Pinouts

MVS Cartridges
Signal names:
 * A1~A19: 68k address bus
 * D0~D15: 68k data bus
 * SDPAD0~SDPAD7, SDRAD0~SDRAD7: V ROM(s) data bus(ses) ?
 * CR0~CR31: C ROMs multiplexed bus ?
 * SDA0~SDA15: ?
 * P0~P23: ?
 * FIXD0~FIXD7: S ROM data bus ?