37 Chapter 44.6.15 UR2 Duplex ModeThis item allows you to select the IR half/full duplex function. Thechoices: Half, Full.4.6.16 Onboard Parallel PortThis field sets the address of the on-board parallel port connector. Youcan select either 3BCH/IRQ7, 378H/IRQ7, 278H/IRQ5 or Disabled. Ifyou install an I/O card with a parallel port, make sure there is no conflictin the address assignments. The CPU card can support up to three parallelports, as long as there are no conflicts for each port.4.6.17 Parallel Port ModeThis field allows you to set the operation mode of the parallel port. Thesetting ìNormalî allows normal speed operation, but in one directiononly. ìEPPî allows bi-directional parallel port operation at maximumspeed. ìECPî allows the parallel port to operate in bi-directional modeand at a speed faster than the maximum data transfer rate. ìECP + EPPîallows normal speed operation in a two-way mode.4.6.18 EPP Mode SelectThis field allows you to select EPP port type 1.7 or 1.9. The choices:EPP1.7, 1.9.4.6.19 ECP Mode Use DMAThis selection is available only if you select ìECPî or ìECP + EPPî inthe Parallel Port Mode field. In ECP Mode Use DMA, you can selectDMA channel 1, DMA channel 3, or Disable. Leave this field on thedefault setting.
