User guide

2-6 Service Guide
2.3 Onboard Devices Configuration
The Onboard Devices Configuration screen contains parameter items that are related to port
devices on your computer.
Onboard Devices Configuration
Serial Port ---------------------------- [Enabled]
Base Address --------------------- [3F8h]
IRQ ----------------------------------- [4]
Parallel Port ------------------------- [Enabled]
Base Address --------------------- [378h]
IRQ ----------------------------------- [7]
Operation Mode ------------------ [Bi-directional]
ECP DMA Channel --------------- [-]
↑↓
=Move Highlight Bar,
→←
=Change Setting, Esc=Exit
Press ↑ and ↓ to move the highlight bar; press → and ← to change the setting of the highlighted
parameter. To exit this screen and return to the main screen, press
Esc
.
The following table describes the parameters in this screen. Settings in
boldface
are the default
and suggested parameter settings.
Table 2-3 Onboard Devices Configuration Parameters
Parameter Description Setting or Format
Serial Port Enables or disables the serial port
Enabled
Disabled
Base
Address
Sets the I/O base address of the serial port
3F8h
2F8h
3E8h
2E8h
IRQ Sets the IRQ (interrupt request) channel of the
serial port
4
11
Parallel Port Enables or disables the parallel port
Enabled
Disabled
Base
Address
Sets the I/O base address of the parallel port
378h
278h
3BCh
IRQ Sets the interrupt request (IRQ) channel of the
parallel port
7
5
Operation
Mode
Selects the operation mode of the parallel port.
ECP (Extended Capabilities Port) supports a 16-
byte FIFO (first in, first out) which can be
accessed by host DMA cycles and PIO cycles,
boosting I/O bandwidth to meet the demands of
high-performance peripherals.
Bi-directional
ECP
Standard