Baltazar Studios: The A-Z80 CPU

This article contains a brief overview and a background of the A-Z80 CPU created for FPGA boards and a ZX Spectrum implementation tied to it.

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YouTube: Sinclair ZX Spectrum games on Altera FPGA

github.com/gdevic/A-Z80 An implementation of the Z80 CPU for Altera, Xilinx and Lattice FPGAs