AR-B1479 User’s Guide
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5.4 ADVANCED CHIPSET SETUP
This option controls the configuration of the board’s chipset. Control keys for this screen are the same as for the
previous screen.
AMIBIOS SETUP - ADVANCED CHIPSET SETUP
(C) 1998 American Megatrends, Inc. All Rights Reserved
DRAM Automatic Configuration Enabled
EDO Dram Access Time 60ns
FP Dram Access Time None Used
Refresh Cycle Time 187.2US
RAS Palse Width When Refresh 7T
DRAM Read Leadoff Time 1T
ISA Bus Clock Frequency 7.159MHZ
MEMORY HOLE at 15M - 16M Disabled
USB Function Disabled
USB Keyboard / Mouse Legacy Support Disabled
VGA Shared Memory Size 1M
VGA Frequency 55MHz
Available Options :
Disabled
Enabled
ESC:Exit ↑↓:Sel
PgUp/PgDn:Modify
F2/F3:Color
Figure 0-6 BIOS: Advanced Chipset Setup
DRAM Automatic Configuration
If selecting a certain setting for one BIOS Setup option determines the settings for one or more other BIOS Setup
options, the BIOS automatically assigns the dependent settings and does not permit the end user to modify these
settings unless the setting for the parent option is changed. Invalid options are grayed and cannot be selected.
Memory Hole at 15-16 MB
This option specifies the range 15MB to 16MB in memory that cannot be addressed on the ISA bus.
ISA Bus Clock Frequency
This option is used to select the ISA bus clock rate.
USB Function
USB Keyboard/Mouse Legacy Support
These options are used to <Enabled> the USB function and it’s only useful in the DOS mode. The USB function
sets <Enabled> will occupy IRQ10.
VGA Shared Memory Size
This option sets the VGA’s occupied memory size.
VGA Frequency
This option sets the display’s refresh.
AT Bus Clock
This option sets the polling clock speed of ISA Bus (PC/104).
NOTE:
1. PCLK means the CPU inputs clock.
2. Acrosser recommends user setting at the range of 8MHz to 10MHz.
Slow Refresh
This option sets the DRAM refresh cycle time.
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