19
Appendix B
Supported Timing
Item
Standards
Resolution
Dot
Clock
(MHz)
Vertical
Scanning
Frequency
(Hz)
Horizontal
Scanning
Frequency
(kHz)
Sync Polarity or
composite sync
(H/V)
Operating
Mode
1 NEC
PC98 640x400
25.20
70.15 31.50
-/-
A/D/G
2 NEC
PC98 640x400
21.05
56.42 24.83
-/-
A/G
3
MAC 13” mode
640x480
30.24
66.67
35.00
-/-
A/D/G
4
MAC 16” mode
832x624
57.28
74.55
49.73
-/-
A/D/G
5
MAC 17” mode
1024x768
80.00
75.02
60.24
-/-
A/D/G
6 VGA 640x350
25.18
70.09
31.47 +/- A/D/G
7 VGA 640x400
25.18
70.09
31.47 -/+ A/G
8 VGA 640x480
25.18
59.94
31.47 -/- A/D/G
9 VESA 640x480 31.50 72.81 37.86
-/-
A/D/G
10 VESA 640x480 31.50 75.00 37.50
-/-
A/D/G
11 VESA 800x600 36.00 56.25 35.16
+/+
A/D/G
12 SVGA 800x600
40.00
60.32
37.88 +/+ A/D/G
13 VESA 800x600 50.00 72.19 48.08
+/+
A/D/G
14 VESA 800x600 49.50 75.00 46.88
+/+
A/D/G
15 VGA 720x400
28.32
70.09
31.47 -/+ A/G
16 XGA 1024x768
65.00
60.00
48.36 -/- A/D/G
17 VESA 1024x768 75.00 70.07 56.48
-/-
A/D/G
18 VESA 1024x768 78.75 75.03 60.02
+/+
A/D/G
19 1024x768
71.64
66.13
53.96
+/+
A/D/G
20 VESA 1152x864 108.00 75.00
67.50
+/+
A/D/G
21
1152x870 100 75.06 68.68
-/-
A/D/G
22 VESA 1280x960 108.0 60.0
60.0
+/+
A/D/G
23 VESA 1280x1024
108.0 60.02 63.98
+/+
A/D/G
24 VESA 1280x1024
127.0 69.85 74.88
+/+
A/D/G
25 VESA 1280x1024
135.0 75.03 79.98
+/+
A/D/G
26 SUN 1024x768
64.13
59.98
48.29 H+V A
27 SUN 1024x768
74.25
70.04
56.59 H+V A
*A=Analog Mode ; D=Digital Mode ; G=Sync On Green Mode
*Once a mode is optimized, there is no need to make any further adjustment as long
as the VGA card remains unchanged.
*Specifications are subject to change without notice.