DBNZ (SPC700): Difference between revisions

Revision as of 20:31, 23 July 2023


Basic Info
Addressing Mode	Opcode	Length	Speed
Direct Page / Program Counter Relative	6E	3 bytes	when condition is false: 5 cycles when condition is true: 7 cycles
Implied (type 1) / Program Counter Relative	FE	2 bytes	when condition is false: 4 cycles when condition is true: 6 cycles


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

DBNZ is an SPC700 instruction that decrements a direct page location or the Y index register and then jumps if that value is nonzero.

@@ Line 42: / Line 42: @@
 |}
-'''DBNZ''' is an [[SPC700]] instruction that decrements memory or the [[Y index register]] and then jumps if that value is nonzero.
+'''DBNZ''' is an [[SPC700]] instruction that decrements a [[direct page]] location or the [[Y index register]] and then jumps if that value is nonzero.
 === See Also ===