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DMAalloc

dma_chan_t DMAalloc( char channel_mask, int highest );

Description

This function returns a handle to an available channel. The handle contains the channel number and a validation byte to prevent use of an old handle after deallocation.

Parameters

channel_mask

Mask of all the acceptable channels to choose from.

highest

Bool indicating whether to search for an available channel from 8 or from 0.

Return Value

Returns a handle to a DMA channel if one is available. If none are available it returns DMA_CHANNEL_NONE.

Library

DMA.LIB

See Also

DMAunalloc, DMAhandle2chan