4 advanced chipset setup, At bus clock, Slow refresh – Acrosser AR-B1320 User Manual
Page 45: Ras precharge time, Ras active time insert wait, Isa i/o high speed, Advanced chipset setup -7
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4.4
ADVANCED CHIPSET SETUP
This option controls the configuration of the board’s chipset. The controlling keys for this screen
are the same as the previous screen.
Figure 4-4 BIOS: Advanced Chipset Setup
AT Bus Clock
This option sets the polling clock speed of the ISA Bus (PC/104).
Available options: 14.318/2, PLCK2/3, PLCK2/4, PLCK2/5, PLCK2/6, PLCK2/8, PLCK2/10,
PLCK2/12
NOTE: 1) PLCK means the CPU input clock.
2) Acrosser recommends the user set this function at the range from 8MHz to 10MHz.
Slow Refresh
This option sets the DRAM refresh cycle time.
Available options:15us, 60 us, 120us
RAS Precharge Time
This option sets the DRAM RAS precharge time.
Available options: 1.5T, 2.5T, 3.5T
RAS Active Time Insert Wait
This option sets the DRAM time insert wait: RAS Active and CAS Precharge function setting.
Available options: Enable, Disable
ISA I/O High Speed
The speed field shows the speed at which the processor runs internally.
Available options: Enabled, Disabled
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