3-14 Configuring the System
Advanced Menu
Menu Item Settings (default is bold)
Cache Base 0- 512K Uncached , Write Thro ugh, Write Pro tect,
Write Back
Controls caching of 512K base memory.
Cache Base 51 2 -640K Uncac hed, Write Th r ough, Writ e Pr otect,
Write Back
Controls caching of 512K-640K base
memory.
Cache Extended Memory
Area Uncached, Write Th rough, Wri te Protec t,
Write Back
Controls caching of system memory above
one MB.
Cache C800-CBFF
Cache CC00-CFFF
Cache D000-D3FF
Cache D400-D7FF
Cache D800-DBFF
Cache DC00-DFFF
Disabled, Write Throu gh, Write Prot ect,
Write Back
Setting at Di sabled proh i b its caching.
Setting at Write Through permits writes to be
cached and sent to main memory at once.
Setting at W r i t e Protect c au ses the BIOS t o
ignore writes.
Setting at Write Back permits write caching
but delays sending data to main memory
until necessary.