RE: LZ: Another Question

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RE: LZ: Another Question

Hmm... but i am using the points for the line algorthim and in the 
documentation it shows $4030 as the starting point 40,30?


----------
From: 	owner-list-zshell@lists.ticalc.org on behalf of C.J. Oster
Sent: 	Thursday, October 17, 1996 12:34 AM
To: 	list-zshell@lists.ticalc.org
Subject: 	RE: LZ: Another Question


>Do you need to do hex conversions?
>
>Ex. if i wanted the point 20,20 in HL would it be $2020 or $07E4 and if it is
>the first way how would i store the point 120,20 as $12020 or what?
>


You only wish it were that easy.  Ok, you take your point, 20,20, and say 
this.


Address = (baseVRamAddrr) + (Vert)*(lineWidth) + Horiz
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ all in HEX!


I'd tell you the actual address, but I can't remember the base vram addr,
it's been a long time since I wrote a program.




                                        -C.J.-






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