Settings
Cache
specifies which cache memory the CPU should use. Cache memory greatly
increases performance. If the system runs too fast for certain older software,
you can slow it down by disabling the cache (DISABLED).
INTERN ONLY
Only the internal cache is enabled.
INTERN AND EXTERN
The internal cache and the external cache are enabled.
DISABLED
Both the internal cache and the external cache are disabled. All cache-
related settings are then without effect.
Default entry:
INTERN AND EXTERN
Cache Mode
Condition:
Cache
must be enabled.
Cache Mode
sets the mode in which the CPU uses the cache; write
operations to the cache are carried out either in write-back mode or write-
through mode. In write-back mode the CPU writes information to the cache
and the information is only written to main memory if necessary. Memory and
cache contents are not identical. In write-through mode the processor writes
the information to the cache and to main memory. The contents of memory
and cache are identical.
WRITE BACK
The cache works in write-back mode.
WRITE THROUGH
The cache works in write-through mode.
Default entry:
WRITE BACK
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Settings
Cache BIOS ROM
Condition:
Cache
must be enabled.
Cache BIOS ROM
lets you specify BIOS ROM areas that should also be
mapped to the cache in addition to main memory.
SYSTEM BIOS ONLY
The system BIOS is mapped to the cache.
VIDEO BIOS ONLY
The video BIOS is mapped to the cache.
SYSTEM AND VIDEO BIOS
The system BIOS and the video BIOS are mapped to the cache.
DISABLED
BIOS ROM areas are not mapped to the cache.
Default entry:
SYSTEM AND VIDEO BIOS
Cache Adaptor ROM
Condition:
Cache
must be enabled.
Cache Adaptor ROM
allows you to specify whether the relevant 16-Kbyte ROM
area should be mapped to the cache. Mapping the ROM area to RAM
increases system performance.
NO
The relevant ROM area is not mapped to the cache.
YES
The relevant ROM area is mapped to the cache.
Default entry:
NO
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