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):

 

 

 

176

Page 176
Image 176
Intel 815 manual Instruction Target Opcode 61h, Mono Source Transparency Mode 1 = transparency enabled