Clip Window Control Register
From SpecNext Wiki
| Number | TBRegisterNumber::$1C |
|---|---|
| Readable | TBRegisterReadable::Yes |
| Writable | TBRegisterWritable::Yes |
| Short Description | ShortDesc::Controls (resets) the clip-window registers indices. |
| Bit | Function |
|---|---|
| 7-3 | Reserved, must be 0 |
| 2 | reset the ULA/LoRes clip-window register index (by writing 1). |
| 1 | reset the Sprite clip-window register index (by writing 1). |
| 0 | reset the Layer 2 clip-window register index (by writing 1). |
Read: ! Bit !! Function |- | 7-6 || Reserved |- | 5-4 || the current Layer 2 clip-window register index |- | 3-2 || the current Sprite clip-window register index |- | 1-0 || the current ULA/LoRes clip-window register index |}
Each read index maps as 0: X1, 1: X2, 2: Y1 and 3: Y2 (the same order how the coordinates are read/written to particular clip-window register).