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+--- Thread: Coming soon - HP-86 emulator (/thread-60037.html)
Coming soon - HP-86 emulator - John - 07-07-2004
Hi,
I am currently in e-mail contact with an HP-86 fan who is writing a HP-86 emulator. He said he has based this on an HP-71/HP-75/Capricorn emulator.
He has also produced a disassembler.
One area he is stuck on is input / output, this is very poorly described in the Assembler ROM manuals. I have heard there was a manual called something like 'Input / Output Assembler' that may help, but I have yet to see a copy.
If anyone else has an HP-85/86/87 emulator on the way it might be worth pooling ideas.
Regards,
John
Re: Coming soon - HP-86 emulator - Raymond Del Tondo - 07-07-2004
Hi,
no, I can't help you with your question.
But, you wrote :
> He said he has based this on an HP-71/HP-75/Capricorn emulator.
>
Note that the HP-71 and the HP-75 are quite different machines.
The HP-71 has the original Saturn 4bit CPU,
whereas the HP-75 has a Series 80 compatible 8bit CPU.
So an HP-75 emulator could be used as base for an HP-86,
but I doubt an HP-71 emulator would do;-)
Regards,
Raymond
Re: Coming soon - HP-86 emulator - Olivier De Smet - 07-08-2004
Hello,
Well in fact I started with a emultor for HP42s to have a nice program structure, but I rewrite all the saturn stuff as capricorn stuff.
In fact there are 2 areas where I got problems, of course the IO of the 86/87 (the rom I got thanks to John) and also the behavior of the CPU in DCB mode when non-DCB number are used. The cpu is quite complicated due to the numerous status bits not so well documented in the HP85 assembler manual.
The emulator half-works actually, I got alpha-display, keybord, I can enter lines of programs, make some basic computation but actually I CAN'T display any numerical result !!! (DCB bug, or extended controller bug I think, need more work)
Olivier
Re: Coming soon - HP-86 emulator - Andre Koppel - 07-12-2004
You may download a PDF-Scan of the HP-Series 80 I/O Assembler-Manual from http://www2.akso.de/files/hp80manuals/ASM_IO_REF_83_85.pdf
Regards
Andre
Re: Coming soon - HP-86 emulator - Vassilis Prevelakis - 07-12-2004
BTW in the PPC COMPUTER JOURNAL V3N3 (May/June 84) jim Horn mentioned that the following manuals were available for the HP-75C:
V1: ROM Description & Entry Points
V2: System Listing (Source Code)
CPU Description
These manuals were to be sold by the PPC and should provide a lot of information that is applicable to the Series 80 computers as well.
Has anybody seen these manuals?
Re: Coming soon - HP-86 emulator - Raymond Del Tondo - 07-13-2004
Hi,
keywords could be 'Jake Schwartz' and 'Philly Chapter' ;-)
IIRC, Jake used to offer the PPC CDROM archive set, too.
Raymond