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VT8601 Apollo ProMedia
Revision 1.3 September 8, 1999
-67
Graphics Accelerator PCI Bus Master Registers
7HFKQRORJLHV ,QF
:H&
:H&RRQQHFW
QQHFW
DVD Registers
Port 2280 – MC Version ID...............................................RO
7-0
Version ID
Port 2281 – MC Control ...................................................RW
7
Debug Mode
0
Disable ...................................................default
1Enable
6
MC Completion Interrupt
0
Disable ...................................................default
1Enable
5
VO Completion Interrupt
0
Disable ...................................................default
1Enable
4
Host Bus Identification
0
AGP .....................................................default
1PCI
3
Decode Overwrite
0
Enable.....................................................default
1
Disable
2-1
IDCT Data Format
00 -reserved-................................................default
01 9 bits
10 8 bits
11 16 bits
0MC Mode
0
Disable ...................................................default
1Enable
Port 2282 – MC Frame Buffer Configuration................ RW
7
Interlaced Display
6
TV Flicker Filter Bypass
0
Use TV CRTC ....................................... default
1
Use VGA CRTC
5
Request Threshold of Display Command Queue
4
Request Threshold of PBF
3
Request Threshold of PFF
2
Hardware SP RL-Decode Disable
0
Enable .................................................... default
1
Disable
1-0
Frame Buffer Configuration
00 4-frame................................................... default
01 3.5-frame
10 3.5-frame HHR
11 3-frame
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