Re: HP Series 80 Emulator Message #4 Posted by Olivier De Smet on 5 July 2004, 6:23 a.m., in response to message #3 by Vassilis Prevelakis
Hi,
How funny, I just started such a thing a month ago.
- First I wrote a disasembler for the roms (given by by others, I lost 2 serial moduls !!!)
- Then I started with an HP42s emulator (same as HP4x series) to write a capricorn emulator
- I used HP86 roms, so with the HP85 manuals I have some trouble for the EMC, but it progress
- Actually I got the prompt and can type some stuff, but the evaluation goes crazy ...
With the HP85 assembler manual, the state of the CPU bits (OVF, CY, LSB, MSB, ...) isn't clearly explain, I got some problem with that.
If someone have acces to a HP87 assembler manual or can give me some results for ALL binary operators for the status bits it could help A LOT !!
I have an HP86B but NO asm roms ... so it's difficults to have hint for the exact ALU behavior.
Olivier
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