mlavengood wrote:wondering if this sound chip info is right? from what I can tell YM2151 or 2149 are both four-channel (three tone and one noise) and this clearly has 6 channels. maybe YM 2203?
No. The YM2151 is an 8-channel FM chip, and it was available for the Sharp X1 as an expansion card (the Sharp CZ-8BS1). (It may have been integrated into later models?) It's the same chip that was later integrated into the X68000, and is also found in many arcade games. As far as I know the YM2203 was never used in a Sharp machine?
(There IS a YM2203 version of Sorcerian, and that is the original PC-8801 version. That version, and its YM2608 counterpart, has yet to be ripped.)