No offense to you, but you're a little late to the party on this thread.
And not to minimize jotego's work, but saying that he "reverse-engineered the hardware" is ridiculous. Reading the published schematics for these boards and transcribing them into VHDL or Verilog isn't reverse-engineering any more than looking at the published audio schematics for various arcade boards and transcribing them into a netlist is reverse-engineering.
What he did for CPS1 and a number of other systems? Absolutely reverse-engineering. Reading schematics? No.
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