Impressive work.
If I could say *anything* critical, and mind you, it isn't a real criticism, I was sort of vaguely hoping the project might go the other direction (from using an FPGA) and use more old-fashioned through-hole discrete components (IE, a real 68000, a pair of 6522s, etc, etc.) There'd be the problem of duplicating the PALs, of course, and possibly some related issues with component scarcity. (Perhaps the PALs could either be rolled into a CPLD or two, or unrolled into discrete components, although the latter might make for an unwieldy PCB board.)
Using the FPGA is undoubtedly the "right" choice, there's just a certain ring to the idea of making a machine that duplicates the original a little more closely in all its glorious hardware-shortcut-y obscureness in a way that's visible to the naked eye.
If I could say *anything* critical, and mind you, it isn't a real criticism, I was sort of vaguely hoping the project might go the other direction (from using an FPGA) and use more old-fashioned through-hole discrete components (IE, a real 68000, a pair of 6522s, etc, etc.) There'd be the problem of duplicating the PALs, of course, and possibly some related issues with component scarcity. (Perhaps the PALs could either be rolled into a CPLD or two, or unrolled into discrete components, although the latter might make for an unwieldy PCB board.)
Using the FPGA is undoubtedly the "right" choice, there's just a certain ring to the idea of making a machine that duplicates the original a little more closely in all its glorious hardware-shortcut-y obscureness in a way that's visible to the naked eye.