Re:Cloning a 6502 Apple-1 in just 930 logic gates
by djmips on Sunday May 10, 2020 @02:13PM
(#23134687)
I don't really see this as similar to the way many of FPGA applications are done these days. The approach in FPGA is more along the lines of implementing the same logic as the original CPU as opposed to microcoding / emulation.
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Re:Cloning a 6502 Apple-1 in just 930 logic gates
by Koshkin on Sunday May 10, 2020 @02:46PM
(#23134955)
I guess I could be more clear. In industrial FPGA applications the goal usually isn't the CPU, the goal is to implement the required logic while keeping the number the gates needed for this to a minimum, and implementing a simple CPU (a.k.a. PSM) is what makes it possible. Same here: the CPU only serves as the economical way to implement something else (another CPU, in this case).