User's Manual

Intel® 815 Chipset: Graphics Controller PRM, Rev 1.0
R
371
Parameters for Screen Resolution/Refresh Rate: 640x400_70Hz =
Dot Clock Value 25 //25.175-MHz Dot Clock
M Value 0x0013
N Value 0x0003
P Value 0x40
CR00 0x5F
CR01 0x4F
CR02 0x50
CR03 0x82
CR04 0x54
CR05 0x80
CR06 0xBF
CR07 0x1F
CR09 0x40
CR10 0x9C
CR11 0x0E
CR12 0x8F
CR13 0x50
CR15 0x96
CR16 0xB9
CR30 0x01
CR31 0x01
CR32 0x01
CR33 0x01
CR35 0x00
CR39 0x00
Watermark for 8 bpp at 100-MHz local memory speed 0x00409000
Watermark for 16 bpp at 100-MHz local memory speed 0x0040A000
Watermark for 24 bpp at 100-MHz local memory speed 0x0040A000
Watermark for 8 bpp at 133-MHz local memory speed 0x00008000
Watermark for 16 bpp at 133-MHz local memory speed 0x00008000
Watermark for 24 bpp at 133-MHz local memory speed 0x00008000
MSR Mask 0x40