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Source Register: Difference between revisions

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The '''Source Register''' (S<sub>reg</sub>) exists on the [[Super FX]].  It is assigned with [[FROM]].  It supplies the input for many instructions, including:
The '''Source Register''' (S<sub>reg</sub>) exists on the [[Super FX]].  It is assigned with [[FROM]] or [[WITH]].  It supplies the input for many instructions, including:


* ADC R<sub>n</sub>
* [[ADC (Super FX)|ADC]] R<sub>n</sub>
* ADC #n
* [[ADC (Super FX)|ADC]] #n
* ADD R<sub>n</sub>
* [[ADD]] R<sub>n</sub>
* ADD #n
* [[ADD]] #n
* AND R<sub>n</sub>
* [[AND (Super FX)|AND]] R<sub>n</sub>
* AND #n
* [[AND (Super FX)|AND]] #n
* [[ASR]]
* [[ASR]]
* [[BIC]] R<sub>n</sub>
* [[BIC]] R<sub>n</sub>
* [[BIC]] #n
* [[BIC]] #n
* [[CMODE]]
* [[CMODE]]
* CMP R<sub>n</sub>
* [[CMP (Super FX)|CMP]] R<sub>n</sub>
* [[COLOR (Super FX)|COLOR]]
* [[COLOR (Super FX)|COLOR]]
* [[DIV2]]
* [[DIV2]]
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* [[LMULT]]
* [[LMULT]]
* [[LOB]]
* [[LOB]]
* LSR
* [[LSR (Super FX)|LSR]]
* [[MULT]] R<sub>n</sub>
* [[MULT]] R<sub>n</sub>
* [[MULT]] #n
* [[MULT]] #n
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* [[OR]] #n
* [[OR]] #n
* [[RAMB]]
* [[RAMB]]
* ROL
* [[ROL (Super FX)|ROL]]
* [[ROMB]]
* [[ROMB]]
* ROR
* [[ROR (Super FX)|ROR]]
* SBC R<sub>n</sub>
* [[SBC (Super FX)|SBC]] R<sub>n</sub>
* [[SBK]]
* [[SBK]]
* [[SEX]]
* [[SEX]]
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* [[STW]]
* [[STW]]
* [[SUB]] R<sub>n</sub>
* [[SUB]] R<sub>n</sub>
* SUB #n
* [[SUB]] #n
* [[SWAP]]
* [[SWAP]]
* [[UMULT]]
* [[UMULT]]
Any register from R<sub>0</sub> to R<sub>15</sub> can serve as S<sub>reg</sub>.  R<sub>0</sub> is the default.
Some instructions ignore the source register.  No instructions modify its value.


=== See Also ===
=== See Also ===
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[[Category:Registers]]
[[Category:Registers]]
[[Category:Super FX]]
[[Category:Super FX]]
[[Category:ASM]]

Latest revision as of 20:11, 4 August 2024

The Source Register (Sreg) exists on the Super FX. It is assigned with FROM or WITH. It supplies the input for many instructions, including:

Any register from R0 to R15 can serve as Sreg. R0 is the default.

Some instructions ignore the source register. No instructions modify its value.

See Also