Intel 815 manual Post Divisor Select clock, VCO Loop Divide clock

Intel® 815 Chipset: Graphics Controller PRM, Rev 1.0

R

Bit		Description
22:20	Post Divisor Select clock 2.
	000	= Divide by 1
	001	= Divide by 2
	010	= Divide by 4
	011	= Divide by 8
	100	= Divide by 16 (default)
	101	= Divide by 32
	11x = Reserved
19	Reserved.
18	VCO Loop Divide clock 2.
	0 = Divided by 4*M (default)
	1 = Divided by 16*M
17:15	Reserved.
14:12	Post Divisor Select clock 1.
	000	= Divide by 1
	001	= Divide by 2
	010	= Divide by 4
	011	= Divide by 8
	100	= Divide by 16 (default)
	101	= Divide by 32
	11x = Reserved
11	Reserved.
10	VCO Loop Divide clock 1.
	0 = Divided by 4*M (default)
	1 = Divided by 16*M
9:7	Reserved.
6:4	Post Divisor Select clock 0.
	000	= Divide by 1
	001	= Divide by 2
	010	= Divide by 4
	011	= Divide by 8
	100	= Divide by 16 (default)
	101	= Divide by 32
	11x = Reserved
3	Reserved.
2	VCO Loop Divide clock 0.
	0 = Divided by 4 (default)
	1 = Divided by 16
1:0	Reserved.

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