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SEI: Difference between revisions
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''' | {| class="wikitable" style="float:right;clear:right;width:40%" | ||
!colspan="8"|Basic Info | |||
|+ | |||
|'''Addressing Mode''' | |||
|'''Opcode''' | |||
|'''Length''' | |||
|'''Speed''' | |||
|+ | |||
|[[Implied]] (type 2) | |||
|78 | |||
|1 byte | |||
|2 cycles | |||
|} | |||
{| class="wikitable" style="float:right;clear:right;width:30%" | {| class="wikitable" style="float:right;clear:right;width:30%" | ||
!colspan="9"|Flags | !colspan="9"|Flags Affected | ||
|+ | |+ | ||
|N | |[[Negative Flag|N]] | ||
|V | |[[Overflow Flag|V]] | ||
|M | |[[M Flag|M]] | ||
|X | |[[X Flag|X]] | ||
|D | |[[Decimal Flag|D]] | ||
|I | |[[I Flag|I]] | ||
|Z | |[[Zero Flag|Z]] | ||
|C | |[[Carry Flag|C]] | ||
|+ | |+ | ||
|. | |. | ||
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|. | |. | ||
|} | |} | ||
'''SEI''' (SEt Interrupt) is a [[65c816]] instruction that disables maskable interrupts by setting the [[interrupt disable flag]]. | |||
=== See Also === | |||
* [[CLI]] | |||
* [[SEP]] | |||
* [[EI]] | |||
* [[DI]] | |||
* [[IRQ]] | |||
* [[RTI]] | |||
=== 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 | |||
[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:Inherited from 6502]] | |||
[[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