IBM 770 User Manual
The following shows the video BIOS extended modes for the 770
(containing a video chip Trident Cyber 9397 and 2 MB VRAM):
(containing a video chip Trident Cyber 9397 and 2 MB VRAM):
Figure
3-2. Video BIOS Extended Modes—Trident 9397
PAL
TV
Out
NTSC
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
TFT
LCD
XGA
o
o
o
o
o
o
o
o
o
o
1
o
1
o
1
o
1
o
o
o
o
o
o
o
o
o
External
Monitor
87i
96i
60
70
72
75
85
oo
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
VESA
Mode
Number
(Hex)
—
100
—
—
—
101
110
111
112
—
—
—
—
102
103
113
114
115
104
105
116
117
106
107
—
—
Video
Mode
VGA
modes
640x400x256
640x400x32k
640x400x64k
640x400xTrue
640x480x256
640x480x32k
640x480x64k
640x480xTrue
720x480x256
720x480x32k
720x480x64k
720x480xTrue
800x600x16
800x600x256
800x600x32k
800x600x64k
800x600xTrue
1024x768x16
1024x768x256
1024x768x32k
1024x768x64k
1280x1024x16
1280x1024x256
1600x1200x16
1600x1200x256
Note:
o
1
:
Supported
by
centering
mode
only.
3-4 Subsystems