Product specifications

VT8601A Apollo PLE133
Revision 1.82 October 22, 2001 -98- VGA Extended Registers
Technologies, Inc.
Delivering Value
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CR81-80 – Window 1 Horizontal Scaling Factor............RW
15 Horizontal Minify / Zoom Enable
0 Horizontal Zoom Enable........................ default
1 Horizontal Minify Enable
Minify Enabled:
14-13 Tap 1
12-10 Horizontal Minify Integer (Inverter), Hsrc/Hdst – 1
9-0 Horizontal Minify Factor, (Hdst/Hsrc) * 1024
Zoom Enabled:
13-0 Horizontal Zoom Factor, (Hdst/(Hsrc-2)-1) * 1024
CR83-82 – Window 1 Vertical Scaling Factor ................RW
15 Vertical Minify / Zoom Enable
0 Vertical Zoom Enable............................ default
1 Vertical Minify Enable
14 Vertical Filtering
0 Disable ................................................... default
1 Enable
13-10 Reserved .........................................always reads 0
9-0 Vertical Minify / Zoom Factor (Vdst/Vsrc) * 1024
CR89-86 – Window 1 Video Window Start.....................RW
31-28 Reserved ......................................... always reads 0
27-16 Video Window Vertical Start
In pixel delays from the edge of VSYNC
15-12 Reserved ......................................... always reads 0
11-0 Video Window Horontal Start
In pixel delays from the rising edge of HSYNC
CR8D-8A – Video Window End.......................................RW
31-28 Reserved ......................................... always reads 0
27-16 Video Window Vertical End
In pixel delays from the edge of VSYNC
15-12 Reserved ......................................... always reads 0
11-0 Video Window Horontal End
In pixel delays from the rising edge of HSYNC