User manual
PCA-6742 User Manual 20
! Slave Ultra DMA [Enabled]
This item allows user to enable/disable primary slave IDE ultra DMA mode. Bios
default value suggest to “Enabled”.
! Master UDMA [Auto]
This item allows user to adjust primary master IDE mode of type for modification pur-
pose. Bios default value suggest to “Auto”.
! Slave UDMA [Auto]
This item allows user to adjust primary slave IDE mode of type for modification pur-
pose. Bios default value suggest to “Auto”.
! IDE HDD Block Mode [Enabled]
This item allows enabled or disabled that IDE block data transfer mode. It will speed
up HDD data transfer of efficiency. Bios default value suggest to “Enabled”.
! CKB input clock [8 MHz]
PS/2 keyboard communicates with the keyboard controller. The speed of the data
link depends on the clock signal generated by the keyboard controller.
! Onboard Serial Port 1 [3F8 / IRQ4]
This item allows user to change com 1 of address and IRQ.
! Onboard Serial Port 2 [2F8 / IRQ3]
This item allows user to change com 2 of address and IRQ.
! Onboard Serial Port 3 [3E8 / IRQ5]
This item allows user to change com 3 of address and IRQ.
! Onboard Serial Port 4 [2E8 / IRQ9]
This item allows user to change com 4 of address and IRQ.
! UART Mode select [Normal]
This item allows you to select UART mode.
! RxD, TxD Active [Hi, Lo]
This item allows you to determine the active of RxD, TxD.
! IR Transmission Delay [Enabled]
This item allows you to enable or disable IR transmission delay.
! UR2 Duplex Mode [Half]
This item allows you to select the IR half/full duplex function.
! Onboard Parallel Port [378 / IRQ7]
This field sets the address of the on-board parallel port connector. You can select
either Auto, 3BCH/IRQ7, 378H/IRQ7, 278H/IRQ5 or Disabled. If you install an I/O
card with a parallel port, make sure there is no conflict in the address assignments.
The CPU card can support up to three parallel ports, as long as there are no conflicts
for each port.
! Parallel Port Mode [SPP]
This field allows you to set the operation mode of the parallel port. The setting "SPP"
allows normal speed operation, but in one direction only. "EPP" allows bidirectional
parallel port operation at maximum speed. "ECP" allows the parallel port to operate in
bi-directional mode and at a speed faster than the maximum data transfer rate. “ECP
+ EPP” allows normal speed operation in a two-way mode
! EPP Mode Select [EPP1.7]
This field allows you to select EPP port type 1.7 or 1.9.
! ECP Mode Use DMA [3]
This selection is available only if you select “ECP” or “ECP + EPP” in the Parallel Port
Mode field. In ECP Mode Use DMA, you can select DMA channel 1, DMA channel 3,
or Disable. Leave this field on the default setting.










