Parallel Port Mode; Ecp Mode Use Dma; Epp Mode Select; Ir Transmission Delay - Aaeon MB-662 User Manual

Onboard Serial Ports (1, 2, 3, 4)
Normally, the main board's I/O chips will occupy a certain portion
of memory space. For each I/O device the computer provides an
I/O address. The more devices attached the more address needed
to organize the memory storage areas. If all the I/O devices were
run through the same address, your devices would come to a near
halt. By providing the end user with four serial ports this allows
devices to run more efficiently if needed.
Selections of logical COM port addresses are as follows. ( 3F8,
3E8H, 2F8, 2E8H)
RxD, TxD Active
Consult your IR peripheral documentation to select the correct
setting of the TxD and RxD signals.

Parallel Port Mode

Two bi-directional parallel ports. Supports SPP, ECP, EPP,
ECP + EPP.

ECP Mode Use DMA

Select a DMA channel for the port.

EPP Mode select

Select EPP port type 1.7 or 1.9.

IR Transmission Delay

Disable setting will have no transmission delay when SIR is
changed from RX mode to TX mode.
Enabled setting will delay transmission for 4 characters time when
SIR is changed from RX mode to TX mode.

Onboard Parallel Port

Select a logical LPT port address and corresponding interrupt for
the physical parallel port
The Choice: 278H, 378, disabled
Chapter 3 Award BIOS Setup 75