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No, CPU is irrelevant, even the early chipsets didnt try to invent anything and mostly implemented XT peripherals leading to universal exchangeable clone bioses
by rasz 3y ago
No, CPU is irrelevant, even the early chipsets didnt try to invent anything and mostly implemented XT peripherals leading to universal exchangeable clone bioses. OP didnt suggest otherwise, he simply mentioned author also publishes a couple open source 8088 motherboard projects:
http://www.malinov.com/Home/sergeys-projects/sergey-s-xt http://www.malinov.com/Home/sergeys-projects/sergey-s-xt
http://www.malinov.com/Home/sergeys-projects/xi-8088 http://www.malinov.com/Home/sergeys-projects/xi-8088
https://github.com/skiselev/micro_8088 https://github.com/skiselev/micro_8088
http://www.malinov.com/Home/sergeys-projects/wildcard-88-motherboard http://www.malinov.com/Home/sergeys-projects/wildcard-88-mot...
- hakfoo 3y agoThere's another project that's an interesting read at https://www.homebrew8088.com/ https://www.homebrew8088.com/. It uses almost all commodity 74xx parts, except for a 486-era keyboard controller. If you use the NEC V40, a 186-style semi-integrated CPU, you don't even need a seperate interrupt controller or timer component. Yet, it will run an off-the-shelf XT BIOS (or this BIOS) as long as you run about 10 instructions to configure the V40's onboard peripherals to live at the right ports. You can add a DMA controller, but you don't need it unless you want a floppy drive or Sound Blaster.