Bitfields for AMD-645 Miscellaneous Control 3 register |
| Bit | Description |
|---|---|
|
7 - 4 |
reserved (0) |
|
3 |
disable RTC PORT 0074h and PORT 0075h |
|
2 |
disable integrated USB controller |
|
1 |
disable integrated IDE controller |
|
0 |
add 512K to offset 4Eh bits 15-12 at top of PCI memory |
|
See Also: |