Functional Description
CPB902
C P B 9 0 2 U s e r M a n u a l
34
© 2 0 0 8 F a s t w e l v . 1 . 5 b E
4.2.4
DMA Channels
Figure 4.5:
DMA Request Channels Multiplexing Diagram
Table 4.5:
DMA Request Map
DMA Channel
Main Function
Alternative Source
0
Reserved for memory regeneration
–
1
PC/104 (DRQ1)
–
2
FDD (SIO)
PC/104 (DRQ2)
3
FBUS
PC/104 (DRQ3)
4
Slave controller
–
5
FBUS
PC/104 (DRQ5)
6
PC/104 (DRQ6)
–
7
PC/104 (DRQ7)
–