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.
A-Z80 is a conceptual implementation of the venerable Zilog Z80 processor targeted to synthesize and run on a modern FPGA device. It differs from the existing (mostly Verilog) Z80 implementations in that it is designed from the ground-up through the schematics and low-level gates.
...continue reading "A Z80 From the Ground Up"
This article is about using an Altera FPGA board to generate image on a VGA monitor.
...continue reading "A Poem by FPGA"