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Conrad
Registered: Nov 2006
Posts: 849 |
Working with bad lines
hi.
Could someone help me with how to detect the bad lines properly and how to avoid them for raster based routines such as side borders. Would adjusting $d011 at each bad line be the best way? |
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HCL
Registered: Feb 2003
Posts: 728 |
@radiantx: Hmm, here at my place 4 sprites is maximum if you want open sideborder on a normal badline.. Also you can not use *any* 4 sprites, but only the 4 lowest priority (d015 = $f0). |
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Radiant
Registered: Sep 2004
Posts: 639 |
HCL: Really? I had a chat with Clarence about this some half a year ago, and IIRC he claimed six was the maximum, but I may be mixing things up. (Upd.: Most probably, as a more in-depth look at the timing charts reveal 4 is the maximum, and Clarence would know about these things.) |
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Oswald
Registered: Apr 2002
Posts: 5094 |
is it so hard to admit your mistake, was it nessesary to point a finger at Clarence ? |
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Conrad
Registered: Nov 2006
Posts: 849 |
HCL is right, you have to have the last 4 ($f0) sprites switched on for sideborder WITHOUT FLD (so you can make those nice sideborder DYCPs/pics/plasmas etc) and for side border with FLD (the 1001 crew way :) you have to have all 8 sprites switched on for it to work. I've never seen a demo with sideborder using SIX sprites before. |
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Radiant
Registered: Sep 2004
Posts: 639 |
Oswald: "I may be mixing things up" + "Most probably" = point a finger at Clarence? |
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Scout
Registered: Dec 2002
Posts: 1570 |
Quote: Oswald: "I may be mixing things up" + "Most probably" = point a finger at Clarence?
It's just a baaaad case of
---
8Bit Mayhem - The C64 Scenemusic Podcast
http://8bitmayhem.untergrund.net |
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Danzig
Registered: Jun 2002
Posts: 440 |
@crd: not exactly true iirc... you can use any 4 sprites but NOT sprite0 (f.e. $d015=$1e). and it is NOT necessary to use all 8 sprites for "escos"-like spriteroutines but makes sense ;)
and maybe you should f.e. take a look at this:
Spritemania
count the sprites and you will get 7 :D but ofcourse this is the good old "anti-badline" trick f.e. vision/crest used for his sideborder-dycp over sideborder-logo...
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tlr
Registered: Sep 2003
Posts: 1790 |
Exilon/MDT used that trick in Bonanza aswell. |
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Danzig
Registered: Jun 2002
Posts: 440 |
@tlr: not the same, this one is "just" opening the sideborder in the linecrunching-routine... it's NOT displaying any grafik in that area (bit 4,5 & 6 set in $d011)... that lc-sb-effect was done dozens of times (f.e. censor wonderland) |
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tlr
Registered: Sep 2003
Posts: 1790 |
Quote: @tlr: not the same, this one is "just" opening the sideborder in the linecrunching-routine... it's NOT displaying any grafik in that area (bit 4,5 & 6 set in $d011)... that lc-sb-effect was done dozens of times (f.e. censor wonderland)
Wrong part. I mean in the one with the Tetris picture with sprite scroller over.
I think it was 7 sprites but maybe it's fewer, I don't remember exactly.
EDIT: just checked, it is 7 sprites (part 2). It has some bugs, but it is that same technique.
I guess he wanted to get it released before anyone else did it. :)
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