public void handler() {
            PORT_START();
            /* IN0 */
            PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_COIN1);
            PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_UNKNOWN);
            PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT | IPF_8WAY);
            PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT | IPF_8WAY);
            PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_BUTTON1);
            PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_UNKNOWN);
            PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN | IPF_8WAY);
            PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP | IPF_8WAY);

            PORT_START();
            /* IN1 */
            PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_START1);
            PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_START2);
            PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_UNKNOWN);
            PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_COIN2);
            PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_COIN3);
            PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_UNKNOWN);
            PORT_DIPNAME(0xc0, 0x00, DEF_STR("Coinage"));
            PORT_DIPSETTING(0x40, DEF_STR("2C_1C"));
            PORT_DIPSETTING(0x00, DEF_STR("1C_1C"));
            PORT_DIPSETTING(0xc0, DEF_STR("Free_Play"));
            /* 0x80 gives 2 Coins/1 Credit */

            PORT_START();
            /* DSW0 */
            PORT_DIPNAME(0x03, 0x02, DEF_STR("Lives"));
            PORT_DIPSETTING(0x00, "1");
            PORT_DIPSETTING(0x01, "2");
            PORT_DIPSETTING(0x02, "3");
            PORT_DIPSETTING(0x03, "4");
            PORT_DIPNAME(0x04, 0x00, DEF_STR("Unknown"));
            PORT_DIPSETTING(0x00, DEF_STR("Off"));
            PORT_DIPSETTING(0x04, DEF_STR("On"));
            PORT_DIPNAME(0x08, 0x08, DEF_STR("Bonus_Life"));
            PORT_DIPSETTING(0x08, "500000");
            PORT_DIPSETTING(0x00, "750000");
            PORT_BIT(0xf0, IP_ACTIVE_HIGH, IPT_UNUSED);
            INPUT_PORTS_END();
        }