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GETB (Super FX): Difference between revisions
From SnesLab
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|B | |B | ||
|ALT1 | |[[ALT1]] | ||
|ALT2 | |[[ALT2]] | ||
|O/V | |[[O/V]] | ||
|S | |S | ||
|CY | |[[CY]] | ||
|Z | |Z | ||
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'''GETB''' (Get Byte) is a [[Super FX]] instruction that loads one byte from the ROM buffer. | '''GETB''' (Get Byte) is a [[Super FX]] instruction that loads one byte from the [[ROM buffer]] into the low byte of the [[destination register]]. The high byte of the destination register is zeroed. | ||
=== See Also === | === See Also === | ||
* [[GETBH]] | * [[GETBH]] | ||
* [[GETBS]] | * [[GETBS]] | ||
* [[ROMB]] | |||
=== External Links === | === External Links === | ||
* Official Super Nintendo development manual on GETB: [https://archive.org/details/SNESDevManual/book2/page/n205 Page 2-9-49 of Book II] | * Official Super Nintendo development manual on GETB: 9.35 on [https://archive.org/details/SNESDevManual/book2/page/n205 Page 2-9-49 of Book II] | ||
* example: [https://archive.org/details/SNESDevManual/book2/page/n206 page 2-9-50 of Book II], lbid | |||
[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:Super FX]] | [[Category:Super FX]] | ||
[[Category:Data Transfer Instructions]] | [[Category:Data Transfer Instructions]] | ||
[[Category:One-byte Instructions]] | |||
Latest revision as of 11:38, 21 December 2023
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Opcode | Length | ROM Speed | RAM Speed | Cache Speed | |||
| EF | 1 byte | 3 to 8 cycles | 3 to 9 cycles | 1 to 6 cycle | |||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| B | ALT1 | ALT2 | O/V | S | CY | Z | ||
| 0 | 0 | 0 | . | . | . | . | ||
GETB (Get Byte) is a Super FX instruction that loads one byte from the ROM buffer into the low byte of the destination register. The high byte of the destination register is zeroed.
See Also
External Links
- Official Super Nintendo development manual on GETB: 9.35 on Page 2-9-49 of Book II
- example: page 2-9-50 of Book II, lbid