Clip Window Sprites Register

Number	$19
Readable	Yes
Writable	Yes
Short Description	Sets and reads clip-window for Sprites

1. read/write: X1 position
2. read/write: X2 position
3. read/write: Y1 position
4. read/write: Y2 position

The values are 0,255,0,191 after a Reset.

Clip window on Sprites works by default only when the "draw over border" is disabled. With "over border" enabled, the clip window must be enabled extra by bit 5 in Sprite and Layers System Register ($15), and X-axis coordinates of clip-window are then doubled, see the Sprite and Layers System Register ($15) for details and example.

The current read/write index (which coordinate is next) can be read or reset by Clip Window Control Register ($1C).