83Plus:BCALLs:406C

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Synopsis

Official Name: Minus1

BCALL Address: 406C

Decrements the floating point number in OP1 by one.

Inputs

  • OP1 = floating point number

Outputs

  • OP1 = OP1 - 1
  • OP2 = floating point value of 1

Registers Destroyed

  • AF, BC, DE, HL

Example

B_CALL OP1Set3  ;OP1=floating point 3
B_CALL Minus1  ;returns with OP1=floating point 2