Parallel Port Operation Mode Settings - Acer Altos 500 Series User Manual

Operation Mode
This item allows you to set the operation mode of the parallel port. Table 2-1 lists
the different operation modes.
Table 2-1

Parallel Port Operation Mode Settings

Setting
Standard Parallel Port
(SPP)
Standard and Bi-
directional
Enhanced Parallel Port
(EPP)
Extended Capabilities
Port (ECP)
ECP DMA Channel
This item becomes active only if you select Extended Capabilities Port (ECP) as
the operation mode. It allows you to assign DMA channel 1 or DMA channel 3 for
the ECP parallel port function (as required in Windows 95).
Altos 500 Series User's Guide
Function
Allows normal speed one-way operation
Allows normal speed operation in a two-
way mode
Allows bi-directional parallel port
operation at maximum speed
Allows parallel port to operate in bi-
directional mode and at a speed higher
than the maximum data transfer rate