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4-16 User’s Manual
4.5.5 Parallel Port Base Address
The parallel port can accomodate a parallel printer or other parallel devices.
The default setting for the parallel port base address is [378h(IRQ 7)]
1
. The other options for this parameter are:
• 278h(IRQ 5)
• 3BCh (IRQ 7)
• Disabled
4.5.6 Parallel Port Operation Mode
The parallel port supports four operation modes:
• Standard Parallel Port (SPP)
• Bi-Directional
• EPP
• ECP
EPP or Enhanced Parallel Port is a parallel port interface that greatly
improves performance for bidirectional block-mode data transfers. Burst
data transfer rates of 50~150 KB/sec. for standard parallel ports jump to 2
MB/sec. for EPP. ECP or Extended Capabilities Port is a fast parallel
interface backward-compatible with standard parallel port. It boosts the I/O
bandwidth to meet the demands of high-performance peripherals.
The default setting is [Standard Parallel Port (SPP)].
If you set EPP as the parallel port operation mode, do not use
3BCh as the parallel port base address; otherwise, I/O conflicts
will occur.
1
The parameter value is the base address expressed in hexadecimal.