NCR S26 manual Parallel Port Settings, Parallel Port Operation Mode Settings, Setting Function

System Security

Table 4-4. Parallel Port Settings

Setting	Function
3BCh (IRQ 7)	Corresponds to the parallel port with address 3BCh
378h (IRQ 7)	Corresponds to the parallel port with address 378h
278h (IRQ 5)	Corresponds to the parallel port with address 278h
Disabled	Disables the parallel port

To deactivate the parallel port, select the Disabled option. If you install an add-on card with a parallel port whose address conflicts with the onboard parallel port, the system automatically disables the onboard functions.

Check the parallel port address on the add-on card and change the address to one that does not conflict.

Operation Mode permits you to set the operation mode of the parallel port. The table below lists the available operation modes of the parallel port.

Table 4-5. Parallel Port Operation Mode Settings

Setting	Function
Standard Parallel Port (SPP)	Allows normal speed one-way operation
Standard and Bidirectional	Allows normal speed operation in a two-way
	mode
Enhanced Parallel Port (EPP)	Allows bidirectional parallel port operation at
	maximum speed
Extended Capabilities Port (ECP)	Allows parallel port to operate in
	bidirectional mode and at a speed higher
	than the maximum data transfer rate

ECP DMA Channel becomes active only if you selected Extended Capabilities Port (ECP) as the operation mode. It permits you to select DMA channel 1 or DMA channel 3 (as required in Microsoft Windows95™).

4-26 Using the BIOS Setup Utility