In 1987 there was a (very) limited release of an arcade cabinet called "Moonquake," I have just discovered. Within, was a rather novel hardware arrangement.
This was internally an Amiga 500 with an Ensoniq 5503 DOC (the sound synth chip in the Apple IIgs and Mirage synthesizers) interfaced to it for audio. On the Apple IIgs, the DOC had one 64K sound bank. The chip supported two such banks, but the 5503 in Moonquake apparently had 512K of sound RAM -- each oscillator (or channel (sorta)) had its own 64K of RAM to pull from.
https://www.youtube.com/watch?v=lPe9An3I2Ak
Thanks for the info on this, Ians Schmidt and Brumby from the Apple II slack.
https://www.arcade-museum.com/Videogame/moon-quake
This unique system is supported under MAME.
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