845GL datasheet(59/193 Pages) INTEL

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845GL 数据表(PDF) 59 Page - Intel Corporation

部件名	845GL

功能描述	Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH)

PDF	193 Pages

Scroll/Zoom	100%

制造商	INTEL [Intel Corporation]

网页	http://www.intel.com

标志

59 / 193 page

Intel® 82845G/82845GL/82845GV GMCH Datasheet

Notes on Pre-Allocated Memory for Graphics

These Register Bits control the allocation of memory from main memory space for use as graphics

local memory. The memory for TSEG is pre-allocated first and then the graphics local memory is

pre-allocated. An example of this allocation mechanism is:

TOM equals 64 MB,

TSEG selected as 512 KB in size,

Graphics Local Memory selected as 1 MB in size

General System RAM available in system = 62.5 MB

General System RAM Range

00000000h to 03E7FFFFh

TSEG Address Range

03F80000h to 03FFFFFFh

TSEG pre-allocated from

03F80000h to 03FFFFFFh

Graphics Local Memory pre-allocated from 03E80000h to 03F7FFFFh

VGA Memory and I/O Space Decode Priority

1. Integrated Graphics Device (IGD), Device 2.

2. PCI-to-PCI bridge, Device 1.

3. Hub Interface.

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