Bitfields for Compaq advanced video functionality |
| Bit | Description |
|---|---|
|
31 |
future graphics extensions (reserved, set to 0) |
|
30 - 16 |
reserved |
|
15 - 12 |
available video memory in 256K blocks, less one (0000 = 256K, etc.) |
|
11 - 8 |
reserved |
|
7 |
QVision modes supported |
|
6 |
Advanced VGA modes supported |
|
5 |
Accelerated VGA modes supported |
|
4 |
standard VGA modes supported |
|
3 - 2 |
reserved |
|
1 |
132-column modes supported |
|
0 |
reserved |