Active Video Line (MSB) Register: Difference between revisions
From SpecNext Wiki
No edit summary |
m Xalior moved page Active Video Line MSB Register to Active Video Line (MSB) Register: match formal nextreg.txt name |
||
| (5 intermediate revisions by 4 users not shown) | |||
| Line 3: | Line 3: | ||
|Readable=Yes | |Readable=Yes | ||
|Writable=No | |Writable=No | ||
|ShortDesc=Holds the MSB (only, as bit 0) of the raster line currently being drawn. | |||
}} | }} | ||
The low 8 bit part of the raster line number is in {{NextRegNo|$1F}}. | |||
The line coordinates use coordinate system of [https://gitlab.com/thesmog358/tbblue/blob/master/docs/extra-hw/copper/COPPER-v0.1c.TXT 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 {{NextRegNo|$64}}. | |||
Latest revision as of 17:32, 13 October 2025
| Next Register Number | $1E |
|---|---|
| Readable | Yes |
| Writable | No |
| Short Description | Holds the MSB (only, as bit 0) of the raster line currently being drawn. |
The low 8 bit part of the raster line number is in NextReg:$1F.
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.