A82: Fw: Accessing and changing stuff around in the VAT
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A82: Fw: Accessing and changing stuff around in the VAT
----- Original Message -----
From: Dines Justesen <dines@resnet.gatech.edu>
To: <assembly-82@lists.ticalc.org>
Sent: Tuesday, January 19, 1999 10:19 PM
Subject: Re: Accessing and changing stuff around in the VAT
>Asumming that you know how to derelocate your program accesing vars is
>actually fairly easy. Y-Vars are normal variables, so they can all be
>located using the normal search function listed in 82rom (The tokens are
>listed in 82var). The search functions returns a pointer to the data stored
>in y1, so accesing it is no problem. To write a new equation resize the
used
>var to the size of the new equations, and copy the data there. (All YVars
>are created at start up, and should there for always be present in the
RAM).
>
>DInes
>----- Original Message -----
>From: Doug Torrance <profzoom@hotmail.com>
>To: <assembly-82@lists.ticalc.org>
>Sent: Tuesday, January 19, 1999 3:23 PM
>Subject: A82: Accessing and changing stuff around in the VAT
>
>
>>
>>Hi guys. I haven't been doing any programming in a long time, since my
>>de-bugging of Blockbuster a couple of months ago. I've been thinking
>>that I'd like to do a math program -- symbolic differentiation. I would
>>like for the person to first enter the equation into Y=, and then the
>>program prompts them which equation they want to differentiate (Y1, Y2,
>>etc.), finds the contents of the equation, differentiates it, and spits
>>it back out, possibly writing the derivitive in another equation
>>variable, so they can graph it and everything.
>>
>>Now, my question is, how would I go about accessing the contents of Y1
>>or any of the other equation variables? And then, how would I write a
>>new equation into the VAT?
>>
>>Thanks
>>Doug Torrance
>>
>>______________________________________________________
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>>
>>
>
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