Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!usc!ucsd!ames!vsi1!roderic
From: roderic@vicom.com (Roderic Taylor)
Newsgroups: comp.unix.wizards
Subject: Getting SIGIO to work with a homemade driver on a Sun
Message-ID: <1990Feb21.223423.20748@vicom.com>
Date: 21 Feb 90 22:34:23 GMT
Organization: Vicom Systems Inc., San Jose, CA
Lines: 12


   SunOS 4.0.3, Sun 3/160

   I am writing a simple driver to read data from an external
device.  I want SIGIO to work with this driver, so I can get
an interrupt when more data is ready to be read from the device.
How do I get that to work?  If the device generates an interrupt
which is caught by the kernel interrupt routine for the driver,
will that generate a SIGIO interrupt automatically, or do I have
to do something special in the interrupt routine myself?

                                          --Roderic T