BBC (SPC700): Difference between revisions

Revision as of 05:26, 23 July 2023


Basic Info
Addressing Mode	Opcode	Length	Speed
	13	3 byte	when condition is false: 5 cycles when condition is true: 7 cycles
	33	3 byte	when condition is false: 5 cycles when condition is true: 7 cycles
	53	3 byte	when condition is false: 5 cycles when condition is true: 7 cycles
	73	3 byte	when condition is false: 5 cycles when condition is true: 7 cycles
	93	3 byte	when condition is false: 5 cycles when condition is true: 7 cycles
	B3	3 byte	when condition is false: 5 cycles when condition is true: 7 cycles
	D3	3 byte	when condition is false: 5 cycles when condition is true: 7 cycles
	F3	3 byte	when condition is false: 5 cycles when condition is true: 7 cycles


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

BBC (Branch on Bit Clear) is an SPC700 instruction that performs a branch when the direct page flag is clear.

@@ Line 8: / Line 8: @@
 |+
 |
-|y3
+|13
+|3 byte
+|when condition is false: 5 cycles
+when condition is true: 7 cycles
+|+
+|
+|33
+|3 byte
+|when condition is false: 5 cycles
+when condition is true: 7 cycles
+|+
+|
+|53
+|3 byte
+|when condition is false: 5 cycles
+when condition is true: 7 cycles
+|+
+|
+|73
+|3 byte
+|when condition is false: 5 cycles
+when condition is true: 7 cycles
+|+
+|
+|93
+|3 byte
+|when condition is false: 5 cycles
+when condition is true: 7 cycles
+|+
+|
+|B3
+|3 byte
+|when condition is false: 5 cycles
+when condition is true: 7 cycles
+|+
+|
+|D3
+|3 byte
+|when condition is false: 5 cycles
+when condition is true: 7 cycles
+|+
+|
+|F3
 |3 byte
 |when condition is false: 5 cycles