[cc65] tgi text output specification

From: Fatih Aygün <cyco1301yahoo.com>
Date: 2009-10-28 12:24:36
Hi,

I'm starting the tgi text stuff for Atari. Can someone confirm
my guesses on the exact specification and answer a couple of questions?
I don't wanna spend time and come up with an erroneous driver because of
misunderstandings :)

My understanding is:

magx and magy are supposed to be horizontal and vertical magnification. So 2,3
means each pixel in the font will be drawn as a 2x3 pixel box. Right?

dir is the direction. horizontal or vertical. And vertical doesn't mean rotated but it 
means something like this:
A
T
A
R
I
Right?

The driver implements clipping it self. Right?

The text will be drawn with the current drawing color. What about the background color?
Should it be transparent or use color 0? If the second is true, it would be nice to be able
to adjust the background color. I personally think that transparency would open up more
possibilities. It's easy to implement in the case of text drawing, at least for Atari.

Thanks in advance,
Fatih.


      
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Received on Wed Oct 28 12:25:01 2009

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