Cache memory, Etx®-cd / bios operation – Kontron ETX-CD User Manual

Page 71

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ETX®-CD / BIOS Operation

Cache Memory

Feature

Option

Description

Memory Cache

Enabled

Disabled

Enables/disables the memory cache system

Cache System / Video BIOS area

Write Protect

uncached

Cache setting for System BIOS area

Cache Base 0-512k

Cache Base 512k-640k
Cache Extended Memory Area

Uncached

Write Through
Write Protect \Write Back

Uncached = Disabled: This block is not cached at all

USWC Caching: Uncached Speculative Write Combined
Write Through: Writes are cached and send to main

memory at once
Write Protect: Writes are ignored

Write Back: Writes are cached, but not sent to main
memory until necessary

Cache A000 - AFFF

Cache B000 - BFFF

Disabled

USWC Caching
Write Through

Write Protect
Write Back

-

Cache C800 - CBFF

Cache CC00 - CFFF

Disabled

Write Through
Write Protect

Write Back

-

Cache D000 - D3FF
Cache D400 - D7FF

Cache D800 - DBFF
Cache DC00 - DFFF

Disabled

Write Through

Write Protect
Write Back

-

Cache E000 - E3FF

Cache E400 - E7FF
Cache E800 - EBFF

Cache EC00 - EFFF

Disabled

Write Through
Write Protect

Write Back

-

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