LoRes X Scroll Register: Difference between revisions

From SpecNext Wiki
Jump to: navigation, search
Core 2.00.26 changes
m Xalior moved page LoRes X Offset Register to LoRes X Scroll Register: match formal nextreg.txt name
 
(4 intermediate revisions by 2 users not shown)
Line 3: Line 3:
|Readable=Yes
|Readable=Yes
|Writable=Yes
|Writable=Yes
|ShortDesc=Pixel offset to use when drawing ULA or LoRes Layer.
|ShortDesc=Pixel X offset (0..255) to use when drawing 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.
LoRes scrolls in "half-pixels" at the same resolution and smoothness as Layer 2.

Latest revision as of 10:48, 14 October 2025

Number TBRegisterNumber::$32
Readable TBRegisterReadable::Yes
Writable TBRegisterWritable::Yes
Short Description ShortDesc::Pixel X offset (0..255) to use when drawing LoRes Layer.

bits 7-0 = X Offset (0-255) (Reset to 0 after a reset)

LoRes scrolls in "half-pixels" at the same resolution and smoothness as Layer 2.