Dma Channel Assignments - Toshiba Satellite 110 Series User Manual

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System Resources

DMA Channel Assignments

IRQ Use
7 LPT1
8 Real-time clock
9 Software redirect to INT 0Ah
10 Reserved
11 Reserved
12 PS/2 Mouse/AccuPoint or PC
Card
13 Numeric Data Processor
14 Hard disk, ECP, or PC Card
15 ECP or PC Card
DMA Channel Assignments
Direct Memory Access (DMA) allows some devices to transfer
data to and from memory at high speeds, without using the CPU.
Such devices are each assigned a unique DMA channel. The com-
puter has two DMA controllers with four channels on each con-
troller, a total of eight DMA channels.
The following table lists the computer's DMA channel
assignments.
DMA Use
0 Reserved
1 Reserved
2 3 1/2" diskette drive, or ECP
3 Reserved
4 Cascade from DMAC 1
5 Reserved
6 Reserved
7 Reserved
Part III: Appendixes
Notes
Choice for ECP or PC Card
Choice for ECP or PC Card
Choice for ECP or PC Card
Choice for ECP or PC Card
Notes
ECP
ECP