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DI (SPC700): Difference between revisions
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'''DI''' (Disable Interrupts) is an [[SPC700]] instruction that clears the [[interrupt enable flag]]. | '''DI''' (Disable Interrupts) is an [[SPC700]] instruction that clears the [[interrupt enable flag]]. | ||
As the [[S-SMP]] has no hardware interrupt sources, DI is not very useful. | |||
No other flags are affected. | |||
==== Syntax ==== | ==== Syntax ==== | ||
| Line 43: | Line 45: | ||
DI | DI | ||
</pre> | </pre> | ||
The official manual has a typo where the [[zero flag]] is cleared instead. | |||
=== See Also === | === See Also === | ||
* [[EI]] | * [[EI]] | ||
* [[RETI]] | |||
* [[BRK (SPC700)]] | |||
* [[SEI]] | * [[SEI]] | ||
* [[CLI]] | |||
=== External Links === | === External Links === | ||
* Official Super Nintendo development manual on DI: Table C-19 in [https://archive.org/details/SNESDevManual/book1/page/n235 Appendix C-10 of Book I] | * Official Super Nintendo development manual on DI: Table C-19 in [https://archive.org/details/SNESDevManual/book1/page/n235 Appendix C-10 of Book I] | ||
* anomie: https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L424 | |||
[[Category:ASM]] | [[Category:ASM]] | ||
Latest revision as of 00:18, 14 August 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| Implied (type 2) | C0 | 1 byte | 3 cycles | ||||
| Flags Affected | |||||||
|---|---|---|---|---|---|---|---|
| N | V | P | B | H | I | Z | C |
| . | . | . | . | . | 0 | . | . |
DI (Disable Interrupts) is an SPC700 instruction that clears the interrupt enable flag.
As the S-SMP has no hardware interrupt sources, DI is not very useful.
No other flags are affected.
Syntax
DI
The official manual has a typo where the zero flag is cleared instead.
See Also
External Links
- Official Super Nintendo development manual on DI: Table C-19 in Appendix C-10 of Book I
- anomie: https://github.com/yupferris/TasmShiz/blob/master/spc700.txt#L424