Programming; Upgrading The Graphics Subsytem - HP Compaq d330 DT Technical Reference Manual

Chapter 6 Integrated Graphics Subsystem
6.4

PROGRAMMING

The 865G-based graphics controller is configured using PCI configuration registers listed in Table
6-2.
Table 6-2. 815E-Based Graphics Controller PCI Configuration Registers
865G-Based Graphics Controller PCI Configuration Registers (GMCH, Function 2)
PCI
Config.
Addr. Register
00, 01h Vendor ID
02, 03h Device ID
04, 05h Command
06, 07h Status
08h Revision ID
09-0Bh Class Code
0Eh Header Type
0Fh BIST
10-13h Memory Range Addr.
14-17h Mem. Map Range Addr.
2C, 2Dh Subsys. Vendor ID
NOTE:
Assume unmarked locations/gaps as reserved. Refer to Intel documentation for detailed
register descriptions.
The graphics controller is controlled through memory-mapped registers by the appropriate
software driver.
6.5

UPGRADING THE GRAPHICS SUBSYTEM

All models except those that use the USDT form factor are upgradeable by installing an AGP
graphics card into the AGP slot. The upgrade procedure is as follows:
1. Shut down the system through the operating system.
2. Unplug the power cord from the rear of the system unit.
3. Remove the chassis cover.
4. Install the AGP card into the AGP slot.
5. Replace the chassis cover.
6. Reconnect the power cord to the system unit.
7. Power up the system unit.
The BIOS will detect the presence of the AGP card and disable the IGC of the 82865G GMCH.
The IGC cannot operation concurrently with a separate AGP controller card installed but can
operate concurrently with a PCI graphics card. All models provide at least one PCI slot.
6-6 hp compaq d330 and d530 Series of Personal Computers
Featuring the Intel Pentium 4 Processor
Table 6-2.
PCI
Reset Config.
Value Addr.
8086h 2E, 2Fh
2562h 30-33h
0000h 34h
0090h 3Ch
01h 3Dh
030000h 3Eh
00h 3Fh
00h DC, DDh
8 DE, DFh
0's E0, E1h
0000h E2-FFh
First Edition - June 2003
Register
Subsystem ID
Vid. BIOS Base Addr.
Capabilities Pointer
Interrupt Line
Interrupt Pin
Min. Grant
Max. Latency
Pwr. Mgmt. Capabilities
Pwr. Mgmt. Capabilites
Pwr. Mgmt. Control
Reserved
Reset
Value
0000h
0's
D0h
00h
01h
00h
00h
0001h
0021h
0000h
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