VT121 ColorVue Series User Guide
150-033
The Display Timing Cont.
IBM MODES
Mode
Resolution
Total
Horizontal
Nominal
Frequency
±0.5KHz
Vertical
Nominal
Frequency
±1Hz
Nominal Pixel
Clock (MHz)
EGA
640 x 350@70Hz
800 x 449
31.469
70.086
25.175
CGA
640 x 480@60Hz
800 x 449
31.469
70.086
25.175
DOS
800 x 600@56Hz
900 x 449
31.469
70.087
28.322
VGA
800 x 600@60Hz
800 x 525
31.469
59.940
25.275
XGA
800 x 600@72Hz
1304 x 798
57.515
72.100
75.000
Table 6.2 Applicable video timing - IBM Modes
8
MAC MODES
Mode
Resolution
Total
Horizontal
Nominal
Frequency
±0.5KHz
Vertical
Nominal
Frequency
±1Hz
Nominal
Pixel Clock
(MHz)
VGA
640 x 480@60Hz
800 x 525 31.469
59.940
25.175
640 x 480@67Hz
864 x 525 35.000
66.667
30.240
SVGA
832 x 624@75Hz
1152 x 667 49.725
74.551
57.283
XGA
1024 x 768@60Hz
1312 x 813 48.780
60.001
64.000
1024 x 768@75Hz
1328 x 804 60.241
74.927
80.000
Table 6.3 Applicable video timing - MAC Modes
