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segaybd.cpp: Correct I/O clock; misc. notes (nw)

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This commit is contained in:
AJR 2017-04-18 18:20:19 -04:00
parent 6b8de76b12
commit 298e2ba13c
1 changed files with 3 additions and 1 deletions
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4
src/mame/drivers/segaybd.cpp
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@ -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")