B&R Industries Automation PC 620, Руководство пользователя

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Software • Automation PC 620 with BIOS
Chap
ter 4
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Soft
w
are
281 Automation PC 620 User's Manual V 1.90
Memory cache
Figure 139: 855GME - memory cache
BIOS setting Description Setting options Effect
Memory cache Enable/ disable utilization of the L2 cache. Enabled Enables this function.
Disabled Disables this function.
Cache system BIOS
area Set whether or not the system BIOS
should be buffered. Write protect System BIOS is mapped in the cache.
Uncached System BIOS is not mapped in the cache.
Cache video BIOS
area Set whether or not the video BIOS should
be buffered. Write protect Video BIOS is mapped in the cache.
Uncached Video BIOS is not mapped in the cache.
Cache base 0-512k Set whether the memory content should
be mapped in the cache (0-512k), and
when necessary, written in the main
memory. Uncached No mapping.
Write through Memory content is simultaneously mapped in the
cache and written to the main memory.
Write protect Memory content is mapped in the cache.
Write back Memory content is mapped only when necessary.
Table 198: 855GME - memory cache - setting options