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RTS
From SnesLab
| 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.
Syntax
RTS
Forgetting to RTS can cause derailment as control falls through the end of the subroutine into the next one or garbage.
See Also
External Links
- Eyes & Lichty, page 496 on RTS
- Labiak, page 178 on RTS
- 8.2 on MCS6500 Manual, page 108 on RTS
- Carr, page 271 on RTS
- Leventhal, page 3-90 on RTS
- snes9x implementation of RTS: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L2982
- Pickens, John. http://www.6502.org/tutorials/6502opcodes.html#RTS
- Clark, Bruce. http://www.6502.org/tutorials/65c816opcodes.html#6.2.2.2