Re: IOC Controllers Under Linux (or IOC's for < $500)

[Eric Norum <eric.norum@usask.ca>]

Bill Lavender wrote:
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> Can you send me a copy of the changes that you had to make to talk to the
> Cyberresearch boards?  It would be useful to see some examples of what is
> required to talk to real devices under Linux via ioccore.

For simple I/O (no interrupts, no DMA) I've found it easiest to just use
inb, outb, etc. right from the user level.  No kernel modules and no
linux drivers required.  I start such applications from a setuid-root
wrapper which allocates the appropriate I/O ports then setuid's back to
the real uid and exec's the application.  In this way any user can
safely play with the device without needing root priviliges.

-- 
Eric Norum                                 eric.norum@usask.ca
Department of Electrical Engineering       Phone: (306) 966-5394
University of Saskatchewan                 FAX:   (306) 966-5407
Saskatoon, Canada.