Ampro Corporation 486E User Manual
Page 87
Product Reference
2–71
Table 2–51. DMA Channel Assignments
Channel
Function
0
1
2
3
Available for 8-bit transfers
Available for 8-bit transfers
(Multimode Parallel port)
Floppy controller
Available for 8-bit transfers
4
5
6
7
Cascade for channels 0-3
Available for 16-bit transfers
Available for 16-bit transfers
Available for 16-bit transfers
Table 2–52 summarizes the available interrupt assignments for all subsystems on the
Little Board/486e CPU. Use the table to plan which interrupts to use in your system. Factory
defaults are shown in gray.
Table 2–52. Summary of IRQ Options
IRQ
Function
3
4
5
6
7
9
10
11
12
14
15
Serial 1
"
Serial 2
"
Serial 3
"
"
Serial 4
"
"
Parallel
"
"
Floppy
"
IDE
"
Ethernet
"
" " "
Video
(None)