Intel D15343-003 User Manual

Page 86

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Intel

82854 Graphics Memory Controller Hub (GMCH)

D15343-003

9:7

Refresh Mode Select (RMS)

: This field determines whether Refresh is enabled and, if so, at what

rate Refreshes will be executed.

000:

Refresh disabled

001:

Refresh enabled. Refresh interval 15.6 µsec

010:

Refresh enabled. Refresh interval 7.8 µsec

011:

Reserved.

111:

Refresh enabled. Refresh interval 64 clocks (fast refresh mode)

Other:

Reserved

Any change in the programming of this field Resets the Refresh counter to zero. This function is for
testing purposes, it allows test program to align refresh events with the test and thus improve
failure repeatability.