BCC (Super FX): Difference between revisions

Latest revision as of 08:11, 14 July 2024


Basic Info
Addressing Mode	Opcode	Length	ROM Speed	RAM Speed	Cache Speed
Program Counter Relative	0C??	2 bytes	6 cycles	6 cycles	2 cycles


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

BCC (Branch on Carry Clear) is a Super FX instruction that performs a conditional jump. The instruction after BCC is already in the pipeline and will run even if the branch occurs.

If CY is set, BCC does not jump.

No flags are affected.

Syntax

BCC e

Example

Let the carry flag be clear. This instruction jumps the program forward 5 bytes:

 BCC $+5h

External Links

Official Nintendo documentation on BCC: 9.14 on Page 2-9-14 of Book II
example: page 2-9-15, lbid.

@@ Line 1: / Line 1: @@
-{| class="wikitable" style="float:right;clear:right;width:40%"
+{| class="wikitable" style="float:right;clear:right;width:50%"
 !colspan="8"|Basic Info
 |+
+|'''Addressing Mode'''
 |'''Opcode'''
 |'''Length'''
@@ Line 8: / Line 9: @@
 |'''Cache Speed'''
 |+
+|[[Program Counter Relative]]
 |0C??
 |2 bytes
@@ Line 18: / Line 20: @@
 !colspan="9"|Flags Affected
 |+
-|B
+|[[B Flag|B]]
 |[[ALT1]]
 |[[ALT2]]
@@ Line 24: / Line 26: @@
 |[[Sign Flag|S]]
 |[[CY]]
-|Z
+|[[Zero Flag|Z]]
 |+
 |.
@@ Line 35: / Line 37: @@
 |}
-'''BCC''' (Branch on carry clear) is a [[Super FX]] instruction that performs a conditional jump.
+'''BCC''' (Branch on Carry Clear) is a [[Super FX]] instruction that performs a conditional jump.  The instruction after BCC is already in the pipeline and will run even if the branch occurs.
 If [[CY]] is set, BCC does not jump.
+No flags are affected.
+==== Syntax ====
+<pre>
+BCC e
+</pre>
+==== Example ====
+Let the carry flag be clear.  This instruction jumps the program forward 5 bytes:
+<pre>
+ BCC $+5h
+</pre>
 === See Also ===
@@ Line 49: / Line 64: @@
 [[Category:Super FX]]
 [[Category:ASM]]
+[[Category:Instructions with Delay Slots]]