ECS P5HX-A, Руководство пользователя, Страница: 27 / 37

P5HX-A
User’s Manual 1-27
Fast RAS# To CAS# Delay - Selects the RAS-to-CAS delay time for DRAM
access . The available options are:
•
3 (default)
•
2
DRAM Read Burst <EDO/SPM>
- Determines the timing for burst read to the
cache . If your DRAM type is EDO DRAM , we suggest you to select x222(EDO)
timing to get a better performance . The available options are:
•
x222/ x333 (default)
•
x444/ x444
•
x333/ x444
DRAM Write Burst Timing
- Determines the timing for burst write to the cache .
If your DRAM type is EDO DRAM , we suggest you to select x222(EDO) timing to
get a better performance . The available options are:
•
x333 (default)
•
x444
•
x222
DRAM Speculative Leadoff - Determines the timing for speculative leadoff to
the cache . The available options are:
•
Enabled (default)
•
Disabled
Turn-Around Insertion
- Determines to access turn-around insertion or not . The
available options are:
•
Disabled (default)
•
Enabled
ISA Clock - ISA clock divide by 4 or 3 depending on PCI bus clock. Users can
refer to the formula for clear figure. ( ISA Clock = PCI Clock / 3 or ISA Clock =
PCI Clock / 4 ). The available options are:
•
PCICLK/4 (default)
•
PCICLK/3
Turbo Read Leadoff - This bit will affect the read leadoff timings of the DRAM.
When this bit is set, it will get a 1 HCLK pull-in of all read leadoff timings. The
available options are:
•
Disabled (default)
•
Enabled
System BIOS Cacheable
- Allows system BIOS to be cacheable. The available
options are:
•
Enabled (default)
•
Disabled
Video BIOS Cacheable
- Allows video BIOS to be cacheable. The available
options are:
•
Enabled (default)
•
Disabled
8 Bit I/O Recovery Time - Defines the 8-bit I/O recovery time with one of the
following system clock options. The available options are:
•
1 (default)
•
2/3/4/5/6/7/8/NA
16 Bit I/O Recovery Time
- Defines the 16-bit I/O recovery time with one of the
following system clock options. The available options are:
•
1 (default)
•
2/3/4/NA
Memory Hole At 15M-16M
- Enables this option to reserve the certain space in
memory for ISA cards. The available options are:
•
Disabled (default)
•
Enabled