BCS (SPC700): Difference between revisions

Latest revision as of 15:26, 14 August 2024


Basic Info
Addressing Mode	Opcode	Length	Speed
Program Counter Relative	B0	2 bytes	when condition false: 2 cycles when condition true: 4 cycles


Flags Affected
N	V	P	B	H	I	Z	C
.	.	.	.	.	.	.	.

BCS is an SPC700 instruction that performs a branch when the carry flag is set. If the carry flag is clear, control simply falls through BCS to the next instruction.

No flags are affected.

Syntax

BCS rel

Where rel is a two's complement offset.

External Links

Official Super Nintendo development manual on BCS: Table C-15, Appendix C-8 of Book I
anomie: https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L359

@@ Line 7: / Line 7: @@
 |'''Speed'''
 |+
-|relative
+|[[Program Counter Relative]]
 |B0
 |2 bytes
@@ Line 36: / Line 36: @@
 |}
-'''BCS''' is an [[SPC700]] instruction that performs a branch when the [[carry flag]] is set.
+'''BCS''' is an [[SPC700]] instruction that performs a branch when the [[carry flag]] is set.  If the carry flag is clear, control simply falls through BCS to the next instruction.
+No flags are affected.
+==== Syntax ====
+<pre>
+BCS rel
+</pre>
+Where rel is a two's complement offset.
 === See Also ===
@@ Line 43: / Line 52: @@
 === External Links ===
-* Official Super Nintendo development manual on BCS: [https://archive.org/details/SNESDevManual/book1/page/n234 Appendix C-8 of Book I]
+* Official Super Nintendo development manual on BCS: Table C-15, [https://archive.org/details/SNESDevManual/book1/page/n233 Appendix C-8 of Book I]
+* anomie: https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L359
 [[Category:ASM]]
 [[Category:SPC700]]
 [[Category:Branching Commands]]
+[[Category:Two-byte Instructions]]