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Alpha488

4 419-0920 Rev. 1.0, 7/96

DMA Channel Selection

The Alpha488 has seven DMA channels. Channels 0-3 (8-bit), 5, 6, and 7

(16-bit) are available. Both the DRQ and DACK jumpers must be set to the desired DMA

channel for proper operation. Configure the board according to which DMA channel is

available. Figure 3 shows settings for selecting the DMA channels.

Figure 3. Alpha488 DMA Selection

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Measurement-computing Alpha488 Manuale Utente Pagina 6