Sprite Attribute 2 Register: Difference between revisions

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Core 2.00.22 changes, and forum knowledge from Jim Bagley distilled.
 
m Xalior moved page Sprite port-mirror Attribute 2 Register to Sprite Attribute 2 Register: match formal nextreg.txt name
 
(2 intermediate revisions by 2 users not shown)
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| 1 || Enable rotation
| 1 || Enable rotation
|-
|-
| 0 || MSB of X coordinate
| 0 || '''anchor''' sprite: MSB of X coordinate<br />
'''relative''' sprite: enable relative Palette offset (1 = the anchor Palette offset is added, 0 = independent Palette offset)
|}
|}

Latest revision as of 10:52, 14 October 2025

Next Register Number $37
Readable No
Writable Yes
Short Description Nextreg port-mirror to write directly into "byte 3" of IO:$xx57.

Byte 3 is bitmapped:

Bit Description
4-7 Palette offset, added to each palette index from pattern before drawing
3 Enable X mirror
2 Enable Y mirror
1 Enable rotation
0 anchor sprite: MSB of X coordinate

relative sprite: enable relative Palette offset (1 = the anchor Palette offset is added, 0 = independent Palette offset)