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In the CMOS you are able to configure a parallel port to use Enhanced Parallel Port (EPP) or Extended Capabilities Port (ECP). EPP and ECP are both bi-directional standards that operate in 8-bit, and allow data transfer speed of approximately 2 MB(s).
It is also possible to completely disable the parallel port in the BIOS. The following are common Parallel Port Settings in the Setup program:
- Integrated Parallel Port
This setting allows you to specify the resources for an integrated parallel port. Most of the systems allow you to choose one of the typical resource settings allocated to parallel ports, or to disable the port:
378/IRQ7 (LPT1): This sets the parallel port to the I/O address and IRQ normally used by LPT1. Most of the time, this is the default setting.
278/IRQ5 (LPT2): This sets the parallel port to the I/O address and IRQ normally used by LPT2.
Disabled: Disables the integrated parallel port.
- Parallel Port ECP DMA Channel
This is used to assign a DMA channel for use by the port, if your system supports ECP parallel port mode and the port has been set to use ECP. The usual options are “DMA 1” and “DMA 3”.
