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SEP: Difference between revisions

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(only direct way according to E&L)
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=== External Links ===
=== External Links ===
* [[Eyes & Lichty]] page 502, on SEP: https://archive.org/details/0893037893ProgrammingThe65816/page/n528
# [[Eyes & Lichty]] page 502, on SEP: https://archive.org/details/0893037893ProgrammingThe65816/page/n528
* [[Labiak]] page 183 on SEP: https://archive.org/details/Programming_the_65816/page/n193
# [[Labiak]] page 183 on SEP: https://archive.org/details/Programming_the_65816/page/n193
* snes9x implementation of SEP: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L3203
# snes9x implementation of SEP: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L3203
* undisbeliever on SEP: https://undisbeliever.net/snesdev/65816-opcodes.html#sep-set-status-bits
# undisbeliever on SEP: https://undisbeliever.net/snesdev/65816-opcodes.html#sep-set-status-bits


[[Category:ASM]]
[[Category:ASM]]

Revision as of 03:44, 8 July 2024

Basic Info
Addressing Mode Opcode Length Speed
Immediate E2 2 bytes 3 cycles
Flags Affected
N V M X D I Z C
emulation mode . .
native mode

SEP (Set Status Bits) is a 65c816 instruction that sets bits in the status register that correspond to set bits in the operand.

SEP is the only way to set the m and x flags directly (but PLP and RTI may set them too.)

Syntax

SEP #nvmxdizc

See Also

External Links

  1. Eyes & Lichty page 502, on SEP: https://archive.org/details/0893037893ProgrammingThe65816/page/n528
  2. Labiak page 183 on SEP: https://archive.org/details/Programming_the_65816/page/n193
  3. snes9x implementation of SEP: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L3203
  4. undisbeliever on SEP: https://undisbeliever.net/snesdev/65816-opcodes.html#sep-set-status-bits