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The Last Psion | Alex · @thelastpsion

112 followers · 170 posts · Server bitbang.social

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OK, I have no idea if I'm doing this right.

I'm trying to get the value of IO port 02h and put it into AX. So far this is what I have, based on some other code on #EDisAsm that @M0CUV wrote. My gut says that it's not right.

For full context, this is for an ASIC9-based #Psion machine (NEC V30H or V30MX, so 8086 plus a few extra opcodes). Port 02h has some info about these machines that the emulator dev needs to get info on memory mapping/addressing/mirroring.

#RetroComputing #x86asm #retrodev

#retrodev #x86asm #retrocomputing #psion #edisasm

Last updated 2 years ago

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The Last Psion | Alex · @thelastpsion

111 followers · 165 posts · Server bitbang.social

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I'm hoping this little bit of code that I'm going to throw into #EDisAsm is going to give me the value of IO port 0x02 on an ASIC9-based Psion. #TASM 4.1 doesn't hate it, so I just need to try running it on a real machine. But that's a tomorrow problem.

#RetroComputing #Psion #Series3a #Series3c #Series3mx #NECV30 #16bit #x86asm #assembly #oldtech #RetroDev #borland