User`s manual

66 System Resources
B.2 Direct Memory Access Channels
Table B-2: Direct Memory Access Channels
Note(1): DMA channel 1/3 is selected when using parallel port. Floppy
(Winbond default uses DMA 02) and parallel port cannot be used at the
same time.
Channel Number Data Width System Resource
08-bits
18-bits
Parallel port
(1)
28-bits
Diskette drive
(1)
38-bits
Parallel port
(1)
4 8-bits Direct memory access controller
5 16-bits Open
6 16-bits Open
7 16-bits Open