301467-005 Datasheet, PDF (192/426 Pages) Intel Corporation – Express Chipset

Integrated Graphics Device Registers (D2:F0)
(Intel® 82915G/82915GV/82915GL/ 82910GL GMCH Only)
R
9.1.33
ASLS—ASL Storage (D2:F0)
PCI Device:
Address Offset:
Default Value:
Access:
Size:
2
FCh
00000000h
R/W
32 bits
This SW scratch register only needs to be read/write accessible. The exact bit register usage must
be worked out in common between System BIOS and driver software, but storage for
switching/indicating up to 6 devices is possible with this amount. For each device, the ASL
control method requires two bits for _DOD (BIOS detectable yes or no, VGA/Non VGA); one bit
for _DGS (enable/disable requested) and two bits for _DCS (enabled now/disabled now,
connected or not).
Bit
Access &
Default
Description
31:0
R/W
RW according to a software controlled usage to support device switching
00000000 h
192
Datasheet