Re: hardware driver

[Jon Elson <jmelson-at-artsci.wustl.edu>]

Jon Elson wrote:

Yikes, I goofed!  I meant to send this to Terry Ridder only.  No release
of secrets here, though.  If anyone actually wants to play around with
taking control of the parallel port at the register level from a user-mode
program under Linux, this could be useful.  If you want to see how the
PPMC hardware is controlled from the EMC wrapper structure, most
of it is in here.  Sorry for blasting all of you with 100K of stuff!

Jon

> "Terry L. Ridder" wrote:
>
> > hello;
> >
> > the makefiles and .def files are "interesting".
>
> I got a pretty large package from Eric, and it has all the stuff
> necessary to build the diag program as a separate piece.
> (Maybe this is all in EMC already, I don't know.)
>
> Anyway, the tar.gz file is exactly what Eric sent me, and
> it has a number of errors, partly due to my poor description
> of the hardware, partly due to Eric's writing the code at
> 2 AM, i think.
>
> Anyway, there are 3 C files and an include file which are
> the only things I needed to change to make it work (as far
> as it does) with my hardware.