Difference between revisions of "Active Video Line MSB Register"
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(further details from Jim in forum post) |
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|ShortDesc=Holds the MSB (only, as bit 0) of the raster line currently being drawn. | |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. | ||
Revision as of 19:55, 1 January 2019
| 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 Active Video Line LSB Register ($1F).
The line coordinates use coordinate system of Copper coprocessor, i.e. line 0 is the first line of pixels.