TYAN THUNDER 2 ATX Manual page 39

System BIOS Cacheable
When set to Enabled, the contents of the F0000h system memory
segment can be read from or written to cache memory. The contents of
this memory segment are always copied from the BIOS ROM to
system RAM for faster execution. The settings are Enabled or Dis-
abled. The Optimal default setting is Enabled. The Fail-Safe default
setting is Disabled.
C000,16K Shadow and C400,16K Shadow
These options specify how the 32 KB of video ROM at C0000h is
treated. The settings are:
Setting
Disabled The contents of the video ROM are not copied to RAM.
The contents of the video ROM area from C000h-C7FFFh are copied (shadowed) from ROM to
Enabled
RAM for faster execution.
The contents of the video ROM area from C000h-C7FFFh are copied from ROM to RAM and can
Cached
be written to or read from cache memory.
The Optimal and Fail-Safe default settings are Cached.
C800,16K Shadow; CC00,16K Shadow; D000,16K Shadow;
D400,16K Shadow; D800, 16K Shadow; and DC00,16K Shadow
These options enable shadowing of the contents of the ROM area
named in the option. The ROM area not used by ISA adapter cards is
allocated to PCI adapter cards. The settings are:
Setting
Disabled The contents of the video ROM are not copied to RAM.
The contents of the video ROM area from C000h-C7FFFh are copied (shadowed) from ROM to
Enabled
RAM for faster execution.
The contents of the video ROM area from C000h-C7FFFh are copied from ROM to RAM and can
Cached
be written to or read from cache memory.
The Optimal and Fail-Safe default settings are Cached.
Description
Description
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