13The Inner Workings of the Intel 8086’s Arithmetic Logic Unit https://hackaday.com/2026/01/29/the-inner-workings-of-the-intel-8086s-arithmetic-logic-unit/
#ReverseEngineering #ALU #Fpga #Intel8086
#ReverseEngineering #ALU #Fpga #Intel8086
psfThe #pasmo assembler has this really neat feature where it'll accept #z80 opcodes and then do its best to emit equivalent #Intel8086 instructions. Effectively, this is the "assembly-level" forward compatibility that Intel advertised for migrating code from 8080 to 8086.
It certainly isn't perfect - a few instructions are unimplemented and have to be manually fixed, and I'm not sure I've caught all the subtle bugs where flags behave differently ... but, here's Palo Alto TinyBasic running on #MartyPC under DOS, in only a few hours work!
Daniel Böhmer
RetroComputingMX
PiEmbSysTech
Amin Girasol
Новини Українською
Stefan Klar 
Massa 👽 Humberto
Retrópolis