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82G33 Datasheet(PDF) 116 Page - Intel Corporation

Part # 82G33
Description  Graphics and Memory Controller Hub
PDF  437 Pages
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Manufacturer  INTEL [Intel Corporation]
Direct Link  http://www.intel.com
Logo INTEL - Intel Corporation

82G33 Datasheet(HTML) 116 Page - Intel Corporation

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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
register is set.
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
RO
00000h
Reserved



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