6.13.1 osenv_isadma_alloc: Reserve a DMA channel

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6.13.1 `osenv_isadma_alloc`: Reserve a DMA channel

int osenv_isadma_alloc(int channel);

Component OS, Nonblocking

This requests a DMA channel.
If sucessfull, the driver must be able to directly manipulate the ISA DMA controller.

channel
The DMA channel to reserve.

Returns 0 on success, non-zero if already allocated.

University of Utah Flux Research Group