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ADDW (SPC700): Difference between revisions
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'''ADDW''' (Add Word) is an [[SPC700]] command that adds a 16-bit [[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 ==== | ==== Syntax ==== | ||
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=== External Links === | === External Links === | ||
* 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] | * 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]] | ||
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
- Official Super Nintendo development manual on ADDW: Table C-12 in Appendix C-8 of Book I
- anomie: https://github.com/yupferris/TasmShiz/blob/8fabc9764c33a7ae2520a76d80ed7220bb939f12/spc700.txt#L317