Re: A86: asm clock?

To: <assembly-86@lists.ticalc.org>
Subject: Re: A86: asm clock?
From: "JBrett" <tbarwick@esn.net>
Date: Wed, 16 Sep 1998 22:32:01 -0400
Delivered-To: assembly-86-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: assembly-86@lists.ticalc.org


-----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
>>
>>In the clock program I wrote, I did use IM 2.  But I could have easily
used
>>IM 1, that doesn't matter.  I just wrote it really quickly to test out the
>>idea of a clock.  But before we talk about this anymore, I would like to
>>get one thing straight.
>>
>>EXACTLY what happens when the calc is turned off?  I don't want to know
>>what you *think* happens, I want to know what actually happens.  This is
>>only because of all the rumors going around.  If anyone has dissassembled
>>the off routine and has a copy, I'd like to see that.
>>
>>Thanks.
>>
>>At 04:09 PM 9/16/98 -0400, you wrote:
>>>>-----Original Message-----
>>>>From: David Phillips <electrum@tfs.net>
>>>>To: assembly-86@lists.ticalc.org <assembly-86@lists.ticalc.org>
>>>>Date: Sunday, September 13, 1998 4:42 PM
>>>>Subject: Re: A86: asm clock?
>>>>
>>>>
>>>>>
>>>>>One more thing I thought of...
>>>>>
>>>>>This program would be useful for getting the emulator to run exactly at
>>>the
>>>>>same speed as your calc.  But besides that, I don't think a clock is
>>>>>possible or feasible, because you can't shut off the calc and have it
>>>still
>>>>>work.
>>>>
>>>>    Actually, I am pretty sure that interrupts run when the calc is off,
>>>>too.  I think it is to check for the ON key.
>>>
>>>That's true, but he used interrupt mode 2 and I don't think it will run
>when
>>>the calc is turned off.  I think that calc switches to im 1 as it turns
>off.
--------------
Jbrett
tbarwick@esn.net
http://ww2.esn.net/~tbarwick
I just added a TI-86 page, Check it out!!!