Still experimenting with perspective - scaling and repeating... I'm fairly pleased now with the way this is going. Images are stamped. Looks like there is CPU to spare Turbo mode is crazy!
Ultimately for use with vanishing-point-based perspective engine. The images were created as 360x360 with transparent pixels for the background. The centers are all 180px in from the left margin. Then the width of the visible pixels in the images was counted by the code. The displayed wall is 4 units long and 1 unit high. This is not quite the right scale for most maze games. Some tweaking still