Layer 2 X Offset MSB Register
From SpecNext official Wiki
| Number | $71 |
|---|---|
| Readable | Yes |
| Writable | Yes |
| Short Description | Sets the pixel offset used for drawing Layer 2 graphics on the screen. |
bits 7:1 = Reserved, must be 0 bit 0 = MSB of scroll amount
This is most significant bit for high resolution 320x256x8 and 640x256x4 Layer 2 modes (valid range of scroll values is then 0..319, in 640x256x4 mode the layer is scrolling by two pixels horizontally)
The low 8 bits are defined by Layer 2 X Offset Register ($16)
(introduced by core 3.0.6 (+-1))