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Better guess at Sega sound data serial rate (nw)

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This commit is contained in:
AJR 2017-04-16 20:51:50 -04:00
parent 2cc10c65d0
commit 393e5288d6
6 changed files with 9 additions and 11 deletions
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2
src/mame/audio/dsbz80.cpp
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@ -41,7 +41,7 @@ MACHINE_CONFIG_FRAGMENT( dsbz80 )
MCFG_I8251_RXRDY_HANDLER(INPUTLINE(Z80_TAG, INPUT_LINE_IRQ0))
MCFG_I8251_TXD_HANDLER(WRITELINE(dsbz80_device, output_txd))
MCFG_CLOCK_ADD("uart_clock", 100000)
MCFG_CLOCK_ADD("uart_clock", 500000) // 16 times 31.25MHz (standard Sega/MIDI sound data rate)
MCFG_CLOCK_SIGNAL_HANDLER(DEVWRITELINE("uart", i8251_device, write_rxc))
MACHINE_CONFIG_END

2
src/mame/audio/segam1audio.cpp
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@ -65,7 +65,7 @@ MACHINE_CONFIG_FRAGMENT( segam1audio )
MCFG_I8251_RXRDY_HANDLER(INPUTLINE(M68000_TAG, M68K_IRQ_2))
MCFG_I8251_TXD_HANDLER(WRITELINE(segam1audio_device, output_txd))
MCFG_CLOCK_ADD("uart_clock", M1AUDIO_TXRX_CLOCK) // unknown rate
MCFG_CLOCK_ADD("uart_clock", 500000) // 16 times 31.25MHz (standard Sega/MIDI sound data rate)
MCFG_CLOCK_SIGNAL_HANDLER(DEVWRITELINE(UART_TAG, i8251_device, write_txc))
MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE(UART_TAG, i8251_device, write_rxc))
MACHINE_CONFIG_END

2
src/mame/audio/segam1audio.h
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@ -14,8 +14,6 @@
#define M1AUDIO_MPCM1_REGION "m1pcm1"
#define M1AUDIO_MPCM2_REGION "m1pcm2"
#define M1AUDIO_TXRX_CLOCK 100000 // unknown
#define MCFG_SEGAM1AUDIO_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, SEGAM1AUDIO, 0)

4
src/mame/drivers/model1.cpp
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@ -1630,7 +1630,7 @@ static MACHINE_CONFIG_START( model1, model1_state )
MCFG_DEVICE_ADD("m1uart", I8251, 8000000) // uPD71051C, clock unknown
MCFG_I8251_TXD_HANDLER(DEVWRITELINE("m1audio", segam1audio_device, write_txd))
MCFG_CLOCK_ADD("m1uart_clock", M1AUDIO_TXRX_CLOCK) // unknown rate
MCFG_CLOCK_ADD("m1uart_clock", 500000) // 16 times 31.25MHz (standard Sega/MIDI sound data rate)
MCFG_CLOCK_SIGNAL_HANDLER(DEVWRITELINE("m1uart", i8251_device, write_txc))
MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("m1uart", i8251_device, write_rxc))
@ -1687,7 +1687,7 @@ static MACHINE_CONFIG_START( model1_vr, model1_state )
MCFG_DEVICE_ADD("m1uart", I8251, 8000000) // uPD71051C, clock unknown
MCFG_I8251_TXD_HANDLER(DEVWRITELINE("m1audio", segam1audio_device, write_txd))
MCFG_CLOCK_ADD("m1uart_clock", M1AUDIO_TXRX_CLOCK) // unknown rate
MCFG_CLOCK_ADD("m1uart_clock", 500000) // 16 times 31.25MHz (standard Sega/MIDI sound data rate)
MCFG_CLOCK_SIGNAL_HANDLER(DEVWRITELINE("m1uart", i8251_device, write_txc))
MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("m1uart", i8251_device, write_rxc))

8
src/mame/drivers/model2.cpp
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@ -2417,7 +2417,7 @@ static MACHINE_CONFIG_START( model2o, model2_state )
MCFG_DEVICE_ADD("uart", I8251, 8000000) // uPD71051C, clock unknown
MCFG_I8251_TXD_HANDLER(DEVWRITELINE("m1audio", segam1audio_device, write_txd))
MCFG_CLOCK_ADD("uart_clock", M1AUDIO_TXRX_CLOCK) // unknown rate
MCFG_CLOCK_ADD("uart_clock", 500000) // 16 times 31.25MHz (standard Sega/MIDI sound data rate)
MCFG_CLOCK_SIGNAL_HANDLER(DEVWRITELINE("uart", i8251_device, write_txc))
MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("uart", i8251_device, write_rxc))
@ -2476,7 +2476,7 @@ static MACHINE_CONFIG_START( model2a, model2_state )
MCFG_DEVICE_ADD("uart", I8251, 8000000) // uPD71051C, clock unknown
MCFG_CLOCK_ADD("uart_clock", M1AUDIO_TXRX_CLOCK) // unknown rate
MCFG_CLOCK_ADD("uart_clock", 500000) // 16 times 31.25MHz (standard Sega/MIDI sound data rate)
MCFG_CLOCK_SIGNAL_HANDLER(DEVWRITELINE("uart", i8251_device, write_txc))
MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("uart", i8251_device, write_rxc))
@ -2608,7 +2608,7 @@ static MACHINE_CONFIG_START( model2b, model2_state )
MCFG_DEVICE_ADD("uart", I8251, 8000000) // uPD71051C, clock unknown
MCFG_CLOCK_ADD("uart_clock", M1AUDIO_TXRX_CLOCK) // unknown rate
MCFG_CLOCK_ADD("uart_clock", 500000) // 16 times 31.25MHz (standard Sega/MIDI sound data rate)
MCFG_CLOCK_SIGNAL_HANDLER(DEVWRITELINE("uart", i8251_device, write_txc))
MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("uart", i8251_device, write_rxc))
@ -2698,7 +2698,7 @@ static MACHINE_CONFIG_START( model2c, model2_state )
MCFG_DEVICE_ADD("uart", I8251, 8000000) // uPD71051C, clock unknown
MCFG_CLOCK_ADD("uart_clock", M1AUDIO_TXRX_CLOCK) // unknown rate
MCFG_CLOCK_ADD("uart_clock", 500000) // 16 times 31.25MHz (standard Sega/MIDI sound data rate)
MCFG_CLOCK_SIGNAL_HANDLER(DEVWRITELINE("uart", i8251_device, write_txc))
MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("uart", i8251_device, write_rxc))

2
src/mame/drivers/model3.cpp
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@ -5805,7 +5805,7 @@ static MACHINE_CONFIG_DERIVED(scud, model3_15)
MCFG_DEVICE_ADD("uart", I8251, 8000000) // uPD71051
MCFG_I8251_TXD_HANDLER(DEVWRITELINE(DSBZ80_TAG, dsbz80_device, write_txd))
MCFG_CLOCK_ADD("uart_clock", 100000) // unknown rate
MCFG_CLOCK_ADD("uart_clock", 500000) // 16 times 31.25MHz (standard Sega/MIDI sound data rate)
MCFG_CLOCK_SIGNAL_HANDLER(DEVWRITELINE("uart", i8251_device, write_txc))
MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("uart", i8251_device, write_rxc))
MACHINE_CONFIG_END