| Bits | Description |
|---|---|
| 7:6 | Multiface type (hard reset = 00) (config mode only) 00 = Multiface +3 (enable port 0x3F, disable port 0xBF) 01 = Multiface 128 v87.2 (enable port 0xBF, disable port 0x3F) 10 = Multiface 128 v87.12 (enable port 0x9F, disable port 0x1F) 11 = Multiface 1 (enable port 0x9F, disable port 0x1F) |
| 5 | Reserved, must be zero |
| 4 | Enable divmmc automap (hard reset = 0) |
| 3 | 1 to reverse left and right mouse buttons (hard reset = 0) |
| 2 | Reserved, must be zero |
| 1:0 | mouse dpi (hard reset = 01) 00 = low dpi 01 = default 10 = medium dpi 11 = high dpi |