Agnus/ Read/ Denise/ Register Address Write Paula Function -------- ------- ----- ------- -------- COLORxx 180 W D Color table xx There are 32 of these registers (xx=00-31) and they are sometimes collectively called the "color palette." They contain 12-bit codes representing red, green, and blue colors for RGB systems. One of these registers at a time is selected (by the BPLxDAT serialized video code) for presentation at the RGB video output pins. The table below shows the color register bit usage. BIT# 15,14,13,12,11,10,09,08,07,06,05,04,03,02,01,00 ----------- ----------- ----------- ----------- RGB X X X X R3 R2 R1 R0 G3 G2 G1 G0 B3 B2 B1 B0 B=blue, G=green, R=red,