FF7/Field/Script/Opcodes/87 MINUS

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Revision as of 12:34, 4 April 2018 by my_wiki>BukTop (1 revision imported)
  • Opcode: 0x87
  • Short name: MINUS
  • Long name: Subtraction (8-bit)

Memory layout

0x87 D/S Dest Oper

Arguments

  • const Bit[4] D: Destination bank
  • const Bit[4] S: Source bank
  • const UByte Dest: The destination variable, to which the operand is subtracted.
  • const UByte Oper: The operand to be subtracted from the destination.

Description

Subtracts two numbers and stores the result back into “Dest”. The result of the subtraction wraps around into the range of 0-255. If the Source Bank is 0 then the “Oper” is subtracted from the destination value. If the Source Bank is an 8 bit bank, then the “Oper” is the address in that bank where the operand is.

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