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author | AJR <ajrhacker@users.noreply.github.com> | 2017-04-18 18:20:19 -0400 |
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committer | AJR <ajrhacker@users.noreply.github.com> | 2017-04-18 18:20:19 -0400 |
commit | 298e2ba13c89461f4d795ef8dc1f350686d2b1d0 (patch) | |
tree | d6f2b90ddc1ca3170c8cf519462ea33f62678705 /src/mame | |
parent | 6b8de76b12498b641053e1ef97f7293b5bf46699 (diff) |
segaybd.cpp: Correct I/O clock; misc. notes (nw)
Diffstat (limited to 'src/mame')
-rw-r--r-- | src/mame/drivers/segaybd.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/mame/drivers/segaybd.cpp b/src/mame/drivers/segaybd.cpp index 85f045850b6..ddd471d2b6f 100644 --- a/src/mame/drivers/segaybd.cpp +++ b/src/mame/drivers/segaybd.cpp @@ -89,6 +89,7 @@ const uint32_t SOUND_CLOCK = 32215900; //------------------------------------------------- // analog_mux - handle multiplexed analog input +// (HC4052 at IC121) //------------------------------------------------- ioport_value segaybd_state::analog_mux() @@ -1323,7 +1324,7 @@ static MACHINE_CONFIG_START( yboard, segaybd_state ) MCFG_MB3773_ADD("watchdog") // IC95 - MCFG_DEVICE_ADD("io", SEGA_315_5296, 16000000) // probably SOUND_CLOCK/n + MCFG_DEVICE_ADD("io", SEGA_315_5296, MASTER_CLOCK/8) MCFG_315_5296_IN_PORTA_CB(IOPORT("P1")) MCFG_315_5296_IN_PORTB_CB(IOPORT("GENERAL")) MCFG_315_5296_IN_PORTC_CB(IOPORT("LIMITSW")) @@ -1332,6 +1333,7 @@ static MACHINE_CONFIG_START( yboard, segaybd_state ) MCFG_315_5296_IN_PORTF_CB(IOPORT("DSW")) MCFG_315_5296_IN_PORTG_CB(IOPORT("COINAGE")) MCFG_315_5296_OUT_PORTH_CB(WRITE8(segaybd_state, output2_w)) + // FMCS and CKOT connect to CS and OSC IN on MSM6253 below MCFG_DEVICE_ADD("adc", MSM6253, 0) MCFG_MSM6253_IN0_ANALOG_PORT("ADC.0") |