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https://github.com/holub/mame
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istrebiteli: split program ROMs as per schematics, notes
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@ -5,19 +5,19 @@
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Istrebiteli driver by MetalliC
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TODO:
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sound emulation
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hardware-like noice sound generation
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accurate sprite collision
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how to play:
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how to play:
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insert one or more coins, each coin gives 2 minutes of play time, then press 1 or 2 player game start
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hit enemy 15 or more times to get bonus game
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test mode:
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insert 12 or more coins then press 2 player start
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hit enemy 15 or more times to get bonus game
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note:
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test mode:
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insert 12 or more coins then press 2 player start
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notes:
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dumped PCB is early game version, have several bugs, possible test/prototype.
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later version was seen in St.Petersburg arcade museum.
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later version was seen in St.Petersburg arcade museum, CPU board have single 8Kx8 ROM.
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**************************************************************************/
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@ -91,8 +91,8 @@ void istrebiteli_sound_device::sound_stream_update(sound_stream &stream, stream_
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smpl = (m_rom[m_rom_cnt] >> m_sample_num) & 1;
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// below is huge guess
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if ((m_prev_data & 0x40) == 0) // b6 noice enable ?
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smpl &= rand() & 1;
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if ((m_prev_data & 0x40) == 0) // b6 noice enable ?
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smpl &= rand() & 1;
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smpl *= (m_prev_data & 0x80) ? 1000 : 4000; // b7 volume ?
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*sample++ = smpl;
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@ -113,8 +113,8 @@ void istrebiteli_sound_device::sound_w(UINT8 data)
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}
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else
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m_rom_incr = 1;
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// if (m_prev_data != data)
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// printf("sound %02X rescnt %d sample %d outen %d b6 %d b7 %d\n", data, (data >> 1) & 1, (data >> 2) & 7, (data >> 5) & 1, (data >> 6) & 1, (data >> 7) & 1);
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// if (m_prev_data != data)
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// printf("sound %02X rescnt %d sample %d outen %d b6 %d b7 %d\n", data, (data >> 1) & 1, (data >> 2) & 7, (data >> 5) & 1, (data >> 6) & 1, (data >> 7) & 1);
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m_prev_data = data;
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}
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@ -413,7 +413,7 @@ GFXDECODE_END
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static MACHINE_CONFIG_START( istreb, istrebiteli_state)
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/* basic machine hardware */
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MCFG_CPU_ADD(I8080_TAG, I8080, XTAL_8MHz / 4) // KR580VM80A
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MCFG_CPU_ADD(I8080_TAG, I8080, XTAL_8MHz / 4) // KR580VM80A
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MCFG_CPU_PROGRAM_MAP(mem_map)
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MCFG_CPU_IO_MAP(io_map)
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@ -445,7 +445,11 @@ MACHINE_CONFIG_END
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ROM_START( istreb )
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ROM_REGION( 0x1000, I8080_TAG, ROMREGION_ERASEFF )
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ROM_LOAD( "main.bin", 0x000, 0xa00, CRC(ae67c41c) SHA1(1f7807d486cd4d161ee49be991b81db7dc9b0f3b) ) // actually 5x 512B ROMs, TODO split
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ROM_LOAD( "002-ia12.bin", 0x000, 0x200, CRC(de0bce75) SHA1(ca284e8220d0d55c1a4dd3e951b53404f40fc873) )
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ROM_LOAD( "002-ia9.bin", 0x200, 0x200, CRC(e9a93ee7) SHA1(63c2001140d2b30657fceca97a639b1acbf614c2) )
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ROM_LOAD( "002-ib11-2.bin", 0x400, 0x200, CRC(4bb8b875) SHA1(230193e08586f4585fe98b2b31c4c8aa57a83e70) )
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ROM_LOAD( "002-ib9.bin", 0x600, 0x200, CRC(4eb948b5) SHA1(e9926591d1b0c528630b54956993c01139c58913) )
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ROM_LOAD( "002-ib13.bin", 0x800, 0x200, CRC(4fec5b14) SHA1(72b01c28882d567cad6924e05849438e5fe7a133) )
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ROM_REGION( 0x200, "chars", 0 )
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ROM_LOAD( "003-g8.bin", 0x000, 0x200, CRC(5cd7ad47) SHA1(2142711c8a3640b7aa258a2059cfb0f14297a5ac) )
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