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Sunset Riders / Super Street Fighter II - The New Challengers (scrambled bootleg of Mega Drive versions) [Hammy]

- sega/megadriv_acbl.cpp: updated comments to better show the driver includes two different types of PCBs [Hammy]
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@Osso13
Osso13 committed Oct 9, 2024
1 parent 0f42103 commit 2901aa5
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1 change: 1 addition & 0 deletions src/mame/mame.lst
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Expand Up @@ -39397,6 +39397,7 @@ mk3mdb
sonic2mb
sonic3mb
srmdb
srssf2mb
ssf2mdb
twinktmb

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87 changes: 67 additions & 20 deletions src/mame/sega/megadriv_acbl.cpp
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Expand Up @@ -4,21 +4,26 @@
Sega Mega Drive/Genesis-based bootlegs
Games supported:
Games supported (with PIC protection):
* Aladdin
* Bare Knuckle II
* Bare Knuckle III
* Bare Knuckle III / Sunset Riders
* Jurassic Park
* Mortal Kombat 3
* Sonic The Hedgehog 2
* Sonic The Hedgehog 3
* Super Street Fighter II - The New Challengers
* Sunset Riders
* Twinkle Tale
Games supported (with Actel scrambling/protection)
* Bare Knuckle
* Bare Knuckle II
* Bare Knuckle III
* Mortal Kombat 3
* Sunset Riders
* Super Street Fighter II
* Sunset Riders / Bare Knuckle III (2 in 1)
* Sunset Riders / Super Street Fighter II (2 in 1)
Aladdin PCB info
PIC Style PCB info
================
CPU
Expand All @@ -29,10 +34,9 @@ Sound RAM 8kB (76c88-6264 x1)
Sound IC YM2612 (identified by pins,code was been erased.Named on board as TA07)
Other ICs
Microchip PIC16C57 (probably it contains the MD modified bios)
Microchip PIC16C57 (usually used for coin handling and/or protection)
Osc 50 MHz
There are present 3 flat-pack chips with code erased again and named TA04,TA05,TA06 on board,which i have
identified (generically) by looking the PCB as:
There are present 3 flat-pack chips, common bootleg MD chipset
TA04-Intercommunication and sync generator chip
TA05-Input controller
TA06-VDP (probably MD clone) Uses 2x D41264 SIL package as video RAM
Expand All @@ -42,8 +46,9 @@ ROMs
M3,M4 main program
M1,M2 graphics
All EPROMs are 27C040
barek3mba is basically the same but with 2 extra ROM slots
Notes:
aladmdb Notes:
Dip-switch 8 x1
Expand Down Expand Up @@ -1175,6 +1180,35 @@ void md_boot_6button_state::init_bk3ssrmb()
init_megadrij();
}

void md_boot_6button_state::init_srssf2mb()
{
uint8_t *rom = memregion("maincpu")->base();

for (int x = 0x00001; x < 0x100000; x += 2)
{
rom[x] = bitswap<8>(rom[x] ^ 0xff, 3, 1, 6, 4, 7, 0, 2, 5);
}

for (int x = 0x100001; x < 0x180000; x += 2)
{
rom[x] = bitswap<8>(rom[x] ^ 0xff, 2, 4, 0, 7, 1, 3, 5, 6);
}

for (int x = 0x180001; x < 0x200000; x += 2)
{
rom[x] = bitswap<8>(rom[x], 3, 7, 0, 5, 1, 6, 2, 4);
}

for (int x = 0x200001; x < 0x700000; x += 2)
{
rom[x] = bitswap<8>(rom[x], 1, 7, 6, 4, 5, 2, 3, 0);
}

m_maincpu->space(AS_PROGRAM).install_read_handler(0x770070, 0x770075, read16sm_delegate(*this, FUNC(md_boot_6button_state::dsw_r)));

init_megadrij();
}

void md_boot_state::init_sonic2mb()
{
// 100000 = writes to unpopulated MCU?
Expand Down Expand Up @@ -1337,6 +1371,17 @@ ROM_START( bk3ssrmb )
ROM_LOAD16_BYTE( "8.u8", 0x300001, 0x040000, CRC(32ee1048) SHA1(1b135c200b4440e95a7d1766b4b404ddd238872d) )
ROM_END

ROM_START( srssf2mb ) // TODO: identify correct order
ROM_REGION( 0x700000, "maincpu", 0 )
ROM_LOAD16_BYTE( "1.u15", 0x000000, 0x040000, CRC(b40982ca) SHA1(fa7b266d346e2a79936984b2b989f3e8b6a90223) ) // these are the first 0x80000 of SSF2, with differences
ROM_LOAD16_BYTE( "3.u14", 0x000001, 0x040000, CRC(81ac9700) SHA1(cdc7d49d75b8d4a5ff41181a063e1917483afd75) )
ROM_LOAD16_BYTE( "2.u13", 0x080000, 0x040000, CRC(e5f1ab97) SHA1(0f4c527043f1272e75a996f4f7270c6ea4ed3c4d) ) // these are Sunset Riders
ROM_LOAD16_BYTE( "4.u12", 0x080001, 0x040000, CRC(32ee1048) SHA1(1b135c200b4440e95a7d1766b4b404ddd238872d) )
ROM_LOAD16_WORD_SWAP( "ys104-01.u5", 0x100000, 0x200000, CRC(055dea8b) SHA1(663005c6c87046e955c6295bf25379d258dd4066) ) // from here there is a version of SSF2 very similar to ssf2mdb
ROM_LOAD16_WORD_SWAP( "ys104-02.u6", 0x300000, 0x200000, CRC(6fcf8db5) SHA1(319f320110966058ccec8da640877e8a82c3e4b4) )
ROM_LOAD16_WORD_SWAP( "ys104-03.u7", 0x500000, 0x200000, CRC(0771d570) SHA1(6bb93a1fd8f0f2a1a12e9cd3eec762ac46912632) ) // 1ST AND 2ND HALF IDENTICAL
ROM_END

ROM_START( twinktmb ) // Same PCB as sonic2mb, but in this one the PIC is populated
ROM_REGION( 0x400000, "maincpu", 0 ) // 68000 Code
ROM_LOAD16_BYTE( "m2.bin", 0x000000, 0x080000, CRC(44424f8f) SHA1(e16318bfdf869765c821c264cf9a7e6c728f7073) )
Expand Down Expand Up @@ -1380,19 +1425,21 @@ ROM_END
*
*************************************/

GAME( 1993, aladmdb, 0, megadrvb, aladmdb, md_boot_state, init_aladmdb, ROT0, "bootleg / Sega", "Aladdin (bootleg of Japanese Mega Drive version)", 0 )
GAME( 1996, mk3mdb, 0, megadrvb_6b, mk3mdb, md_boot_6button_state, init_mk3mdb, ROT0, "bootleg / Midway", "Mortal Kombat 3 (bootleg of Mega Drive version)", 0 )
GAME( 1994, ssf2mdb, 0, ssf2mdb, ssf2mdb, md_boot_6button_state, init_megadrij, ROT0, "bootleg / Capcom", "Super Street Fighter II - The New Challengers (bootleg of Japanese Mega Drive version)", 0 )
GAME( 1993, srmdb, 0, megadrvb, srmdb, md_boot_state, init_srmdb, ROT0, "bootleg / Konami", "Sunset Riders (bootleg of Mega Drive version)", 0 )
// PIC protected hardware with Mega Drive bootleg chipset marked TA-04, TA-05 and TA-06.
GAME( 1993, aladmdb, 0, megadrvb, aladmdb, md_boot_state, init_aladmdb, ROT0, "bootleg / Sega", "Aladdin (bootleg of Mega Drive version)", 0 )
GAME( 1993, sonic2mb, 0, md_bootleg, sonic2mb, md_boot_state, init_sonic2mb, ROT0, "bootleg / Sega", "Sonic The Hedgehog 2 (bootleg of Mega Drive version)", 0 ) // Flying wires going through the empty PIC space aren't completely understood
GAME( 1993, sonic3mb, 0, md_bootleg, sonic3mb, md_sonic3bl_state, init_sonic3mb, ROT0, "bootleg / Sega", "Sonic The Hedgehog 3 (bootleg of Mega Drive version)", MACHINE_UNEMULATED_PROTECTION | MACHINE_NOT_WORKING ) // undumped PIC
GAME( 1994, barek2mb, 0, md_boot_mcu, barek2, md_boot_mcu_state, init_megadrij, ROT0, "bootleg / Sega", "Bare Knuckle II (bootleg of Mega Drive version)", 0 ) // PCB labeled "BK-059"
GAME( 1994, barek3mb, 0, megadrvb, barek3, md_boot_state, init_barek3, ROT0, "bootleg / Sega", "Bare Knuckle III (bootleg of Mega Drive version)", 0 )
GAME( 1994, barek3mba, barek3mb, megadrvb, barek3, md_boot_state, init_barek3a, ROT0, "bootleg / Sega", "Bare Knuckle III (bootleg of Mega Drive version, protected)", MACHINE_UNEMULATED_PROTECTION | MACHINE_NOT_WORKING ) // undumped PIC
GAME( 1994, bk3ssrmb, 0, megadrvb_6b, bk3ssrmb, md_boot_6button_state, init_bk3ssrmb, ROT0, "bootleg / Sega", "Bare Knuckle III / Sunset Riders (bootleg of Mega Drive versions)", MACHINE_NOT_WORKING ) // Currently boots as Bare Knuckle III, mechanism to switch game not found yet
GAME( 1994, barek3mba, barek3mb, megadrvb, barek3, md_boot_state, init_barek3a, ROT0, "bootleg / Sega", "Bare Knuckle III (bootleg of Mega Drive version)", MACHINE_UNEMULATED_PROTECTION | MACHINE_NOT_WORKING ) // undumped PIC
GAME( 1993, twinktmb, 0, md_bootleg, twinktmb, md_boot_state, init_twinktmb, ROT0, "bootleg / Sega", "Twinkle Tale (bootleg of Mega Drive version)", MACHINE_UNEMULATED_PROTECTION | MACHINE_NOT_WORKING ) // Needs PIC decap or simulation
GAME( 1993, jparkmb, 0, md_bootleg, twinktmb, md_boot_state, init_jparkmb, ROT0, "bootleg / Sega", "Jurassic Park (bootleg of Mega Drive version)", MACHINE_UNEMULATED_PROTECTION | MACHINE_NOT_WORKING ) // Needs PIC decap or simulation

// Chinese bootlegs. Very clean looking with custom chips marked TA-04, TA-05 and TA-06.
GAME( 1994, barekch, 0, megadrvb_6b, barekch, md_boot_6button_state, init_barekch, ROT0, "bootleg", "Bare Knuckle (Chinese bootleg of Mega Drive version)", 0 )
GAME( 1994, barek2ch, 0, md_bootleg, barek2ch, md_boot_state, init_barek2ch, ROT0, "bootleg", "Bare Knuckle II (Chinese bootleg of Mega Drive version)", 0 )
// Scrambled bootlegs with Actel for scrambling and Mega Drive bootleg chipset marked TA-04, TA-05 and TA-06.
GAME( 1994, barekch, 0, megadrvb_6b, barekch, md_boot_6button_state, init_barekch, ROT0, "bootleg", "Bare Knuckle (scrambled bootleg of Mega Drive version)", 0 )
GAME( 1994, barek2ch, 0, md_bootleg, barek2ch, md_boot_state, init_barek2ch, ROT0, "bootleg", "Bare Knuckle II (scrambled bootleg of Mega Drive version)", 0 )
GAME( 1994, barek3mb, 0, megadrvb, barek3, md_boot_state, init_barek3, ROT0, "bootleg / Sega", "Bare Knuckle III (scrambled bootleg of Mega Drive version)", 0 )
GAME( 1994, bk3ssrmb, 0, megadrvb_6b, bk3ssrmb, md_boot_6button_state, init_bk3ssrmb, ROT0, "bootleg / Sega", "Bare Knuckle III / Sunset Riders (scrambled bootleg of Mega Drive versions)", MACHINE_NOT_WORKING ) // Currently boots as Bare Knuckle III, mechanism to switch game not emulated yet
GAME( 1994, srssf2mb, 0, megadrvb_6b, bk3ssrmb, md_boot_6button_state, init_srssf2mb, ROT0, "bootleg / Sega", "Sunset Riders / Super Street Fighter II - The New Challengers (scrambled bootleg of Mega Drive versions)", MACHINE_NOT_WORKING )
GAME( 1996, mk3mdb, 0, megadrvb_6b, mk3mdb, md_boot_6button_state, init_mk3mdb, ROT0, "bootleg / Midway", "Mortal Kombat 3 (scrambled bootleg of Mega Drive version)", 0 )
GAME( 1994, ssf2mdb, 0, ssf2mdb, ssf2mdb, md_boot_6button_state, init_megadrij, ROT0, "bootleg / Capcom", "Super Street Fighter II - The New Challengers (scrambled bootleg of Mega Drive version)", 0 )
GAME( 1993, srmdb, 0, megadrvb, srmdb, md_boot_state, init_srmdb, ROT0, "bootleg / Konami", "Sunset Riders (scrambled bootleg of Mega Drive version)", 0 )
1 change: 1 addition & 0 deletions src/mame/sega/megadriv_acbl.h
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Original file line number Diff line number Diff line change
Expand Up @@ -114,6 +114,7 @@ class md_boot_6button_state : public md_boot_state
void init_mk3mdb();
void init_bk3ssrmb();
void init_barekch();
void init_srssf2mb();

protected:
virtual void machine_start() override ATTR_COLD;
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