82845G Datasheet, PDF (183/193 Pages) Intel Corporation – Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH)

Intel^® 82845GL/82845GV GMCH
9.4
9.4.1
9.4.1.1
Intel^® 82845G and Intel^® 82845GL/82845GV Register
Differences
Chapter 3 describes the registers for the 82845G GMCH. This section describes the changes to
Chapter 3 for the 82845GL/82845GV GMCH. The differences are in the Device 0 and Device 1
register sets. The Device 2 registers are the same for the 82845G and 82845GL/82845GV.
DRAM Controller/Host-Hub Interface Device Registers
(Device 0)
Device 0 Registers Not in 82845GL/82845GV
The following registers are not in the 82845GL82845GV and the address locations are Intel
Reserved.
APBASE — Aperture Base Configuration Register (Device 0)
Address Offset:
Size:
10–13h
32 bits
AGPM — AGP Miscellaneous Configuration Register (Device 0)
Address Offset
Size:
51h
8 bits
ACAPID — AGP Capability Identifier Register (Device 0)
Address Offset
Size:
A0–A3h
32 bits
AGPSTAT — AGP Status Register (Device 0)
Address Offset
Size:
A4–A7h
32 bits
AGPCMD — AGP Command Register (Device 0)
Address Offset
Size:
A8–ABh
32 bits
AGPCTRL — AGP Control Register (Device 0)
Address Offset
Size:
B0–B3h
32 bits
APSIZE — Aperture Size Register (Device 0)
Address Offset
Size:
B4h
8 bits
Intel^® 82845G/82845GL/82845GV GMCH Datasheet
183