Register Description

R

3.5.11SVID—Subsystem Vendor Identification (Device 0)

Offset:

2C–2Dh

Default:

0000h

Access:

R/WO

Size:

16 bits

This value is used to identify the vendor of the subsystem.

Bit

Description

 

 

15:0

Subsystem Vendor ID. (Default = 0000h). This field should be programmed during boot-up.

 

After this field is written once, it becomes read only.

 

 

3.5.12SID—Subsystem Identification (Device 0)

Offset:

2E–2Fh

Default:

0000h

Access:

R/WO

Size:

16 bits

This value is used to identify a particular subsystem.

Bit

Description

 

 

15:0

Subsystem ID. (Default = 0000h). This field should be programmed during boot-up. After this

 

field is written once, it becomes read only.

 

 

3.5.13CAPPTR—Capabilities Pointer (Device 0)

Offset:

34h

Default:

E4h

Access:

RO

Size:

8 bits

The CAPPTR provides the offset that is the pointer to the location where the AGP standard registers are located.

Bit

Description

 

 

7:0

AGP Standard Register Block Pointer Address. This address pointer indicates to software

 

where it can find the beginning of the AGP register block.

 

E4h = AGP register block beginning address.

 

 

Intel® 82845 MCH for SDR Datasheet

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Image 51
Intel 845 manual SVID-Subsystem Vendor Identification Device, SID-Subsystem Identification Device