SPRITE WRITE [#]b, x, y [,mode]
Will copy sprite #b to the display.
The destination coordinate is x and y.
The optional mode parameter defaults to 4 and specifies how the stored image data is changed as it is written out.
It is the bitwise AND of the following values:
- &B001 = mirrored left to right
- &B010 = mirrored top to bottom
- &B100 = don't copy transparent pixels