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5-19
ParameterParameter DescriptionDescription SettingSetting
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
ECP DMA
Channel
Sets the DMA channel of
the parallel port when
the parallel operation
mode is set to ECP.
1
3