Difference between revisions of "LoRes X Offset Register"
From SpecNext official Wiki
m (Ped7g moved page LoRes Layer X Offset to ULA / LoRes Layer X Offset Register: Core 2.00.26 extendens scrolling capability onto ULA layer) |
(Core 2.00.26 changes) |
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| Line 3: | Line 3: | ||
|Readable=Yes | |Readable=Yes | ||
|Writable=Yes | |Writable=Yes | ||
| − | |ShortDesc=Pixel offset to use when drawing LoRes Layer. | + | |ShortDesc=Pixel offset to use when drawing ULA or LoRes Layer. |
}} | }} | ||
bits 7-0 = X Offset (0-255) (Reset to 0 after a reset) | bits 7-0 = X Offset (0-255) (Reset to 0 after a reset) | ||
| − | + | ULA screen at this moment scrolls horizontally only by whole "characters" (by multiples of 8 pixels), the low 3 bits of offset value are ignored (as of core 2.00.26, may get modified/updated in later cores to scroll per single pixel also horizontally). | |
| + | |||
| + | LoRes scrolls in "half-pixels" at the same resolution and smoothness as Layer 2. | ||
Revision as of 15:19, 31 January 2019
| Number | $32 |
|---|---|
| Readable | Yes |
| Writable | Yes |
| Short Description | Pixel offset to use when drawing ULA or LoRes Layer. |
bits 7-0 = X Offset (0-255) (Reset to 0 after a reset)
ULA screen at this moment scrolls horizontally only by whole "characters" (by multiples of 8 pixels), the low 3 bits of offset value are ignored (as of core 2.00.26, may get modified/updated in later cores to scroll per single pixel also horizontally).
LoRes scrolls in "half-pixels" at the same resolution and smoothness as Layer 2.