Open-source Intel 486 mobo built from scratch in under 6 months for i486 chips — M8SBC-486's goal was to achieve Linux and Doom compatibility, but it achieves far more than that

A programming and electronics enthusiast created an open-source Intel 486 motherboard, the M8SBC-486, in under six months, aiming for Linux and Doom compatibility but achieving more. The project, led by Maniek86, also supports DOS, Windows 3.1, and games like Prince of Persia and Wolfenstein 3D. The board features a custom FPGA chipset, lacks non-essential functions like the secondary PIC and DMA, and has potential for further development by the community. Despite some limitations with ISA slots, the project's open-source nature invites contributions for future enhancements and custom board designs.