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cop01.cpp: improved Mighty Guy sound [Angelo Salese]

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This commit is contained in:
angelosa 2017-06-14 07:09:50 +02:00
parent 6e67948975
commit 7f99ec6790
2 changed files with 63 additions and 14 deletions
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70
src/mame/drivers/cop01.cpp
View File

@ -173,12 +173,12 @@ ADDRESS_MAP_END
/*
* sound "protection" uses address/data to ports 2/3 (R/W)
* Register map:
* 0x32: always 5, dac transfer trigger?
* 0x32: always 5, rom read trigger?
* 0x33: - address 1 (source?)
* 0x34: /
* 0x35: - address 2 (size?)
* 0x35: - address 2 (adjust value in rom?)
* 0x36: /
* 0x37: R reused for ym3526 register set
* 0x37: R reused for ym3526 register set, read protection rom (same as amatelas)
*
* 0x40: counter set, always 1?
* 0x41: R bit 0 pulse timer? W oneshot timer?
@ -190,17 +190,61 @@ ADDRESS_MAP_END
*/
/* this just gets some garbage out of the YM3526 */
READ8_MEMBER(cop01_state::kludge)
READ8_MEMBER(cop01_state::prot_data_r)
{
return m_timer++;
if(m_prot_command == 0x41)
return (m_audiocpu->total_cycles() / 0x34) & 1; // wrong
if(m_prot_command == 0x37)
{
uint16_t prot_offset = (m_prot_reg[1]<<8)|(m_prot_reg[2]);
uint8_t *prot_rom = memregion("prot_data")->base();
// 0x37c are BGMs while 0x34e are SFXs?
uint8_t prot_adj = 0x82; //0xbd
//printf("%02x",(prot_rom[prot_offset] - 0x44) & 0xff);
return prot_rom[prot_offset & 0x1fff] - prot_adj; // minus value correct?
}
if(m_prot_command == 0x92) // affects coin SFX playback
return 1;
if(m_prot_command == 0x94)
return 0;
return 0;
}
WRITE8_MEMBER(cop01_state::prot_address_w)
{
m_prot_command = data;
}
WRITE8_MEMBER(cop01_state::prot_data_w)
{
if( m_prot_command>=0x32 && m_prot_command<=0x37 )
{
m_prot_reg[m_prot_command-0x32] = data;
#if 0
if(m_prot_command == 0x32)
{
for(int i=0;i<6;i++)
printf("%02x ",m_prot_reg[i]);
printf("\n");
}
#endif
}
}
static ADDRESS_MAP_START( mightguy_audio_io_map, AS_IO, 8, cop01_state )
ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0x00, 0x01) AM_DEVWRITE("ymsnd", ym3526_device, write)
AM_RANGE(0x02, 0x02) AM_WRITENOP /* 1412M2 address? */
AM_RANGE(0x03, 0x03) AM_WRITENOP /* 1412M2 data? */
AM_RANGE(0x03, 0x03) AM_READ(kludge) /* 1412M2? */
AM_RANGE(0x02, 0x02) AM_WRITE(prot_address_w) /* 1412M2 address? */
AM_RANGE(0x03, 0x03) AM_WRITE(prot_data_w) /* 1412M2 data? */
AM_RANGE(0x03, 0x03) AM_READ(prot_data_r) /* 1412M2? */
AM_RANGE(0x06, 0x06) AM_READ(cop01_sound_command_r)
ADDRESS_MAP_END
@ -338,9 +382,9 @@ static INPUT_PORTS_START( mightguy )
PORT_DIPNAME( 0x04, 0x04, DEF_STR( Bonus_Life ) )
PORT_DIPSETTING( 0x04, "Every 200k" )
PORT_DIPSETTING( 0x00, "500k only" )
PORT_DIPNAME( 0x08, 0x08, DEF_STR( Demo_Sounds ) )
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x08, DEF_STR( On ) )
PORT_DIPNAME( 0x08, 0x00, DEF_STR( Demo_Sounds ) ) // actually reversed compared to service mode
PORT_DIPSETTING( 0x08, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x10, 0x00, DEF_STR( Cabinet ) )
PORT_DIPSETTING( 0x00, DEF_STR( Upright ) )
PORT_DIPSETTING( 0x10, DEF_STR( Cocktail ) )
@ -632,7 +676,7 @@ ROM_START( mightguy )
ROM_REGION( 0x10000, "audiocpu", 0 ) /* Z80 code (sound cpu) */
ROM_LOAD( "11.15b", 0x0000, 0x4000, CRC(576183ea) SHA1(e3f28e8e8c34ab396d158da122584ed226729c99) )
ROM_REGION( 0x8000, "user1", 0 ) /* 1412M2 protection data, z80 encrypted code presumably */
ROM_REGION( 0x8000, "prot_data", 0 ) /* 1412M2 protection data, z80 encrypted code presumably */
ROM_LOAD( "10.ic2", 0x0000, 0x8000, CRC(1a5d2bb1) SHA1(0fd4636133a980ba9ffa076f9010474586d37635) )
ROM_REGION( 0x02000, "gfx1", 0 ) /* alpha */
@ -688,4 +732,4 @@ DRIVER_INIT_MEMBER(cop01_state,mightguy)
GAME( 1985, cop01, 0, cop01, cop01, cop01_state, 0, ROT0, "Nichibutsu", "Cop 01 (set 1)", MACHINE_SUPPORTS_SAVE )
GAME( 1985, cop01a, cop01, cop01, cop01, cop01_state, 0, ROT0, "Nichibutsu", "Cop 01 (set 2)", MACHINE_SUPPORTS_SAVE )
GAME( 1986, mightguy, 0, mightguy, mightguy, cop01_state, mightguy, ROT270, "Nichibutsu", "Mighty Guy", MACHINE_NO_SOUND | MACHINE_SUPPORTS_SAVE )
GAME( 1986, mightguy, 0, mightguy, mightguy, cop01_state, mightguy, ROT270, "Nichibutsu", "Mighty Guy", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )

7
src/mame/includes/cop01.h
View File

@ -35,7 +35,9 @@ public:
/* sound-related */
int m_pulse;
int m_timer; // kludge for ym3526 in mightguy
uint8_t m_prot_command;
uint8_t m_prot_reg[6];
/* devices */
required_device<cpu_device> m_maincpu;
required_device<cpu_device> m_audiocpu;
@ -51,6 +53,9 @@ public:
DECLARE_WRITE8_MEMBER(cop01_background_w);
DECLARE_WRITE8_MEMBER(cop01_foreground_w);
DECLARE_WRITE8_MEMBER(cop01_vreg_w);
DECLARE_WRITE8_MEMBER(prot_address_w);
DECLARE_WRITE8_MEMBER(prot_data_w);
DECLARE_READ8_MEMBER(prot_data_r);
DECLARE_CUSTOM_INPUT_MEMBER(mightguy_area_r);
DECLARE_DRIVER_INIT(mightguy);
TILE_GET_INFO_MEMBER(get_bg_tile_info);