82G33 datasheet(116/437 Pages) INTEL

tên linh kiện	82G33

Giải thích chi tiết về linh kiện	Graphics and Memory Controller Hub

PDF	437 Pages

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DRAM Controller Registers (D0:F0)

116

Datasheet

5.1.32

GBSM—Graphics Base of Stolen Memory

B/D/F/Type:

0/0/0/PCI

Address Offset:

A4–A7h

Default Value:

00000000h

Access:

RW/L, RO

Size:

32 bits

This register contains the base address of graphics data stolen DRAM memory. BIOS

determines the base of graphics data stolen memory by subtracting the graphics data

stolen memory size (PCI Device 0 offset 52 bits 7:4) from TOLUD (PCI Device 0, offset

B0h, bits 15:4).

Note: This register is locked and becomes Read Only when the D_LCK bit in the SMRAM

Bit

Access &

Default

Description

31:20

RW/L

000h

Graphics Base of Stolen Memory (GBSM): This register contains

bits 31:20 of the base address of stolen DRAM memory. BIOS

determines the base of graphics stolen memory by subtracting the

graphics stolen memory size (PCI Device 0, offset 52h, bits 6:4) from

TOLUD (PCI Device 0, offset B0h, bits 15:04).

Note: This register is locked and becomes Read Only when the D_LCK

bit in the SMRAM register is set.

19:0

00000h

Reserved

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