| 7 | Enable lores mode (soft reset = 0) |
| 6 | Sprite priority (1 = sprite 0 on top, 0 = sprite 127 on top) (soft reset = 0) |
| 5 | Enable sprite clipping in over border mode (soft reset = 0) |
| 4:2 | Set layer priority (eg SLU = sprites over layer 2 over ula) (soft reset = 000)
000 - S L U
001 - L S U
010 - S U L
011 - L U S
100 - U S L
101 - U L S
110 - (U|T)S(T|U)(B+L) Blending layer and Layer 2 combined, colours clamped to [0,7]
111 - (U|T)S(T|U)(B+L-5) Blending layer and Layer 2 combined, colours clamped to [0,7] |
| 1 | Enable sprites over border (soft reset = 0) |
| 0 | Enable sprites (soft reset = 0) |