B.2 direct memory access channels, Direct memory access channels, Table b-2: direct memory access channels – ADLINK NuPRO-E320 User Manual

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System Resources

B.2 Direct Memory Access Channels

Table B-2: Direct Memory Access Channels

Note (1): DMA channel 0/1/3 is selected when using parallel port.
Floppy and parallel port cannot be used at the same time.

Channel Number

Data Width

System Resource

0

8-bits

Parallel port

(1)

1

8-bits

Parallel port

(1)

2

8-bits

Diskette drive

(1)

3

8-bits

Parallel port

(1)

4

Reserved - cascade channel

5

16-bits

Open

6

16-bits

Open

7

16-bits

Open