Mode 2: Difference between revisions

Latest revision as of 15:22, 18 August 2024


BG Layers Available
Layer 2	Layer 1
4bpp	4bpp

Mode 2 is very similar to Mode 1, except that Layer 3 is sacrificed to support Offset Change Mode instead of being a background. The horizontal resolution is 256 dots.

The eight palettes for BG1 and BG2 are located at CGRAM addresses 0h to 7Fh in Mode 2.^[3] Each of those palettes contains 16 colors.

Background tiles may be 8 by 8 pixels or 16 by 16 pixels in Mode 2.^[2]

Direct Color is unsupported.

Mosaic, interlacing, and windowing are supported.

References

https://nesdoug.com/2022/05/30/other-modes
Appendix A-5 of the official Super Nintendo development manual
upper right memory map in Appendix A-17, lbid

@@ Line 1: / Line 1: @@
-'''Mode 2''' supports [[Offset Change Mode]].
+{| class="wikitable" style="float:right;clear:right;width:40%"
+!colspan="4"|BG Layers Available
+|+
+| [[Layer 2]] || [[Layer 1]]
+|+
+| 4bpp || 4bpp
+|}
+'''Mode 2''' is very similar to [[Mode 1]], except that Layer 3 is sacrificed to support [[Offset Change Mode]] instead of being a background.  The horizontal resolution is 256 dots.
+The eight palettes for BG1 and BG2 are located at [[CGRAM]] addresses 0h to 7Fh in Mode 2.<sup>[3]</sup>  Each of those palettes contains 16 colors.
+Background tiles may be 8 by 8 pixels or 16 by 16 pixels in Mode 2.<sup>[2]</sup>
+[[Direct Color]] is unsupported.
+[[Mosaic]], [[interlacing]], and [[windowing]] are supported.
 === See Also ===
@@ Line 5: / Line 21: @@
 !colspan="4"|Other Background Modes
 |+
-| [[Mode 0]] || [[Mode 1]] ||            || [[Mode 3]]
+| [[Mode 0]] || [[Mode 1]] || [[Mode 2]] || [[Mode 3]]
 |+
 | [[Mode 4]] || [[Mode 5]] || [[Mode 6]] || [[Mode 7]]
 |}
-=== Reference ===
+=== References ===
-* https://nesdoug.com/2022/05/30/other-modes
+# https://nesdoug.com/2022/05/30/other-modes
+# [https://archive.org/details/SNESDevManual/book1/page/n199 Appendix A-5] of the official Super Nintendo development manual
+# upper right memory map in [https://archive.org/details/SNESDevManual/book1/page/n211 Appendix A-17], lbid
 [[Category:Video]]
+[[Category:Tiled Background Modes]]
+[[Category:Offset Change Modes]]
+[[Category:Horizontal Pseudo 512 Mode]]
+[[Category:Indirect Color Modes]]
+[[Category:Double-background Modes]]

Other Background Modes
Mode 0	Mode 1	Mode 2	Mode 3
Mode 4	Mode 5	Mode 6	Mode 7