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r23945 Tuesday 25th June, 2013 at 18:14:44 UTC by hap
revert galactic fake sound emulation, it was worse than before
[src/mame/audio]8080bw.c
[src/mame/drivers]8080bw.c
[src/mame/includes]8080bw.h

trunk/src/mame/includes/8080bw.h
r23944r23945
9292   DECLARE_WRITE8_MEMBER(shuttlei_ff_w);
9393   DECLARE_WRITE8_MEMBER(shuttlei_sh_port_1_w);
9494   DECLARE_WRITE8_MEMBER(shuttlei_sh_port_2_w);
95   DECLARE_WRITE8_MEMBER(galactic_07_w);
96   DECLARE_WRITE8_MEMBER(galactic_sh_port_1_w);
97   DECLARE_WRITE8_MEMBER(galactic_sh_port_2_w);
9895   DECLARE_READ8_MEMBER(claybust_gun_lo_r);
9996   DECLARE_READ8_MEMBER(claybust_gun_hi_r);
10097   DECLARE_READ8_MEMBER(invmulti_eeprom_r);
r23944r23945
156153
157154DISCRETE_SOUND_EXTERN( ballbomb );
158155DISCRETE_SOUND_EXTERN( indianbt );
159DISCRETE_SOUND_EXTERN( galactic );
160156DISCRETE_SOUND_EXTERN( polaris );
161157
162158extern const sn76477_interface lupin3_sn76477_interface;
trunk/src/mame/drivers/8080bw.c
r23944r23945
29422942ROM dump came from a collection of old 5 1/4 disks (Apple II) that used to be in the
29432943 possession of an arcade operator in the early 80s.
29442944
2945TODO sound to be verified.
2945TODO:
2946- correct sound (currently same as invaders)
2947  * sound mutes when a few aliens are left?
2948  * port 7 write is used too, looks like it's for music similar to indianbt
2949  Note that bass background hum and sound effects are already basically correct.
29462950
29472951***************************************************************************************/
29482952
2949static ADDRESS_MAP_START( galactic_io_map, AS_IO, 8, _8080bw_state )
2950   AM_RANGE(0x00, 0x00) AM_READ_PORT("IN0")
2951   AM_RANGE(0x01, 0x01) AM_READ_PORT("IN1")
2952   AM_RANGE(0x02, 0x02) AM_READ_PORT("IN2") AM_DEVWRITE("mb14241", mb14241_device, shift_count_w)
2953   AM_RANGE(0x03, 0x03) AM_DEVREAD("mb14241", mb14241_device, shift_result_r) AM_WRITE(galactic_sh_port_1_w)
2954   AM_RANGE(0x04, 0x04) AM_DEVWRITE("mb14241", mb14241_device, shift_data_w)
2955   AM_RANGE(0x05, 0x05) AM_WRITE(galactic_sh_port_2_w)
2956   AM_RANGE(0x06, 0x06) AM_WRITE(watchdog_reset_w)
2957   AM_RANGE(0x07, 0x07) AM_WRITE(galactic_07_w)
2958ADDRESS_MAP_END
2959
2960
2961static MACHINE_CONFIG_DERIVED_CLASS( galactic, mw8080bw_root, _8080bw_state )
2962
2963   /* basic machine hardware */
2964   MCFG_CPU_MODIFY("maincpu")
2965   MCFG_CPU_IO_MAP(galactic_io_map)
2966   MCFG_MACHINE_START_OVERRIDE(_8080bw_state,extra_8080bw)
2967
2968   /* add shifter */
2969   MCFG_MB14241_ADD("mb14241")
2970
2971   /* sound hardware */
2972   MCFG_FRAGMENT_ADD(invaders_samples_audio)
2973   MCFG_DISCRETE_ADD("discrete", 0, galactic)
2974   MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
2975
2976   /* video hardware */
2977   MCFG_SCREEN_MODIFY("screen")
2978   MCFG_SCREEN_UPDATE_DRIVER(_8080bw_state, screen_update_invaders)
2979MACHINE_CONFIG_END
2980
2981
29822953static INPUT_PORTS_START( galactic )
29832954   PORT_START("IN0")
29842955   PORT_BIT( 0xff, IP_ACTIVE_HIGH, IPT_UNKNOWN ) // gets read into memory (0x2012) then never used
r23944r23945
46394610GAME( 1980, indianbt,   0,        indianbt,  indianbt,  driver_device, 0, ROT270, "Taito", "Indian Battle", GAME_SUPPORTS_SAVE | GAME_IMPERFECT_SOUND )
46404611GAME( 1983, indianbtbr, indianbt, indianbtbr,indianbtbr,driver_device, 0, ROT270, "Taito do Brasil", "Indian Battle (Brazil)", GAME_SUPPORTS_SAVE | GAME_IMPERFECT_SOUND )
46414612GAME( 1980, steelwkr,   0,        steelwkr,  steelwkr,  driver_device, 0, ROT0  , "Taito", "Steel Worker", GAME_SUPPORTS_SAVE | GAME_IMPERFECT_SOUND )
4642GAMEL(1980?,galactic,   0,        galactic,  galactic,  driver_device, 0, ROT270, "Taito do Brasil", "Galactica - Batalha Espacial", GAME_SUPPORTS_SAVE | GAME_IMPERFECT_SOUND, layout_galactic )
4643GAMEL(1980?,spacmiss,   galactic, galactic,  galactic,  driver_device, 0, ROT270, "bootleg?", "Space Missile - Space Fighting Game", GAME_SUPPORTS_SAVE | GAME_IMPERFECT_SOUND, layout_galactic )
4613GAMEL(1980?,galactic,   0,        invaders,  galactic,  driver_device, 0, ROT270, "Taito do Brasil", "Galactica - Batalha Espacial", GAME_SUPPORTS_SAVE | GAME_IMPERFECT_SOUND, layout_galactic )
4614GAMEL(1980?,spacmiss,   galactic, invaders,  galactic,  driver_device, 0, ROT270, "bootleg?", "Space Missile - Space Fighting Game", GAME_SUPPORTS_SAVE | GAME_IMPERFECT_SOUND, layout_galactic )
46444615
46454616// Misc. manufacturers
46464617GAME( 1979, galxwars,   0,        invadpt2,  galxwars,  driver_device, 0, ROT270, "Universal", "Galaxy Wars (Universal set 1)", GAME_WRONG_COLORS | GAME_SUPPORTS_SAVE )
trunk/src/mame/audio/8080bw.c
r23944r23945
13141314
13151315   m_port_1_last_extra = data;
13161316}
1317
1318
1319/*******************************************************/
1320/*                                                     */
1321/*   "Galactic" and "Space Missile"                    */
1322/*   Due to no schematics, these sounds are nothing    */
1323/*   more than speculation.                            */
1324/*******************************************************/
1325
1326/*************************************
1327 *
1328 *  Discrete Sound
1329 * (copied from indianbt)
1330 *
1331 *************************************/
1332
1333static const discrete_dac_r1_ladder galactic_music_dac =
1334   {3, {0, RES_K(47), RES_K(12)}, 0, 0, 0, CAP_U(0.1)};
1335
1336#define GALACTIC_MUSIC_CLK      (150000)
1337
1338/* Nodes - Inputs */
1339#define GALACTIC_MUSIC_DATA     NODE_01
1340/* Nodes - Sounds */
1341#define GALACTIC_MUSIC          NODE_11
1342
1343DISCRETE_SOUND_START(galactic)
1344
1345   DISCRETE_INPUT_DATA (GALACTIC_MUSIC_DATA)
1346
1347/******************************************************************************
1348 *
1349 * Music Generator
1350 *
1351 ******************************************************************************/
1352   DISCRETE_NOTE(NODE_20, 1, GALACTIC_MUSIC_CLK, GALACTIC_MUSIC_DATA, 255, 5, DISC_CLK_IS_FREQ)
1353
1354   // Convert count to 7492 output
1355   DISCRETE_TRANSFORM2(NODE_21, NODE_20, 2, "01>0+")
1356
1357   DISCRETE_DAC_R1(NODE_22, NODE_21, DEFAULT_TTL_V_LOGIC_1, &galactic_music_dac)
1358
1359/******************************************************************************
1360 *
1361 * Final Mixing and Output
1362 *
1363 ******************************************************************************/
1364   DISCRETE_CRFILTER(NODE_90, NODE_22, RES_K(10), CAP_U(0.1))
1365
1366   DISCRETE_OUTPUT(NODE_90, 21000)
1367
1368DISCRETE_SOUND_END
1369
1370WRITE8_MEMBER( _8080bw_state::galactic_07_w )
1371{
1372   discrete_sound_w(m_discrete, space, GALACTIC_MUSIC_DATA, data | 0xc0);
1373}
1374
1375WRITE8_MEMBER(_8080bw_state::galactic_sh_port_1_w)
1376{
1377   UINT8 rising_bits = data & ~m_port_1_last_extra;
1378
1379   if (rising_bits & 0x02) m_samples->start(2, 2);     /* Killed an enemy */
1380   if (rising_bits & 0x04) m_samples->start(1, 1);     /* Lost a life */
1381
1382   m_port_1_last_extra = data;
1383}
1384
1385// bits 0-3 could make a variable background tone
1386WRITE8_MEMBER(_8080bw_state::galactic_sh_port_2_w)
1387{
1388   UINT8 rising_bits = data & ~m_port_2_last_extra;
1389
1390   if (rising_bits & 0x10) m_samples->start(0, 0);     /* Shoot */
1391
1392   m_flip_screen = BIT(data, 5) & ioport(CABINET_PORT_TAG)->read();
1393
1394   m_port_2_last_extra = data;
1395}

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