·
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.
·
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.
·
Cache Write Cycle, Cache Burst Read Cycle
: Follow below table
to set these Cache options.
CPU Clock Speed
Cache Write
Cycle
Cache Burst
Read Cycle
20MHz or 25MHz
2T
1T
33MHz with 64KB or
256KB Cache
3T
1T
33MHz with 128KB
cache
3T
2T
40MHz
3T
2T
50MHz
3T
2T
Page 32 486MIS System Board User's Manual
