Path: utzoo!attcan!utgpu!watmath!iuvax!purdue!gatech!hubcap!rchampe
From: rchampe@hubcap.clemson.edu (Richard Champeaux)
Newsgroups: comp.os.os9
Subject: OS-9 68k interrupts
Message-ID: <6472@hubcap.clemson.edu>
Date: 15 Sep 89 16:37:08 GMT
Organization: Clemson University, Clemson, SC
Lines: 14

How does OS-9 68k deal with interrupts.  For instance, say some user adds
some gadget to the system and want's it to produce an interrupt.  How would
the user install his interrupt handler into the system.  The interrupt
vectors are down in low memory where I imagine the OS-9 kernel ROM is, and
therefore can't be changed.  Does OS-9 have hooks in it to get around this?
For example, do the interrupt vectors point to some routine which would then
jump to the interrupt handler?

I just need a general description of the process, not the actual system calls.
My thesis of the moment involves designing a system that OS-9 will eventually
ported to and right now I don't have any info about OS-9.

Thanks,
Rich Champeaux  (rchampe@hubcap.clemson.edu)