we have a embeded system .The achitecture is MPC8245+intel82371southbrige+ide hard disk.Now the question is as follow:The ide hard disk can work well int the pio mode,but<br>in DMA mode it can not work ! The debuge information printed is &quot;DMA time out!&quot; when the driver start the DMA transe process,The hard disk did not generate the interruption.The hard disk had tested to support DMA! <br><!-- footer --><br><br><br>
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