Intel 815 Instruction Target Opcode 61h, Mono Source Transparency Mode 1 = transparency enabled

Intel® 815 Chipset: Graphics Controller PRM, Rev 1.0

R

DWord	Bit	Description
0 = BR00	31:29	Client : 02h – 2D Processor
	28:22	Instruction Target (Opcode) : 61h
	21:20	Reserved. Must be Zero
	19:17	Monochrome source data bit position of the first pixel within a byte per scan
		line.
	16	Reserved. Must be Zero
0 = BR11	15:00	Dword Length : 04+ DWL = (Number of Immediate double words)h
1 = BR13	31:30	Reserved. Must be Zero
	29	Mono Source Transparency Mode: (1 = transparency enabled;
		0 = use background)
	28	Reserved. Must be Zero
	27	Reserved. Must be Zero
	26	Must Be One (‘1’).
	25:24	Color Depth:
		00 = 8 bit color
		01 = 16 bit color
		10 = 24 bit color
		11 = reserved
	23:16	Raster Operation:
	15:00	Destination Pitch (signed): (13:00 are implemented in Intel® 810 chipset)
2 = BR14	31:16	Destination Height (in scan lines): (28:16 are implemented in Intel® 810 chipset)
	15:00	Destination Width (in bytes): (12:00 are implemented in Intel® 810 chipset)
3 = BR09	31:00	Destination Address: Address of the first byte to be written
		(25:00 are implemented in Intel® 810 chipset)
	31:24	Reserved. Must be Zero
4 = BR18	23:00	Source Background Color:
5	31:24	Reserved. Must be Zero
5 = BR19	23:00	Source Foreground Color:
6	31:00	Immediate Data DW 0:
7	31:00	Immediate Data DW 1:
8 thru DWL+4	S	Immediate Data DWs 2 through DWORD_LENGTH (DWL):

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