Pacman test ROM - philmurr 05/20

Fits at location 6E

Tests programme, colour, video and sprite RAM 1 (note sprite RAM 2 is write-only)
Displays sprites dropping from screen to show sprite select and addressing is working (tries to show all 8 but most boards only have 6)
Shows real-time status of inputs and DIPs

Colour RAM - 4P, 4L
Prog RAM - 4R, 4M
Video RAM - 4N, 4K

Sprite RAM 1 - part of 4R,4M but may make it clearer to people when testing

