January 2nd, 2009, 09:35 PM
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 | Flow Master | | Join Date: Dec 2007 Location: Zeitgeist
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Quote:
Originally Posted by icemanind  Okay, this will be pretty elementary, I'm sure. But for some reason, I am having trouble. I am trying to write a program and I am using the following formula:
Offset = Y * 160 + X * 2
This formula works great for what I'm doing. My question is, what is the formula I use to retrieve X and Y, assuming I know Offset. For example, if Offset = 1500, what is the value of X and Y?
If it helps, what this is is X and Y coordinates for video memory. Video memory is broken down into 80x25 characters and each character takes 2 spaces.....So if I want to write to Y=10 and X=5, using my formula above, the offset to write to would be 1610.
So my question is, given 1610 as an Offset, what formula do I use to make Y=10 and X=5?
Hope this makes sense and thanks in advance
Alan | I'm afraid that the answer given by Mush appears to be how your question needs to be answered.
You could always write (or find) a computer program to implement this algorithm.
__________________ There are two things you should never try to prove: the impossible and the obvious. The greater danger for most of us lies not in setting our aim too high and falling short; but in setting our aim too low and achieving our mark. (Michelangelo Buonarroti)
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