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novagmcs48: added octo 15mhz version (nw)

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This commit is contained in:
hap 2017-04-26 16:45:46 +02:00
parent 25ab376c4c
commit bfcac4b2ec
1 changed files with 35 additions and 4 deletions
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39
src/mame/drivers/novagmcs48.cpp
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@ -12,7 +12,7 @@
TODO:
- is presto led handling correct? mux data needs to be auto cleared
similar to diablo/sexpert
similar to diablo/sexpert. cpu color led should be on while thinking
******************************************************************************
@ -49,6 +49,9 @@ public:
DECLARE_WRITE8_MEMBER(presto_mux_w);
DECLARE_WRITE8_MEMBER(presto_control_w);
DECLARE_READ8_MEMBER(presto_input_r);
DECLARE_MACHINE_RESET(octo);
DECLARE_INPUT_CHANGED_MEMBER(octo_cpu_freq);
void octo_set_cpu_freq();
};
@ -59,7 +62,7 @@ public:
Presto/Octo
******************************************************************************/
// MCU ports
// MCU ports/generic
WRITE8_MEMBER(novagmcs48_state::presto_mux_w)
{
@ -87,6 +90,18 @@ READ8_MEMBER(novagmcs48_state::presto_input_r)
return ~read_inputs(9) & 0xff;
}
void novagmcs48_state::octo_set_cpu_freq()
{
// Octo was released with either 12MHz or 15MHz CPU
m_maincpu->set_unscaled_clock((ioport("FAKE")->read() & 1) ? (15000000) : (12000000));
}
MACHINE_RESET_MEMBER(novagmcs48_state, octo)
{
novagbase_state::machine_reset();
octo_set_cpu_freq();
}
/******************************************************************************
@ -122,6 +137,20 @@ static INPUT_PORTS_START( presto )
PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_8) PORT_NAME("Go")
INPUT_PORTS_END
static INPUT_PORTS_START( octo )
PORT_INCLUDE( presto )
PORT_START("FAKE")
PORT_CONFNAME( 0x01, 0x00, "CPU Frequency" ) PORT_CHANGED_MEMBER(DEVICE_SELF, novagmcs48_state, octo_cpu_freq, nullptr) // factory set
PORT_CONFSETTING( 0x00, "12MHz" )
PORT_CONFSETTING( 0x01, "15MHz" )
INPUT_PORTS_END
INPUT_CHANGED_MEMBER(novagmcs48_state::octo_cpu_freq)
{
octo_set_cpu_freq();
}
/******************************************************************************
@ -148,7 +177,9 @@ static MACHINE_CONFIG_DERIVED( octo, presto )
/* basic machine hardware */
MCFG_CPU_MODIFY("maincpu")
MCFG_DEVICE_CLOCK(12000000) // LC circuit, measured
MCFG_DEVICE_CLOCK(12000000) // LC circuit, measured, see octo_set_cpu_freq
MCFG_MACHINE_RESET_OVERRIDE(novagmcs48_state, octo)
MACHINE_CONFIG_END
@ -175,4 +206,4 @@ ROM_END
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY, FULLNAME, FLAGS */
CONS( 1984, npresto, 0, 0, presto, presto, driver_device, 0, "Novag", "Presto (Novag)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )
CONS( 1987, nocto, npresto, 0, octo, presto, driver_device, 0, "Novag", "Octo (Novag)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )
CONS( 1987, nocto, npresto, 0, octo, octo, driver_device, 0, "Novag", "Octo (Novag)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )