> Digital RGBI is limited by its very nature to 16 specific colors, > those also found on CGA PCs. In fact the connector on the 1901 is CGA > compatible. Ah, so each line can only be on or off for each pixel location? That would make the colours be: R G B I 0 0 0 0 Black 0 0 0 1 Dark Grey 0 0 1 0 Dark Blue 0 0 1 1 Bright Blue 0 1 0 0 Dark Green 0 1 0 1 Bright Green 0 1 1 0 Dark Cyan 0 1 1 1 Bright Cyan 1 0 0 0 Dark Red 1 0 0 1 Bright Red 1 0 1 0 Dark Magenta 1 0 1 1 Beight Magenta 1 1 0 0 Dark Yellow 1 1 0 1 Bright Yellow 1 1 1 0 Light Grey 1 1 1 1 White Ralmin.