Specifications

DMA Controller (V40)
DMA Mask (DMK)
The DMK register, shown in Figure 9-9, is used to mask DMA
requests made by the DMA channel. The register is accessed with
either byte write or read instructions. To mask a DMA channel, the
respective bit must be programmed with a logical 1. A logical 0
enables the DMA channel to make requests.
Register:DMK
Address:Base + F
Access:Read or Write
76543210
M0
DMARQ Mask
0 Not masked
1 Masked
111————
Figure 9–9. DMA Mask Register.
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