Chapter 5 BIOS
30
AI5TV Motherboard User’s Manual
Chipset Features Setup
This Setup menu controls the configuration of the motherboard
chipset.
ROM PCI/ISA BIOS
CHIPSET FEATURES SETUP
AWARD SOFTWARE INC.
Auto Configuration
: Enable
DRAM Timing
60ns
DRAM RAS# Precharge Time
3
DRAM R/W Leadoff Timing
6
Fast RAS To CAS Delay
3
DRAM Read Burst (EDO/FP)
x222/x333
DRAM Write Burst Timing
x3333
Fast MA to RAS# Delay CLK
1
Refresh Ras# Assertion
4CLKS
ISA Bus Clock
PCI CLK/4
Pipeline Cache Timing
Faster
System BIOS Cacheable
Disabled
Video BIOS Cacheable
Disabled
ESC : Quit
á
â
à
ß
: Select Item
8 Bit I/O Recovery Time
1
F1 : Help
PU/PD/+/- : Modify
16 Bit I/O Recovery Time
1
F5 : Old Values
(Shift) F2 : Color
Memory Hole At 15M-16M
Disabled
F6 : Load BIOS Defaults
Peer Concurrency
Enabled
F7 : Load Setup Defaults
Auto Configuration
This field predefined values for DRAM, cache timing according to
CPU type and system clock. When this field is enabled, the predefined
items will become read-only.
DRAM Timing
The DRAM timing is controlled by the DRAM Timing Registers. The
timing type is dependent on the system design. Slower rates may be
required in some system designs to support loose layouts or slower
memory.
DRAM RAS# Recharge Time
DRAM must continuously be refreshed or it will loose its data. This
option allows you to determine the number of CPU clocks allocated for
Row Address Strobe to accumulate its charge before DRAM is
refreshed. If refreshed time is not enough, refresh may be incomplete
and data will be lost.
DRAM R/W Leadoff Timing
This field allows you to set the number of CPU clocks before reads and
writes to DRAM. By default, it is set to
7/6 Leadoff timing
.
