Epson EL 486UC - Manual (Page 35)

Enabling an External Cache
If you have installed external cache in your system, set the
External Cache
option
to Enabled.You must also set your
shadow video and BIOS options
to Cacheable
or
WP-Shadow.
Setting Shadow ROM Options
Your computer can access RAM faster than ROM. Two options,
Shadow BIOS
ROM and
Shadow Video ROM, allow your
system to copy the contents of its system and/or video ROM
into RAM
(WP-Shadow)
or external cache, if you have some
installed
(Cacheable).
When you use shadowing or the
external cache, your system can perform certain operations
faster. You cannot enable
Memory Remapping
when you
enablethe
Shadow Video ROM
and the
Shadow BIOS ROM
options.
Remapping Memory
The
Memory Remapping
option allows you to relocate 384KB
of memory to the top addresses of DRAM. You must disable
this option if you have enabled both the
shadow Video
ROM
and the
Shadow BIOS ROM
options or any of the
Shadow 16K
options that shadow memory at an address that
begins with “D.”
Setting Up Your System 1-19