Amazing progress, we are nearing the finale!https://twitter.com/algestam/status/1180237976447672320 …
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Also stuff like Plug'n'Plays getting some attention lately and hopefully another big part, which is pre-CPU arcade emulation, will get to the spotlight. Saw semi-recently some hope for new advancements on that front in MAME.
Pre-CPU arcade emulation is a tough nut to crack, but not necessarily for the reasons you might think! The actual netlist simulation code in MAME is pretty much done and dusted. Sure, there can be more transistor types, diode types, and ICs added, but that's not the issue.
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The real issue is starkly insidious: Schematics are *wrong*. They're wrong *all* the *time*. Sure - you might get lucky and have a tech manual which, by some miracle, doesn't have any glaring, emulation-breaking errors in it. But such schematics are vanishingly rare.
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What this means is that you could conceivably author a perfectly accurate - to the schematic - netlist for MAME, yet still wind up with a non-working driver. Now you have to debug not just the emulation, but literally the documentation itself.
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