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SEI: Difference between revisions
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'''SEI''' (SEt Interrupt) is a [[65c816]] instruction that disables maskable interrupts. | '''SEI''' (SEt Interrupt) is a [[65c816]] instruction that disables maskable interrupts by setting the [[interrupt disable flag]]. | ||
=== See Also === | === See Also === | ||
* [[CLI]] | * [[CLI]] | ||
* [[SEP]] | |||
* [[EI]] | * [[EI]] | ||
* [[DI]] | * [[DI]] | ||
| Line 55: | Line 56: | ||
[[Category:Inherited from 6502]] | [[Category:Inherited from 6502]] | ||
[[Category:One-byte Instructions]] | [[Category:One-byte Instructions]] | ||
[[Category:Implied Instructions]] | |||
[[Category:Two-cycle Instructions]] | |||
Latest revision as of 11:59, 14 December 2023
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Implied (type 2) | 78 | 1 byte | 2 cycles | ||||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| N | V | M | X | D | I | Z | C | |
| . | . | . | . | . | 1 | . | . | |
SEI (SEt Interrupt) is a 65c816 instruction that disables maskable interrupts by setting the interrupt disable flag.
See Also
External Links
- Eyes & Lichty page 501, on SEI: https://archive.org/details/0893037893ProgrammingThe65816/page/n527
- Labiak page 182 on SEI: https://archive.org/details/Programming_the_65816/page/n192
- MCS6500 Manual page 26 on SEI: https://archive.org/details/mos_microcomputers_programming_manual/page/n41
- Carr page 273 on SEI: https://archive.org/details/6502UsersManual/page/n286
- Leventhal page 3-95 on SEI: https://archive.org/details/6502-assembly-language-programming/page/n144
- snes9x implementation of SEI: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L1434