Summary

Created with the following BASICA code:

10 COLOR 7,0:CLS:DEFINT A-Z
20 LOCATE 1,1:COLOR 0,7:PRINT "80-column text on the Color/Graphics Adapter, RGB versus Composite              "
30 LOCATE 3,1:COLOR 7,0:PRINT "80-column text is difficult to read on a composite color monitor. The reason"
40                      PRINT "is that due to imperfect separation of the luma/chroma signal components,"
50                      PRINT "colorful swirls will appear around high-resolution patterns, as used in"
60                      PRINT "80-column text."
70                      PRINT "Depending on the choice of text and background color, the result may well be"
80                      PRINT "completely indecipherable:":PRINT
90 COLOR 7,0: PRINT "  Gray on black may not look pretty, but at least it's still readable.":PRINT
100 COLOR 7,1: PRINT "  Gray on blue on the other hand is a lot harder to read.":PRINT
110 COLOR 7,0: PRINT "  Finally, ";:COLOR 5,2:PRINT " magenta on green ";:COLOR 7,0:PRINT " is not legible at all on a composite monitor.":PRINT
120 PRINT "Here are all possible color combinations:"
130 FOR F=0 TO 15:FOR B=0 TO 7
140 COLOR F,B:PRINT "COLOR";
150 NEXT B:NEXT F
160 X$=INKEY$:IF X$="" THEN GOTO 160

Licensing

This work has been released into the public domain by its author, NewRisingSun at English Wikipedia. This applies worldwide. In some countries this may not be legally possible; if so: NewRisingSun grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.Public domainPublic domainfalsefalse

Original upload log

• 2009-09-09 20:56 NewRisingSun 1280×400× (204828 bytes)
• 2007-07-24 23:29 NewRisingSun 1280×400× (181472 bytes)