Datasheet

Register Description
R
114 Datasheet
4.11.1 VID – Vendor Identification Register (Device #2)
Address Offset: 00−01h
Default Value: 8086h
Access Attributes: Read Only
Size: 16 bits
The VID Register contains the vendor identification number. This 16-bit register combined with
the Device Identification Register uniquely identifies any PCI device. Writes to this register have
no effect.
Bit Description
15:0 Vendor Identification Number: This is a 16-bit value assigned to Intel.
4.11.2 DID – Device Identification Register (Device #2)
Address Offset: 02−03h
Default Value: 3582h
Access Attributes: Read Only
Size: 16 bits
This 16-bit register combined with the Vendor Identification register uniquely identifies any PCI
device. Writes to this register have no effect.
Bit Description
15:0 Device Identification Number: This is a 16-bit value assigned to the GMCH IGD (3582h).
4.11.3 PCICMD – PCI Command Register (Device #2)
Address Offset: 04−05h
Default: 0000h
Access: Read Only, Read/Write
Size: 16 bits
This 16-bit register provides basic control over the IGD’s ability to respond to PCI cycles. The
PCICMD register in the IGD disables the IGD PCI compliant master accesses to main system
memory.
Bit Description
15:10 Reserved
9 Fast Back-to-Back (FB2B)⎯RO
8 SERR# Enable (SERRE) ⎯RO
7 Address/Data Stepping⎯RO
6 Parity Error Enable (PERRE) ⎯RO
5 Video Palette Snooping (VPS) ⎯RO
4 Memory Write and Invalidate Enable (MWIE) ⎯RO
3 Special Cycle Enable (SCE) ⎯RO