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author angelosa <lordkale4@gmail.com>2023-11-25 15:34:34 +0100
committer angelosa <lordkale4@gmail.com>2023-11-25 15:34:34 +0100
commit5e9008a37802ac40fc439d5e02f8893940000e46 (patch)
treee8f90811898dca0e47e582925fbb7ce392286282 /src
parent7174ef98d4ef11e315057a7bb88515c3fb265a00 (diff)
sega/sms_bootleg.cpp: simplify banking scheme, move menu roms inside game_data space, fix smssgamea game loading
Diffstat (limited to 'src')
-rw-r--r--src/mame/sega/sms_bootleg.cpp115
1 files changed, 63 insertions, 52 deletions
diff --git a/src/mame/sega/sms_bootleg.cpp b/src/mame/sega/sms_bootleg.cpp
index 8c1809b884f..d5cb76800ac 100644
--- a/src/mame/sega/sms_bootleg.cpp
+++ b/src/mame/sega/sms_bootleg.cpp
@@ -17,9 +17,10 @@ smssgame
- 05 Super Mario: crashes, seemingly expects $8000-$bfff to be a copy of $0000-$3fff, open bus? btanb?
- 29 Goonies: either boots (with bad title screen GFXs) or outright crashes (similar to Super Mario?)
- SG-1000 "newer" conversions all sports dimmed main sprite, cfr. 15 Bomb Jack or 20 Pitfall II
+- 03 Wonder Boy: minor GFX glitch on stage start screen for a split second, is the MCU also capable of VDP reset?
smssgamea
-- Different banking, TBD
+- Same issues as smssgame
there are also empty k9/k10/k11/k12 positions, but they were clearly never used.
@@ -258,7 +259,6 @@ class smsbootleg_state : public sms_state
public:
smsbootleg_state(const machine_config &mconfig, device_type type, const char *tag)
: sms_state(mconfig, type, tag)
- , m_rom_view(*this, "rom_view")
, m_game_bank(*this, "game_bank%u", 1U)
, m_game_data(*this, "game_data")
{}
@@ -272,13 +272,13 @@ protected:
virtual void machine_reset() override;
virtual void refresh_banks();
- memory_view m_rom_view;
required_memory_bank_array<3> m_game_bank;
required_memory_region m_game_data;
u8 m_rom_select = 0;
- u8 m_main_bank_mailbox = 0;
- u8 m_sub_bank_mailbox = 0;
+ u8 m_bank_mailbox[2] = { 0, 0 };
+ // menu bank is presumed to initialize with bank 1 on this set (from MCU?)
+ virtual u16 menu_bank() { return 1; }
private:
void port08_w(uint8_t data);
@@ -288,6 +288,17 @@ private:
void sms_supergame_map(address_map &map);
};
+class smsbootleg_a_state : public smsbootleg_state
+{
+public:
+ smsbootleg_a_state(const machine_config &mconfig, device_type type, const char *tag)
+ : smsbootleg_state(mconfig, type, tag)
+ {}
+
+protected:
+ virtual u16 menu_bank() override { return 0; }
+};
+
void smsbootleg_state::machine_start()
{
sms_state::machine_start();
@@ -298,18 +309,18 @@ void smsbootleg_state::machine_start()
void smsbootleg_state::machine_reset()
{
sms_state::machine_reset();
- m_rom_view.select(0);
- for (auto &bank : m_game_bank)
- bank->set_entry(0);
- m_sub_bank_mailbox = 0;
+ m_bank_mailbox[0] = 1;
+ m_bank_mailbox[1] = 2;
+ m_rom_select = menu_bank();
+ refresh_banks();
}
// TODO: different for smssgamea, to be virtualized later
void smsbootleg_state::refresh_banks()
{
const u16 base_rom_bank = ((m_rom_select & 0xf) << 5) + ((m_rom_select & 0xf0) >> 3);
- const u8 main_bank = (m_main_bank_mailbox & 0x7) + ((m_main_bank_mailbox & 8) << 2);
- const u8 sub_bank = (m_sub_bank_mailbox & 0x7) + ((m_sub_bank_mailbox & 8) << 2);
+ const u8 main_bank = (m_bank_mailbox[0] & 0xf);
+ const u8 sub_bank = (m_bank_mailbox[1] & 0xf);
LOG("$0000-$3fff %08x $4000-$7fff %08x $8000-$bfff %08x\n"
, base_rom_bank * 0x4000
@@ -327,26 +338,29 @@ void smsbootleg_state::refresh_banks()
void smsbootleg_state::sms_supergame_map(address_map &map)
{
map.unmap_value_high();
- map(0x0000, 0xfff7).view(m_rom_view);
- m_rom_view[0](0x0000, 0xbfff).rom().region("maincpu", 0);
- m_rom_view[1](0x0000, 0x3fff).bankr("game_bank1");
- m_rom_view[1](0x4000, 0x7fff).bankr("game_bank2");
- m_rom_view[1](0x8000, 0xbfff).bankr("game_bank3");
+ map(0x0000, 0x3fff).bankr("game_bank1");
+ map(0x4000, 0x7fff).bankr("game_bank2");
+ map(0x8000, 0xbfff).bankr("game_bank3");
map(0xc000, 0xfff7).ram();
// map(0xfffc, 0xffff).rw(FUNC(smsbootleg_state::sms_mapper_r), FUNC(smsbootleg_state::sms_mapper_w)); // Bankswitch control
- map(0xfffe, 0xfffe).lw8(
+ // This is basically identical to the base SMS HW
+ // https://www.smspower.org/Development/Mappers#TheSegaMapper
+ map(0xfffe, 0xfffe).lrw8(
+ NAME([this] () {
+ return m_bank_mailbox[0];
+ }),
NAME([this] (u8 data) {
- m_main_bank_mailbox = data;
+ m_bank_mailbox[0] = data;
LOG("map $fffe: %02x\n", data);
refresh_banks();
})
);
map(0xffff, 0xffff).lrw8(
NAME([this] () {
- return m_sub_bank_mailbox;
+ return m_bank_mailbox[1];
}),
NAME([this] (u8 data) {
- m_sub_bank_mailbox = data;
+ m_bank_mailbox[1] = data;
LOG("map $ffff: %02x\n", data);
refresh_banks();
})
@@ -356,7 +370,6 @@ void smsbootleg_state::sms_supergame_map(address_map &map)
void smsbootleg_state::port08_w(uint8_t data)
{
// TODO: the MCU definitely controls this, including switch back to attract menu once timer expires
- m_rom_view.select(1);
m_rom_select = data;
LOG("I/O $08: %02x\n", data);
refresh_banks();
@@ -485,31 +498,23 @@ void smsbootleg_state::sms_supergame(machine_config &config)
void smsbootleg_state::init_sms_supergame()
{
- uint8_t* rom = memregion("maincpu")->base();
uint8_t* game_roms = memregion("game_data")->base();
-
- size_t size = memregion("maincpu")->bytes();
+ size_t size = memregion("game_data")->bytes();
for (int i = 0; i < size; i++)
{
- rom[i] ^= 0x80;
- }
-
- size = memregion("game_data")->bytes();
- for (int i = 0; i < size; i++)
- {
game_roms[i] ^= 0x80;
}
}
ROM_START( smssgame )
- ROM_REGION( 0x10000, "maincpu", 0 )
- ROM_LOAD( "rom1.bin", 0x00000, 0x10000, CRC(0e1f258e) SHA1(9240dc0d01e3061c0c8807c07c0a1d033ebe9116) ) // yes, this rom is smaller (menu rom)
+ ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
ROM_REGION( 0x800000, "game_data", ROMREGION_ERASEFF )
ROM_LOAD( "k2.bin", 0x000000, 0x20000, CRC(a12439f4) SHA1(e957d4fe275e982bedef28af8cc2957da27dc512) ) // Final Bubble Bobble (1/2)
- ROM_LOAD( "k1.bin", 0x080000, 0x20000, CRC(dadffecd) SHA1(68ebb968539049a9e193da5200856b9f956f7e02) ) // Final Bubble Bobble (2/2)
+ ROM_LOAD( "k1.bin", 0x020000, 0x20000, CRC(dadffecd) SHA1(68ebb968539049a9e193da5200856b9f956f7e02) ) // Final Bubble Bobble (2/2)
+ ROM_LOAD( "rom1.bin", 0x80000, 0x10000, CRC(0e1f258e) SHA1(9240dc0d01e3061c0c8807c07c0a1d033ebe9116) ) // yes, this rom is smaller (menu rom)
ROM_LOAD( "k3.bin", 0x100000, 0x20000, CRC(9bb92096) SHA1(3ca17b7a9aa20b97cac1f78ba13f70bed1b37463) ) // Solomon's Key
ROM_LOAD( "k4.bin", 0x180000, 0x20000, CRC(e5903942) SHA1(d0c02f4b37c8a02142868459af14ba8ed0340ccd) ) // Magical Tree / Chustle Chumy / Congo Bongo / Charlie Circus
ROM_LOAD( "k5.bin", 0x200000, 0x20000, CRC(a7b64d1c) SHA1(7c37ac3f37699c49492d4f4ea4e213670413041c) ) // Flicky / Galaxian / King's Valley / Pippos
@@ -531,26 +536,32 @@ ROM_START( smssgame )
ROM_END
+// On this version some games gets loaded from space mirrors (particularly the ones that were using mask roms on the other set)
ROM_START( smssgamea )
- ROM_REGION( 0x10000, "maincpu", 0 )
- ROM_LOAD( "02.k2", 0x000000, 0x10000, CRC(66ed320e) SHA1(e838cb98fbd295259707f8f7ce433b28baa846e3) ) // menu is here on this one
+ ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
ROM_REGION( 0x800000, "game_data", ROMREGION_ERASEFF )
- ROM_LOAD( "01.k1", 0x000000, 0x20000, CRC(18fd8607) SHA1(f24fbe863e19b513369858bf1260355e92444071) ) // Tri-Formation
- ROM_LOAD( "03.k3", 0x080000, 0x20000, CRC(9bb92096) SHA1(3ca17b7a9aa20b97cac1f78ba13f70bed1b37463) ) // Solomon's Key
- ROM_LOAD( "04.k4", 0x100000, 0x20000, CRC(28f6f4a9) SHA1(87809d93b8393b3186672c217fa1dec8b152af16) ) // Maisc Tree, Mouse, Invaders, Astro
- ROM_LOAD( "05.k5", 0x180000, 0x20000, CRC(350591a4) SHA1(ceb3c4a0fc85c5fbc5a045e9c83c3e7ec4d535cc) ) // Congo Bongo, Circus, Super Mario, Ghost House
- ROM_LOAD( "06.k6", 0x200000, 0x20000, CRC(9c5e7cc7) SHA1(4613928e30b7faaa41d550fa41906e13a6059513) ) // Flicky, Galaxian, Bomb Jack, Galaga
- ROM_LOAD( "07.k7", 0x280000, 0x20000, CRC(8046a2c0) SHA1(c80298dd56db8c09cac5263e4c01a627ab1a4cda) ) // Kings Vally, Pippols, Goonies, Road Runner I
- ROM_LOAD( "08.k8", 0x300000, 0x20000, CRC(ee366e0f) SHA1(3770aa71372e7dbdfd357b239a0fbdf8880dc135) ) // Dragon Story, Spy Vs Spy, Road Fighter
- ROM_LOAD( "09.k9", 0x380000, 0x20000, CRC(50a66ef6) SHA1(8eb8d1a7ecca99d1722534be269a6264d49b9dd4) ) // Tetris, Teddy Boy, Pitfall 2
- ROM_LOAD( "10.k10", 0x400000, 0x10000, CRC(ca7ab2df) SHA1(11a85f03ec21d481c5cdfcfb749da20b8569d09a) ) // Drol, Pit Pot
- ROM_LOAD( "11.k11", 0x480000, 0x10000, CRC(b03b612f) SHA1(537b7d72e1e06e17db6206a37f2480c14f46b9fc) ) // Hyper Sports, Super Tank
- ROM_LOAD( "12.k12", 0x500000, 0x20000, CRC(eb1e8693) SHA1(3283cdcfc25f34a43f317093cd39e10a52bc3ae7) ) // Alex Kidd
- ROM_LOAD( "13.rom4", 0x580000, 0x20000, CRC(8767f1c9) SHA1(683cedb001e859c2c7ccde2571104f1eb9f09c2f) ) // Wonderboy
- ROM_LOAD( "14.rom3", 0x600000, 0x20000, CRC(889bb269) SHA1(0a92b339c19240bfea29ee24fee3e7d780b0cd5c) ) // Hello Kang Si
- ROM_LOAD( "15.rom2", 0x680000, 0x20000, CRC(c1478323) SHA1(27b524a234f072e81ef41fb89a5fff5617e9b951) ) // Buk Doo Gun
-// ROM_FILL( 0x200000, 0x80000, 0xff) // ROM1 position not populated
+ ROM_LOAD( "02.k2", 0x000000, 0x10000, CRC(66ed320e) SHA1(e838cb98fbd295259707f8f7ce433b28baa846e3) ) // menu is here on this one
+
+ ROM_LOAD( "01.k1", 0x080000, 0x20000, CRC(18fd8607) SHA1(f24fbe863e19b513369858bf1260355e92444071) ) // Tri-Formation
+ ROM_LOAD( "03.k3", 0x100000, 0x20000, CRC(9bb92096) SHA1(3ca17b7a9aa20b97cac1f78ba13f70bed1b37463) ) // Solomon's Key
+ ROM_LOAD( "04.k4", 0x1a0000, 0x20000, CRC(28f6f4a9) SHA1(87809d93b8393b3186672c217fa1dec8b152af16) ) // Masic Tree, Mouse, Invaders, Astro
+ ROM_LOAD( "05.k5", 0x220000, 0x20000, CRC(350591a4) SHA1(ceb3c4a0fc85c5fbc5a045e9c83c3e7ec4d535cc) ) // Congo Bongo, Circus, Super Mario, Ghost House
+ ROM_LOAD( "06.k6", 0x2a0000, 0x20000, CRC(9c5e7cc7) SHA1(4613928e30b7faaa41d550fa41906e13a6059513) ) // Flicky, Galaxian, Bomb Jack, Galaga
+ ROM_LOAD( "07.k7", 0x320000, 0x20000, CRC(8046a2c0) SHA1(c80298dd56db8c09cac5263e4c01a627ab1a4cda) ) // Kings Vally, Pippols, Goonies, Road Runner I
+ ROM_LOAD( "08.k8", 0x380000, 0x20000, CRC(ee366e0f) SHA1(3770aa71372e7dbdfd357b239a0fbdf8880dc135) ) // Dragon Story, Spy Vs Spy, Road Fighter
+ ROM_RELOAD( 0x3a0000, 0x20000 )
+ ROM_LOAD( "09.k9", 0x400000, 0x20000, CRC(50a66ef6) SHA1(8eb8d1a7ecca99d1722534be269a6264d49b9dd4) ) // Tetris, Teddy Boy, Pitfall 2
+ ROM_RELOAD( 0x420000, 0x20000 )
+ ROM_LOAD( "10.k10", 0x480000, 0x10000, CRC(ca7ab2df) SHA1(11a85f03ec21d481c5cdfcfb749da20b8569d09a) ) // Drol, Pit Pot
+ ROM_RELOAD( 0x4a0000, 0x10000 )
+ ROM_LOAD( "11.k11", 0x500000, 0x10000, CRC(b03b612f) SHA1(537b7d72e1e06e17db6206a37f2480c14f46b9fc) ) // Hyper Sports, Super Tank
+ ROM_RELOAD( 0x520000, 0x10000 )
+ ROM_LOAD( "12.k12", 0x580000, 0x20000, CRC(eb1e8693) SHA1(3283cdcfc25f34a43f317093cd39e10a52bc3ae7) ) // Alex Kidd
+ ROM_LOAD( "13.rom4", 0x600000, 0x20000, CRC(8767f1c9) SHA1(683cedb001e859c2c7ccde2571104f1eb9f09c2f) ) // Wonderboy
+ ROM_LOAD( "14.rom3", 0x680000, 0x20000, CRC(889bb269) SHA1(0a92b339c19240bfea29ee24fee3e7d780b0cd5c) ) // Hello Kang Si
+ ROM_LOAD( "15.rom2", 0x700000, 0x20000, CRC(c1478323) SHA1(27b524a234f072e81ef41fb89a5fff5617e9b951) ) // Buk Doo Gun
+// ROM_FILL( 0x780000, 0x80000, 0xff) // ROM1 position not populated
// there seems to be some kind of MCU for the timer?
ROM_END
@@ -559,5 +570,5 @@ ROM_END
// these haven't been set as clones because they contain different games
-GAME( 199?, smssgame, 0, sms_supergame, sms_supergame, smsbootleg_state, init_sms_supergame, ROT0, "Sono Corp Japan", "Super Game (Sega Master System Multi-game bootleg)", MACHINE_NOT_WORKING )
-GAME( 1990, smssgamea, 0, sms_supergame, sms_supergame, smsbootleg_state, init_sms_supergame, ROT0, "Seo Jin (TV-Tuning license)", "Super Game (Sega Master System Multi-game bootleg) (alt games)", MACHINE_NOT_WORKING ) // for German market?
+GAME( 199?, smssgame, 0, sms_supergame, sms_supergame, smsbootleg_state, init_sms_supergame, ROT0, "Sono Corp Japan", "Super Game (Sega Master System Multi-game bootleg, 01 Final Bubble Bobble)", MACHINE_NOT_WORKING )
+GAME( 1990, smssgamea, 0, sms_supergame, sms_supergame, smsbootleg_a_state, init_sms_supergame, ROT0, "Seo Jin (TV-Tuning license)", "Super Game (Sega Master System Multi-game bootleg, 01 Tri Formation)", MACHINE_NOT_WORKING ) // for German market?