AMI Mark IV Screamer, Manual

Page: 64 / 93

Advanced CMOS Setup Options,
Continued
Password Check Option , cont'd
Setup permits up to three attempts to enter the correct
password. After each incorrect attempt, the password prompt
appears, followed by an
X . After the third incorrect attempt, the
system locks and reboots. The password will not be displayed
as it is entered. See Section 5 (Page ) for instructions on
changing a password.
The Internal Cache Memory and External Cache Memory
options appear on 80486-based systems. On 80386-based
systems,
Cache Memory will be displayed.
Internal Cache Memory
Appears only on 80486-based systems because the 80486 has
an internal cache. Enables or disables the CPU internal cache.
External Cache Memory
Appears only on 80486-based systems that have a caching
scheme external to the CPU. Specify whether external cache is
present.
Video or Adaptor ROM Shadow
ROM shadow is a technique in which BIOS code is copied from
slower ROM to faster RAM. The BIOS is then executed from the
RAM. Shadow options are chip set-specific and are dependent
on system hardware. They can appear on the Advanced CMOS
Setup screen. Each option permits a 16 KB segment to be
shadowed from ROM to RAM. If an option is enabled, and BIOS
code resides in that particular 16 KB segment, the BIOS will be
shadowed.
System ROM Shadow
The same concept applies here as above, except that in this
case, the entire system BIOS (64 KB in length) is shadowed at
RAM address F0000h.