Air 486SH, Руководство пользователя, Страница: 26 / 39

· IDE Block Mode Transfer
: Some latest IDE hard disks support
multiple sector (Block Mode) transfer for faster performance. Users
select "Enabled" to take advantage of this feature. If your system
hard disk supports Block Mode, BIOS message "Block Mode
Enabled" will appear during boot-up.
·
IDE Standby Mode
: Default is "Disabled". If this feature is enabled,
IDE hard disk will go into Standby Mode to save power in 15 minutes
of no access.
· Auto Key-Lock Time-out
: Default is "Disabled". Keyboard will lock up
to prevent unauthorized access after an idle period from 1 to 15
minutes. This feature is enabled by setting up system Password and
selecting number of minutes.
· Cyrix Suspend Feature
: Default is "Disabled". 486 compatible CPUs
from Cyrix support Suspend Feature that allows a dramatic reduction
in CPU power consumption.
· DRAM Speed, DRAM Write CAS Pulse, DRAM Write Cycle
: Select these
options according to table below:
CPU Clock
Speed
DRAM
Speed
DRAM
Write
CAS
Pulse
DRAM
Write
Cycle
20MHz or 25MHz Fastest 1T 0 W/S
33MHz Slower 1T 1 W/S
40MHz Slower 2T 1 W/S
50MHz Slowest 2T 1 W/S
· DRAM Hidden Refresh
: Select "Enabled" to maximize system
performance.
Page 26 486SH System Board User's Manual