HP D315 manual Programming, Upgrading IGP-BASED Graphics, Config Reset, Addr Register Value

Technical Reference Guide

6.4PROGRAMMING

The IGP’s integrated graphics processing unit is configured using PCI configuration registers listed in Table 6-2.

Table 6-2.815E-Based Graphics Controller PCI Configuration Registers

Table 6-2.

Graphics Processing Unit PCI Configuration Registers (Device 0, Function 0, Bus 1)

PCI			PCI
Config.		Reset	Config.		Reset
Addr.	Register	Value	Addr.	Register	Value
00, 01h	Vendor ID	10DEh	2E, 2Fh	Subsystem ID	[2]
02, 03h	Device ID	[1]	30-33h	Vid. BIOS Base Addr.	[2]
04, 05h	Command	[2]	34h	Capabilities Pointer	[2]
06, 07h	Status	[2]	3Ch	Interrupt Line	[2]
08h	Revision ID	[2]	3Dh	Interrupt Pin	[2]
09-0Bh	Class Code	[2]	3Eh	Min. Grant	[2]
0Eh	Header Type	[2]	3Fh	Max. Latency	[2]
0Fh	BIST	[2]	DC, DDh	Pwr. Mgmt. Capabilities	[2]
10-13h	Memory Range Addr.	[2]	DE, DFh	Pwr. Mgmt. Capabilites	[2]
14-17h	Mem. Map Range Addr.	[2]	E0, E1h	Pwr. Mgmt. Control	[2]
2C, 2Dh	Subsys. Vendor ID	[2]	E2-FFh	Reserved	[2]

NOTE:

[1]D315, = 01A0h; d325, = 01F0h

[2]Refer to NVidia documentation for detailed register descriptions and values.

The GPU is controlled through memory-mapped registers by the appropriate software driver.

6.5UPGRADING IGP-BASED GRAPHICS

The IGP-based graphics subsystem of these systems is 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 GPU of the IGP.

Compaq D315 and hp d325 Personal Computers 6-5

Featuring the AMD Athlon XP Processor

Second Edition - April 2003