I did know ppdev does this - but correct me if I'm wrong: ppdev in 2.2.x
doesn't use hardware handshaking (big loss in speed, about a factor of
15 when we tried it). Also, we burned a couple of days trying to read
from the port with ppdev and never did get it to work. I vaguely
remember looking through the archives here and think I remeber other
people having had similar problems. I guess in 2.3 - 2.4 these problems
On Tue, 4 Apr 2000, Tim Waugh wrote:
> On Mon, 3 Apr 2000, Carl Michal wrote:
> > Due to popular demand (4 requests so far!), I'm posting a simple
> > kernel module which catches interrupts for delivery to user space
> > programs. The authors of this module are most definitely novice kernel
> > hackers, so a serious critique of this module would be appreciated.
> > I have also some pseudo-code which outlines how our driver talks to
> > the parallel port using hardware EPP reads and writes. We get about
> > 1MB/s throughput on a SIIG ISA parallel port card.
> You know that ppdev already does this, right?
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