Re: A86: Re: User Interupt routine size
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Re: A86: Re: User Interupt routine size
> Don't use IM 2. Its to messy. Just set the user bit which allows when the
> interrupt goes to 38h it will check the bit and then jump to your code.
>
> Andres Garcia
> -----Original Message-----
> From: jima@tso.cin.ix.net <jima@tso.cin.ix.net>
> To: assembly-86@lists.ticalc.org <assembly-86@lists.ticalc.org>
> Date: Tuesday, February 03, 1998 9:37 PM
> Subject: Re: A86: Re: User Interupt routine size
>
>
>
> > At 18:02 2/2/98 +0000, you wrote:
> > >
> > >You should probably put it at the end of the program's allocated
> > >memory.. It has close to 10k of space and most programs don't use
> > >nearly that much. Most of the time you should have no trouble and it
> > >not very hard.. just make a jump to like $F500 and store the actual
> > >routine there.. you could easily keep a 1k handler there but you
> > >probably should have a handler of that size because it's called 200
> > >times a second..
> > >
> > Yeah, but that might not work after the program shuts down...I think
> that's
> > why the early font programs had to be the first thing installed on the
> calc
> > to work. So unless you take out the interrupt routine when your program
> > quits, I wouldn't do that.
> >
> > --Joshua
>
> Ok, I've used interrupt mode 2 and used the memory close to $F500 to
> store the interrupt handler and interrupt lookup table and it worked
> perfectly fine. There is no real problem with this UNLESS you run a
> program bigger than about 9k.. I have tried it and it is fine to put
> it there.. I could give you the source code to my interrupt handler
> if you want. Trust me.. it works.
>
>
I wouldn't agree.. If you use im 2.. you can still set that bit to
have another routine. It's not really messy anyway.
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