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LEA: Difference between revisions
From SnesLab
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'''LEA''' is a [[Super FX]] official macro that loads two immediate bytes. It is an alias for [[IWT]]. It | '''LEA''' is a [[Super FX]] official macro that loads two immediate bytes. It is an alias for [[IWT]]. It stands for "load effective address."<sup>[2]</sup> | ||
==== Syntax ==== | ==== Syntax ==== | ||
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=== External Links === | === External Links === | ||
* Official Nintendo documentation on LEA: 9.47 on [https://archive.org/details/SNESDevManual/book2/page/n223 Page 2-9-67 of Book II] | * Official Nintendo documentation on LEA: 9.47 on [https://archive.org/details/SNESDevManual/book2/page/n223 Page 2-9-67 of Book II] | ||
* Table 2-2-2 on page 2-2-8 of Book II, lbid. | |||
[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:Super FX]] | [[Category:Super FX]] | ||
[[Category:Three-byte Instructions]] | [[Category:Three-byte Instructions]] | ||
Revision as of 18:30, 8 July 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | ROM Speed | RAM Speed | Cache Speed | ||
| Immediate | Fnxxxx | 3 bytes | 9 cycles | 9 cycles | 3 cycle | ||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| B | ALT1 | ALT2 | O/V | S | CY | Z | ||
| 0 | 0 | 0 | . | . | . | . | ||
LEA is a Super FX official macro that loads two immediate bytes. It is an alias for IWT. It stands for "load effective address."[2]
Syntax
LEA Rn, #xx
See Also
External Links
- Official Nintendo documentation on LEA: 9.47 on Page 2-9-67 of Book II
- Table 2-2-2 on page 2-2-8 of Book II, lbid.