DIV2 (Super FX): Difference between revisions

Latest revision as of 02:53, 16 December 2023


Basic Info
Opcode	Length	ROM Speed	RAM Speed	Cache Speed
3D96	2 bytes	6 cycles	6 cycles	2 cycles


Flags Affected
B	ALT1	ALT2	O/V	S	CY	Z
0	0	0	.

DIV2 (DIVide by 2) is a Super FX instruction that shifts the value of the source register's bits one place to the right while also leaving the most significant bit unchanged, storing the result in the destination register. The source register itself is left unchanged. Unlike ASR, the output becomes zero if the input is 0xFFFF.

External Links

Official Nintendo documentation on DIV2: Page 2-9-44 of Book II
example: page 2-9-45, lbid.

@@ Line 35: / Line 35: @@
 |}
-'''DIV2''' (DIVide by 2)  is a [[Super FX]] instruction that shifts a register's bits one place to the right while also leaving the most significant bit unchanged. Unlike [[ASR]], the output becomes zero if the input is 0xFFFF.
+'''DIV2''' (DIVide by 2)  is a [[Super FX]] instruction that shifts the value of the [[source register]]'s bits one place to the right while also leaving the most significant bit unchanged, storing the result in the [[destination register]].  The source register itself is left unchanged.  Unlike [[ASR]], the output becomes zero if the input is 0xFFFF.
 === See Also ===
@@ Line 45: / Line 45: @@
 === External Links ===
 * Official Nintendo documentation on DIV2: [https://archive.org/details/SNESDevManual/book2/page/n200 Page 2-9-44 of Book II]
+* example: [https://archive.org/details/SNESDevManual/book2/page/n201 page 2-9-45], lbid.
 [[Category:ASM]]
 [[Category:Super FX]]
 [[Category:Arithmetic Operation Instructions]]
+[[Category:Two-byte Instructions]]