Re: A86: wierd stuff
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Re: A86: wierd stuff
i didnt use them, some calls screw it up. the program i was working on was
yet another mem viewer but stranger things would happen, such as: when going
to the end of a ram page the string of characters in the ram would display
on the wrong line of the display and when i exited the program it would most
of the time jump to the location in ram where i was viewing when i exited
-----Original Message-----
From: Grams Family <grams@netcarrier.com>
To: assembly-86@lists.ticalc.org <assembly-86@lists.ticalc.org>
Date: Tuesday, December 30, 1997 6:49 AM
Subject: Re: A86: wierd stuff
>
>At 02:57 PM 12/29/97 -0600, you wrote:
>>
>>i think its something to do with A'F' because it happened to me too in a
>>program i made
>
>Just so everyone knows, you shouldn't use the alternate registers (the ex
>af,'af and exx instructions) because the interrupt uses them to save
>registers. So when an interrupt gets called 200 times a second, the
>alternate registers get messed up.
>
>--Joshua
>