does EPCS controller support DMA

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originally posted by bigboss25@Jun 29 2006, 07:34 PM

i would like to know if the epcs controller is able to handle dma transfer.

i would like to transfer nios2 code from epcs to sdram using dma at boot time, in order to boot as fast as possible.

i think that currently, if i'm not wrong, there is a firmware code (so the cpu) which handle this job. any idea ?

thanx all http://forum.niosforum.com/work2/style_emoticons/<#emo_dir#>/smile.gif

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The max clock rate of epcs is 40MHz.

So the data rate is less than 5MB/s.

With a proper boot code, the data rate can be handle well with PIO.

There will be little gain in using DMA.