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SEI: Difference between revisions

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(→‎External Links: hid archive URL for Carr)
(No other flags are affected)
 
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SEI is recommened by some tutorials to be one of the first instructions run after the SNES comes out of reset so a game can boot properly without interruption.
SEI is recommened by some tutorials to be one of the first instructions run after the SNES comes out of reset so a game can boot properly without interruption.
No other flags are affected.


==== Syntax ====
==== Syntax ====
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* [[Eyes & Lichty]], [https://archive.org/details/0893037893ProgrammingThe65816/page/501 page 501] on SEI
* [[Eyes & Lichty]], [https://archive.org/details/0893037893ProgrammingThe65816/page/501 page 501] on SEI
* [[Labiak]], [https://archive.org/details/Programming_the_65816/page/n192 page 182] on SEI
* [[Labiak]], [https://archive.org/details/Programming_the_65816/page/n192 page 182] on SEI
* [[MCS6500 Manual]] page 26 on SEI: https://archive.org/details/mos_microcomputers_programming_manual/page/n41
* 3.2.1 on [[MCS6500 Manual]], [https://archive.org/details/mos_microcomputers_programming_manual/page/n41 page 26] on SEI
* [[Carr]], [https://archive.org/details/6502UsersManual/page/n286 page 273] on SEI
* [[Carr]], [https://archive.org/details/6502UsersManual/page/n286 page 273] on SEI
* [[Leventhal]] page 3-95 on SEI: https://archive.org/details/6502-assembly-language-programming/page/n144
* [[Leventhal]], [https://archive.org/details/6502-assembly-language-programming/page/n144 page 3-95] on SEI
* snes9x implementation of SEI: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L1434
* snes9x implementation of SEI: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L1434



Latest revision as of 23:12, 8 August 2024

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.

SEI is recommened by some tutorials to be one of the first instructions run after the SNES comes out of reset so a game can boot properly without interruption.

No other flags are affected.

Syntax

SEI

See Also

External Links