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Added preliminary MCU handshake simulation sequence for astyanax, hachoo, jitsupro, plusalph, stdragon and removed ROM patches in those games [Angelo Salese]

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This commit is contained in:
Angelo Salese 2011-09-08 00:35:32 +00:00
parent 00e0852cd3
commit 6daee189f1
2 changed files with 147 additions and 38 deletions
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182
src/mame/drivers/megasys1.c
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@ -135,6 +135,7 @@ static MACHINE_RESET( megasys1 )
megasys1_state *state = machine.driver_data<megasys1_state>();
state->m_ignore_oki_status = 1; /* ignore oki status due 'protection' */
state->m_ip_select = 0; /* reset protection */
state->m_mcu_hs = 0;
}
static MACHINE_RESET( megasys1_hachoo )
@ -142,6 +143,7 @@ static MACHINE_RESET( megasys1_hachoo )
megasys1_state *state = machine.driver_data<megasys1_state>();
state->m_ignore_oki_status = 0; /* strangely hachoo need real oki status */
state->m_ip_select = 0; /* reset protection */
state->m_mcu_hs = 0;
}
@ -3656,6 +3658,21 @@ static void stdragona_gfx_unmangle(running_machine &machine, const char *region)
*
*************************************/
/*
MCU handshake sequence:
the M50747 MCU can overlay 0x20 bytes of data inside the ROM space.
The offset where this happens is given by m68k to MCU write [0x8/2] << 6.
For example stdragon writes 0x33e -> maps at 0xcf80-0xcfbf while stdragona writes 0x33f -> maps at 0xcfc0-0xcfff.
*/
#define MCU_HS_LOG 0
#define MCU_HS_SEQ(_1_,_2_,_3_,_4_) \
(state->m_mcu_hs_ram[0/2] == _1_ && \
state->m_mcu_hs_ram[2/2] == _2_ && \
state->m_mcu_hs_ram[4/2] == _3_ && \
state->m_mcu_hs_ram[6/2] == _4_)
static DRIVER_INIT( 64street )
{
megasys1_state *state = machine.driver_data<megasys1_state>();
@ -3670,14 +3687,53 @@ static DRIVER_INIT( 64street )
state->m_ip_select_values[4] = 0x56;
}
static READ16_HANDLER( megasys1A_mcu_hs_r )
{
UINT16 *ROM = (UINT16 *) space->machine().region("maincpu")->base();
megasys1_state *state = space->machine().driver_data<megasys1_state>();
if(state->m_mcu_hs && ((state->m_mcu_hs_ram[8/2] << 6) & 0x3ffc0) == ((offset*2) & 0x3ffc0))
{
if(MCU_HS_LOG && !space->debugger_access())
printf("MCU HS R (%04x) <- [%02x]\n",mem_mask,offset*2);
return 0x889e;
}
return ROM[offset];
}
static WRITE16_HANDLER( megasys1A_mcu_hs_w )
{
megasys1_state *state = space->machine().driver_data<megasys1_state>();
// following is hachoo, other games differs slightly
// R 0x5f0, if bit 0 == 0 then skips hs seq (debug?)
// [0/2]: 0x00ff
// [2/2]: 0x0055
// [4/2]: 0x00aa
// [6/2]: 0x0000
// [8/2]: 0x0fff
// R 0x5f0, if bit 1 == 0 then goes further (debug again?)
// R 0x3ffc0, compares with seed 0x889e
COMBINE_DATA(&state->m_mcu_hs_ram[offset]);
if(MCU_HS_SEQ(0x00ff,0x0055,0x00aa,0x0000) && offset == 0x8/2)
state->m_mcu_hs = 1;
else
state->m_mcu_hs = 0;
if(MCU_HS_LOG && !space->debugger_access())
printf("MCU HS W %04x (%04x) -> [%02x]\n",data,mem_mask,offset*2);
}
static DRIVER_INIT( astyanax )
{
UINT16 *RAM;
astyanax_rom_decode(machine, "maincpu");
RAM = (UINT16 *) machine.region("maincpu")->base();
RAM[0x0004e6/2] = 0x6040; // protection
machine.device("maincpu")->memory().space(AS_PROGRAM)->install_legacy_read_handler(0x00000, 0x3ffff, FUNC(megasys1A_mcu_hs_r));
machine.device("maincpu")->memory().space(AS_PROGRAM)->install_legacy_write_handler(0x20000, 0x20009, FUNC(megasys1A_mcu_hs_w));
}
static DRIVER_INIT( avspirit )
@ -3746,17 +3802,6 @@ static DRIVER_INIT( edfbl )
machine.device("maincpu")->memory().space(AS_PROGRAM)->install_legacy_read_handler(0xe0002, 0xe000b, FUNC(edfbl_input_r));
}
static DRIVER_INIT( hachoo )
{
UINT16 *RAM;
astyanax_rom_decode(machine, "maincpu");
RAM = (UINT16 *) machine.region("maincpu")->base();
RAM[0x0006da/2] = 0x6000; // protection
}
static DRIVER_INIT( hayaosi1 )
{
megasys1_state *state = machine.driver_data<megasys1_state>();
@ -3767,6 +3812,44 @@ static DRIVER_INIT( hayaosi1 )
state->m_ip_select_values[4] = 0x55;
}
static READ16_HANDLER( iganinju_mcu_hs_r )
{
UINT16 *ROM = (UINT16 *) space->machine().region("maincpu")->base();
megasys1_state *state = space->machine().driver_data<megasys1_state>();
if(state->m_mcu_hs && ((state->m_mcu_hs_ram[8/2] << 6) & 0x3ffc0) == ((offset*2) & 0x3ffc0))
{
if(MCU_HS_LOG && !space->debugger_access())
printf("MCU HS R (%04x) <- [%02x]\n",mem_mask,offset*2);
return 0x835d;
}
return ROM[offset];
}
static WRITE16_HANDLER( iganinju_mcu_hs_w )
{
megasys1_state *state = space->machine().driver_data<megasys1_state>();
// [0/2]: 0x0000
// [2/2]: 0x0055
// [4/2]: 0x00aa
// [6/2]: 0x00ff
// [8/2]: 0x0bc0
// expects 0x835d to be read at 0x2f000, does hs sequence until that happens
COMBINE_DATA(&state->m_mcu_hs_ram[offset]);
if(MCU_HS_SEQ(0x0000,0x0055,0x00aa,0x00ff) && offset == 0x8/2)
state->m_mcu_hs = 1;
else
state->m_mcu_hs = 0;
if(MCU_HS_LOG && !space->debugger_access())
printf("MCU HS W %04x (%04x) -> [%02x]\n",data,mem_mask,offset*2);
}
static DRIVER_INIT( iganinju )
{
UINT16 *RAM;
@ -3774,7 +3857,9 @@ static DRIVER_INIT( iganinju )
phantasm_rom_decode(machine, "maincpu");
RAM = (UINT16 *) machine.region("maincpu")->base();
RAM[0x02f000/2] = 0x835d; // protection
machine.device("maincpu")->memory().space(AS_PROGRAM)->install_legacy_read_handler(0x00000, 0x3ffff, FUNC(iganinju_mcu_hs_r));
machine.device("maincpu")->memory().space(AS_PROGRAM)->install_legacy_write_handler(0x2f000, 0x2f009, FUNC(iganinju_mcu_hs_w));
RAM[0x00006e/2] = 0x0420; // the only game that does
// not like lev 3 interrupts
@ -3791,15 +3876,15 @@ static DRIVER_INIT( jitsupro )
{
device_t *oki1 = machine.device("oki1");
device_t *oki2 = machine.device("oki2");
UINT16 *RAM = (UINT16 *) machine.region("maincpu")->base();
//UINT16 *RAM = (UINT16 *) machine.region("maincpu")->base();
astyanax_rom_decode(machine, "maincpu"); // Code
jitsupro_gfx_unmangle(machine, "gfx1"); // Gfx
jitsupro_gfx_unmangle(machine, "gfx4");
RAM[0x436/2] = 0x4e71; // protection
RAM[0x438/2] = 0x4e71; //
machine.device("maincpu")->memory().space(AS_PROGRAM)->install_legacy_read_handler(0x00000, 0x3ffff, FUNC(megasys1A_mcu_hs_r));
machine.device("maincpu")->memory().space(AS_PROGRAM)->install_legacy_write_handler(0x20000, 0x20009, FUNC(megasys1A_mcu_hs_w));
/* the sound code writes oki commands to both the lsb and msb */
machine.device("soundcpu")->memory().space(AS_PROGRAM)->install_legacy_write_handler(*oki1, 0xa0000, 0xa0003, FUNC(okim6295_both_w));
@ -3816,16 +3901,6 @@ static DRIVER_INIT( phantasm )
phantasm_rom_decode(machine, "maincpu");
}
static DRIVER_INIT( plusalph )
{
UINT16 *RAM;
astyanax_rom_decode(machine, "maincpu");
RAM = (UINT16 *) machine.region("maincpu")->base();
RAM[0x0012b6/2] = 0x0000; // protection
}
static DRIVER_INIT( rodland )
{
rodland_rom_decode(machine, "maincpu");
@ -3844,6 +3919,7 @@ static READ16_HANDLER( soldamj_spriteram16_r )
megasys1_state *state = space->machine().driver_data<megasys1_state>();
return state->m_spriteram[offset];
}
static WRITE16_HANDLER( soldamj_spriteram16_w )
{
megasys1_state *state = space->machine().driver_data<megasys1_state>();
@ -3867,27 +3943,57 @@ static DRIVER_INIT( soldam )
}
static READ16_HANDLER( stdragon_mcu_hs_r )
{
UINT16 *ROM = (UINT16 *) space->machine().region("maincpu")->base();
megasys1_state *state = space->machine().driver_data<megasys1_state>();
if(state->m_mcu_hs && ((state->m_mcu_hs_ram[8/2] << 6) & 0x3ffc0) == ((offset*2) & 0x3ffc0))
{
if(MCU_HS_LOG && !space->debugger_access())
printf("MCU HS R (%04x) <- [%02x]\n",mem_mask,offset*2);
return 0x835d;
}
return ROM[offset];
}
static WRITE16_HANDLER( stdragon_mcu_hs_w )
{
megasys1_state *state = space->machine().driver_data<megasys1_state>();
COMBINE_DATA(&state->m_mcu_hs_ram[offset]);
if(MCU_HS_SEQ(0x0000,0x0055,0x00aa,0x00ff) && offset == 0x8/2)
state->m_mcu_hs = 1;
else
state->m_mcu_hs = 0;
if(MCU_HS_LOG && !space->debugger_access())
printf("MCU HS W %04x (%04x) -> [%02x]\n",data,mem_mask,offset*2);
}
static DRIVER_INIT( stdragon )
{
UINT16 *RAM;
phantasm_rom_decode(machine, "maincpu");
RAM = (UINT16 *) machine.region("maincpu")->base();
RAM[0x00045e/2] = 0x0098; // protection
machine.device("maincpu")->memory().space(AS_PROGRAM)->install_legacy_read_handler(0x00000, 0x3ffff, FUNC(stdragon_mcu_hs_r));
machine.device("maincpu")->memory().space(AS_PROGRAM)->install_legacy_write_handler(0x23ff0, 0x23ff9, FUNC(stdragon_mcu_hs_w));
}
static DRIVER_INIT( stdragona )
{
UINT16 *RAM;
//UINT16 *RAM;
phantasm_rom_decode(machine, "maincpu");
stdragona_gfx_unmangle(machine, "gfx1");
stdragona_gfx_unmangle(machine, "gfx4");
RAM = (UINT16 *) machine.region("maincpu")->base();
RAM[0x000458/2] = 0x0098; // protection
machine.device("maincpu")->memory().space(AS_PROGRAM)->install_legacy_read_handler(0x00000, 0x3ffff, FUNC(stdragon_mcu_hs_r));
machine.device("maincpu")->memory().space(AS_PROGRAM)->install_legacy_write_handler(0x23ff0, 0x23ff9, FUNC(stdragon_mcu_hs_w));
}
static READ16_HANDLER( monkelf_input_r )
@ -3924,9 +4030,9 @@ GAME( 1988, kazan, 0, system_A, kazan, iganinju, ROT0, "
GAME( 1988, iganinju, kazan, system_A, kazan, iganinju, ROT0, "Jaleco", "Iga Ninjyutsuden (Japan)", 0 )
GAME( 1989, astyanax, 0, system_A, astyanax, astyanax, ROT0, "Jaleco", "The Astyanax", 0 )
GAME( 1989, lordofk, astyanax, system_A, astyanax, astyanax, ROT0, "Jaleco", "The Lord of King (Japan)", 0 )
GAME( 1989, hachoo, 0, system_A_hachoo, hachoo, hachoo, ROT0, "Jaleco", "Hachoo!", 0 )
GAME( 1989, hachoo, 0, system_A_hachoo, hachoo, astyanax, ROT0, "Jaleco", "Hachoo!", 0 )
GAME( 1989, jitsupro, 0, system_A, jitsupro, jitsupro, ROT0, "Jaleco", "Jitsuryoku!! Pro Yakyuu (Japan)", 0 )
GAME( 1989, plusalph, 0, system_A, plusalph, plusalph, ROT270, "Jaleco", "Plus Alpha", 0 )
GAME( 1989, plusalph, 0, system_A, plusalph, astyanax, ROT270, "Jaleco", "Plus Alpha", 0 )
GAME( 1989, stdragon, 0, system_A, stdragon, stdragon, ROT0, "Jaleco", "Saint Dragon (set 1)", 0 )
GAME( 1989, stdragona,stdragon, system_A, stdragon, stdragona,ROT0, "Jaleco", "Saint Dragon (set 2)", GAME_NOT_WORKING ) // gfx scramble
GAME( 1990, rodland, 0, system_A, rodland, rodland, ROT0, "Jaleco", "Rod-Land (World)", 0 )

3
src/mame/includes/megasys1.h
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@ -48,6 +48,9 @@ public:
UINT16 *m_buffer_spriteram16;
UINT16 *m_buffer2_spriteram16;
int m_layers_order[16];
int m_mcu_hs;
UINT16 m_mcu_hs_ram[0x10];
};