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https://github.com/holub/mame
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mw8080bw: add lagunar to 280zzzap netlist audio, other tweaks
Added Laguna Racer to the 280-ZZZAP netlist audio driver, with conditional changes to the netlist for the circuitry differences between the two games. Adjust some netlist components that apparently changed from the 280-ZZZAP schematic to production machines. Removed the driver's private MC3340 netlist, using the equivalent one in the netlist library instead.
This commit is contained in:
Colin Douglas Howell
parent
1125310173
commit
e87939ac9a
File diff suppressed because it is too large
Load Diff
@ -574,6 +574,7 @@ DEFINE_DEVICE_TYPE(PHANTOM2_AUDIO, phantom2_audio_device, "phantom2_audio", "Mid
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DEFINE_DEVICE_TYPE(INVADERS_AUDIO, invaders_audio_device, "invaders_audio", "Taito Space Invaders Audio")
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DEFINE_DEVICE_TYPE(INVAD2CT_AUDIO, invad2ct_audio_device, "invad2ct_audio", "Midway Space Invaders II Audio")
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DEFINE_DEVICE_TYPE(ZZZAP_AUDIO, zzzap_audio_device, "zzzap_audio", "Midway 280-ZZZAP Audio")
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DEFINE_DEVICE_TYPE(LAGUNAR_AUDIO, lagunar_audio_device, "lagunar_audio", "Midway Laguna Racer Audio")
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/*************************************
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@ -3653,8 +3654,9 @@ static INPUT_PORTS_START(zzzap_audio)
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PORT_ADJUSTER( 50, "Pot: Master Volume" ) NETLIST_ANALOG_PORT_CHANGED("sound_nl", "pot_master_vol")
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INPUT_PORTS_END
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zzzap_audio_device::zzzap_audio_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock) :
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device_t(mconfig, ZZZAP_AUDIO, tag, owner, clock),
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zzzap_common_audio_device::zzzap_common_audio_device(machine_config const &mconfig, device_type type, char const *tag, device_t *owner, u32 clock, void (*netlist)(netlist::nlparse_t &)) :
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device_t(mconfig, type, tag, owner, clock),
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m_netlist(netlist),
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m_pedal_bit0(*this, "sound_nl:pedal_bit0"),
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m_pedal_bit1(*this, "sound_nl:pedal_bit1"),
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m_pedal_bit2(*this, "sound_nl:pedal_bit2"),
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@ -3669,7 +3671,7 @@ zzzap_audio_device::zzzap_audio_device(machine_config const &mconfig, char const
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}
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void zzzap_audio_device::p1_w(u8 data)
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void zzzap_common_audio_device::p1_w(u8 data)
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{
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// **** Output pins from 74174 latch at F5 ****
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@ -3694,7 +3696,7 @@ void zzzap_audio_device::p1_w(u8 data)
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}
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void zzzap_audio_device::p2_w(u8 data)
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void zzzap_common_audio_device::p2_w(u8 data)
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{
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// **** Output pins from 74174 latch at F4 ****
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@ -3724,47 +3726,73 @@ void zzzap_audio_device::p2_w(u8 data)
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}
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void zzzap_audio_device::device_add_mconfig(machine_config &config)
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void zzzap_common_audio_device::device_add_mconfig(machine_config &config)
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{
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SPEAKER(config, "mono").front_center();
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NETLIST_SOUND(config, "sound_nl", 48000)
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.set_source(NETLIST_NAME(280zzzap))
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.add_route(ALL_OUTPUTS, "mono", 1.0);
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if (m_netlist != nullptr) {
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NETLIST_LOGIC_INPUT(config, "sound_nl:pedal_bit0", "I_PEDAL_BIT0", 0);
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NETLIST_LOGIC_INPUT(config, "sound_nl:pedal_bit1", "I_PEDAL_BIT1", 0);
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NETLIST_LOGIC_INPUT(config, "sound_nl:pedal_bit2", "I_PEDAL_BIT2", 0);
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NETLIST_LOGIC_INPUT(config, "sound_nl:pedal_bit3", "I_PEDAL_BIT3", 0);
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NETLIST_LOGIC_INPUT(config, "sound_nl:hi_shift", "I_HI_SHIFT", 0);
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NETLIST_LOGIC_INPUT(config, "sound_nl:lo_shift", "I_LO_SHIFT", 0);
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NETLIST_LOGIC_INPUT(config, "sound_nl:boom", "I_BOOM", 0);
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NETLIST_LOGIC_INPUT(config, "sound_nl:engine_sound_off", "I_ENGINE_SOUND_OFF", 0);
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NETLIST_LOGIC_INPUT(config, "sound_nl:noise_cr_1", "I_NOISE_CR_1", 0);
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NETLIST_LOGIC_INPUT(config, "sound_nl:noise_cr_2", "I_NOISE_CR_2", 0);
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NETLIST_SOUND(config, "sound_nl", 48000)
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.set_source(m_netlist)
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.add_route(ALL_OUTPUTS, "mono", 1.0);
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// The audio output is taken from an LM3900 op-amp whose output has a
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// peak-to-peak range of about 5 volts, centered on 2.5 volts. With
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// the master volume potentiometer at its default midpoint setting,
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// this range is cut in half, to 2.5 volts peak to peak. In the real
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// machine, the audio power amps might clip the highest output peaks,
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// but I don't model this. Instead, I take the easy way out: assume
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// the output at midpoint volume will just avoid clipping the extreme
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// peaks, and scale and offset it so that those peaks will just reach
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// the clipping limits for signed 16-bit samples. So turning the
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// volume up much higher than the default will give clipped output.
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NETLIST_STREAM_OUTPUT(config, "sound_nl:cout0", 0, "OUTPUT").set_mult_offset(32767.0 / 1.25, -(32767.0 / 1.25) * 2.50);
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NETLIST_LOGIC_INPUT(config, "sound_nl:pedal_bit0",
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"I_PEDAL_BIT0", 0);
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NETLIST_LOGIC_INPUT(config, "sound_nl:pedal_bit1",
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"I_PEDAL_BIT1", 0);
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NETLIST_LOGIC_INPUT(config, "sound_nl:pedal_bit2",
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"I_PEDAL_BIT2", 0);
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NETLIST_LOGIC_INPUT(config, "sound_nl:pedal_bit3",
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"I_PEDAL_BIT3", 0);
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NETLIST_LOGIC_INPUT(config, "sound_nl:hi_shift",
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"I_HI_SHIFT", 0);
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NETLIST_LOGIC_INPUT(config, "sound_nl:lo_shift",
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"I_LO_SHIFT", 0);
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NETLIST_LOGIC_INPUT(config, "sound_nl:boom", "I_BOOM", 0);
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NETLIST_LOGIC_INPUT(config, "sound_nl:engine_sound_off",
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"I_ENGINE_SOUND_OFF", 0);
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NETLIST_LOGIC_INPUT(config, "sound_nl:noise_cr_1",
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"I_NOISE_CR_1", 0);
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NETLIST_LOGIC_INPUT(config, "sound_nl:noise_cr_2",
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"I_NOISE_CR_2", 0);
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// Netlist volume-potentiometer interface
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NETLIST_ANALOG_INPUT(config, "sound_nl:pot_master_vol", "R70.DIAL");
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// The audio output is taken from an LM3900 op-amp whose
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// output has a peak-to-peak range of about 5 volts, centered
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// on 2.5 volts. With the master volume potentiometer at its
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// default midpoint setting, this range is cut in half, to 2.5
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// volts peak to peak. In the real machine, the audio power
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// amps might clip the highest output peaks, but I don't model
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// this. Instead, I take the easy way out: assume the output
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// at midpoint volume will just avoid clipping the extreme
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// peaks, and scale and offset it so that those peaks will
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// just reach the clipping limits for signed 16-bit samples.
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// So turning the volume up much higher than the default will
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// give clipped output.
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NETLIST_STREAM_OUTPUT(config, "sound_nl:cout0", 0, "OUTPUT").set_mult_offset(32767.0 / 1.25, -(32767.0 / 1.25) * 2.50);
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// Netlist volume-potentiometer interface
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NETLIST_ANALOG_INPUT(config, "sound_nl:pot_master_vol", "R70.DIAL");
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}
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}
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ioport_constructor zzzap_audio_device::device_input_ports() const
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ioport_constructor zzzap_common_audio_device::device_input_ports() const
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{
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return INPUT_PORTS_NAME(zzzap_audio);
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}
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void zzzap_audio_device::device_start()
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void zzzap_common_audio_device::device_start()
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{
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}
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zzzap_audio_device::zzzap_audio_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock) :
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zzzap_common_audio_device(mconfig, ZZZAP_AUDIO, tag, owner, clock, NETLIST_NAME(280zzzap))
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{
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}
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lagunar_audio_device::lagunar_audio_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock) :
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zzzap_common_audio_device(mconfig, LAGUNAR_AUDIO, tag, owner, clock, NETLIST_NAME(lagunar))
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{
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}
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@ -301,10 +301,10 @@ private:
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};
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class zzzap_audio_device : public device_t
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class zzzap_common_audio_device : public device_t
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{
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public:
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zzzap_audio_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock = 0);
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zzzap_common_audio_device(machine_config const &mconfig, device_type type, char const *tag, device_t *owner, u32 clock, void (*netlist)(netlist::nlparse_t &));
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void p1_w(u8 data);
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void p2_w(u8 data);
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@ -315,6 +315,7 @@ protected:
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virtual void device_start() override;
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private:
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void (*m_netlist)(netlist::nlparse_t &) = nullptr;
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required_device<netlist_mame_logic_input_device> m_pedal_bit0;
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required_device<netlist_mame_logic_input_device> m_pedal_bit1;
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required_device<netlist_mame_logic_input_device> m_pedal_bit2;
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@ -328,6 +329,20 @@ private:
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};
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class zzzap_audio_device : public zzzap_common_audio_device
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{
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public:
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zzzap_audio_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock = 0);
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};
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class lagunar_audio_device : public zzzap_common_audio_device
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{
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public:
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lagunar_audio_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock = 0);
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};
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DECLARE_DEVICE_TYPE(SEAWOLF_AUDIO, seawolf_audio_device)
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DECLARE_DEVICE_TYPE(GUNFIGHT_AUDIO, gunfight_audio_device)
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DECLARE_DEVICE_TYPE(BOOTHILL_AUDIO, boothill_audio_device)
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@ -342,6 +357,7 @@ DECLARE_DEVICE_TYPE(SPCENCTR_AUDIO, spcenctr_audio_device)
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DECLARE_DEVICE_TYPE(PHANTOM2_AUDIO, phantom2_audio_device)
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DECLARE_DEVICE_TYPE(INVADERS_AUDIO, invaders_audio_device)
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DECLARE_DEVICE_TYPE(INVAD2CT_AUDIO, invad2ct_audio_device)
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DECLARE_DEVICE_TYPE(ZZZAP_AUDIO, zzzap_audio_device)
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DECLARE_DEVICE_TYPE(ZZZAP_AUDIO, zzzap_audio_device)
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DECLARE_DEVICE_TYPE(LAGUNAR_AUDIO, lagunar_audio_device)
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#endif // MAME_AUDIO_MW8080BW_H
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@ -4,11 +4,15 @@
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#include "netlist/devices/net_lib.h"
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// This is a netlist description for the sound circuits of Midway's 280-ZZZAP,
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// based on Midway's schematic "280 ZZZAP Game Logic P.C. 0610-00907A". It
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// should also apply to Midway's Laguna Racer with only very minor changes and
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// to Taito/Midway's Super Speed Race with only modest changes, because these
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// games use almost identical sound circuits to 280-ZZZAP.
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// This is a netlist description for the sound circuits of Midway's 280-ZZZAP
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// and Laguna Racer, based on Midway's schematics "280 ZZZAP Game Logic P.C.
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// 0610-00907A", "Laguna Racer Game Logic A084-90700-A622", and "Laguna Racer
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// Game Logic A084-90700-B622". Midway PCB drawings for Laguna Racer and a
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// photo by Andrew Wellburn of a 280-ZZZAP game logic board were also used to
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// help determine correct values for certain components. The netlist should
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// also apply to Taito/Midway's Super Speed Race with only modest changes,
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// because that game uses very similar sound circuits to 280-ZZZAP and Laguna
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// Racer.
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// (Incidentally, the 280-ZZZAP schematic has some notes on changes made to
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// the circuitry during production, a few of which were to audio circuits.
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@ -45,6 +49,20 @@
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// and crashes), and the final mix and amplification of all sounds.
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// When comparing the sound circuitry and components between 280-ZZZAP and
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// Laguna Racer, here are some things to note. There are two different
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// versions of the Laguna Racer game logic board (where the sound circuits
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// reside): A622 and B622. Midway's A622 schematic was clearly copied directly
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// from 280-ZZZAP's--even the letter indicators for change notes in
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// 280-ZZZAP's circuitry remain, though the actual notes were blanked out.
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// B622's schematics show sound circuitry differences from 280-ZZZAP and A622,
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// and these differences are consistent with Midway's PCB drawings for *both*
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// the A622 and B622 games boards. Some of them are also consistent with
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// Wellburn's 280-ZZZAP PCB photo. So it seems that actual 280-ZZZAP boards
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// lie somewhere between the 280-ZZZAP schematic and the B622 Laguna Racer
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// schematic.
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// Include special frontiers within engine sound oscillators whose purpose is
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// to improve solution convergence by reducing the oscillators' inherent
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// numeric instability. Also adjusts values of resistors associated with these
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@ -68,176 +86,48 @@
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#define REMOVE_POST_CRASH_NOISE_GLITCHES 1
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static NETLIST_START(mc3340)
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// Netlists for two different games are defined in this file. These netlists
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// are mostly alike but differ in a few key components. I use Aaron Giles'
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// scheme for combining the two definitions in one file.
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//
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// Initial compilation includes this section.
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//
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// A netlist description of the Motorola MC3340 Electronic Attenuator
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// IC, a voltage-controlled amplifier/attenuator. It amplifies or
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// attenuates an input signal according to the voltage of a second,
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// control signal, with a maximum gain of about 12-13 dB (about a
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// factor of 4 in voltage), and higher control voltages giving greater
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// attenuation, which scales logarithmically.
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#ifndef SOUND_VARIANT
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// The netlist here is based on the circuit schematic given in
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// Motorola's own data books, especially the most recent ones
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// published in the 1990s (e.g. _Motorola Analog/Interface ICs Device
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// Data, Vol. II_ (1996), p. 9-67), which are the only schematics that
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// include resistor values. However, the 1990s schematics are missing
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// one crossover connection which is present in older schematics
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// published in the 1970s (e.g. _Motorola Linear Integrated Circuits_
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// (1979), p. 5-130). This missing connection is clearly an error
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// which has been fixed in this netlist; without it, the circuit won't
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// amplify properly, generating only a very weak output signal.
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// The 1990s schematics also omit a couple of diodes which are present
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// in the 1970s schematics. Both of these diodes have been included
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// here. One raises the minimum control voltage at which signal
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// attenuation starts, so it makes the netlist's profile of
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// attenuation vs. control voltage better match Motorola's charts for
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// the device. The other affects the level of the input "midpoint",
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// and including it makes the engine sound closer to that on real
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// 280-ZZZAP machines.
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//
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// Now include ourselves twice, once for 280-ZZZAP and once for Laguna Racer.
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//
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// The Motorola schematics do not label components, so I've created my
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// own labeling scheme based on numbering components on the schematics
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// from top to bottom, left to right, with resistors also getting
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// their value (expressed European-style to avoid decimal points) as
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// part of the name. The netlist is also listed following the
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// schematics in roughly top-to-bottom, left-to-right order.
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#define VARIANT_280ZZZAP 0
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#define VARIANT_LAGUNAR 1
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// A very simple model is used for the transistors here, based on the
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// generic NPN default but with a larger scale current. Again, this
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// was chosen to better match the netlist's attenuation vs. control
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// voltage profile to that given in Motorola's charts for the device.
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#define SOUND_VARIANT (VARIANT_280ZZZAP)
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#include "nl_280zzzap.cpp"
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// The MC3340 has the same circuit internally as an older Motorola
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// device, the MFC6040, which was replaced by the MC3340 in the
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// mid-1970s. The two chips differ only in packaging. Older arcade
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// games which use the MFC6040 may also benefit from this netlist
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// implementation.
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#undef SOUND_VARIANT
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#define SOUND_VARIANT (VARIANT_LAGUNAR)
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#include "nl_280zzzap.cpp"
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RES(R1_5K1, RES_K(5.1))
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DIODE(D1_MC3340, "D(IS=1e-15 N=1)")
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#else
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RES(R2_4K7, RES_K(4.7))
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NET_MODEL("NPN1 NPN(IS=1E-13 BF=100)")
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QBJT_EB(Q1, "NPN1")
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RES(R3_750, RES_R(750))
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RES(R4_10K, RES_K(10))
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QBJT_EB(Q2, "NPN1")
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RES(R5_750, RES_R(750))
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RES(R6_3K9, RES_K(3.9))
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RES(R7_5K1, RES_K(5.1))
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RES(R8_20K, RES_K(20))
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DIODE(D2_MC3340, "D(IS=1e-15 N=1)")
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RES(R9_510, RES_R(510))
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QBJT_EB(Q3, "NPN1")
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QBJT_EB(Q4, "NPN1")
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QBJT_EB(Q5, "NPN1")
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RES(R10_1K3, RES_K(1.3))
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QBJT_EB(Q6, "NPN1")
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RES(R11_5K1, RES_K(5.1))
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QBJT_EB(Q7, "NPN1")
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QBJT_EB(Q8, "NPN1")
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RES(R12_1K5, RES_K(1.5))
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RES(R13_6K2, RES_K(6.2))
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QBJT_EB(Q9, "NPN1")
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RES(R14_5K1, RES_K(5.1))
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QBJT_EB(Q10, "NPN1")
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RES(R15_5K1, RES_K(5.1))
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RES(R16_200, RES_R(200))
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RES(R17_5K1, RES_K(5.1))
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DIODE(D3_MC3340, "D(IS=1e-15 N=1)")
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RES(R18_510, RES_R(510))
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ALIAS(MC3340_VCC, R1_5K1.1)
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NET_C(R1_5K1.1, Q1.C, Q2.C, R7_5K1.1, Q3.C, Q4.C, Q7.C,
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R13_6K2.1, Q10.C, R17_5K1.1)
|
||||
// Location of first diode present on 1970s schematics but omitted on
|
||||
// 1990s ones. Including it raises the control voltage threshold for
|
||||
// attenuation significantly.
|
||||
NET_C(R1_5K1.2, D1_MC3340.A, Q1.B)
|
||||
NET_C(D1_MC3340.K, R2_4K7.1)
|
||||
NET_C(R2_4K7.2, GND)
|
||||
|
||||
NET_C(Q1.E, R3_750.1, R5_750.1)
|
||||
NET_C(R3_750.2, R4_10K.1, Q2.B)
|
||||
NET_C(R4_10K.2, GND)
|
||||
|
||||
NET_C(R5_750.2, R6_3K9.1, Q3.B)
|
||||
ALIAS(MC3340_CONTROL, R6_3K9.2)
|
||||
|
||||
ALIAS(MC3340_INPUT, Q5.B)
|
||||
|
||||
NET_C(MC3340_INPUT, R8_20K.1)
|
||||
// Location of second diode present on 1970s schematics but omitted on
|
||||
// 1990s ones. Including it is critical to making the tone of the
|
||||
// output engine sound match that of real 280-ZZZAP machines.
|
||||
NET_C(R7_5K1.2, R8_20K.2, D2_MC3340.A)
|
||||
NET_C(D2_MC3340.K, R9_510.1)
|
||||
NET_C(R9_510.2, GND)
|
||||
|
||||
NET_C(Q4.E, Q6.E, Q5.C)
|
||||
NET_C(Q5.E, R10_1K3.1)
|
||||
NET_C(R10_1K3.2, GND)
|
||||
|
||||
NET_C(Q6.B, Q7.B, Q2.E, R11_5K1.1)
|
||||
NET_C(R11_5K1.2, GND)
|
||||
|
||||
NET_C(Q7.E, Q9.E, Q8.C)
|
||||
NET_C(Q8.E, R12_1K5.1)
|
||||
NET_C(R12_1K5.2, GND)
|
||||
|
||||
NET_C(Q4.B, Q9.B, Q3.E, R14_5K1.1)
|
||||
NET_C(R14_5K1.2, GND)
|
||||
|
||||
// This is where the cross-connection is erroneously omitted from
|
||||
// 1990s schematics.
|
||||
NET_C(Q6.C, R13_6K2.2, Q9.C, Q10.B)
|
||||
|
||||
// Connection for external frequency compensation capacitor; unused
|
||||
// here.
|
||||
ALIAS(MC3340_ROLLOFF, Q10.B)
|
||||
|
||||
NET_C(Q10.E, R16_200.1, R15_5K1.1)
|
||||
NET_C(R15_5K1.2, GND)
|
||||
ALIAS(MC3340_OUTPUT, R16_200.2)
|
||||
|
||||
NET_C(R17_5K1.2, D3_MC3340.A, Q8.B)
|
||||
NET_C(D3_MC3340.K, R18_510.1)
|
||||
NET_C(R18_510.2, GND)
|
||||
|
||||
NETLIST_END()
|
||||
//
|
||||
// Main netlist
|
||||
//
|
||||
|
||||
#if (SOUND_VARIANT == VARIANT_280ZZZAP)
|
||||
|
||||
static NETLIST_START(280zzzap_schematics)
|
||||
|
||||
#else // (SOUND_VARIANT == VARIANT_LAGUNAR)
|
||||
|
||||
static NETLIST_START(lagunar_schematics)
|
||||
|
||||
#endif
|
||||
|
||||
// **** Conversion of accelerator level to "engine speed" control
|
||||
// **** voltage for engine sound, with capacitor-based "engine
|
||||
// **** inertia" and gear shift changes.
|
||||
@ -300,15 +190,19 @@ static NETLIST_START(280zzzap_schematics)
|
||||
RES(R62, RES_K(1))
|
||||
RES(R61, RES_K(1))
|
||||
|
||||
// The 480 Kohm resistors listed here are shown as such on the
|
||||
// 280-ZZZAP schematic and the schematic for the earlier Laguna Racer
|
||||
// board, but this is a non-standard value. The nearest standard value
|
||||
// is 470 Kohm, and this may have been used in production. Need to
|
||||
// check against actual PCBs.
|
||||
RES(R51, RES_K(480)) // 470 Kohm in later Laguna and Super Speed Race
|
||||
RES(R46, RES_M(2)) // 2.2 Mohm in later Laguna and Super Speed Race
|
||||
// For the following resistors R51 and R46-R49, the values given are
|
||||
// those shown in the Laguna Racer PCB drawings, the Laguna Racer B622
|
||||
// board schematic, the Super Speed Race schematic, and Andrew
|
||||
// Wellburn's 280-ZZZAP PCB photo. In the 280-ZZZAP schematic (and the
|
||||
// Laguna Racer A622 board schematic, a near copy), R51 and R48 are
|
||||
// 480 Kohms and R46 is 2 Mohms, but these seem to be errors in that
|
||||
// schematic. 480 Kohm is not even a standard resistor value for any
|
||||
// tolerance band, so it could not have been used on production
|
||||
// boards.
|
||||
RES(R51, RES_K(470))
|
||||
RES(R46, RES_M(2.2))
|
||||
RES(R47, RES_M(1))
|
||||
RES(R48, RES_K(480)) // 470 Kohm in later Laguna and Super Speed Race
|
||||
RES(R48, RES_K(470))
|
||||
RES(R49, RES_K(240))
|
||||
|
||||
RES(R50, RES_K(100))
|
||||
@ -326,7 +220,19 @@ static NETLIST_START(280zzzap_schematics)
|
||||
RES(R59, RES_K(560))
|
||||
RES(R60, RES_K(10))
|
||||
|
||||
CAP(C18, CAP_U(47)) // 22 uF in later Laguna and Super Speed Race
|
||||
// The size of capacitor C18 varies with the game: 47 uF in 280-ZZZAP,
|
||||
// 22 uF in Laguna Racer and Super Speed Race:
|
||||
|
||||
#if (SOUND_VARIANT == VARIANT_280ZZZAP)
|
||||
|
||||
CAP(C18, CAP_U(47))
|
||||
|
||||
#else // (SOUND_VARIANT == VARIANT_LAGUNAR)
|
||||
|
||||
CAP(C18, CAP_U(22))
|
||||
|
||||
#endif
|
||||
|
||||
NET_C(C18.2, GND)
|
||||
|
||||
CAP(C19, CAP_U(2.2))
|
||||
@ -416,6 +322,8 @@ static NETLIST_START(280zzzap_schematics)
|
||||
// These are the remaining connections from H5_4.OUT:
|
||||
NET_C(H5_4.OUT, R36.1, R37.1, R31.1, R32.1, R29.1, R30.1)
|
||||
|
||||
MC3340_DIP(MC3340_H2)
|
||||
|
||||
CD4016_DIP(J4)
|
||||
|
||||
// First oscillator (bottommost in schematics).
|
||||
@ -503,26 +411,60 @@ static NETLIST_START(280zzzap_schematics)
|
||||
NET_C(J3_4.OUT, R35.1, J4.5)
|
||||
NET_C(I_V5.Q, R34.1)
|
||||
NET_C(J3_4.PLUS, R34.2, R35.2)
|
||||
NET_C(C16.2, MC3340_INPUT) // to MC3340 H2 pin 1
|
||||
NET_C(C16.2, MC3340_H2.1) // to MC3340 input pin
|
||||
|
||||
// Third oscillator (topmost in schematics).
|
||||
// This is the amplitude-modulation oscillator.
|
||||
// Schematic shows frequency of "428 Hz", but when modeled without a
|
||||
// frontier, the maximum in low gear is 465 Hz.
|
||||
// With a frontier, uncompensated, this decreases to 442 Hz.
|
||||
|
||||
// This is the amplitude-modulation oscillator, whose frequency
|
||||
// differs slightly between 280-ZZZAP and the later games, Laguna
|
||||
// Racer and Super Speed Race. This difference distinctly changes the
|
||||
// tone of the engine sound.
|
||||
// The 280-ZZZAP and Laguna Racer schematics all show a frequency of
|
||||
// "428 Hz", but for 280-ZZZAP, when equipped with a 110 Kohm resistor
|
||||
// and modeled without a frontier, the maximum in low gear is 465 Hz;
|
||||
// with a frontier, uncompensated, this decreases to 442 Hz.
|
||||
// For Laguna Racer, when equipped with a 100 Kohm resistor and
|
||||
// modeled without a frontier, the maximum low gear frequency is 511
|
||||
// Hz; with a frontier, uncompensated, it's 482 Hz.
|
||||
|
||||
LM3900(J3_2)
|
||||
LM3900(J3_1)
|
||||
|
||||
RES(R29, RES_K(220))
|
||||
RES(R30, RES_K(110)) // 100 Kohm in later Laguna and Super Speed Race
|
||||
|
||||
// The value of resistor R30 is what changes the engine sound between
|
||||
// 280-ZZZAP and the later games. The 280-ZZZAP schematic indicates
|
||||
// that it is 110 Kohm in that game. This resistor is hidden on Andrew
|
||||
// Wellburn's 280-ZZZAP PCB photo, but the sound resulting from 110
|
||||
// Kohm is more consistent with actual 280-ZZZAP machines than that
|
||||
// from 100 Kohm.
|
||||
// The resistor is 100 Kohm in the B622 Laguna Racer and Super Speed
|
||||
// Race schematics and on the PCB drawings for both Laguna Racer board
|
||||
// versions, so I assume all Laguna Racer versions had this value.
|
||||
#if (SOUND_VARIANT == VARIANT_280ZZZAP)
|
||||
|
||||
RES(R30, RES_K(110))
|
||||
|
||||
#else // (SOUND_VARIANT == VARIANT_LAGUNAR)
|
||||
|
||||
RES(R30, RES_K(100))
|
||||
|
||||
#endif
|
||||
|
||||
RES(R28, RES_K(100))
|
||||
|
||||
#if CONVERGENCE_FRONTIERS
|
||||
// Schmitt trigger resistors changed to compensate for waveform changes
|
||||
// from use of frontier:
|
||||
// from use of frontier.
|
||||
// Since the different games have different oscillator frequencies,
|
||||
// the compensated values of these resistors differ slightly as well.
|
||||
#if (SOUND_VARIANT == VARIANT_280ZZZAP)
|
||||
RES(R26, RES_K(455))
|
||||
RES(R27, RES_K(284))
|
||||
#else // (SOUND_VARIANT == VARIANT_LAGUNAR)
|
||||
RES(R26, RES_K(453))
|
||||
RES(R27, RES_K(286))
|
||||
#endif
|
||||
#else
|
||||
RES(R26, RES_K(470))
|
||||
RES(R27, RES_K(270))
|
||||
@ -553,7 +495,7 @@ static NETLIST_START(280zzzap_schematics)
|
||||
NET_C(J3_1.OUT, R27.1, J4.13)
|
||||
NET_C(I_V5.Q, R26.1)
|
||||
NET_C(J3_1.PLUS, R26.2, R27.2)
|
||||
NET_C(D1.K, R23.2, C13.2, R25.1, MC3340_CONTROL) // to MC3340 H2 pin 2
|
||||
NET_C(D1.K, R23.2, C13.2, R25.1, MC3340_H2.2) // to MC3340 ctrl pin
|
||||
|
||||
// The MC3340's output is the complete engine sound, which is sent to
|
||||
// the final mix.
|
||||
@ -738,10 +680,8 @@ static NETLIST_START(280zzzap_schematics)
|
||||
|
||||
// The result is a high-pitched "tire skid" screeching sound.
|
||||
|
||||
// The circuit appears to be taken almost verbatim from page 19 of
|
||||
// National Semiconductor's Application Note 72 about the LM3900, with
|
||||
// only minor changes in the values of a few components to alter the
|
||||
// DC bias.
|
||||
// The circuit appears to be taken practically verbatim from page 19 of
|
||||
// National Semiconductor's Application Note 72 about the LM3900.
|
||||
|
||||
CD4016_DIP(G4)
|
||||
|
||||
@ -768,9 +708,17 @@ static NETLIST_START(280zzzap_schematics)
|
||||
|
||||
LM3900(H4_4)
|
||||
|
||||
// For resistor R11, the value given is that shown in the Laguna Racer
|
||||
// PCB drawings, the Laguna Racer B622 board schematic, the Super
|
||||
// Speed Race schematic, and Andrew Wellburn's 280-ZZZAP PCB photo. In
|
||||
// the 280-ZZZAP schematic and the near-copy Laguna Racer A622 board
|
||||
// schematic, R11 is 100 Kohms, but this seems to be a schematic
|
||||
// error. (The original National Semiconductor Application Note 72
|
||||
// from which this circuit was apparently taken also uses 120 Kohm for
|
||||
// R11.)
|
||||
RES(R9, RES_K(39))
|
||||
RES(R10, RES_K(62)) // 240 Kohm in Super Speed Race
|
||||
RES(R11, RES_K(100)) // 120 Kohm in later Laguna and Super Speed Race
|
||||
RES(R11, RES_K(120))
|
||||
RES(R12, RES_K(62))
|
||||
|
||||
NET_C(H4_4.MINUS, R9.2, R11.1)
|
||||
@ -851,12 +799,16 @@ static NETLIST_START(280zzzap_schematics)
|
||||
|
||||
LM3900(H5_1)
|
||||
|
||||
// On the 280-ZZZAP game logic board schematic, resistor R18 (which is
|
||||
// not labeled as such) is a 2.2K resistor, but it has a note "E"
|
||||
// stating that one of the changes made after the first 325 units was:
|
||||
// "2.2K resistor at G4 pin 2 was 6.8K." I interpret this to mean that
|
||||
// the resistor was lowered to 2.2K from 6.8K.
|
||||
// Resistor R18, part of the BOOM filter, is 2.2 Kohms on the
|
||||
// 280-ZZZAP schematic as well as in Laguna Racer, but the 280-ZZZAP
|
||||
// schematic has a note "E" saying that the first 325 machines had a
|
||||
// 6.8 Kohm resistor here instead. Andrew Wellburn's 280-ZZZAP board
|
||||
// photo may show such a resistor. With this larger resistor, the
|
||||
// filter's values are: center frequency 54 Hz, Q 16.9, gain 73.5; so
|
||||
// the filter is slightly broader, pitched a bit lower, and has only a
|
||||
// third as much gain. Still, the basic effect is the same.
|
||||
RES(R18, RES_K(2.2)) // 20 Kohm in Super Speed Race
|
||||
|
||||
RES(R19, RES_K(1))
|
||||
RES(R20, RES_M(3.3))
|
||||
RES(R21, RES_M(1)) // 1.5 Mohm in Super Speed Race
|
||||
@ -907,20 +859,27 @@ static NETLIST_START(280zzzap_schematics)
|
||||
|
||||
RES(R63, RES_K(12)) // 3 Kohm in Super Speed Race
|
||||
RES(R64, RES_K(150))
|
||||
// On the 280-ZZZAP game logic board schematic, resistor R65 (which is
|
||||
// not labeled as such) is a 12K resistor, but it has a note "F"
|
||||
// stating that one of the changes made after the first 325 units was:
|
||||
// "12K resistor in series with 10MF cap and J5 pin 8 was 4.3K." I
|
||||
// interpret this to mean that the resistor was raised to 12K from
|
||||
// 4.3K.
|
||||
|
||||
// Resistor R65, the mixing resistor for the BOOM effect, is 12 Kohms
|
||||
// on the 280-ZZZAP schematic and in Laguna Racer and Super Speed
|
||||
// Race, but the 280-ZZZAP schematic has a note "F" saying that the
|
||||
// first 325 machines had a 4.3 Kohm resistor here instead. Andrew
|
||||
// Wellburn's 280-ZZZAP board photo shows such a resistor. The lower
|
||||
// resistor makes the BOOM effect much louder, countering the reduced
|
||||
// gain on its generating filter described above. In fact, it makes it
|
||||
// loud enough to be clipped by the post-mixer op-amps; turning down
|
||||
// the volume to prevent this clipping makes all other sounds quieter
|
||||
// by comparison. This may explain why both the mixing resistor and
|
||||
// the filter resistor were changed in later machines.
|
||||
RES(R65, RES_K(12))
|
||||
|
||||
RES(R66, RES_K(33))
|
||||
|
||||
CAP(C20, CAP_U(10))
|
||||
CAP(C21, CAP_U(10))
|
||||
|
||||
NET_C(R63.2, R64.2, R65.2, C20.1)
|
||||
NET_C(MC3340_OUTPUT, R66.1)
|
||||
NET_C(MC3340_H2.7, R66.1) // MC3340 output pin
|
||||
NET_C(R66.2, C21.1)
|
||||
|
||||
LM3900(J5_3)
|
||||
@ -956,8 +915,16 @@ static NETLIST_START(280zzzap_schematics)
|
||||
NETLIST_END()
|
||||
|
||||
|
||||
#if (SOUND_VARIANT == VARIANT_280ZZZAP)
|
||||
|
||||
NETLIST_START(280zzzap)
|
||||
|
||||
#else // (SOUND_VARIANT == VARIANT_LAGUNAR)
|
||||
|
||||
NETLIST_START(lagunar)
|
||||
|
||||
#endif
|
||||
|
||||
SOLVER(Solver, 48000)
|
||||
|
||||
#if !(FAST_HLE_NOISE_GEN)
|
||||
@ -981,16 +948,23 @@ NETLIST_START(280zzzap)
|
||||
ANALOG_INPUT(I_V12, 12)
|
||||
ANALOG_INPUT(I_V5, 5)
|
||||
|
||||
LOCAL_SOURCE(mc3340)
|
||||
INCLUDE(mc3340)
|
||||
|
||||
// The MC3340 gets 12-volt power in 280-ZZZAP and Laguna Racer.
|
||||
// In Super Speed Race it gets 5-volt power.
|
||||
NET_C(I_V12.Q, MC3340_VCC)
|
||||
#if (SOUND_VARIANT == VARIANT_280ZZZAP)
|
||||
|
||||
LOCAL_SOURCE(280zzzap_schematics)
|
||||
INCLUDE(280zzzap_schematics)
|
||||
|
||||
#else // (SOUND_VARIANT == VARIANT_LAGUNAR)
|
||||
|
||||
LOCAL_SOURCE(lagunar_schematics)
|
||||
INCLUDE(lagunar_schematics)
|
||||
|
||||
#endif
|
||||
|
||||
// The MC3340 gets 12-volt power in 280-ZZZAP and Laguna Racer.
|
||||
// In Super Speed Race it gets 5-volt power.
|
||||
NET_C(I_V12.Q, MC3340_H2.8)
|
||||
NET_C(GND, MC3340_H2.3)
|
||||
|
||||
// Logic inputs which represent output pins from 74174 latches at F4
|
||||
// and F5
|
||||
LOGIC_INPUT(I_F4_2, 0, "74XX") // BOOM
|
||||
@ -1092,7 +1066,11 @@ NETLIST_START(280zzzap)
|
||||
OPTIMIZE_FRONTIER(R31.1, RES_K(300), 50)
|
||||
OPTIMIZE_FRONTIER(R32.1, RES_K(150), 50)
|
||||
OPTIMIZE_FRONTIER(R29.1, RES_K(220), 50)
|
||||
#if (SOUND_VARIANT == VARIANT_280ZZZAP)
|
||||
OPTIMIZE_FRONTIER(R30.1, RES_K(110), 50)
|
||||
#else // (SOUND_VARIANT == VARIANT_LAGUNAR)
|
||||
OPTIMIZE_FRONTIER(R30.1, RES_K(100), 50)
|
||||
#endif
|
||||
|
||||
#if CONVERGENCE_FRONTIERS
|
||||
// Frontiers at Schmitt trigger op-amp outputs of engine sound
|
||||
@ -1102,7 +1080,14 @@ NETLIST_START(280zzzap)
|
||||
// otherwise change the oscillator waveforms.
|
||||
OPTIMIZE_FRONTIER(R40.1, RES_K(275), 50)
|
||||
OPTIMIZE_FRONTIER(R35.1, RES_K(281), 50)
|
||||
#if (SOUND_VARIANT == VARIANT_280ZZZAP)
|
||||
OPTIMIZE_FRONTIER(R27.1, RES_K(284), 50)
|
||||
#else // (SOUND_VARIANT == VARIANT_LAGUNAR)
|
||||
OPTIMIZE_FRONTIER(R27.1, RES_K(286), 50)
|
||||
#endif
|
||||
#endif
|
||||
|
||||
NETLIST_END()
|
||||
|
||||
|
||||
#endif
|
||||
|
||||
@ -8,5 +8,6 @@
|
||||
#include "netlist/nl_setup.h"
|
||||
|
||||
NETLIST_EXTERNAL(280zzzap)
|
||||
NETLIST_EXTERNAL(lagunar)
|
||||
|
||||
#endif // MAME_AUDIO_NL_280ZZZAP_H
|
||||
|
||||
@ -747,10 +747,10 @@ void zzzap_state::io_map(address_map &map)
|
||||
map(0x02, 0x02).mirror(0x04).portr("IN2");
|
||||
map(0x03, 0x03).mirror(0x04).r(m_mb14241, FUNC(mb14241_device::shift_result_r));
|
||||
|
||||
map(0x02, 0x02).w("soundboard", FUNC(zzzap_audio_device::p1_w));
|
||||
map(0x02, 0x02).w("soundboard", FUNC(zzzap_common_audio_device::p1_w));
|
||||
map(0x03, 0x03).w(m_mb14241, FUNC(mb14241_device::shift_data_w));
|
||||
map(0x04, 0x04).w(m_mb14241, FUNC(mb14241_device::shift_count_w));
|
||||
map(0x05, 0x05).w("soundboard", FUNC(zzzap_audio_device::p2_w));
|
||||
map(0x05, 0x05).w("soundboard", FUNC(zzzap_common_audio_device::p2_w));
|
||||
map(0x07, 0x07).w(m_watchdog, FUNC(watchdog_timer_device::reset_w));
|
||||
}
|
||||
|
||||
@ -824,7 +824,7 @@ static INPUT_PORTS_START( lagunar )
|
||||
INPUT_PORTS_END
|
||||
|
||||
|
||||
void zzzap_state::zzzap(machine_config &config)
|
||||
void zzzap_state::zzzap_common(machine_config &config)
|
||||
{
|
||||
mw8080bw_root(config);
|
||||
|
||||
@ -836,11 +836,28 @@ void zzzap_state::zzzap(machine_config &config)
|
||||
/* add shifter */
|
||||
MB14241(config, m_mb14241);
|
||||
|
||||
/* audio hardware handled by specific machine */
|
||||
}
|
||||
|
||||
|
||||
void zzzap_state::zzzap(machine_config &config)
|
||||
{
|
||||
zzzap_common(config);
|
||||
|
||||
/* audio hardware */
|
||||
ZZZAP_AUDIO(config, "soundboard");
|
||||
}
|
||||
|
||||
|
||||
void zzzap_state::lagunar(machine_config &config)
|
||||
{
|
||||
zzzap_common(config);
|
||||
|
||||
/* audio hardware */
|
||||
LAGUNAR_AUDIO(config, "soundboard");
|
||||
}
|
||||
|
||||
|
||||
|
||||
/*************************************
|
||||
*
|
||||
@ -3094,14 +3111,14 @@ ROM_END
|
||||
/* 597 */ GAMEL( 1975, gunfighto, gunfight, gunfight, gunfight, gunfight_state, empty_init, ROT0, "Dave Nutting Associates / Midway", "Gun Fight (set 2)", MACHINE_SUPPORTS_SAVE, layout_gunfight )
|
||||
/* 604 Gun Fight (cocktail, dump does not exist) */
|
||||
/* 605 */ GAME( 1976, tornbase, 0, tornbase, tornbase, mw8080bw_state, empty_init, ROT0, "Dave Nutting Associates / Midway / Taito", "Tornado Baseball / Ball Park", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
|
||||
/* 610 */ GAMEL( 1976, 280zzzap, 0, zzzap, zzzap, zzzap_state, empty_init, ROT0, "Dave Nutting Associates / Midway", "280-ZZZAP", MACHINE_SUPPORTS_SAVE, layout_280zzzap )
|
||||
/* 610 */ GAMEL( 1976, 280zzzap, 0, zzzap, zzzap, zzzap_state, empty_init, ROT0, "Dave Nutting Associates / Midway", "280-ZZZAP", MACHINE_SUPPORTS_SAVE, layout_280zzzap )
|
||||
/* 611 */ GAMEL( 1976, maze, 0, maze, maze, mw8080bw_state, empty_init, ROT0, "Midway", "Amazing Maze", MACHINE_SUPPORTS_SAVE, layout_maze )
|
||||
/* 612 */ GAME( 1977, boothill, 0, boothill, boothill, boothill_state, empty_init, ROT0, "Dave Nutting Associates / Midway", "Boot Hill", MACHINE_SUPPORTS_SAVE )
|
||||
/* 615 */ GAME( 1977, checkmat, 0, checkmat, checkmat, mw8080bw_state, empty_init, ROT0, "Dave Nutting Associates / Midway", "Checkmate", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
|
||||
/* 618 */ GAME( 1977, desertgu, 0, desertgu, desertgu, desertgu_state, empty_init, ROT0, "Dave Nutting Associates / Midway", "Desert Gun", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
|
||||
/* 618 */ GAME( 1977, roadrunm, desertgu, desertgu, desertgu, desertgu_state, empty_init, ROT0, "Midway", "Road Runner (Midway)", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
|
||||
/* 619 */ GAME( 1977, dplay, 0, dplay, dplay, dplay_state, empty_init, ROT0, "Midway", "Double Play", MACHINE_SUPPORTS_SAVE )
|
||||
/* 622 */ GAMEL( 1977, lagunar, 0, zzzap, lagunar, zzzap_state, empty_init, ROT90, "Midway", "Laguna Racer", MACHINE_NO_SOUND | MACHINE_SUPPORTS_SAVE, layout_lagunar )
|
||||
/* 622 */ GAMEL( 1977, lagunar, 0, lagunar, lagunar, zzzap_state, empty_init, ROT90, "Midway", "Laguna Racer", MACHINE_SUPPORTS_SAVE, layout_lagunar )
|
||||
/* 623 */ GAME( 1977, gmissile, 0, gmissile, gmissile, boothill_state, empty_init, ROT0, "Midway", "Guided Missile", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
|
||||
/* 626 */ GAME( 1977, m4, 0, m4, m4, boothill_state, empty_init, ROT0, "Midway", "M-4", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
|
||||
/* 630 */ GAMEL( 1978, clowns, 0, clowns, clowns, clowns_state, empty_init, ROT0, "Midway", "Clowns (rev. 2)", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE, layout_clowns )
|
||||
|
||||
@ -385,6 +385,11 @@ public:
|
||||
|
||||
void zzzap(machine_config &config);
|
||||
|
||||
void lagunar(machine_config &config);
|
||||
|
||||
protected:
|
||||
void zzzap_common(machine_config &config);
|
||||
|
||||
private:
|
||||
void io_map(address_map &map);
|
||||
};
|
||||
|
||||
@ -318,6 +318,7 @@ masao // bootleg
|
||||
gunfight // 597 [1975] Dave Nutting Associates / Midway
|
||||
gunfighto // 597 [1975] Dave Nutting Associates / Midway
|
||||
280zzzap // 610 [1976] Dave Nutting Associates / Midway
|
||||
lagunar // 622 [1977] Midway
|
||||
|
||||
@source:palestra.cpp
|
||||
palestra
|
||||
|
||||
Loading…
Reference in New Issue
Block a user