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Mega II Video Counters........ help!
- Subject: Mega II Video Counters........ help!
- From: vats@cis.ohio-state.edu (mudit p vats)
- Date: 26 Feb 1993 07:05:34 -0500
- Distribution: world
- Newsgroups: comp.sys.apple2
- Organization: The Ohio State University Dept. of Computer and Info. Science
Ok, here is the situation : Basically, since I had nothing better to do, I
decided to figure out just how all of these border effects are done. WELL,
I read tn-iigs-039 and that pretty much put things in perspctive for me.
I was successfully able to draw on the borders/background by using the
vertical counter........ no problem.
The problem I am having is when using the horizontal counters. Right now,
just to get it working, I am spliting the screen up in to 2 portion. The left
half is one color and the right half is another color. The tn's say that the
range for the horizantal counter is $40 - $7F...
Questions : 1. That is only a range of 64, what does each element
represent;ex. does $40 stand for a series of counts?
2. I have the tn's, and the gs hardware reference. Any
information would help in a big way! This is kind
of boggling my mind !
thanks............. !
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e-mail -> vats@magnus.acs.ohio-state.edu Mudit P. Vats CIS Eng <OSU>
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