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Intel
82865G/82865GV GMCH Datasheet
Intel
82865GV GMCH
CAPREG—Capability Identification Register (Device 0)
Address Offset
Default Value
Access
Size:
E4h–E8h
000001060009h
RO
40 bits
9.3.2
Host-to-AGP Bridge Registers (Device 1)
Device 1 does not exist on the 82865GV component. The Device 1 registers described in
Chapter 3
are not in the 82865GV. For the 82865GV, these register address locations are Intel Reserved.
9.4
Synchronous Display Differences
The synchronous display is different between the 82865G and 82865GV. For the 82865GV, replace
Section 5.5.3
,
Synchronous Display
with the following:
Synchronous Display
Microsoft Windows* 98 and Windows* 2000/XP have enabled support for multi-monitor display.
Synchronous mode will display the same information on multiple displays.
Since the 82865GV GMCH has several display ports available for its single pipe, it can support
synchronous display on two displays unless one of the displays is a TV. No synchronous display is
available when a TV is in use. The GMCH does not support two synchronous digital displays. The
82865GV GMCH cannot drive multiple displays concurrently (different data or timings). Since the
82865GV GMCH does not support AGP, it is incapable of operating in parallel with an external
AGP device. The 82865GV GMCH can, however, work in conjunction with a PCI graphics
adapter.
Bits
Description
15:8
Next_Pointer.
This field has the value A0h pointing to the next capabilities register, AGP
Capability Identifier Register (ACAPID). Since AGP is disabled (IGDIS = 0), this becomes the last
pointer in the device, and it is set to 00h signifying the end of the capabilities linked list.