Chapter 6 AMI BIOS
78
Advanced CMOS Setup Options,
Continued
Password Check Option
Enables the password check option when the system boots
(
Always
) or when BIOS Setup (
Setup
) is executed. See
Section 5 (Page 82) for more about passwords.
C000 16K, Cache and Shadow
through
DC00 16K,
Cache and Shadow
These options only appear in Advanced CMOS Setup on
80486-based EZ-Flex systems. There are three settings for:
Disabled, Shadow,
or
Both
. ROM shadow is a technique in
which ROM code is copied from slower ROM to faster
RAM. The code is then executed from RAM. Cache is a
technique where frequently-used data is stored in fast
SRAM instead of slower DRAM for speedier access.
If
Shadow
is selected, the 16K memory segment that begins
at the address specified in this option is shadowed from
ROM to RAM and is write-protected, but not cached
internally. If
Both
is selected, the 16K memory segment
that begins at the address specified in this option is both
shadowed and cached internally but not write-protected. If
Both
is chosen and the system monitor has problems, select
Shadow
.
Disabled
disables shadow and cache.
The video ROM segments that can be shadowed, cached, or
both, are C000h and C400h. The adaptor ROM address
segments that can be shadowed are C800h, CC00h, D000h,
D400h, D800h, and DC00h.
Summary of Contents for 28 series
Page 1: ...American Megatrends Inc Series 28 EZ Flex Base Board User s Guide MAN 528 6 18 92 ...
Page 22: ...Chapter 4 Installation 16 ...
Page 55: ...AMI EZ Flex Base Board User s Guide 49 ...
Page 87: ...AMI EZ Flex Base Board User s Guide 81 ...
Page 103: ...AMI EZ Flex Base Board User s Guide 97 ...
Page 118: ...Appendix A EISA Configuration Worksheets 112 ...