Re: A86: asm clock?

To: <assembly-86@lists.ticalc.org>
Subject: Re: A86: asm clock?
From: "Dux Gregis" <assets@eden.rutgers.edu>
Date: Thu, 17 Sep 1998 15:02:51 -0400
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>
>-----Original Message-----
>From: Dux Gregis <assets@eden.rutgers.edu>
>To: assembly-86@lists.ticalc.org <assembly-86@lists.ticalc.org>
>Date: Thursday, September 17, 1998 1:11 PM
>Subject: Re: A86: asm clock?
>
>
>>
>>
>>
>>
>>
>>>
>>>-----Original Message-----
>>>From: Dux Gregis <assets@eden.rutgers.edu>
>>>To: assembly-86@lists.ticalc.org <assembly-86@lists.ticalc.org>
>>>Date: Wednesday, September 16, 1998 10:25 PM
>>>Subject: Re: A86: asm clock?
>>>
>>>
>>>>
>>>>
>>>>Try using the user interrupt routine to see if it works.  If not, the
>calc
>>>>could be running a nmi (the only time it could run one is during a halt
>>>>because 66h doesn't exchange shadow registers).
>>>>
>>>>
>>>       I don't think TI calcs can run nmi's at all.  At least, that is
>what
>>>Matt Johnson says
>>
>>He understands that nmi can't controlled by software.  It's possible that
>>you can put a byte out port 3 to enable them.
>>
>>
>        Cool!  Could nmi's have any use in programs???


Well, I don't know if they are on the calc, but if they were, they would be
of no use to asm programmer except to explain why strange things
occasionally happen with interrupts.

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