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
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
Macintosh
1152 x 870
100.0 MHz
68.68 kHz
75.06 Hz
0.320/32
0.044/3
1.280/128
0.044/3
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
37.5 kHz
75.00 Hz
0.508/16
0.027/1
2.032/67
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 x 768
65.0 MHz
48.36 kHz
60.00 Hz
0.369/24
0.062/3
2.092/136
0.124/6
VESA
1024 x 768
75.0 MHz
56.48 kHz
70.07 Hz
0.320/24
0.053/3
1.813/136
0.106/6
VESA
1024 x 768
78.75 MHz
60.02 kHz
75.03 Hz
0.203/16
0.017/1
1.219/96
0.050/3
VESA
1024 x 768
94.5 MHz
68.68 kHz
85.0 Hz
0.508/48
0.015/1
1.016/96
0.044/3
VESA
1280 x 1024 108.0 MHz
63.98 kHz
60.02 Hz
0.444/48
0.016/1
1.037/112
0.047/3
VESA
1280 x 1024 135.0 MHz
79.97 kHz
75.02 Hz
0.119/16
.013/1
1.067/144
0.038/3