[rtl] DMA and real time interrupts

["eric keller" <eek105@psu.edu>]

I know very little about Linux programming, unfortunately,
 but i am hoping to port a controller i have running under
 dos to rtlinux.  After many unfortunate experiments, my
 MS-DOS driver for my A/D D/A board uses DMA and interrupts.
  This forces the timing of the a/d to be synchronized with
 the timer and i only have to do work when all of my data
 is available, and i don't have to figure out which data i
 am being handed each time my interrupt routine is invoked
 (reduces the number of interrupts by a factor of 4 which is
 nothing to sneeze at either).

My question is, is it possible to port this code to rtlinux.

If so, has anyone used DMA? i found one message in the archive asking that
question with no answer.

thanks, eric keller
eek105@psu.edu

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