Multi word DMA is the successor of Single word DMA and on its turn it was made obsolete by the introduction of Ultra DMA. Multi-word DMA is however still supported by most hardware, although even the lowest UDMA modes provide a better transfer speed. Its speed is limited to 16MB/s making its use sensible only when the only other option is PIO.

Comments? Let us know!   ATAREF/2 (C) 2007-2009 WTY Soft. All rights reserved (legal).