
ÉlanSC310 Microcontroller Evaluation Board User’s Manual
4-13
1.
0
Evaluation Board’s DMA Mapping
The following table is the DMA mapping for the ÉlanSC310 microcontroller
evaluation board.
Table 4-5. Typical Full ISA DMA Mapping
DMA Device Assigned
Special Notes
7
ISA bus
16-bit I/O accesses
6
ISA bus
16-bit I/O accesses
5
ISA bus
16-bit I/O accesses
4
Reserved
Used to cascade DMA channels 0–3
3
ISA bus
8-bit I/O accesses
2
Super I/O floppy drive controller 8-bit I/O accesses
1
ISA
bus
Also used for memory-to-memory
transfers with DMA channel 0
0
ISA
bus
Also used for memory-to-memory
transfers with DMA channel 1
evalbd.book : ch4 Page 13 Thursday, August 8, 1996 2:34 PM