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new not working clone
------------------------------------ VS Computer Mahjong [ShouTime] (nw) decryption is mostly complete (bar possible typos), left as not working mostly because inputs seem to be read differently and the AY hook up needs work (stuck notes).
This commit is contained in:
Ivan Vangelista
parent
4741023f51
commit
0ba45f53e0
3 changed files with 93 additions and 0 deletions
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@ -148,7 +148,53 @@ void route16_state::init_route16c()
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rom[0x756] = 0x07;
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}
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void route16_state::init_vscompmj() // only opcodes encrypted
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{
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uint8_t *rom = memregion("cpu1")->base();
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uint8_t unkn = 0x00;
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static const uint8_t xor_table_00[0x08][0x08] =
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{
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{ 0x04, 0x01, 0x14, 0x14, 0x05, 0x10, 0x54, 0x05 }, // 0x0x and 0x2x
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{ 0x15, 0x51, 0x01, 0x44, 0x50, 0x44, 0x11, 0x50 }, // 0x1x and 0x3x
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{ 0x14, 0x50, 0x41, 0x15, 0x50, 0x15, 0x15, 0x41 }, // 0x4x and 0x6x
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{ unkn, 0x04, 0x40, 0x11, 0x11, 0x45, 0x10, unkn }, // 0x5x and 0x7x
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{ 0x40, unkn, 0x14, unkn, 0x01, 0x44, 0x14, 0x54 }, // 0x8x and 0xax
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{ 0x11, 0x40, unkn, unkn, 0x14, 0x01, 0x54, 0x51 }, // 0x9x and 0xbx
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{ 0x05, 0x45, 0x10, 0x55, unkn, 0x15, 0x55, 0x11 }, // 0xcx and 0xex
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{ unkn, 0x41, 0x51, 0x10, 0x01, 0x44, 0x50, 0x50 }, // 0xdx and 0xfx
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};
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static const uint8_t xor_table_01[0x08][0x08] =
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{
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{ 0x40, 0x41, 0x45, 0x54, 0x44, 0x40, 0x55, 0x41 }, // 0x0x and 0x2x
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{ 0x14, 0x14, 0x04, 0x45, 0x44, 0x01, 0x05, 0x05 }, // 0x1x and 0x3x
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{ 0x40, 0x14, 0x01, 0x11, 0x45, 0x14, 0x04, 0x50 }, // 0x4x and 0x6x
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{ 0x04, 0x40, 0x55, 0x55, 0x44, 0x40, 0x55, 0x55 }, // 0x5x and 0x7x
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{ 0x15, 0x05, 0x14, 0x05, 0x01, unkn, 0x04, 0x04 }, // 0x8x and 0xax
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{ 0x10, 0x04, 0x51, 0x01, 0x04, 0x04, 0x45, 0x51 }, // 0x9x and 0xbx
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{ 0x11, 0x01, 0x44, 0x44, 0x05, 0x15, 0x10, 0x05 }, // 0xcx and 0xex
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{ unkn, 0x14, 0x05, unkn, 0x01, 0x41, 0x04, unkn }, // 0xdx and 0xfx
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};
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for (int i = 0; i < 0x8000; i++)
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{
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uint8_t x = rom[i];
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uint8_t row = (BIT(x, 4) + (BIT(x, 6) << 1) + (BIT(x, 7) << 2));
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uint8_t xor_v = x & 0x07;
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switch(i & 0x01)
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{
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case 0x00: x ^= xor_table_00[row][xor_v]; break;
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case 0x01: x ^= xor_table_01[row][xor_v]; break;
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}
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m_decrypted_opcodes[i] = x;
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}
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}
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/*************************************
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*
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@ -361,9 +407,23 @@ void route16_state::jongpute_cpu1_map(address_map &map)
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map(0x5800, 0x5800).rw(FUNC(route16_state::jongpute_p1_matrix_r), FUNC(route16_state::jongpute_input_port_matrix_w));
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map(0x6800, 0x6800).w("ay8910", FUNC(ay8910_device::data_w));
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map(0x6900, 0x6900).w("ay8910", FUNC(ay8910_device::address_w));
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map(0x7000, 0x7fff).rom();
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map(0x8000, 0xbfff).ram().share("videoram1");
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}
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void route16_state::vscompmj_cpu1_map(address_map &map)
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{
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jongpute_cpu1_map(map);
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map(0x6900, 0x6900).r("ay8910", FUNC(ay8910_device::data_r)); // TODO: check this, stuck notes
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map(0x7000, 0x7fff).rom();
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}
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void route16_state::vscompmj_decrypted_opcodes(address_map &map)
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{
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map(0x0000, 0x7fff).rom().share("decrypted_opcodes");
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}
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void route16_state::route16_cpu2_map(address_map &map)
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{
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@ -783,7 +843,13 @@ void route16_state::jongpute(machine_config &config)
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PALETTE(config.replace(), m_palette, palette_device::BGR_3BIT);
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}
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void route16_state::vscompmj(machine_config &config)
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{
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jongpute(config);
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m_cpu1->set_addrmap(AS_PROGRAM, &route16_state::vscompmj_cpu1_map);
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m_cpu1->set_addrmap(AS_OPCODES, &route16_state::vscompmj_decrypted_opcodes);
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}
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/*************************************
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*
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@ -1130,6 +1196,25 @@ ROM_START( jongpute )
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ROM_LOAD( "ju09", 0x0100, 0x0100, BAD_DUMP CRC(27d47624) SHA1(ee04ce8043216be8b91413b546479419fca2b917) )
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ROM_END
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ROM_START( vscompmj )
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ROM_REGION( 0x8000, "cpu1", 0 ) // all 2732
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ROM_LOAD( "j2_1.0r", 0x0000, 0x1000, CRC(e112ac58) SHA1(a274080dfd89c547335f93cb8f99e80ec7b972df) ) // 2732
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ROM_LOAD( "j2_2.0n", 0x1000, 0x1000, CRC(c751c041) SHA1(69063549e616fdd9d175b47275331986f1d3e0bd) )
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ROM_LOAD( "j2_3.0l", 0x2000, 0x1000, CRC(e85bf26b) SHA1(8bb6625433c9f86808a41bde7dd587bdc430b934) )
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ROM_LOAD( "j2_4.0k", 0x3000, 0x1000, CRC(ead1b054) SHA1(fa0940391968541cdfd3d306c7bfd6781617b580) )
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ROM_LOAD( "j2_5.0j", 0x7000, 0x1000, CRC(cbf49c08) SHA1(064054fd9e36c8a359926ade4fc10855d3058f01) )
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ROM_REGION( 0x2000, "cpu2", 0 )
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ROM_LOAD( "j2_6.0e", 0x0000, 0x1000, CRC(3a559328) SHA1(dd6333ddcc8aa6097d83b21cfde740b2cb7c908b) ) // 2732
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ROM_REGION( 0x0200, "proms", 0 )
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// The upper 128 bytes are 0's, used by the hardware to blank the display
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ROM_LOAD( "82s129.6k", 0x0000, 0x0100, CRC(08793ef7) SHA1(bfc27aaf25d642cd57c0fbe73ab575853bd5f3ca) )
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ROM_LOAD( "82s129.6h", 0x0100, 0x0100, CRC(08793ef7) SHA1(bfc27aaf25d642cd57c0fbe73ab575853bd5f3ca) )
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ROM_REGION( 0x0100, "proms2", 0 ) // currently unused by the emulation
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ROM_LOAD( "82s129.9r", 0x0000, 0x0100, CRC(20ac25d8) SHA1(6f06472ac7fcb22c9060092a2d456be5d3ca6d5f) )
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ROM_END
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/*************************************
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@ -1155,3 +1240,4 @@ GAME( 1980, speakhlp, speakres, spacecho, spacecho, route16_state, empty_init,
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GAME( 1981, jongpute, 0, jongpute, jongpute, route16_state, empty_init, ROT0, "Alpha Denshi Co.", "Jongputer", MACHINE_SUPPORTS_SAVE | MACHINE_IMPERFECT_SOUND | MACHINE_IMPERFECT_COLORS | MACHINE_NOT_WORKING ) // sampling voice is not emulated, bug with colors makes tile recognition difficult
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GAME( 1981, ttmahjng, jongpute, jongpute, jongpute, route16_state, empty_init, ROT0, "Alpha Denshi Co. (Taito license)", "T.T Mahjong", MACHINE_SUPPORTS_SAVE )
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GAME( 1981, vscompmj, jongpute, vscompmj, jongpute, route16_state, init_vscompmj, ROT0, "Nichibutsu", "VS Computer Mahjong", MACHINE_SUPPORTS_SAVE | MACHINE_IMPERFECT_SOUND | MACHINE_IMPERFECT_COLORS | MACHINE_NOT_WORKING ) // decryption might be incomplete (attract resets), inputs seem read differently
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@ -20,6 +20,7 @@ public:
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, m_sharedram(*this, "sharedram")
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, m_videoram1(*this, "videoram1")
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, m_videoram2(*this, "videoram2")
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, m_decrypted_opcodes(*this, "decrypted_opcodes")
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, m_palette(*this, "palette")
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, m_screen(*this, "screen")
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, m_protection_data(0)
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@ -31,10 +32,12 @@ public:
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void speakres(machine_config &config);
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void stratvox(machine_config &config);
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void route16(machine_config &config);
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void vscompmj(machine_config &config);
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void init_route16();
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void init_route16a();
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void init_route16c();
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void init_vscompmj();
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private:
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DECLARE_WRITE8_MEMBER(out0_w);
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@ -62,6 +65,8 @@ private:
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void stratvox_cpu1_map(address_map &map);
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void stratvox_cpu2_map(address_map &map);
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void jongpute_cpu1_map(address_map &map);
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void vscompmj_cpu1_map(address_map &map);
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void vscompmj_decrypted_opcodes(address_map &map);
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required_device<cpu_device> m_cpu1;
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required_device<cpu_device> m_cpu2;
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@ -70,6 +75,7 @@ private:
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required_shared_ptr<uint8_t> m_sharedram;
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required_shared_ptr<uint8_t> m_videoram1;
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required_shared_ptr<uint8_t> m_videoram2;
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optional_shared_ptr<uint8_t> m_decrypted_opcodes;
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required_device<palette_device> m_palette;
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required_device<screen_device> m_screen;
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uint8_t m_protection_data;
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@ -34324,6 +34324,7 @@ stratvox // [1980 Sun Electronics] Taito
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stratvoxa // [1980 Sun Electronics] Taito
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stratvoxb // bootleg
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ttmahjng // 1981 Alpha Denshi Co. / Taito
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vscompmj // 1981 Nichibutsu
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@source:rowamet.cpp
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heavymtl //
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