System Board
1-17
1.11
Video Memory
1.11.1
Video Memory Configurations
The system board may come with 1, 2, or 4-MB SGRAM video
memory. Larger video memory allows you to display higher
resolutions and more colors.
The following table lists the possible video memory configurations.
Table 1-9
Video Memory Configurations
Memory Size
SGRAM
Location
4 MB
256K x 32 x 4 pcs.
U31, U32, U33, U34
2 MB
256K x 32 x 2 pcs.
U33, U34
1 MB
256K x 32 x 1 pc.
U34
1.11.2
Supported Video Resolutions
The following table lists the video resolutions supported by the
onboard VGA:
Table 1-10
Supported Video Resolutions
Resolution
bpp
V-Freg.
(Hz)
H-Freq.
(KHz)
Pixel Clock
(MHz)
640 x 480
8/16
60
31.4
25.2
640 x 480
8/16
72
37.5
31.2
640 x 480
8/16
75
37.5
31.5
640 x 480
8/16
90
47.9
39.9
640 x 480
8/16
100
52.9
44.9
800 x 600
8/16
48
int.
33.8
36.0
800 x 600
8/16
56
35.1
36.0
800 x 600
8/16
60
37.8
40.0
