iv
APPENDIX
Mode
Dot Clock
Frequencies
A: Front Porch
B: Sync Period
H
V
H
V
H
V
µs/Dot
ms/Line
µs/Dot
ms/Line
VGA
640 x 480
25.175 MHz 31.468 kHz
59.941 Hz
0.636 / 16
0.318 / 10
3.813 / 96
0.054 / 2
VGA
720 x 400
28.322 MHz 31.468 kHz
70.087 Hz
0.636 / 18
0.381 / 12 3.813 / 108
0.064 / 2
VESA
640 x 480
31.5 MHz
37.86 kHz
72.81 Hz
0.508 / 16
0.026 / 1
1.270 / 40
0.079 / 3
VESA
640 x 480
31.5 MHz
37.50 kHz
75.00 Hz
0.508 / 16
0.027 / 1
2.032 / 64
0.080 / 3
VESA
640 x 480
36.0 MHz
43.27 kHz
85.01 Hz
1.556 / 56
0.023 / 1
1.556 / 56
0.069 / 3
VESA
800 x 600
36.0 MHz
35.16 kHz
56.25 Hz
0.667 / 24
0.028 / 1
2.000 / 72
0.057 / 2
VESA
800 x 600
40.0 MHz
37.88 kHz
60.32 Hz
1.000 / 40
0.026 / 1
3.200 / 128
0.106 / 4
VESA
800 x 600
50.0 MHz
48.08 kHz
72.19 Hz
1.120 / 56
0.770 / 37 2.400 / 120
0.125 / 6
VESA
800 x 600
49.5 MHz
46.88 kHz
75.00 Hz
0.323 / 16
0.021 / 1
1.616 / 80
0.064 / 3
VESA
1024 x768
65.0 MHz
48.36 kHz
60.00 Hz
0.369 / 24
0.062 / 3
2.092 / 136
0.124 / 6
VESA
1024 x768
75.0 MHz
56.48 kHz
70.07 Hz
0.320 / 24
0.053 / 3
1.813 / 136
0.106 / 6
VESA
1024 x768
78.75 MHz
60.02 kHz
75.03 Hz
0.203 / 16
0.017 / 1
1.219 / 96
0.050 / 3
Macintosh
640 x 480
30.24 MHz
35.00 kHz
66.67 Hz
2.116 / 64
0.086 / 3
2.116 / 64
0.086 / 3
Macintosh
832 x 624
57.28 MHz
49.73 kHz
74.55 Hz
0.559 / 32
0.020 / 1
1.117 / 64
0.060 / 3