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Forums > C64 Coding > anti badline trick
2007-07-22 17:56
Testa
Account closed

Registered: Oct 2004
Posts: 197
anti badline trick

hello, i did the anti badline trick to have open sideborders, grafix and 7 sprites and it works just nice..
simply increment $d011 to avoid badlines witch also repeats or streching charline 7..

my question is. is it posible to do the same trick but instead of streching charline 7, streching charline 6

is it posible anyway to repeat the 6 or 5 or 4 charline?

thanks a lot for reading this topic




2007-07-22 18:30
Oswald

Registered: Apr 2002
Posts: 5028
iirc you can only stretch the first and last (or only one of them?) line of a char row.
2007-07-22 18:38
Testa
Account closed

Registered: Oct 2004
Posts: 197
thanks for your reply... fucking hell only the first and last line???? i wanted to re-use the charsets by streching an other charline... to bad it is not posible...
bye bye
2007-07-22 20:03
Oswald

Registered: Apr 2002
Posts: 5028
FPP?
2007-07-22 20:50
CreaMD

Registered: Dec 2001
Posts: 3036
speculation: to have different gfx on other lines you need to switch video banks. If you don't switch video-bank you will have the same gfx on every line. Maybe I'm wrong. It's long time ago since I played with do11 tricks.
2007-07-22 21:11
chatGPZ

Registered: Dec 2001
Posts: 11148
not only videobank, but also $d018 helps =)
2007-07-22 23:19
Cruzer

Registered: Dec 2001
Posts: 1048
And if dd00+d018 isn't enough you can double the amount of gfx lines by using Xbows trick from Krestage 1 (I think) where he turned the extended bg-color mode on/off, bringing the total amount of lines up to 56. Only works in single color mode though.
2007-07-22 23:28
Oswald

Registered: Apr 2002
Posts: 5028
great, that counts already 3 people failing to read what mcd wants to do :)

i wanted to re-use the charsets by streching an other charline...
2007-07-22 23:31
chatGPZ

Registered: Dec 2001
Posts: 11148
one thing that i found very smart when figuring it out (probably long after others did =P) was that you can store the same value into d018 and dd00, ie in your rastercode its a simple
lda #something
sta $d018
sta $dd00

examining which bits in do18 and dd00 effectivly do something highly recommended ... =)

@oswald: you already answered his question in your first post, so why shouldnt we throw in some other thoughts after YOU came up with fpp? =D
2007-07-22 23:47
Oswald

Registered: Apr 2002
Posts: 5028
ok I realized what's mcd's goal is.

mcd, use sprite fpp, that will give you 256 different any place any times gfx lines. and you can make it even more than 256...
2007-07-23 06:53
HCL

Registered: Feb 2003
Posts: 717
..but only 24 chars wide gfx :(.
 
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