DSP1/Project: Difference between revisions

Latest revision as of 05:30, 10 January 2024


Basic Info
Opcode	06
Speed	627 cycles 82.5 μs

Project is a DSP1 command that calculates where an object in 3D space should appear on the screen.

video of rings in Pilotwings rendered using the help of the Project command: https://youtu.be/YmEKjqgEGpE?t=894

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-'''Project''' is a DSP1 command that calculates where an object in 3D space should appear on the screen.
 {| class="wikitable" style="float:right;clear:right;width:15%"
 !colspan="8"|Basic Info
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 |'''Opcode'''
 |06
+|+
+|'''Speed'''
+|627 cycles
+.5 μs
 |}
+'''Project''' is a [[DSP1]] command that calculates where an object in 3D space should appear on the screen.
+=== Input Parameters ===
+* '''X''' is a coordinate
+* '''Y''' is a coordinate
+* '''Z''' is a coordinate
+=== Ouptut Parameters ===
+* '''H''' is the horizontal screen coordinate
+* '''V''' is the vertical screen coordinate
+* '''M''' is the enlargement ratio
 === References ===
-* https://archive.org/details/SNESDevManual/book2/page/n308
+* subparagraph 5.4.3 on [https://archive.org/details/SNESDevManual/book2/page/n308 page 3-5-18 of Book II] of the official Super Nintendo development manual
+* https://github.com/bsnes-emu/bsnes/blob/master/bsnes/sfc/coprocessor/dsp1/dsp1emu.cpp#L1123
 === External Links ===
@@ Line 15: / Line 30: @@
 [[Category:DSP1]]
+[[Category:Projection Calculation Commands]]