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AR-B1474 User¡¦s Guide
6-5
OnBoard FDC
This option enables the floppy drive controller on the AR-B1474.
OnBoard IDE
This option Enabled/Disabled the use of the IDE controller on the AR-B1474.
Parallel Port Address
This option is used to select the port address and the IRQ of the on-board parallel port. The addresses are 378H,
278H, 3BCH, and Disable. The IRQs are IRQ5 & IRQ7 for selecting.
Parallel Port Mode
This option is specifies the parallel port mode. The settings are Printer or Extended (Bi-direction). The system
support four mode: SPP, EPP & SPP, ECP, ECP & EPP for selecting.
Serial Port 1
This option is used to select the port address and the IRQs of the on-board serial port A. The options are 3F8H,
2F8H, 3E8H, 2E8H, and Disable. The system support IRQ3, IRQ4, IRQ5, and IRQ9 for selecting.
Serial Port 2
This option is used to select the port address and the IRQs of the on-board serial port B. The options are 3F8H,
2F8H, 3E8H, 2E8H, and Disable. The system support IRQ3, IRQ4, IRQ5, and IRQ9 for selecting.
6.4 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.
Automatic Configuration
If selecting a certain setting for one BIOS Setup option determines the settings for one or more other BIOS Setup
options, 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.
There is two department: DRAM Setting and ISA Bus Clock & Timing Setting
AR Bus Clock Select
DRAM Read Wait State
DRAM Write Wait State
CACHE Read Wait State
CACHE Write Wait State
Cycle Check Point
These options set the DRAM and Cache RAM access speed. If AUTO Config Function option is enabled, the other
options will return to the default settings.
I/O Recovery Feature
I/O Recovery Period
If I/O Recovery Feature option is enabled, the BIOS inserts a delay time between two I/O commands. The delay
time is defined in I/O Recovery Period option.
Memory Remapping
If this option is enabled, the un-shadowed RAM area will be remapped to 1MB area above.