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From: higgin@cbmvax.UUCP
Newsgroups: net.micro.amiga
Subject: Re: Manx C and interrupt handlers
Message-ID: <544@cbmvax.cbmvax.cbm.UUCP>
Date: Sat, 19-Jul-86 17:21:28 EDT
Article-I.D.: cbmvax.544
Posted: Sat Jul 19 17:21:28 1986
Date-Received: Mon, 21-Jul-86 03:10:24 EDT
References: <431@vger.UUCP>
Reply-To: higgin@cbmvax.UUCP (Paul Higginbottom)
Organization: Commodore Technology, West Chester, PA
Lines: 28
Keywords: Manx, interrupts

In article <431@vger.UUCP> waterfal@vger.UUCP (Douglas Waterfall) writes:
>I am having a tough time trying to get the input device
>to work properly.  The C code in the ROM Manual v1.1 will
>not work properly under Manx without modifications.  I was
>able to get it to work properly by saving all the registers
>in the assembly language piece before calling the handler.

Do you mean the code on 1-55 and 1-56 in RKM vol 1?  If so, I have managed
to get this to work by having my handler in assembler, getting register a4
from a1 (is_Data) as is explained in the Manx docs.

>Now
>the only problem is making ROM calls from within the interrupt
>handler.  The original code has a Forbid() and Permit() placed
>within the handler, this invariably causes the dreaded red box
>to appear.  Has anyone been able to make the code work properly?
>
>Thank
>Douglas Waterfall

I don't know what code you're referring to, because I haven't seen any
code which has Forbid()/Permit() in it, but I am calling the Signal()
routine from my handler without problems.

Hope this helps,
	Paul.

Disclaimer: Opinions are my own and I do not work for Commodore.