BEQ (Super FX): Difference between revisions

Latest revision as of 08:14, 14 July 2024


Basic Info
Addressing Mode	Opcode	Length	ROM Speed	RAM Speed	Cache Speed
Program Counter Relative	09??	2 bytes	6 cycles	6 cycles	2 cycles


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

BEQ (Branch equal) is a Super FX instruction that performs a conditional jump if the zero flag is set. The instruction after BEQ is already in the pipeline and will run even if the branch occurs.

No flags are affected.

Syntax

BEQ e

Example

Let the zero flag be set. This instruction jumps the program ahead 5 bytes:

 BEQ $+5h

External Links

Official Nintendo documentation on BEQ: paragraph 9.16 on page 2-9-18 of Book II
example: page 2-9-19, lbid.

@@ Line 26: / Line 26: @@
 |[[Sign Flag|S]]
 |[[CY]]
-|Z
+|[[Zero Flag|Z]]
 |+
 |.
@@ Line 37: / Line 37: @@
 |}
-'''BEQ''' (Branch equal) is a [[Super FX]] instruction that performs a conditional jump if the zero flag is set.
+'''BEQ''' (Branch equal) is a [[Super FX]] instruction that performs a conditional jump if the zero flag is set.  The instruction after BEQ is already in the pipeline and will run even if the branch occurs.
 No flags are affected.
+==== Syntax ====
+<pre>
+BEQ e
+</pre>
+==== Example ====
+Let the zero flag be set.  This instruction jumps the program ahead 5 bytes:
+<pre>
+ BEQ $+5h
+</pre>
 === See Also ===
@@ Line 51: / Line 62: @@
 [[Category:Super FX]]
 [[Category:ASM]]
+[[Category:Instructions with Delay Slots]]