Main website: https://www.thebyteattic.com/p/cerberus-2100.html

Github: https://github.com/TheByteAttic/CERBERUS2100

IEEE Spectrum article: https://spectrum.ieee.org/dual-6502-z80-programmable-architecture

CERBERUS 2100™ is an educational multi-processor 8-bit computer, featuring both Z80 and 6502 CPUs, plus an AVR processor as I/O controller. Built with CPLDs, CERBERUS 2100™ is fully programmable even with respect to its hardware, at the level of individual gates and flip-flops. It runs BASIC interpreters for both CPUs, but can also be used in a 'bare metal' mode through its built-in BIOS. It can even be extended through its expansion slot, which comes paired with a powerful, generic communications protocol that allows for Direct Memory Access (DMA).

CERBERUS 2100™ comes with two BASIC interpreters built-in: BBC BASIC for the Z80, and Microsoft BASIC for the 6502.