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|First use||1999 ?|
|Used on||MV1C, CDZ, ROM-Only boards...|
Later version of the NEO-YSA chip. Contains a YM2610, the Z80 CPU and its RAM. It is also used to handle player input.
Can be used with a [BU9480F] 16bit stereo DAC.
Pin 23: Input, read REG_STATUS_B.
Waveforms on test points during crosshatch screen:
TP9, TP10 (under the board) and TP11 are all high.