Extended Collision Control
This reg controls when bit planes 7 and 8 are included in collision detection, and there required state if included. Contents of this register are reset by a write to CLXCON. *BITS INITIALIZED BY RESET * *BITS INITIALIZED BY RESET *
| Bit | Function | Description |
|---|---|---|
| 15-08 | Unused | |
| 07 | ENBP8 | Enable bit plane 8 (match reqd. for collision) |
| 06 | ENBP7 | Enable bit plane 7 (match reqd. for collision) |
| 05-02 | Unused | |
| 01 | MVBP8 | Match value for bit plane 8 collision |
| 00 | MVBP7 | Match value for bit plane 7 collision |
Note: Disable bit planes cannot prevent collisions. Therefore if all bitplanes are disabled, collision will be continuous, regardless of the match values.