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BNE (Super FX): Difference between revisions
From SnesLab
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{| class="wikitable" style="float:right;clear:right;width: | {| class="wikitable" style="float:right;clear:right;width:50%" | ||
!colspan="8"|Basic Info | !colspan="8"|Basic Info | ||
|+ | |+ | ||
|'''Addressing Mode''' | |||
|'''Opcode''' | |'''Opcode''' | ||
|'''Length''' | |'''Length''' | ||
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|'''Cache Speed''' | |'''Cache Speed''' | ||
|+ | |+ | ||
|[[Program Counter Relative]] | |||
|08?? | |08?? | ||
|2 bytes | |2 bytes | ||
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!colspan="9"|Flags Affected | !colspan="9"|Flags Affected | ||
|+ | |+ | ||
|B | |[[B Flag|B]] | ||
|[[ALT1]] | |[[ALT1]] | ||
|[[ALT2]] | |[[ALT2]] | ||
|[[O/V]] | |[[O/V]] | ||
|S | |[[Sign Flag|S]] | ||
|[[CY]] | |[[CY]] | ||
|Z | |[[Zero Flag|Z]] | ||
|+ | |+ | ||
|. | |. | ||
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|} | |} | ||
'''BNE''' (Branch not equal) is a [[Super FX]] instruction that performs a conditional jump. | '''BNE''' (Branch not equal) is a [[Super FX]] instruction that performs a conditional jump. The instruction after BNE is already in the pipeline and will run even if the branch occurs. | ||
No flags are affected. | |||
==== Syntax ==== | |||
<pre> | |||
BNE e | |||
</pre> | |||
==== Example ==== | |||
Let the zero flag be clear. This instruction jumps the program backward 2 bytes: | |||
<pre> | |||
BNE $-2h | |||
</pre> | |||
=== See Also === | === See Also === | ||
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=== External Links === | === External Links === | ||
* Official Nintendo documentation on BNE: [https://archive.org/details/SNESDevManual/book2/page/n184 | * Official Nintendo documentation on BNE: paragraph 9.22 on [https://archive.org/details/SNESDevManual/book2/page/n184 page 2-9-28 of Book II] | ||
* example: [https://archive.org/details/SNESDevManual/book2/page/n185 page 2-9-29], lbid. | * example: [https://archive.org/details/SNESDevManual/book2/page/n185 page 2-9-29], lbid. | ||
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[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:Two-byte Instructions]] | [[Category:Two-byte Instructions]] | ||
[[Category:Instructions with Delay Slots]] | |||
Latest revision as of 08:15, 14 July 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | ROM Speed | RAM Speed | Cache Speed | ||
| Program Counter Relative | 08?? | 2 bytes | 6 cycles | 6 cycles | 2 cycles | ||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| B | ALT1 | ALT2 | O/V | S | CY | Z | ||
| . | . | . | . | . | . | . | ||
BNE (Branch not equal) is a Super FX instruction that performs a conditional jump. The instruction after BNE is already in the pipeline and will run even if the branch occurs.
No flags are affected.
Syntax
BNE e
Example
Let the zero flag be clear. This instruction jumps the program backward 2 bytes:
BNE $-2h
See Also
External Links
- Official Nintendo documentation on BNE: paragraph 9.22 on page 2-9-28 of Book II
- example: page 2-9-29, lbid.