ff3:ff3us:doc:snes:opcode

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ff3:ff3us:doc:snes:opcode [2017/04/12 21:12]
hatzen08 [ADC, SBC] 		ff3:ff3us:doc:snes:opcode [2022/05/06 08:20]
hatzen08 small fix for adc/sbc opcode
Line 124: Line 124:
 |v set if signed overflow?                  | |v set if signed overflow?                  |
 |z set if result is zero                    | |z set if result is zero                    |
-|c set if overflow or underflow             |+|c set if not overflow or underflow         |
  
 ^  Opcode   ^Syntax         ^ Bytes ^Notes                              | ^  Opcode   ^Syntax         ^ Bytes ^Notes                              |
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 ===== BIT ===== ===== BIT =====
  
-Does a binary AND between the A or C register and the memory. Unlike the AND opcode, the binary AND operation only is done for the bits sets in the A or C register. All clear bits in the A or C register will be left clear after the operation.+Does a binary AND between the A or C register and the memory. Unlike the AND opcode, the binary AND operation doesn't alter the A or C register. 
  
 ^flags                                                  ^ ^flags                                                  ^
  • ff3/ff3us/doc/snes/opcode.txt
  • Last modified: 21 months ago
  • by strotlog