4-26AcerAltos 21000 System GuideParallel PortThis parameter allows you to enable or disable the parallel port.Base AddressThis function lets you set a logical base address for the parallel port.The options are:• 3BCh• 378h• 278hIRQThis function lets you assign an interrupt for the parallel port. Theoptions are IRQ 5 and 7.The Base Address and IRQ parameters areconfigurable only if Parallel Port is enabled.If you install an add-on card that has a parallelport whose address conflicts with the parallelport on board, the system automatically disablesthe onboard functions.Check the parallel port address on the add-oncard and change the address to one that doesnot conflict.