Table of Contents
Advertisement
Gate A20 Option
This entry allows you to select how gate A20 is handled. Gate A20
is a device used to address memory above 1 MB. Initially, gate A20
was handled via a pin on the keyboard. Today keyboards still
provide this support, however it is more common and much faster
for the system chipset to provide support for gate A20. The
choices are thus: Normal and Fast.
Security Option
This category allows you to limit access to the system. The
choices are System: which requires a password at boot up and
Setup: which only requires a password to access the setup utility.
Video BIOS Shadow
Determines whether the video display card BIOS will be copied into
system DRAM in order to increase display speed and is required
for system performance. However, it is optional depending on the
chipset design. The default setting is Enabled.
Shadowing Address Ranges
The next six lines, from C8000-CBFFF Shadow to DC000-DFFFF
Shadow are address ranges for shadowing other expansion card
ROMs. If there are any expansion cards with ROMs installed in
your system, you have to know the address range they use in order
to shadow them specifically. The default setting for all of these is
Disabled.
56
PCM-5894/5892 User Manual
Advertisement
Table of Contents
