Vga Extended Modes - NEC Versa 2500 Series Service Manual

VGA EXTENDED MODES

The C&T 65548 VGA BIOS supports standard VESA and extended modes, listed in the
following table.
Table A-5 VGA Extended Modes (Text Mode)
Hex No. of Text
Mode Colors Display
60 16 132 x 25
61 16 132 x 50
Table A-6 VGA Extended Modes (4-Bit Linear Mode)
Hex No. of Text
Mode Colors Display
20 16 80 x 30
22 16 100 x 37
24 16 128 x 48
24I
Table A-7 VGA Extended Modes (8-Bit Linear Mode)
Hex No. of Text
Mode Colors Display
30 256 80 x 30
32 256 100 x 37
34* 256 128 x 48
34I*
Table A-8 VGA Extended Modes (15-Bit Linear Mode)
Hex No. of Text
Mode Colors Display
40* 32K 80 x 30
Font Pixel
Size Resolution
8 x 16 1056 x 400
8 x 16 1056 x 400
Font Pixel Reso-
Size lution
8 x 16 640 x 480
8 x 16 800 x 600
8 x 16 1024 x 768
Font Pixel Reso-
Size lution
8 x 16 640 x 480
8 x 16 800 x 600
8 x 16 1024 x 768
Font Pixel Reso-
Size lution
8 x 16 640 x 480
Video Modes
Dot Clock Horiz.
MHz Freq.
KHz
40.0 30.5
40.0 30.5
Dot Horiz.
Clock Freq.
MHz KHz
25.175 31.5
40.0 37.5
65.0 48.5
44.9 35.5
Dot Horiz.
Clock Freq.
MHz KHz
25.175 31.5
40.0 37.5
65.0 48.5
44.9 35.5
Dot Horiz.
Clock Freq.
MHz KHz
50.350 31.5
A-3
Vert.
Freq.
Hz
68
68
Vert.
Freq.
Hz
60
60
60
43
Vert.
Freq.
Hz
60
60
60
43
Vert.
Freq.
Hz
60