alfikpl/ao486
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The ao486 is an x86 compatible Verilog core implementing all features of a 486 SX.
7 mentions on Hacker News by 6 people: 1 story, 6 comments · first 2018-10-03 · latest 2026-08-02
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ao486: x86-compatible Verilog core implementing all features of a 486 SX (2014)story by csmantle · 2026-08-02 · 14 comments
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…an FPGA-Based IBM PC/XT Chipset . In contrast, here's a whole 486-class PC compatible on an FPGA: https://github.com/alfikpl/ao486
comment by userbinator · 2025-11-16 · in FPGA Based IBM-PC-XT -
…(ao486) says: "The ao486 is an x86 compatible Verilog core implementing all features of a 486 SX" https://github.com/alfikpl/ao486
comment by tyingq · 2023-03-05 · in Ao486_MiSTer: i486 core for the MiSTer FPGA gaming system -
There is a file generated by Quartus at https://github.com/alfikpl/ao486/blob/df6eba123654fdf3e3058c... I'm not sure, but it does seem mostly manual. I tend to agree that RTL is somehow particularly mind numbing. I would guess that in…
comment by anewhnaccount2 · 2023-03-05 · in Ao486_MiSTer: i486 core for the MiSTer FPGA gaming system -
One interesting 486 "machine" is the ao486: https://opencores.org/projects/ao486 https://github.com/alfikpl/ao486 I believe it is the highest version, completely open FPGA of the x86 architecture. This may be some kind of argument for…
comment by rwmj · 2022-10-26 · in Linus Torvalds suggests the 80486 architecture belongs in museum not the kernel -
There's a 486 open core under a BSD-ish license: https://github.com/alfikpl/ao486 I have this on an FPGA and it can run DOOM albeit a bit slowly.
comment by rwmj · 2021-03-10 · in An S-100 80486 CPU Board -
…games/demos. It doesn't run at a speed equivalent to a "real" 486, at least on a cheap FPGA. [1] https://github.com/alfikpl/ao486 [2] https://www.youtube.com/playlist?list=PL2QcW6r3MlDThUnC8cA-r...
comment by 0xcde4c3db · 2018-10-03 · in ARM releases free Cortex-M processor cores for FPGAs