AcerPower 6000 User’s Guide3-16The Base Address and IRQ parameters areconfigurable only if the Parallel Port is enabled.If you install an add-on card that has a parallel portwhose address conflicts with the parallel port onboard, a warning message appears on the screen.Check the parallel port address on the add-on cardand change the address to one that does not conflict.Operation ModeThis item allows you to set the operation mode of the parallel port. Table 3-1 liststhe different operation modes.Table 3-1 Parallel Port Operation Mode SettingsSetting FunctionStandard Parallel Port (SPP) Allows normal speed one-way operationStandard and Bidirectional Allows normal speed operation in a two-way modeEnhanced Parallel Port (EPP) Allows bidirectional parallel port operationat maximum speedExtended Capabilities Port(ECP)Allows parallel port to operate inbidirectional mode and at a speed higherthan the maximum data transfer rateECP DMA ChannelThis 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 3for the ECP parallel port function (as required in Windows 95).