Acer Aspire 7100 Aspire 7100 Service Guide - Page 34

Parallel Port This parameter allows you to enable or disable the parallel port. Base Address This function allows you to set a logical base address for the parallel port. The options are: u 3BCh u 378h u 278h IRQ This function allows you to assign an interrupt for the parallel port. The options are IRQ 5 and 7. NOTE The Base Address and IRQ parameters are configurable only if the Parallel Port is enabled. If you install an add-on card that has a parallel port whose address conflicts with the parallel port on board, a warning message appears on the screen. Check the parallel port address on the add-on card and change the address to one that does not conflict. Operation Mode This item allows you to set the operation mode of the parallel port. Following table lists the different operation modes. Setting Function Standard Parallel Port (SPP) Standard and Bi-directional Enhanced Parallel Port (EPP) Extended Capabilities Port (ECP) 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 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). Chapter 2 27