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EOR (SPC700): Difference between revisions
From SnesLab
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'''EOR''' is an [[SPC700]] instruction that performs an exclusive or. | '''EOR''' is an [[SPC700]] instruction that performs an exclusive or. | ||
The operands are stored in the instruction stream in the opposite order they appear in the assembler source. In the assembler source, the operand on the right is the source and the operand on the left is the destination. | The operands are stored in the instruction stream in the opposite order they appear in the assembler source. In the assembler source, the operand on the right is the source and the operand on the left is the destination. | ||
==== Syntax ==== | |||
<pre> | |||
EOR A, #imm | |||
EOR A, (X) | |||
EOR A, dp | |||
EOR A, dp+X | |||
EOR A, !abs | |||
EOR A, !abs+X | |||
EOR A, !abs+Y | |||
EOR A, [dp+X] | |||
EOR A, [dp]+Y | |||
EOR (X), (Y) | |||
EOR dp<d>, dp<s> | |||
EOR dp, #imm | |||
</pre> | |||
=== See Also === | === See Also === | ||
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=== External Links === | === External Links === | ||
* Official Super Nintendo development manual on EOR: [https://archive.org/details/SNESDevManual/book1/page/n231 Appendix C-6 of Book I] | * Official Super Nintendo development manual on EOR: [https://archive.org/details/SNESDevManual/book1/page/n231 Appendix C-6 of Book I] | ||
* anomie: https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L430 | |||
[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:SPC700]] | [[Category:SPC700]] | ||
[[Category:8-bit Logic Operation Commands]] | [[Category:8-bit Logic Operation Commands]] | ||
Latest revision as of 13:59, 30 July 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Immediate | 48 | 2 bytes | 2 cycles | ||||
| Implied Indirect (type 2) | 46 | 1 byte | 3 cycles | ||||
| Direct Page | 44 | 2 bytes | 3 cycles | ||||
| Direct Page Indexed by X | 54 | 2 bytes | 4 cycles | ||||
| Absolute | 45 | 3 bytes | 4 cycles | ||||
| Absolute Indexed by X | 55 | 3 bytes | 5 cycles | ||||
| Absolute Indexed by Y | 56 | 3 bytes | 5 cycles | ||||
| Direct Page Indexed Indirect by X | 47 | 2 bytes | 6 cycles | ||||
| Direct Page Indirect Indexed by Y | 57 | 2 bytes | 6 cycles | ||||
| Implied Indirect (type 1) | 59 | 1 bytes | 5 cycles | ||||
| Direct Page | 49 | 3 bytes | 6 cycles | ||||
| Direct Page Immediate | 58 | 3 bytes | 5 cycles | ||||
| Flags Affected | |||||||
|---|---|---|---|---|---|---|---|
| N | V | P | B | H | I | Z | C |
| N | . | . | . | . | . | Z | . |
EOR is an SPC700 instruction that performs an exclusive or.
The operands are stored in the instruction stream in the opposite order they appear in the assembler source. In the assembler source, the operand on the right is the source and the operand on the left is the destination.
Syntax
EOR A, #imm EOR A, (X) EOR A, dp EOR A, dp+X EOR A, !abs EOR A, !abs+X EOR A, !abs+Y EOR A, [dp+X] EOR A, [dp]+Y EOR (X), (Y) EOR dp<d>, dp<s> EOR dp, #imm
See Also
External Links
- Official Super Nintendo development manual on EOR: Appendix C-6 of Book I
- anomie: https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L430