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DIV (SPC700): Difference between revisions
From SnesLab
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|'''Speed''' | |'''Speed''' | ||
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| | |[[Implied]] (type 1) | ||
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|1 byte | |1 byte | ||
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!colspan="8"|Flags | !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 | ||
|V | |V | ||
|. | |. | ||
|. | |. | ||
| | |H | ||
|. | |. | ||
| | |Z | ||
|. | |. | ||
|} | |} | ||
'''DIV''' is an [[SPC700]] instruction that divides the value in [[YA]] by the value in the [[X index register]] and stores the quotient in the accumulator and the remainder in the [[Y index register]]. | '''DIV''' is an [[SPC700]] instruction that divides the value in [[YA]] by the value in the [[X index register]] and stores the quotient in the [[accumulator]] and the remainder in the [[Y index register]]. | ||
DIV is the slowest SPC700 opcode. To divide by a power of two, consider [[LSR (SPC700)|LSR]] instead. | |||
==== Syntax ==== | |||
<pre> | |||
DIV | |||
</pre> | |||
=== See Also === | === See Also === | ||
* [[MUL]] | * [[MUL]] | ||
* [[DIV2]] | |||
* [[ADC (SPC700)]] | |||
* [[SBC (SPC700)]] | |||
=== External Links === | === External Links === | ||
* Official Super Nintendo development manual on DIV: [https://archive.org/details/SNESDevManual/book1/page/n233 Appendix C-8 of Book I] | * Official Super Nintendo development manual on DIV: Table C-13, [https://archive.org/details/SNESDevManual/book1/page/n233 Appendix C-8 of Book I] | ||
* anomie: https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L426 | |||
* https://helmet.kafuka.org/bboard/thread.php?id=228 | |||
[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:SPC700]] | [[Category:SPC700]] | ||
[[Category:Multiplication and Division Commands]] | |||
[[Category:One-byte Instructions]] | |||
Latest revision as of 13:58, 30 July 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Implied (type 1) | 9E | 1 byte | 12 cycles | ||||
| Flags Affected | |||||||
|---|---|---|---|---|---|---|---|
| N | V | P | B | H | I | Z | C |
| N | V | . | . | H | . | Z | . |
DIV is an SPC700 instruction that divides the value in YA by the value in the X index register and stores the quotient in the accumulator and the remainder in the Y index register.
DIV is the slowest SPC700 opcode. To divide by a power of two, consider LSR instead.
Syntax
DIV
See Also
External Links
- Official Super Nintendo development manual on DIV: Table C-13, Appendix C-8 of Book I
- anomie: https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L426
- https://helmet.kafuka.org/bboard/thread.php?id=228