Active Video Line (LSB) Register: Difference between revisions
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further details from Jim in forum post |
m Xalior moved page Active Video Line LSB Register to Active Video Line (LSB) Register: match formal nextreg.txt name |
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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. | 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::$1F |
|---|---|
| Readable | TBRegisterReadable::Yes |
| Writable | TBRegisterWritable::No |
| Short Description | ShortDesc::Holds the eight LSBs of the raster line currently being drawn. |
The MSB of the raster line is in {{#ask: TBRegisterNumber::$1E }} ($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 {{#ask: TBRegisterNumber::$64 }} ($64).