| Register generic name | Register name | Start address | final address | size |
DMA control register | Level 0 - DMA set register | 25FE0000H | 25FE0017H | 24 bytes |
Level 1 - DMA set register | 25FE0020H | 25FE0037H | 24 bytes | |
Level 2 - DMA set register | 25FE0040H | 25FE0057H | 24 bytes | |
DSP control port | DSP program control port | 25FE0080H | 25FE0083H | 4 byte |
DSP program RAM data port | 25FE0084H | 25FE0087H | 4 byte | |
DSP data RAM address port | 25FE0088H | 25FE008BH | 4 byte | |
DSP data RAM data port | 25FE008CH | 25FE008FH | 4 byte | |
timer register | Timer 0 compare register | 25FE0090H | 25FE0093H | 4 byte |
Timer 1 set data register | 25FE0094H | 25FE0097H | 4 byte | |
Timer 1 mode register | 25FE0098H | 25FE009BH | 4 byte | |
Interrupt control register | interrupt mask register | 25FE00A0H | 25FE00A3H | 4 byte |
Interrupt status register | 25FE00A4H | 25FE00A7H | 4 byte | |
A-Bus control register | A-Bus interrupt acknowledge | 25FE00A8H | 25FE00ABH | 4 byte |
A-Bus configuration register | 25FE00B0H | 25FE00B7H | 8 bytes | |
A-Bus refresh register | 25FE00B8H | 25FE00BBH | 4 byte | |
SCU control register | SCU SDRAM selection register | 25FE00C4H | 25FE00C7H | 4 byte |
SCU version register | 25FE00C8H | 25FE00CBH | 4 byte |
 | Always use the cache-through address to access the SCU registers. |