VT8601 Via, VT8601 Datasheet - Page 118

• Manufacturer Part Number: VT8601
• Description: Slot-1 / Socket-370 PCI North Bridge
• Manufacturer: Via

Span Engine
PS1, PS2, PD1, and PD2 are used in blt and text operations to
define source and destination rectangles.
GEbase + 0 - Parameter Source 1 .................................... RW
GEbase + 4 - Parameter Source 2 .................................... RW
Revision 1.3 September 8, 1999
31-28 Reserved
27-16 Y-coordinate Parameter Source 1 Start
15-12 Reserved
31-28 Reserved
27-16 Y-coordinate Parameter Source 2 Start
15-12 Reserved
11-0 X-coordinate Parameter Source 1 Start
11-0 X-coordinate Parameter Source 2 Start
7HFKQRORJLHV ,QF
High 12 bits of parameter source 1 starting address in
Y coordinate
Low 12 bits of parameter source 1 starting address in
X coordinate
High 12 bits of parameter source 2 starting address in
Y coordinate
Low 12 bits of parameter source 2 starting address in
X coordinate
:H &
:H &R R QQHFW
QQHFW
........................................ always reads 0
........................................ always reads 0
........................................ always reads 0
........................................ always reads 0
-112
GEbase + 8 - Parameter Destination 1 ............................ RW
GEbase + C - Parameter Destination 2 ........................... RW
31-28 Reserved
27-16 Y-coordinate Parameter Destination 1 Start
15-12 Reserved
31-28 Reserved
27-16 Y-coordinate Parameter Destination 2 Start
15-12 Reserved
11-0 X-coordinate Parameter Destination 1 Start
11-0 X-coordinate Parameter Destination 2 Start
High 12 bits of parameter destination 1 starting
address in Y coordinate
Low 12 bits of parameter destination 1 starting
address in X coordinate
High 12 bits of parameter destination 2 starting
address in Y coordinate
Low 12 bits of parameter destination 2 starting
address in X coordinate
........................................ always reads 0
........................................ always reads 0
........................................ always reads 0
........................................ always reads 0
VT8601 Apollo ProMedia
3D Graphics Engine Registers