Active Video Line (MSB) Register: Difference between revisions
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m Xalior moved page Active Video Line MSB Register to Active Video Line (MSB) Register: match formal nextreg.txt name |
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{{NextRegister | {{NextRegister | ||
|Number=$ | |Number=$1E | ||
|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
| Number | TBRegisterNumber::$1E |
|---|---|
| Readable | TBRegisterReadable::Yes |
| Writable | TBRegisterWritable::No |
| Short Description | 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 {{#ask: TBRegisterNumber::$1F }} ($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 {{#ask: TBRegisterNumber::$64 }} ($64).