IO
Custom registers.
| Address | Size | Description | Note |
|---|---|---|---|
| 0xA4300030 | 4? | ||
| 0xA4300038 | 4? | ||
| 0xA430003C | 4? | ||
| 0xA4400000 | 4? | ||
| 0xA4500008 | 4? | ||
| 0xA4600010 | 4? | ||
| 0xA4600014 | 4? | ||
| 0xA4600018 | 4? | ||
| 0xA460001C | 4? | ||
| 0xA4600020 | 4? | ||
| 0xA4600024 | 4? | ||
| 0xA4600028 | 4? | ||
| 0xA460002C | 4? | ||
| 0xA4600030 | 4? | ||
| 0xA4600040 | 4? | ||
| 0xA4600048 | 4? | Many times used for read/write actions. (card data access register???) | |
| 0xA4600060 | 4 | StatusField | This register is used for RTC, error led and other things... (probably status register?, made-up name) |
| 0xA4600070 | 4? | ||
| 0xA4610000 | 4? | ||
| 0xA4610200 | 4? | ||
| 0xA4610500 | 4 | ||
| 0xA4610504 | 4? | atb? (virtual address?) | |
| 0xA46E0400 | 4? or 2? | rdb? |
StatusField
| Bit(s) | Description |
|---|---|
| ?-15 | Box Id |
| 27 | Power (on and off) |
| 28 | RTC related? |
| 29 | Unknown bit |
| 30 | Error led |
| 31 | Power (only on) |
RTC
The iQue Player (or card?) has a custom RTC functionality. The Nintendo 64 doesn't have a RTC, except the Nintendo 64 version of Animal Crossing which uses a special custom RTC chip instead of a built-in RTC. The RTC functionality is heavly used in the game Animal Crossing. The RTC can be accessed through 0xA4600060. (unknown how)