HP Forum Archive 14

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Coming soon - HP-86 emulator Message #1 Posted by John on 7 July 2004, 4:34 p.m. 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 Message #2 Posted by Raymond Del Tondo on 7 July 2004, 5:23 p.m., in response to message #1 by John 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 Message #3 Posted by Olivier De Smet on 8 July 2004, 1:33 a.m., in response to message #2 by Raymond Del Tondo 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 Message #4 Posted by Andre Koppel on 12 July 2004, 8:13 p.m., in response to message #1 by John 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 Message #5 Posted by Vassilis Prevelakis on 12 July 2004, 11:50 p.m., in response to message #1 by John 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 Message #6 Posted by Raymond Del Tondo on 13 July 2004, 2:40 a.m., in response to message #5 by Vassilis Prevelakis Hi, keywords could be 'Jake Schwartz' and 'Philly Chapter' ;-) IIRC, Jake used to offer the PPC CDROM archive set, too. Raymond

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