Hackaday · Creativity & design

Minimalist 68008 Homebrew Computer Uses Only Three ICs

A new entry in the 2026 Retrocomputing Challenge, the "68k-MBC" is a homebrew computer built around the 68008 processor. A "lite" version impressively uses only three integrated circuits.

The "lite" configuration features the 68008 CPU, an SRAM chip, and a PIC microcontroller serving as ROM. This setup supports up to 512 KB of RAM and a single serial port, while still offering I2C connectivity and options for SD card storage or an RTC module.

Users can connect a terminal or a thermal printer via the serial port. A "full" version includes two serial ports, and an optional parallel adapter is available for printers with that interface.

The computer runs CP/M68K or standalone executables. Entries for the Retrocomputing Challenge close on October 27th.

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