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HP Forum Archive 08

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HP98xx Emulators?
Message #1 Posted by HPhreacker(POA, Brazil) on 29 June 2002, 7:41 p.m.

Are there any HP98xx calculator emulators? Why not to code one? The calculators seem to be very nice, but I don't want to spend my (limited) money on a international aution; and I am just a 15 year old hobbyist and HP calculator lover.

HP calculator rulez! Regards. HPhreacker - BRAZIL [<O&P>] www.hp48.tk - My site about he HP48.

      
Re: HP98xx Emulators?
Message #2 Posted by Ellis Easley on 30 June 2002, 4:30 a.m.,
in response to message #1 by HPhreacker(POA, Brazil)

I have heard (here!) that with regard to the 9825 - 35 - 45 models in particular, very little documentation concerning internal operation has leaked out of HP. It is kind of surprising since I think these models were made in very large numbers. Just recently someone was asking here for information to convert an industrial application from a 9825 to a PC. As I understand it, one thing that contributed greatly to emulators for the handhelds is that HP disclosed large portions of the HP45 ROM in a patent, which becomes public information.

            
Re: HP98xx Emulators?
Message #3 Posted by Tony Duell (UK) on 30 June 2002, 2:37 p.m.,
in response to message #2 by Ellis Easley

The HP9815 patent is a mine of information -- it included partial schematics and 5/7ths of the ROM source code (6800 assembler). The 2/7ths that are missing are the floating point routines, etc, but you do get the I/O drivers, and so on. There's even the format of the expansione ROMS! I am told the HP9825 patent at least includes the CPU instruction set and partial ROM listings. So some infromation is out there...

                  
Re: HP98xx Emulators?
Message #4 Posted by Holger Veit (DE) on 1 July 2002, 4:03 a.m.,
in response to message #3 by Tony Duell (UK)

By chance, you don't have the patent numbers for the HP9815, do you?

Regards Holger

      
Re: HP98xx Emulators - BASIC
Message #5 Posted by Andrés C. Rodríguez (Argentina) on 30 June 2002, 9:43 a.m.,
in response to message #1 by HPhreacker(POA, Brazil)

For the BASIC part, I think I have seen advertisements about a software product called HT BASIC, which allowed HP BASIC programs to be run in a PC. The company name was TransEra. All this is just from my memory, I just remember the ads. Perhaps the HP9835 - 9845 are supported.

BTW, congratulations for the FIFA Cup Brazil just won!

            
Re: HP98xx Emulators - BASIC
Message #6 Posted by HPhreacker(POA, Brazil) on 30 June 2002, 11:05 a.m.,
in response to message #5 by Andrés C. Rodríguez (Argentina)

Thank you. I will search for it... BTW, Brazil == 5x Champion ;-) -- HPhreacker - ICQ 151782344 - hphreacker irc.dal.net #brasil coerce irc.brasnet.org @#op @#ti_cas - www.hphreacker.hpg.com.br

giant password added.

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