Making adaptors and dumping the contents of PROMs for the Quantel DPB-7000 Paintbox MAME project. @TheMogMinerpic.twitter.com/eRdlKsevYv
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Interesting! So you'd actually be emulating the individual discrete logic parts here, not just a black box of the board function? (I'm assuming that apart from all those counters, you could replace chunks of this with some sort of truth table, however big)
Thus far I'm not going as far as emulating the individual discrete logic parts, but I am emulating the exact functionality as best I can, and documenting which part location each bit of the functionality comes from.
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e.g. rather than directly emulating a bunch of latches, I store values on the right clock cycle in an array called m_diskseq_ucode_latch, but I also have a comment indicating that those latches come from ICs GG/GF/GE/GD/GC/GB/GA.
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Got it. Thanks for the insight! It's fascinating stuff.
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