On Tue, 15 Apr 1997 17:16:42 -0400 (EDT) 
 codewarrior@daemon.org (Andrew Brown) wrote:

 > as for stray interrupt 7, that *is* the lpt device.  if disabling
 > it (where did you disable it?  cmos?  controller card?) doesn't
 > work, build the lpr device into your kernel and it will suck up
 > the stray interrupts.

...unless the interrupt isn't caused by the parallel port.  Chances
are you'll just start seeing lots of "lpt0: out of paper" ... somewhat
annoying.

IR 7 can be caused by the PIC receiving an interrupt, but the line
dropping before the PIC can deal with it... the PIC has to post something,
and picks IR 7 for hysterical raisins.  (At least, this is how it was
explained to me... Dig out Indispensible for a thorough answer :-)

Jason R. Thorpe                                       thorpej@nas.nasa.gov
NASA Ames Research Center                               Home: 408.866.1912
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