http://c64mags.untergrund.net/wiki/index.php?action=history&feed=atom&title=Skyhigh_13_ch17_Coders_versus_ColoursSkyhigh 13 ch17 Coders versus Colours - Revision history2026-05-18T13:44:02ZRevision history for this page on the wikiMediaWiki 1.19.0http://c64mags.untergrund.net/wiki/index.php?title=Skyhigh_13_ch17_Coders_versus_Colours&diff=2772&oldid=prevYmgve at 14:25, 26 June 20072007-06-26T14:25:49Z<p></p>
<p><b>New page</b></p><div><pre> coders versus colours<br />
<br />
<br />
<br />
<br />
well, it seems like many of the coders<br />
don't know how to set the colors right.<br />
<br />
1:st depeh tried to teach the "new guys"<br />
to set the colors right.<br />
<br />
he said that:<br />
<br />
lda col<br />
sta $d021<br />
jsr $e544 (clear screen)<br />
<br />
was the right way of setting colors<br />
but he was wrong!<br />
<br />
2:nd raz wrote in a previous issue of<br />
this mag that:<br />
(i'm not sure wich colors he used)<br />
<br />
lda #$00<br />
sta $d020 ;border color black<br />
lda #$0b<br />
sta $d021 ;screen color d.grey<br />
lda #$07<br />
sta $0286 ;char color yellow<br />
jsr $e544 ;clear screen<br />
<br />
this is not correct either.<br />
<br />
the thing is that the gfx chip<br />
workes different on old and new<br />
64's. the OLD gfx chip uses $d021<br />
to set the char color, while the<br />
NEW one uses $0286 to set char<br />
color (when using $e544) so the<br />
right way of doing it is to use<br />
BOTH addys.<br />
<br />
lda col<br />
sta $d021<br />
sta $0286<br />
jsr $e544<br />
<br />
this however works on all of them.<br />
<br />
but don't worry, everyone misses<br />
sumtimes. oxyron has missed at some<br />
point, and i'm sure that i have to.<br />
<br />
<br />
/devil of noice 1994-09-15<br />
</pre></div>Ymgve