845GL datasheet(61/193 Pages) INTEL

Part #	845GL

Description	Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH)

PDF	193 Pages

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Manufacturer	INTEL [Intel Corporation]

Direct Link	http://www.intel.com

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

3.5.1.17

DRA

—DRAM Row Attribute Register (Device 0)

Address Offset:

70–71h (72–77h Reserved)

Default Value:

00h

Access:

R/W

Size:

8 bits

The DRAM Row Attribute Register defines the page sizes to be used when accessing different

pairs of rows. Each nibble of information in the DRA registers describes the page size of a pair of

rows:

Row0, 1:

70h

Row2, 3:

71h

432

Row Attribute for Row 1

Row Attribute for Row 0

432

Row Attribute for Row 3

Row Attribute for Row 2

Bit

Description

Reserved.

6:4

Row Attribute for Odd-numbered Row.

This field defines the page size of the corresponding row.

000 = 2 KB

001 = 4 KB

010 = 8 KB

011 = 16 KB

Others = Reserved

Reserved.

2:0

Row Attribute for Even-numbered Row.

This field defines the page size of the corresponding row.

000 = 2 KB

001 = 4 KB

010 = 8 KB

011 = 16 KB

Others = Reserved

845GL Datasheet(PDF) 61 Page - Intel Corporation

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