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ADDW (SPC700): Difference between revisions

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|[[Negative Flag|N]]
|[[Overflow Flag|V]]
|[[Direct Page Flag|P]]
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|[[Half-Carry Flag|H]]
|[[Interrupt Enable Flag|I]]
|[[Zero Flag|Z]]
|[[Carry Flag|C]]
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'''ADDW''' (Add Word) is an [[SPC700]] command that adds a [[direct page]] value to [[YA]].
'''ADDW''' (Add Word) is an [[SPC700]] command that adds a 16-bit [[direct page]] value to [[YA]]. The sum is stored in YA.
 
==== Syntax ====
<pre>
ADDW YA, dp
</pre>


=== See Also ===
=== See Also ===
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=== External Links ===
=== External Links ===
* Official Super Nintendo development manual on ADDW: [https://archive.org/details/SNESDevManual/book1/page/n233 Appendix C-8 of Book I]
* Official Super Nintendo development manual on ADDW: Table C-12 in [https://archive.org/details/SNESDevManual/book1/page/n233 Appendix C-8 of Book I]
* anomie: https://github.com/yupferris/TasmShiz/blob/8fabc9764c33a7ae2520a76d80ed7220bb939f12/spc700.txt#L317


[[Category:ASM]]
[[Category:ASM]]
[[Category:SPC700]]
[[Category:SPC700]]
[[Category:16-bit Operation Commands]]
[[Category:16-bit Operation Commands]]
[[Category:Two-byte Instructions]]

Latest revision as of 13:50, 30 July 2024

Basic Info
Addressing Mode Opcode Length Speed
Direct Page 7A 2 bytes 5 cycles
Flags Affected
N V P B H I Z C
N V . . H . Z C

ADDW (Add Word) is an SPC700 command that adds a 16-bit direct page value to YA. The sum is stored in YA.

Syntax

ADDW YA, dp

See Also

External Links