參考資訊：
http://www.hacking-cult.org/?r/18/21
https://github.com/ekeeke/Genesis-Plus-GX
http://www.chibiakumas.com/68000/genesis.php
| Address | Description |
|---|---|
| $0000~$1FFF | Sound RAM |
| $2000~$3FFF | Reserved |
| $4000 | YM2612 A0 |
| $4001 | YM2612 D0 |
| $4002 | YM2612 A1 |
| $4003 | YM2612 D1 |
| $4000~$5FFF | Sound Chip |
| $6000 | Bank Register |
| $6000~$7F10 | Misc |
| $7F11 | PSG 76489 |
| $7F12~$7FFF | Misc |
| $8000~$FFFF | 68000 Bank |