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BCC (Super FX): Difference between revisions
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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''' | ||
| Line 8: | Line 9: | ||
|'''Cache Speed''' | |'''Cache Speed''' | ||
|+ | |+ | ||
|[[Program Counter Relative]] | |||
|0C?? | |0C?? | ||
|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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|} | |} | ||
'''BCC''' (Branch on | '''BCC''' (Branch on Carry Clear) is a [[Super FX]] instruction that performs a conditional jump. The instruction after BCC is already in the pipeline and will run even if the branch occurs. | ||
If [[CY]] is set, BCC does not jump. | |||
No flags are affected. | |||
==== Syntax ==== | |||
<pre> | |||
BCC e | |||
</pre> | |||
==== Example ==== | |||
Let the carry flag be clear. This instruction jumps the program forward 5 bytes: | |||
<pre> | |||
BCC $+5h | |||
</pre> | |||
=== See Also === | === See Also === | ||
* [[BCC]] | * [[BCC]] | ||
* [[BCS (Super FX)]] | |||
=== External Links === | === External Links === | ||
* Official Nintendo documentation on BCC: [https://archive.org/details/SNESDevManual/book2/page/n170 Page 2-9-14 of Book II] | * Official Nintendo documentation on BCC: 9.14 on [https://archive.org/details/SNESDevManual/book2/page/n170 Page 2-9-14 of Book II] | ||
* example: [https://archive.org/details/SNESDevManual/book2/page/n171 page 2-9-15], lbid. | |||
[[Category:Super FX]] | [[Category:Super FX]] | ||
[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:Instructions with Delay Slots]] | |||
Latest revision as of 08:11, 14 July 2024
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | ROM Speed | RAM Speed | Cache Speed | ||
| Program Counter Relative | 0C?? | 2 bytes | 6 cycles | 6 cycles | 2 cycles | ||
| Flags Affected | ||||||||
|---|---|---|---|---|---|---|---|---|
| B | ALT1 | ALT2 | O/V | S | CY | Z | ||
| . | . | . | . | . | . | . | ||
BCC (Branch on Carry Clear) is a Super FX instruction that performs a conditional jump. The instruction after BCC is already in the pipeline and will run even if the branch occurs.
If CY is set, BCC does not jump.
No flags are affected.
Syntax
BCC e
Example
Let the carry flag be clear. This instruction jumps the program forward 5 bytes:
BCC $+5h
See Also
External Links
- Official Nintendo documentation on BCC: 9.14 on Page 2-9-14 of Book II
- example: page 2-9-15, lbid.