IBM PCM-6890B, All-in-One FC/Socket 370 Celeron manual Select a DMA channel for the port

Onboard FDC Controller

Select Enabled if your system has a floppy disk controller (FDC) installed on the system board and you wish to use it. If you install an add-in FDC or the system has no floppy drive, select Disabled in this field.

Onboard Serial Ports (1, 2)

Select a logical COM port address for the first and second serial ports.

RxD, TxD Active

Consult your IR peripheral documentation to select the correct setting of the TxD and RxD signals.

ECP Mode Use DMA

Select a DMA channel for the port.

EPP Mode select

Select EPP port type 1.7 or 1.9.

Onboard Serial Port 3.

Serial Port 3 Use IRQ.

Onboard Serial Port 4.

Serial Port 4 Use IRQ.

72 PCM-6890B User Manual