System Security - Acer Extensa 500 Service Manual

Parameter
Base Address
IRQ
Parallel Port
Base Address
IRQ
Operation
Mode
ECP DMA
Channel

System Security

The System Security screen contains parameters that help safeguard and
protect your computer from unauthorized use.
Chapter 2
Description
Sets the I/O address of the serial port.
Options: 3F8h, 2F8h, 3E8h or 2E8h
Sets the interrupt request of the serial port.
Options: 4 or 11
Enables or disables the parallel port.
Options: Enabled or Disabled
Sets the I/O address of the parallel port.
Options: 378h, 278h or 3BCh
Sets the interrupt request of the parallel port.
Options: 7 or 5
Sets the operation mode of the parallel port.
Options: Bi-directional , ECP or Standard
Sets a DMA channel for the printer to operate in
ECP mode. This parameter is enabled only if
Operation Mode is set to ECP.
Options: 1 or 3
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