System Devices - Acer TravelMate 420 Service Manual

System Devices

The System Devices screen contains parameters involving your hardware devices. It also provides advanced
settings of the system.
The table below describes the parameters in the screen. Settings in boldface are the default and suggested
parameter settings.
Parameter
Internal TouchPad
Infrared Port (FIR)
Base I/O address/IRQ
DMA
Parallel Port
Mode
Base I/O address/
Interrupt
DMA Channel
Chapter 2
Description
Determines whether or not to disable the internal
touchpad of a PS/2 pointing device is connected.
Sets the interrupt request of the serial port. Please
set the parameter to "Enabled" if you need to use
FIR under Windows operation system.
Sets the I/O address of the Infrared port.
Sets a DMA channel for the printer to operate in
disabled mode.
Enables, disables or auto detects the parallel port.
Sets the operation mode of the parallel port.
Sets the I/O address of the parallel port. This
parameter is enabled only if Mode is set to ECP or
Bi-directional.
Sets the interrupt request of the parallel port.
Sets a DMA channel for the printer to operate in
ECP mode. This parameter is enabled only if Mode
is set to ECP.
Options
Both
or Auto
Disabled/
Enabled/ Auto
3F8h/IRQ4; 2F8h/IRQ3; 2E8h/IRQ3
DMA1/ DMA3
Enabled
/Disabled/Auto
ECP
, EPP, Normal or Bi-directional
378h
, 278h or 3BCh
IRQ 7
or IRQ5
DMA3
or DMA1
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