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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]].


The manual has a typo where the flag which is cleared is in the [[zero flag]]'s position instead.
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