[atari7800] Re: Mode 160B now almost works for me...
- From: Manuel Rotschkar <cybergoth@xxxxxxxx>
- To: atari7800@xxxxxxxxxxxxx
- Date: Mon, 01 Nov 2004 16:51:10 +0100
Hi there!
Ok, after much sweating I get now something displayed, that (colors aside)
is already very close to the orignal picture I started with.
There's still some issues though. I attached a screenshot, where you can
see what I mean. There's a flaw in the head of the snake and there's also
some garbage in the "u" of Rogue. And also there's those weird orange
lines.
Well, I think my data is ok this time, so I fear the problem resides on
the 7800 side of things again.
After some research, I found that these flaws happen, where I cross a 4K
block within a DL, as in:
.byte $E0,%11000000,$90,%10001001,0
.byte $F0,%11000000,$90,%10001001,32
.byte $00,%11000000,$A0,%10001001,64
.byte $10,%11000000,$A0,%10001001,96
.byte $20,%11000000,$A0,%10001001,128
.byte $00,$00
The zone here where I'm switching from $90XX to $A0XX is precisely the
head of the snake.
Anyone have an idea what I'm doing wrong here? I'm crossing no page
boundries here...
Greetings,
Manuel
Attachment:
rogue.png
Description: PNG image
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