Asus AP2400R-E1 - Manual (Page 94)

5-20 Chapter 5: BIOS setup
Parallel Port Mode [ECP+EPP]
This field allows you to set the operation mode of the parallel port.
[Normal] allows normal-speed operation but in one direction only; [EPP]
allows bidirectional parallel port operation; [ECP] allows the parallel port to
operate in bidirectional DMA mode; [ECP+EPP] allows normal speed
operation in a two-way mode. Configuration options: [Normal] [EPP] [ECP]
[ECP+EPP]
ECP DMA Select [3]
This field allows you to configure the parallel port DMA channel for the
selected ECP mode. This selection is available only if you select [ECP] or
[ECP+EPP] in Parallel Port Mode above. Configuration options: [1] [3]