frank-dino: a RP2350B helper chip for a real Zilog Z80

rh1tech (Mikhail Matveev) has released frank-dino v1.00 on GitHub, the first firmware for the dino_z80 board. An RP2350B microcontroller acts as the whole machine around a real Zilog Z84C00 CPU, so the Z80 does the work and the RP2350B handles everything else: memory, video, sound and storage. It…

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