| Bit |
Description |
|
1, 0
|
centering
| 00 |
vertical centered |
| 01 |
from bottom |
| 10 |
from top |
| 11 |
reserved |
|
|
3, 2
|
720-dot fix-up options
| 00 |
OR every 8th and 9th pixel |
| 01 |
display MGA mode from left |
| 10 |
display MGA mode from right |
| 11 |
skip every 9th pixel |
|
|
4
|
??? |
|
7 - 5
|
video mode
| 00 |
CGA |
| 01 |
MGA |
| 10 |
EGA |
| 11 |
VGA |
|
|
8
|
external monitor enabled instead of LCD panel |
|
9
|
vertical expand mode enabled |
|
10
|
8-bit mode instead of 16-bit mode |
|
11
|
normal video rather than reverse video (for LCD) |
|
12
|
attribute automap rather than attribute emulation |
|
13
|
bold mode disabled (default) |
|
14
|
??? |
|
15
|
|