82845MP Datasheet, PDF (54/157 Pages) Intel Corporation – Intel 845 Family Chipset-Mobile 82845MP/82845MZ Chipset Memory Controller Hub Mobile (MCH-M)

Intel^®82845MP/82845MZ Chipset-Mobile (MCH-M)
R
3.7.5.
RID – Revision Identification Register – Device #0
Address Offset:
Default Value:
Access:
Size:
08h
00h
Read Only
8 bits
This register contains the revision number of the MCH-M Device #0. These bits are read only and writes
to this register have no effect.
3.7.6.
Bit
Description
7:0
Revision Identification Number. This is an 8-bit value that indicates the revision identification
number for the MCH-M Device #0.
For the B-1 Stepping, this value is 05h.
SUBC – Sub-Class Code Register – Device #0
Address Offset:
Default Value:
Access:
Size:
0Ah
00h
Read Only
8 bits
This register contains the Sub-Class Code for the MCH-M Device #0. This code is 00h indicating a Host
Bridge device. The register is read only.
3.7.7.
Bit
Description
7:0
Sub-Class Code (SUBC). This is an 8-bit value that indicates the category of Bridge into which the
MCH-M falls. The code is 00h indicating a Host Bridge.
BCC – Base Class Code Register – Device #0
Address Offset:
Default Value:
Access:
Size:
0Bh
06h
Read Only
8 bits
This register contains the Base Class Code of the MCH-M Device #0. This code is 06h indicating a
Bridge device. This register is read only.
Bit
Description
7:0
Base Class Code (BASEC). This is an 8-bit value that indicates the Base Class Code for the MCH-
M. This code has the value 06h, indicating a Bridge device.
54
Datasheet
250687-002