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RTI: Difference between revisions
From SnesLab
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Revision as of 04:43, 24 November 2023
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Stack (RTI) | 40 | 1 byte | 6 cycles* | ||||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| N | V | M | X | D | I | Z | C | |
| 65c816 native mode | ||||||||
| 6502 emulation mode | . | . | ||||||
RTI (Return from INterrupt) is a 65x instruction used to return control from an interrupt handler.
Cycle Penalty
RTI takes one additional cycle in native mode.
See Also
External Links
- Eyes & Lichty page 492, on RTI: https://archive.org/details/0893037893ProgrammingThe65816/page/n518
- Labiak page on RTI: https://archive.org/details/Programming_the_65816/page/n186
- MCS6500 Manual page on RTI: https://archive.org/details/mos_microcomputers_programming_manual/page/n152
- Carr page on RTI: https://archive.org/details/6502UsersManual/page/n283
- Leventhal page on RTI: https://archive.org/details/6502-assembly-language-programming/page/n138
- snes9x implementation of RTI: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L3272
- undisbeliever on RTI: https://undisbeliever.net/snesdev/65816-opcodes.html#rti-return-from-interrupt