Acer Aspire T130 Service Manual page 41

Parameter
Parallel Port Mode
ECP Mode Use DMA
Chapter 2
Description
Enables you to set data transfer protocol for your
parallel port.
There are four options: SPP (Standard Parallel Port),
EPP(Enhanced Parallel Port), ECP(Extended
Capabilities Port) and ECP+EPP.
SPP allows data output only. Extended Capabilities
Port (ECP) and Enhanced Parallel Port (EPP) are bi-
directional modes, allowing both data input and
output. ECP and EPP modes are only supported
with EPP and ECP aware peripherals.
When the onboard parallel port is set to ECP mode,
the parallel port can use DMA 3 or DMA 1.
Option
SPP
EPP
ECP
ECP+EPP
1
3
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