B249 Yes, I have a HP 49+. I couldn't figure out how to load either program. Could I possibly type in an equation and save it ? Do you know how I could ? Mike the Rat SCRIBE and EQLIB+ are libraries, not programs. You may need to do a little reference work to understand the difference. Also, for what follows, you should be in RPN mode, not algebraic mode. This can all be done in algebraic mode, but I never use it so I don't know the exact details. Press the MOD key (row 2 col 2), set operating mode to RPN, then press ENTER. To type in an equation and save it is easy. For example, type in 'X^2+Y^2=R^2' then type in PYTH and press the STO key (third row from the top and second column from the left). You not have that equation saved under the name 'PYTH'. Press the VAR key (row 3, col 1) and you should see PYTH in one of the dark boxes on the screen. Presing the row 1 key underneath PYTH will recall the equation. Yes, just enter it in the equation writer (RS '). After you're done writing the equation, press ENTER to exit the editor. Then type the name you want to give the eq and press STO. Bob Sorry, there aren't spheres, there are less than half sphere under each key (en efecto cazco esf.8erico). JoGa posting-account=QMmFgA0AAAAFQmAqcXBNtjxAbGNd_eLq I loaded and RESTOed my backup {HOME} directory from my PC to the calculator. When I tried to purge a specific object from a subdirectory the calculator would either freeze or memory clear. I tried to store something different in the object's name - again it would crash. I loaded the backup HOME on emu48 with MK aboard (my real offending subdirectory. I wish to have what is left to be my current backup HOME, stored both on the PC as backup and actively on the real calc. I can - 1.Use EDIT-Load/Save to move objects back and forth between emu48 and the PC. 2.transfer files directly between emu48 and the calc. 3.Create a backup HOME using :IO:name and ARCHI 4.Ditto, using a :portnumber:name However- I am unable to get the emu to transfer the new backup HOME either to the PC or the calc in such a format that will enable me to RESTO it as a {HOME}. The best I can come up with is getting a new subdirectory in HOME on the calc, the contents of which are what I desire to be the actual HOME, not its subdirectory. I apologize for being longwinded for what seems like a simple problem - In light of the nature of some prior posts I am striving for clarity at the expense of brevity on this occasion. Bill That's funny. The analog clock was designed one day in the MetaKernel on the 48GX ; the main constraint was size (it's less than 200 bytes) and even if the display changes only every 5 minutes it is still being displayed every seconds so it has to be very fast. Jean-Yves Could be possible to control e transfer files to a HP 48 gII calculator on a PC running Linux, 'cause even on M$ Windows I cound't transfer. Davi Braga davibraga@gmail.com Sophist. Sure, so long as the C programs that manipulate it don't load the entire data structure at once. You can easily write a C program that uses a suitable algorithm to manipulate such data. However, the code would be a bit ugly. Eventually, I'd like to see paging from a swap file on the SD card, but that's a ways down the road. -- www.designacourse.com The Easiest Way To Train Anyone... Anywhere. Chris Smith - Lead Software Developer/Technical Trainer MindIQ Corporation it is *still* cheaper to use the entire base True. I understand that it was designed long ago, for HP's requirements. There is a huge code-base for it that is infeasible to rewrite. That doesn't change the fact that it is (IMO) a horrible CPU by todays standards. Al I guess you must Rap the numbers out. I would not consider voiding the Guarantee by sneaking into the unit and building up the Key Mountings as long as you can get If it costs 'em Perhaps they will learn. I truly appreciate a quality input. My favorite Keys live on a 1970's H/P frequency Synthesizer. They are Heavy, Very smooth, and operate with an unusualy long travel (Perhaps more than 3/8) They make a Thock noise when punched. It's a very satisfying input. I think the're rather better even than the IBM Whicky-Whack P.C.-AT Keyboards I had a contract at an automotive facility which had a Chassis door test running down the hallway. That crew really worked hard to slam the doors right off a Subaru sedan. Most Calculators seem to use a floating key positioned over bubbled Silicon contacts. Do you Suppose Kimpo needs a Button-cycling machine for detent style keys? I don't know what you mean by program emulator, but the only feasible solution is the Saturn emulator. The Saturn is a pretty simple CPU, and you need full Saturn asm compatibility (including bugs and all) to be sure all existing programs work as expected. The most simple way to achieve full Saturn asm compatibility, is with a Saturn emulator. It works fine. On many CPUs (x86 for instance) you shift between execution modes in your program. It's not much different form this. I doubt it, but I haven't tried. It would be a huge undertaking anyway. If you want to write an OS from scratch, the original OS source would probably be more confusing than helping. But you could forget about backwards compatibility. A better way would be to gradually implement more and more features in ARM asm (coded in C preferably) - the plotter app for example. These could bypass the existing emulated ones. For it to be perfect, the existing emulated features should be removed from the ROM (to save space) and entry points to the new ARM asm code inserted (for convenience). I think we'd run out of space though. ARM asm code is huge, because none of the existing code can be reused - almost everything has to be rewritten from scratch. Steen Libraries are to be installed in a port. You don't want a name on the stack when storing, but instead a number. Usually port 2 is best, since port 0 take up precious HOME space, and port 1 is used for the extable (on my calc anyway ;-). So do 2 STO with the lib on the stack, and then do a warmstart (ON-C). When the calc has completely rebooted, your lib is available through the library menu (and anywhere else it's supposed to be available - the apps list for instance). It's not enough to merely powercycle the calc (turning it OFF, then ON). That won't attach the lib. Some libs require manual attachment to a directory, but this should be explained in the manual to the lib. Steen Now I've just installed Formo from hpcalc.org, and it functions exactly as written above. It's a bit of an annoying program though - changing flags globally and all :-) Steen