GameBoy\Opcode::opcode220 PHP Method

    public static function opcode220(Core $core)
    {
        if ($core->FCarry) {
            $temp_pc = ($core->memoryRead($core->programCounter + 1 & 0xffff) << 8) + $core->memoryRead($core->programCounter);
            $core->programCounter = $core->programCounter + 2 & 0xffff;
            $core->stackPointer = $core->unswtuw($core->stackPointer - 1);
            $core->memoryWrite($core->stackPointer, $core->programCounter >> 8);
            $core->stackPointer = $core->unswtuw($core->stackPointer - 1);
            $core->memoryWrite($core->stackPointer, $core->programCounter & 0xff);
            $core->programCounter = $temp_pc;
            $core->CPUTicks += 3;
        } else {
            $core->programCounter = $core->programCounter + 2 & 0xffff;
        }
    }