Bitfields for OPTi 82C750 Vendetta (device 0) memory control |
| Bit | Description |
|---|---|
|
31 - 30 |
reserved |
|
29 |
reserved (1) |
|
28 - 18 |
reserved |
|
17 |
reserved (1) |
|
16 |
HA drive-back during CPU memory access enable |
|
15 - 6 |
PCI video frame buffer write posting hole |
|
5 - 4 |
reserved |
|
3 |
PCI bus write post disable |
|
2 |
video frame buffer write post (posting enabled if bit 2 = bit 3) |
|
1 |
video memory write post (posting enabled if bit 1 = bit 3) |
|
0 |
I/O cycle write post enable |
|
See Also: |