53280

Start screen with standard colors of a C64.

A cracker intro, which has raster bars in the screen frame.

The memory address 53280 ($D020) is used for the frame color of the screen and is set under BASIC with POKE 53280,X. All 16 colors available to the C64 can be used.

The standard (start up) color of the C64 is:

• Background color: dark blue (6)
• Screenframe: light blue (14)
• Text color: also light blue (14)

Machine languages can manipulate the screen frame in order to show chars, sprites and raster bars.

Examples

10 X = X +1: IF X>15 THEN X=0
20 POKE 53280,X: POKE 646,X
30 PRINT " * C64-WIKI DEMO ";
40 FOR Z=0 TO 150: NEXT Z: GOTO 10

This C64-Wiki demo program changes the frame and text color - break with pushing the key RUN/STOP