diff options
-rw-r--r-- | src/mame/audio/snes_snd.cpp | 3 | ||||
-rw-r--r-- | src/mame/drivers/nss.cpp | 3 | ||||
-rw-r--r-- | src/mame/drivers/sfcbox.cpp | 3 | ||||
-rw-r--r-- | src/mame/drivers/snes.cpp | 3 | ||||
-rw-r--r-- | src/mame/drivers/snesb.cpp | 3 |
5 files changed, 10 insertions, 5 deletions
diff --git a/src/mame/audio/snes_snd.cpp b/src/mame/audio/snes_snd.cpp index d8dc6ab583f..42b206c2072 100644 --- a/src/mame/audio/snes_snd.cpp +++ b/src/mame/audio/snes_snd.cpp @@ -1156,7 +1156,8 @@ WRITE8_MEMBER( snes_sound_device::spc_io_w ) case 0x7: /* Port 3 */ // osd_printf_debug("SPC: %02x to APU @ %d %s\n", data, offset & 3, machine().describe_context()); m_port_out[offset - 4] = data; - machine().scheduler().boost_interleave(attotime::zero, attotime::from_usec(20)); + // Unneeded, we already run at perfect_interleave + // machine().scheduler().boost_interleave(attotime::zero, attotime::from_usec(20)); break; case 0xa: /* Timer 0 */ case 0xb: /* Timer 1 */ diff --git a/src/mame/drivers/nss.cpp b/src/mame/drivers/nss.cpp index 57ce1816ca7..67b7bc3a70c 100644 --- a/src/mame/drivers/nss.cpp +++ b/src/mame/drivers/nss.cpp @@ -823,7 +823,8 @@ static MACHINE_CONFIG_START( nss ) MCFG_CPU_ADD("maincpu", _5A22, MCLK_NTSC) /* 2.68Mhz, also 3.58Mhz */ MCFG_CPU_PROGRAM_MAP(snes_map) - MCFG_CPU_ADD("soundcpu", SPC700, 2048000/2) /* 2.048 Mhz, but internal divider */ + // runs at 24.576 MHz / 12 = 2.048 MHz + MCFG_CPU_ADD("soundcpu", SPC700, XTAL_24_576MHz / 12) MCFG_CPU_PROGRAM_MAP(spc_mem) MCFG_QUANTUM_PERFECT_CPU("maincpu") diff --git a/src/mame/drivers/sfcbox.cpp b/src/mame/drivers/sfcbox.cpp index 1317fa7a7bc..4e03d1f0285 100644 --- a/src/mame/drivers/sfcbox.cpp +++ b/src/mame/drivers/sfcbox.cpp @@ -451,7 +451,8 @@ static MACHINE_CONFIG_START( sfcbox ) MCFG_CPU_ADD("maincpu", _5A22, 3580000*6) /* 2.68Mhz, also 3.58Mhz */ MCFG_CPU_PROGRAM_MAP(snes_map) - MCFG_CPU_ADD("soundcpu", SPC700, 2048000/2) /* 2.048 Mhz, but internal divider */ + // runs at 24.576 MHz / 12 = 2.048 MHz + MCFG_CPU_ADD("soundcpu", SPC700, XTAL_24_576MHz / 12) MCFG_CPU_PROGRAM_MAP(spc_mem) MCFG_QUANTUM_PERFECT_CPU("maincpu") diff --git a/src/mame/drivers/snes.cpp b/src/mame/drivers/snes.cpp index b0280949519..eb3b2e51ae8 100644 --- a/src/mame/drivers/snes.cpp +++ b/src/mame/drivers/snes.cpp @@ -1331,7 +1331,8 @@ static MACHINE_CONFIG_START( snes ) MCFG_CPU_ADD("maincpu", _5A22, MCLK_NTSC) /* 2.68 MHz, also 3.58 MHz */ MCFG_CPU_PROGRAM_MAP(snes_map) - MCFG_CPU_ADD("soundcpu", SPC700, XTAL_24_576MHz / 24) /* 1.024 MHz */ + // runs at 24.576 MHz / 12 = 2.048 MHz + MCFG_CPU_ADD("soundcpu", SPC700, XTAL_24_576MHz / 12) MCFG_CPU_PROGRAM_MAP(spc_map) //MCFG_QUANTUM_TIME(attotime::from_hz(48000)) diff --git a/src/mame/drivers/snesb.cpp b/src/mame/drivers/snesb.cpp index 277d445f285..bc90590097d 100644 --- a/src/mame/drivers/snesb.cpp +++ b/src/mame/drivers/snesb.cpp @@ -693,7 +693,8 @@ static MACHINE_CONFIG_START( kinstb ) MCFG_CPU_PROGRAM_MAP(snesb_map) /* audio CPU */ - MCFG_CPU_ADD("soundcpu", SPC700, 2048000/2) /* 2.048 Mhz, but internal divider */ + // runs at 24.576 MHz / 12 = 2.048 MHz + MCFG_CPU_ADD("soundcpu", SPC700, XTAL_24_576MHz / 12) MCFG_CPU_PROGRAM_MAP(spc_mem) MCFG_QUANTUM_PERFECT_CPU("maincpu") |