[A83] Re: Interrupts
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[A83] Re: Interrupts
> From: "Henk Poley" <HPoley@DDS.nl>
>
> > Van: The one and only SUCKER ... <sucker_pvn@hotmail.com>
> >
> > Does somebody know which places that are available in ram
> > on a ti-83(-) for interrupt storage?? And maybe also the
> > size it has??
>
> It seems that you want to install a standalone interrupt? Just take a
> look at other standalone interrupt programs (AsmGuru has one). I'd go for
> the APD-buffer, 768 bytes of free mem. Just make sure that you disable
> APD...
>
> I think you better not setup the IV-table in -nor use- statvars, as
> since the TIOS uses that RAM area. There is also some little interrupt
> program (from Tijl Coosemans?), don't know what it was named. Then you
> just need to make the routine and give it an appropriate header so the
> program installs the interrupt. Do note that this program is totaly
> incompatible with any shell... (as far as I know)
Ah that was some time ago. Funny you mension that program though. I've
been talking about it with somebody earlier today. Anyway, it was just an
interrupt program which ran modules. And each module could respond to key
presses before the TIOS itself interpreted the keys. You could even use
rom calls in modules... But I don't really support that program anymore.
It was merely some fun stuff I did during boring days.
Anyway, for learning how to use interrupts, you better write your own code
instead of using someone elses tools. APDram is the best place to store
your routine. You can put your routine at $8282 and your jump table at
$8400-$8500 for instance.
sea-ah,
Tijl
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