Active Video Line (LSB) Register
From SpecNext Wiki
| Next Register Number | $1F |
|---|---|
| Readable | Yes |
| Writable | No |
| Short Description | Holds the eight LSBs of the raster line currently being drawn. |
The MSB of the raster line is in NextReg:$1E.
The line coordinates use coordinate system of Copper coprocessor, i.e. line 0 is the first line of pixels.
Since core 3.1.5 the numbering of lines can be offseted by NextReg:$64.