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OR (SPC700): Difference between revisions
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{| class="wikitable" style="float:right;clear:right;width:30%" | {| class="wikitable" style="float:right;clear:right;width:30%" | ||
!colspan="8"|Flags Affected | !colspan="8"|Flags Affected | ||
|+ | |||
|[[Negative Flag|N]] | |||
|[[Overflow Flag|V]] | |||
|[[Direct Page Flag|P]] | |||
|[[Break Flag|B]] | |||
|[[Half-Carry Flag|H]] | |||
|[[Interrupt Enable Flag|I]] | |||
|[[Zero Flag|Z]] | |||
|[[Carry Flag|C]] | |||
|+ | |+ | ||
|N | |N | ||
|. | |. | ||
|. | |. | ||
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|. | |. | ||
|. | |. | ||
| | |Z | ||
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'''OR''' is an [[SPC700]] instruction that performs a logical or. | '''OR''' is an [[SPC700]] instruction that performs a logical 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> | |||
OR A, #imm | |||
OR A, (X) | |||
OR A, dp | |||
OR A, dp+X | |||
OR A, !abs | |||
OR A, !abs+X | |||
OR A, !abs+Y | |||
OR A, [dp+X] | |||
OR A, [dp]+Y | |||
OR (X), (Y) | |||
OR dp<d>, dp<s> | |||
OR dp, #imm | |||
</pre> | |||
=== See Also === | === See Also === | ||
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* [[AND (SPC700)]] | * [[AND (SPC700)]] | ||
* [[EOR (SPC700)]] | * [[EOR (SPC700)]] | ||
* [[OR (Super FX)]] | |||
=== External Links === | === External Links === | ||
* Official Super Nintendo development manual on OR: Table C-8 in [https://archive.org/details/SNESDevManual/book1/page/n231 Appendix C-6 of Book I] | * Official Super Nintendo development manual on OR: Table C-8 in [https://archive.org/details/SNESDevManual/book1/page/n231 Appendix C-6 of Book I] | ||
* anomie: https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L518 | |||
[[Category:ASM]] | [[Category:ASM]] | ||
Latest revision as of 14:07, 30 July 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Immediate | 08 | 2 bytes | 2 cycles | ||||
| Implied (type 1) | 06 | 1 byte | 3 cycles | ||||
| Direct Page | 04 | 2 bytes | 3 cycles | ||||
| Direct Page Indexed by X | 14 | 2 bytes | 4 cycles | ||||
| Absolute | 05 | 3 bytes | 4 cycles | ||||
| Absolute Indexed by X | 15 | 3 bytes | 5 cycles | ||||
| Absolute Indexed by Y | 16 | 3 bytes | 5 cycles | ||||
| Direct Page Indexed by X | 07 | 2 bytes | 6 cycles | ||||
| Direct Page Indirect Indexed by Y | 17 | 2 bytes | 6 cycles | ||||
| Implied Indirect (type 1) | 19 | 1 bytes | 5 cycles | ||||
| Direct Page | 09 | 3 bytes | 6 cycles | ||||
| Direct Page Immediate | 18 | 3 bytes | 5 cycles | ||||
| Flags Affected | |||||||
|---|---|---|---|---|---|---|---|
| N | V | P | B | H | I | Z | C |
| N | . | . | . | . | . | Z | . |
OR is an SPC700 instruction that performs a logical 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
OR A, #imm OR A, (X) OR A, dp OR A, dp+X OR A, !abs OR A, !abs+X OR A, !abs+Y OR A, [dp+X] OR A, [dp]+Y OR (X), (Y) OR dp<d>, dp<s> OR dp, #imm
See Also
External Links
- Official Super Nintendo development manual on OR: Table C-8 in Appendix C-6 of Book I
- anomie: https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L518