIB :Title Browser EduCALC #2283, 2284 0777 3,704.0 ???? (Short Title Browser) (commercial cards) 0777 10,406.0 ???? (TenK Game) HPCVBBS 0778 4,787.0 1D26 DBLIB :Data Browser EduCALC #2283, 2284 0782 116,317.5 5EF0 MEAPP :ME Application EduCALC #2290 0783 117,627.0 425D GCAPP :GC Application EduCALC #2294 0784 126,049.0 463C GCREF: GC Reference EduCALC #2295 0785 117,053.0 0488 MATH :Mathematics EduCALC #2324 0786 4,745.5 6BED (Short Data Browser) (commercial cards) 0799 4,277.0 3B00 TIMER.APPLICATIONS HORN6:WORK 0800 39,509.5 58EB util (used by STRUCT) \ EduCALC 0801 90,479.5 6B47 STRUCT (TDS card) / #2487 0803 2,073.5 B8AB SWITCH (bank switcher) EduCALC #2365 etc. 0804 10,730.5 AE71 finutil (used by TDSFIN) \ EduCALC #2365, 0805 14,300.5 99EC TDSFIN (financial tools) / 2475, 2476, 2482 0807 3,700.5 8F69 ROLDX :Rolodex ver 1.0 HORN1, HORN2 0809 269.5 6D06 MSGTST: v0.0,DM'91 HORN6:HACKER 0810 91,634.0 49E1 EZ (E.Z. Math Card) EduCALC #2443 0817 65,248.0 7185 SPC48 (State Plane Coord) SMI 0820 10,238.0 4390 VADERS (Space Invaders game) HORN7:GAMES 0821 25,305.0 ???? SmartROM 1991 Flavio Casetta \ EduCALC 0822 4,706.0 ???? Matrix Writer Plus / #2574 0825 4,708.0 00E5 FILER : Memory Filer Brian Maguire 0826 4,170.5 13E4 ARYTL: Array Tools Brian Maguire 0826 2,588.5 4653 CTBL : Character Table Brian Maguire 0827 7,292.0 BFE8 UITOOLS:User Infc. Tools Brian Maguire 0828 9,122.5 251D OBJTL: Object Tools Brian Maguire 0829 2,576.5 4720 META : Meta-Objects Brian Maguire 0830 56,350.0 E47A SRPL :System RPL Tools Brian Maguire 0830 5,002.5 E33A PAINT : Graphic Appl. Brian Maguire 0832 8,502.5 520C FMGR :File Manager EduCALC #2474 0834 8,427.0 1E67 (browser utilities?) (commercial cards) 0839 95,837.5 ???? SPICE48: Ckt. Simulator EduCALC #2589 0841 5,027.0 A1A9 DL+ CH.D 91 HORN7:FRANCE 0845 116,240.0 ???? SSELE :Solid State EduCALC #2590 0850 33,805.5 FF5B CONST1 Mike Seidl (SMI) 0858 28,673.5 FC38 Zephyr Games Pak I SMI 0873 1,768.5 1D9D GATEWAY-48 HORN3 0873 2,192.0 20F3 GATEWAY-48 HORN7:UTILS 0873 1,932.0 18C4 Code-Lock HORN7:UTILS 0874 8,327.5 E262 FMLIB :File Manager EduCALC #2474 0874 3,782.0 36B5 REVERSI HORN7:GAMES 0876 ? ???? DB48LB:Database James Donnelly 0880 4,117.5 DFD1 ASM Library 0.0 E HORN7:FRANCE 0880 4,231.0 AD9C TLBOX :ToolBox 1.0A HORN7:FRANCE 0888 9,401.5 13C0 PTE Periodic Table v1 HORN6:WORK 0898 19,617.5 4609 DASM_V1.0 HORN3 0900 701.5 37C6 HSTACK: Hyper Stack V1.1 HORN7:UTILS 0910 75,441.0 ???? Sun Finder Scott Ferry 0911 ? ???? (under development) Scott Ferry 0912 8,688.0 B8E3 TRON (Paris, 1991) HORN7:FRANCE 0960 2,185.5 9C15 MIND (4 columns, 6 colors) HORN7:GAMES 0960 2,109.5 AD53 MIND (5 columns, 8 colors) HORN7:GAMES 0960 4,405.5 1AB1 MIND (both of the above) HORN7:GAMES 0961 ? ???? ALGB (math & matrix routines) ? 0968 11,139.5 CFB9 ANT (game w/ SCHIP) HORN5:GAMES 0998 3,679.5 5FAE Strange Case 998 (JEKYL/HYDE) HORN2:DNICKEL 1000 10,166.0 72D3 POKR :HP-48 POKER 1.0 HORN7:GAMES 1001 42,559.0 ???? DANCER (animated striptease) ? 1011 2,191.0 F931 Fraction HORN7:MATH 1012 3,752.5 F6E7 (CRASH library, unnamed) HORN5:HACKER 1013 1,811.5 5CC7 Matrix HORN7:MATH 1030 32,759.5 1AF6 48BC (SMI) EduCALC #2296 1030 66,741.0 491E 48SC (SMI) EduCALC #2298 1030 98,285.0 1A8E 48AC (SMI) EduCALC #2299 1031 2,933.5 0CD6 iNB :0.02j 910718 HORN7:WORK 1031 5,828.5 4229 DITCH (SMI) \ 1032 7,629.0 4378 HYDRA (SMI) \ 1033 1,662.5 EF50 EARTH (SMI) > EduCALC #2297 1034 2,729.0 0E59 HORC (SMI) / 1035 3,271.0 F029 VERT (SMI) / 1092 6,930.0 6411 Saturn MLDL a1.01 HORN3 1092 10,734.0 BB75 MLDL 1.04B EduCALC #2359 1092 10,745.0 2491 MLDL 1.05B EduCALC #2359 1093 ? ???? Poker 1.01 (game) ? 1101 1,011.5 FC15 TLORG: TLLIB organizer HORN5:PROGRAMR 1111 7,602.0 F5FB Garbage (Sokoban; Box Jockey) HORN6:GAMES 1200 5,958.0 53A2 LIBMKR:Library Maker + HORN7:FRANCE 1201 6,213.5 3FC4 PACMAN:BOUHP Version HORN7:FRANCE 1210 10,541.0 50BF DBUG :HP UnAssembler HORN7:FRANCE 1214 2,712.0 F675 HACKIT (v 1.04) HORN3 1214 3,021.0 9F5B HACKIT (v 2.04) HORN5:HACKER 1214 3,168.0 B8DF HACKIT (v 2.05) HORN7:HACKER 1220 2,373.0 793A HP<->HP FAST LINK HORN7:FRANCE 1221 5,033.5 14C2 <-LIB-> :1.3,(c)DM&RH'92 HORN7:HACKER 1314 4,313.5 2120 BMXL Binary Matrix Algebra HORN6:MATH 1402 n/a n/a HP-41C Emulator card EduCALC #82210A 1402 3,026.5 82E3 Bode HORN7:WORK 1403 n/a n/a HP-41C Emulator card EduCALC #82210A 1403 4,906.5 C25F Biport HORN7:WORK 1404 n/a n/a HP-41C Emulator card EduCALC #82210A 1424 4,152.5 405C COPY-ROM HORN5:UTILS 1433 5,664.5 09B0 Chip 48 (collection) HORN3 1433 2,648.0 AE3A Rat Rational Number Package HORN3 1531 91.0 D371 (bare-bones :&:AUTOEXEC) HORN7:UTILS 1537 ? ???? FRACT :Fraction Units Joseph K. Horn 1616 2,999.0 8D01 SMTK: SmartKeys by RAP HORN7:UTILS 1617 495.5 421F Complex FACT HORN3 1644 ? ???? (SWING directory browser) HPCVBBS 1671 3,278.5 9AA8 FCTR 1.2 Factoring HORN7:MATH 1672 12,161.5 F3F4 NTL2 2.8 Number Theory HORN7:MATH 1696 2,448.0 8191 UTIL:C Brian Walsh HORN2 1697 1,566.5 DC1E List:B Brian Walsh ? 1700 2,703.5 EFC3 TETRIS (ML version) HORN3 1785 4,665.0 4275 TIMER LIB HORN6:WORK 1786 29,070.5 2622 FLIGHT LIB HORN6:WORK 1791 8,436.0 93CD TOOLS System Utilities HORN2 1791 13,519.0 0141 CSINO PLUS (Demo) HORN7:GAMES 1793 275.0 331C IF ERROR (ver. A) HORN2 1793 434.0 9CA1 IF ERROR ver. B HORN3 1795 1,017.0 B2AB (LIB1795, Programmer's tools) HORN7:FRANCE 2000 124.5 97F9 (Runs AUTOEXEC at warmstart) HORN7:UTILS 2046 n/a n/a HP-41C Emulator card EduCALC #82210A ---- --------- ---------------------------------- ------------------- BYTES and CRC are calculated by the HP 48 BYTES command on the library object itself, not its name. The 41 Emulator Card's libraries are not proper RPL objects. Their size and CRC cannot be computed by the BYTES command. +---------------------------------------------------+ | HP 48 Resource Allocation Guideline: Library ID's | +---------------------------------------------------+ | 0000 - 0256 Take-over libraries; do not use! | | 0257 - 0512 HP ROM-based libraries; do not use! | | 0513 - 0768 HP RAM-based libraries; do not use! | | 0769 - 1536 3rd Party (assigned by HP) | | 1537 - 1792 3rd Party (assigned by HP) | | 1793 - 2047 Command-line; do not use! | +---------------------------------------------------+ Note: EduCALC #'s are Stock Numbers; for further info call EduCALC at (800) 677-7001 or (714) 582-2637, Mon-Fri 8am-5pm California Time. Info about all other libraries is available on HP's free BBS: (503) 750-4448, 24 hr, 300/1200/2400 baud, full duplex, no parity, 8 bits, 1 stop bit. Follow displayed instructions carefully. Anonymous ftp users will also find almost everything ever written at seq.uncwil.edu, 128.109.221.20. -Joseph K. Horn- -Peripheral Vision, Ltd.- =========================================================================== 21. What are the differences between the HP 48S and HP 48SX? The HP 48S is the same as the HP 48SX except that the HP 48S does not have the two expansion slots of the HP 48SX. This means that the HP 48S cannot be expanded and can only access 32K of memory, versus 288K for the HP 48SX (two 128K RAM cards). (Actually, there are now third-party RAM cards that contain 256K or 512K on a single card -- this memory is accessed via a bank-switching mechanism.) If you plan on heavily using your calculator, you will probably find that 32K is not enough memory. 22. If I press ON-SPC, the HP 48SX display blanks. What going on? Pressing ON-SPC places the HP 48SX into "coma mode", where the internal clock, alarms, etc. are turned off. Normally, when you simply turn off the HP 48SX, the internal clock continues to run, and any alarms will go off at their specified time. This draws a very tiny amount of current from the batteries (just like a digital watch). This amount is much, much smaller than the amount drawn when the calculator is turned on, where the CPU, display, etc. must be powered. Pressing ON-SPC not only turns the calculator off, but it also turns off the internal clock, alarms, etc., which stops the calculator from drawing the very small amount of current it normally draws when turned off. This mode, which is known as "coma mode", was designed to increase the life of the batteries in an unpurchased calculator (placing the calculator in coma mode prevents it from drawing any current to power for the clock, etc., which increases the life of the batteries). 23. What do the funny symbols \->, \GS+, etc., mean? These are the ASCII representation of the special HP 48SX graphical characters. See the section "Character Translations" in Chapter 33 (Volume II) of the manual for a table of symbols <--> ASCII representations. 24. What tricks are there for manipulating matrices? You can build up a matrix by rows using \GS+ You can take a matrix apart by rows using \GS- 25. How do I store fields of variable length string data in a compact, rapidly accessible manner that does not require the overhead of storing strings in lists? See Appendix C, "Compact Data Storage", near the end of this file. 26. What is "Vectored Enter", and how do I use it? From billw@hpcvra.CV.HP.COM Fri Mar 1 17:00:00 1991 From: billw@hpcvra.CV.HP.COM (William C Wickes) Date: Mon, 12 Mar 1990 21:21:55 GMT Subject: HP 48SX Vectored Enter Organization: Hewlett-Packard Co., Corvallis, OR, USA Newsgroups: comp.sys.handhelds The HP 48SX manuals do not document a very powerful feature that we call "Vectored ENTER," that allows you in effect to redefine or bypass the command line parser and to have a shot at the stack etc. after the command line has been executed. Keys that execute an automatic ENTER perform a two-step process: 1. The command line is parsed and evaluated. 2. The key definition is executed. When flags -62 and -63 are both set, the system extends this process as follows: 1. The current path is searched for a global variable named *aENTER (here "*a" is the Greek alpha character--character 140). If present, the command line is entered as a string object and *aENTER is executed. If absent, the command line is parsed and evaluated normally. 2. The key definition is executed. 3. The current path is searched for a global variable named *bENTER ("*b" is Greek beta--character 223). If present, then a string representing the key definition is put on the stack, and *bENTER is executed. The string is the key definition object's name if it is a command, XLIB name, global or local name, or an empty string for other object types; its primary purpose is to implement things like the TRACE mode on other calcs, where you can print a running record of what you do. A simple example of the use of *aENTER is to create a more convenient binary calculator, where *aENTER slaps a "#" on the front of the command line so you don't have to bother when entering numbers. 27. How can I tell, from within a program, if the battery is low? Preston Brown (prestonb@hpcvra.CV.HP.COM) posted the following: The following 48SX program reports the status of the ALERT annunciator. The ALERT annunciator is activated by alarms or low battery. This program is provided free of charge "as is" and has no warranty. No one is liable for any consequential damages. Preston %%HP:T(3)A(D)F(.); \<< RCLF 8 STWS #FFh #0h + #10Bh #6595Ah SYSEVAL #8h AND #0h > SWAP STOF \>> 28. I've heard the names "RPL", "Saturn", "STAR", "Voyager", etc.. What do they mean? ASAP This is a simple Saturn assembler, written in the Perl language. Chip8, Chip48, Schip, Schip8 This is a machine-code program that was inspired by the chip8 video game interpreter for the RCA CDP1802 microprocessor several years back. Chip8 allows you to write a simple graphics-based video game for the HP 48SX. Among the games written are "clones" of breakout, pacman, and pong, to name a few (about half?). Chip48, Schip and Schip8 are two different names for an enhanced version of chip8 specifically designed for the HP 48SX. People have written programs to assemble Schip assembly language into a form directly usable by Schip on an HP 48SX. HYDE This is the "HYDE" library, whose only purpose is to change the error messages in the HP 48SX to make it "user unfriendly". ML Machine Language. This is usually used in reference to HP 48SX assembly language programming. MLDL Machine Language Development Library. This is a library, which is still under development, that allows you to debug machine language programs with only an HP 48SX. PDL "Program Development Link". This is an MSDOS program, sold by Hewlett-Packard, that allows you to write and develop HP 48SX applications from your IBM PC clone. Programs are written on your PC, transferred to the HP 48SX, and tested from your *PC* (and *not* the HP 48SX). RPL RPL is the name of the language used to program the HP 48SX and HP-28 series calculators. RPL stands for "Reverse Polish Lisp". It's interesting to note that an HP Journal article incorrectly described RPL as "ROM-based Procedural Language". SASS SASS is a simple Saturn assembler, written in C/yacc (BSD Unix & Bison). It uses Alonzo Gariepy's mnemonics.