RTS: Difference between revisions

Revision as of 03:30, 10 August 2024


Basic Info
Addressing Mode	Opcode	Length	Speed
Stack (RTS)	60	1 byte	6 cycles


Flags Affected
N	V	M	X	D	I	Z	C
.	.	.	.	.	.	.	.

RTS (Return from Subroutine) is a 65x instruction used to return control from a subroutine that was called from the same bank.

RTS pulls the return address from the stack, but increments the value by one before loading it into the program counter.

No flags are affected.

RTS

Forgetting to RTS can cause derailment as control falls through the end of the subroutine into the next one or garbage.

@@ Line 35: / Line 35: @@
 |}
-'''RTS''' (Return from Subroutine) is a [[65c816]] instruction used to return control from a subroutine that was called from the same [[bank]].
+'''RTS''' (Return from Subroutine) is a 65x instruction used to return control from a subroutine that was called from the same [[bank]].
 RTS pulls the [[return address]] from the [[stack]], but increments the value by one before loading it into the [[program counter]].