NEC Versa 550 Series Service Manual page 97

Table Appendix A-15 VGA High Refresh Modes ( Packed Pixel Mode )
Hex No. of Text
Mode Colors Display
79 256 80 x 30
7C* 256 100 x 37
Font Pixel Reso-
Size lution
8 x 16 640 x 480
8 x 16 800 x 600
Supported Video Modes
Dot Horiz.
Clock Freq.
MHz KHz
31.5 37.5
49.5 46.9
A-5
Vert.
Freq.
Hz
75
75