Just plugged in QBIQS and switch Phoenix on. It works great with no sound glitches.   But I see some problems:   -QBIQS uses sprite masking to hide shoots and target over the bar. As F18A is set to display 32 sprites/line, the sprite masking has no effect. This behaviour was known.   -Also noticed that I can't distinguish between green colors. On the level 1of QBIQS there are some RGB cubes and the red and blue ones show three different tones, but the green cubes ar