Product specifications

VT8601A Apollo PLE133
Revision 1.82 October 22, 2001 -67- Graphics Accelerator PCI Bus Master Registers
Technologies, Inc.
Delivering Value
Delivering ValueDelivering Value
Delivering Value
Port 228B-2288 – MC Y-Reference Address ...................RW
31-20 Reserved .........................................always reads 0
19-0 Y-Reference Start Address (quadword aligned)
Port 228F-228C – MC U-Reference Address ..................RW
31-20 Reserved .........................................always reads 0
19-0 U-Reference Start Address (quadword aligned)
Port 2293-2290 – MC V-Reference Address....................RW
31-20 Reserved .........................................always reads 0
19-0 V-Reference Start Address (quadword aligned)
Port 2297-2294 – MC Display Y-Address Offset ............RW
31-20 Reserved .........................................always reads 0
19-0 Y Address Offset
Y address offset (quadword aligned) of first display
pixel relative to the first pixel (top left hand corner)
of the picture.
Port 229B-2298 – MC Display U-Address Offset............RW
31-20 Reserved .........................................always reads 0
19-0 U Address Offset
U address offset (quadword aligned) of first display
pixel relative to the first pixel (top left hand corner)
of the picture.
Port 229F-229C – MC Display V-Address Offset...........RW
31-20 Reserved .........................................always reads 0
19-0 V Address Offset
V address offset (quadword aligned) of first display
pixel relative to the first pixel (top left hand corner)
of the picture.
Port 22A0 – MC H Macroblock Count............................RW
7-0 Number of Horizontal Macroblocks
Port 22A2 – MC V Macroblock Count ............................RW
7-0 Number of Vertical Macroblocks
Port 22A5-22A4 – MC Frame Buffer Y Length..............RW
15-0 Number of Pixels in a Y Frame
Port 22AB-22A8 – Color Palette Entries .........................RW
Port 22B3-22B0 – SP BUF0 Pixel Start Address ............RW
Port 22B7-22B4 – SP BUF1 Pixel Start Address ............RW
Port 22BB-22B8 – SP BUF0 Command Start Address..RW
Port 22BF-22BC – SP BUF1 Command Start Address .RW
Port 22C1-22C0 – SP Y Display Offset............................RW
Port 22D0 – Digital TV Encoder Control........................RW
Port 22D3-22D1 – Digital TV Encoder CFC...................RW