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Source Register
From SnesLab
The Source Register (Sreg) exists on the Super FX. It is assigned with FROM or WITH. It supplies the input for many instructions, including:
- ADC Rn
- ADC #n
- ADD Rn
- ADD #n
- AND Rn
- AND #n
- ASR
- BIC Rn
- BIC #n
- CMODE
- CMP Rn
- COLOR
- DIV2
- FMULT
- GETBH
- GETBL
- HIB
- LJMP
- LMULT
- LOB
- LSR
- MULT Rn
- MULT #n
- NOT
- OR Rn
- OR #n
- RAMB
- ROL
- ROMB
- ROR
- SBC Rn
- SBK
- SEX
- STB
- STW
- SUB Rn
- SUB #n
- SWAP
- UMULT
Any register from R0 to R15 can serve as Sreg. R0 is the default.