Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!casbah.acns.nwu.edu!nucsrl!tellab5!vpnet!sandv!VanGough
From: VanGough@sandv.UUCP (Vincent Clarke)
Newsgroups: comp.sys.m6809
Subject: GIME interrupts
Summary: Use of GIME Ints.
Message-ID: <82@sandv.UUCP>
Date: 12 Apr 91 11:42:02 GMT
Lines: 13


What is the proper way to use the interrupts for the GIME chip?  I know the
addresses (bits 5 & 4 at ff90 to enable IRQ & FIRQ respectively, bits 5-0 at
ff92-3 to pick int. type, and prog. timer at ff94-5), but have had no luck
using them.  Attempting to use the serial data input IRQ seemed to enable a
regular 60-hz int., instead of interrupting when data at the serial port
changed, as did the keyboard IRQ.  What am I doing wrong?  I disabled the
63.5 ms timer at ff00 and the 60 hz timer at ff02.  Any help is much
appreciated.

       V   V
        V V  an Gough
         v