PC Hardware A Beginner’s Guide

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Chapter 13: System Resources^305


DMA Channel Common Device Other Uses
0 Memory refresh None
1 Sound card SCSI host adapter, ECP port,
NIC, voice modem
2 Floppy disk drive Tape drive
3 Open SCSI host adapter, ECP port,
NIC, voice modem
4 Cascade to DMA 0 – 3 None
5 Sound card SCSI host adapter, NIC
6 Open Sound card, NIC
7 Open Sound card, NIC

Table 13-5. DMA Channel Assignments


Figure 13-16. DMA Channel assignments shown in the Computer Properties window of the
Windows Device Manager

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