Onboard Parallel Port; Ecp Mode Use Dma; Onboard Serial Port - Aaeon PCM-6892 Manual

Tx, Rx inverting enable
Please consult your IR peripheral documentation to select the
correct setting of the TxD and RxD signals.
The choices: Yes/Yes, No/No, No/Yes, Yes/No.

Onboard Parallel Port

Select a logical LPT port address and corresponding interrupt for
the physical parallel port
The Choice:3BC/IRQ7, 378/IRQ7, 278/IRQ5, Disabled.
Onboard Parallel Mode
Two bidirectional parallel ports. Supports Normal, ECP, EPP, ECP/
EPP.
The choices: Normal, EPP, ECP, ECP/EPP .

ECP Mode Use DMA

Select a DMA channel for the port.
The choices: 1, 3.
Parallel Port EPP Type
You can use this feature to choose which version of EPP to use. For
better performance, use EPP 1.9. But if you are facing connection
issues, try to set it to EPP 1.7.
The choices: EPP1.9, EPP1.7.

Onboard Serial Port 3

Select a matching address for the third serial port or disable it.
The choices: 3F8, 2F8, 3E8, 2E8, Diabled
58 PCM-6892 User Manual