Intel 845 Manual De Usuario
Register Description
R
Intel
®
82845 MCH for SDR Datasheet 81
Address
Offset
Symbol Name
Default
Access
58–5Fh
DRTC
DRAM Read Thermal Management Control
0000000
0h
0h
R/W/L
59–FFh — Reserved
— —
3.6.1
VID1—Vendor Identification Register (Device 1)
Address Offset:
00–01h
Default Value:
8086h
Attribute: RO
Size: 16
Size: 16
bits
The VID1 register contains the vendor identification number. This 16-bit register combined with
the DID1 Register uniquely identifies any PCI device. Writes to this register have no effect.
the DID1 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. Intel VID = 8086h.
3.6.2
DID1—Device Identification Register (Device 1)
Address Offset:
02–03h
Default Value:
1A31h
Attribute: RO
Size: 16
Size: 16
bits
This 16-bit register combined with the VID1 register uniquely identifies any PCI device. Writes to
this register have no effect.
this register have no effect.
Bit Description
15:0
Device Identification Number. This is a 16-bit value assigned to the MCH Device 1.
MCH1 Device 1 DID = 1A31h.
MCH1 Device 1 DID = 1A31h.