GameBoy\Opcode::opcode159 PHP Method

    public static function opcode159(Core $core)
    {
        //Optimized SBC A:
        if ($core->FCarry) {
            $core->FZero = false;
            $core->FSubtract = $core->FHalfCarry = $core->FCarry = true;
            $core->registerA = 0xff;
        } else {
            $core->FHalfCarry = $core->FCarry = false;
            $core->FSubtract = $core->FZero = true;
            $core->registerA = 0;
        }
    }