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EOR1 (SPC700): Difference between revisions
From SnesLab
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'''EOR1''' is an [[SPC700]] instruction that performs an exclusive or between a memory bit and the [[carry flag]] and stores the sum in the carry flag. The low 13 bits of the operand specify an absolute address. The high 3 bits of the operand specify which bit at that absolute address. | '''EOR1''' is an [[SPC700]] instruction that performs an exclusive or between a memory bit and the [[carry flag]] and stores the sum in the carry flag. The low 13 bits of the operand specify an absolute address. The high 3 bits of the operand specify which bit at that absolute address. | ||
==== Syntax ==== | |||
<pre> | |||
EOR1 C, mem. bit | |||
</pre> | |||
=== See Also === | === See Also === | ||
* [[AND1]] | * [[AND1]] | ||
* [[OR1]] | * [[OR1]] | ||
* [[NOT1]] | |||
* [[MOV1]] | |||
* [[EOR]] | * [[EOR]] | ||
=== External Links === | === External Links === | ||
* Official Super Nintendo development manual on EOR1: Table C-18 in [https://archive.org/details/SNESDevManual/book1/page/n234 Appendix C-9 of Book I] | * Official Super Nintendo development manual on EOR1: Table C-18 in [https://archive.org/details/SNESDevManual/book1/page/n234 Appendix C-9 of Book I] | ||
* https://archive.org/details/SNESDevManual/book1/page/n186 | * subparagraph 8.2.3.3 of [https://archive.org/details/SNESDevManual/book1/page/n186 page 3-8-8], lbid. | ||
* anomie: https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L443 | |||
[[Category:ASM]] | [[Category:ASM]] | ||
Latest revision as of 14:00, 30 July 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Absolute Boolean Bit | 8A | 3 bytes | 5 cycles | ||||
| Flags Affected | |||||||
|---|---|---|---|---|---|---|---|
| N | V | P | B | H | I | Z | C |
| . | . | . | . | . | . | . | C |
EOR1 is an SPC700 instruction that performs an exclusive or between a memory bit and the carry flag and stores the sum in the carry flag. The low 13 bits of the operand specify an absolute address. The high 3 bits of the operand specify which bit at that absolute address.
Syntax
EOR1 C, mem. bit
See Also
External Links
- Official Super Nintendo development manual on EOR1: Table C-18 in Appendix C-9 of Book I
- subparagraph 8.2.3.3 of page 3-8-8, lbid.
- anomie: https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L443