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amstrad: add Ram Electronics Music Machine MIDI and sampler expansion. [Barry Rodewald]

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This commit is contained in:
mahlemiut 2019-08-16 14:42:48 +12:00
parent 5ca8e228fd
commit daa3de1f6a
5 changed files with 189 additions and 0 deletions
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2
scripts/src/bus.lua
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@ -3130,6 +3130,8 @@ if (BUSES["CPC"]~=null) then
MAME_DIR .. "src/devices/bus/cpc/doubler.h",
MAME_DIR .. "src/devices/bus/cpc/transtape.cpp",
MAME_DIR .. "src/devices/bus/cpc/transtape.h",
MAME_DIR .. "src/devices/bus/cpc/musicmachine.cpp",
MAME_DIR .. "src/devices/bus/cpc/musicmachine.h",
}
end

128
src/devices/bus/cpc/musicmachine.cpp Normal file
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@ -0,0 +1,128 @@
// license:BSD-3-Clause
// copyright-holders:Barry Rodewald
/*
* The Music Machine - MIDI and sampling expansion
* by Ram Electronics
*/
#include "emu.h"
#include "musicmachine.h"
#include "sound/volt_reg.h"
#include "bus/midi/midi.h"
#include "machine/clock.h"
#include "speaker.h"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
DEFINE_DEVICE_TYPE(CPC_MUSICMACHINE, cpc_musicmachine_device, "cpcmusic", "The Music Machine")
void cpc_musicmachine_device::device_add_mconfig(machine_config &config)
{
ACIA6850(config, m_acia).txd_handler().set("mdout", FUNC(midi_port_device::write_txd));
m_acia->irq_handler().set(DEVICE_SELF_OWNER, FUNC(cpc_expansion_slot_device::nmi_w));
MIDI_PORT(config, "mdin", midiin_slot, "midiin").rxd_handler().set(m_acia, FUNC(acia6850_device::write_rxd));
MIDI_PORT(config, "mdout", midiout_slot, "midiout");
clock_device &acia_clock(CLOCK(config, "acia_clock", 31250*16));
acia_clock.signal_handler().set(FUNC(cpc_musicmachine_device::write_acia_clock));
SPEAKER(config, "speaker").front_center();
ZN429E(config, m_dac, 0).add_route(ALL_OUTPUTS, "speaker", 0.2);
voltage_regulator_device &vref(VOLTAGE_REGULATOR(config, "vref"));
vref.add_route(0, "dac", 1.0, DAC_VREF_POS_INPUT);
vref.add_route(0, "dac", -1.0, DAC_VREF_NEG_INPUT);
// no pass-through
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
cpc_musicmachine_device::cpc_musicmachine_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
device_t(mconfig, CPC_MUSICMACHINE, tag, owner, clock),
device_cpc_expansion_card_interface(mconfig, *this),
m_slot(nullptr),
m_acia(*this,"acia"),
m_dac(*this,"dac"),
m_irq_select(false)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void cpc_musicmachine_device::device_start()
{
m_slot = dynamic_cast<cpc_expansion_slot_device *>(owner());
address_space &space = m_slot->cpu().space(AS_IO);
space.install_write_handler(0xf8e8,0xf8e8,write8_delegate(FUNC(cpc_musicmachine_device::irqsel_w),this));
space.install_readwrite_handler(0xf8ec,0xf8ef,read8_delegate(FUNC(cpc_musicmachine_device::acia_r), this),write8_delegate(FUNC(cpc_musicmachine_device::acia_w),this));
space.install_write_handler(0xf8f0,0xf8f0,write8_delegate(FUNC(cpc_musicmachine_device::dac_w),this));
// 0xf8f4 - ADC read8_delegate
// 0xf8f8 - ADC start
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void cpc_musicmachine_device::device_reset()
{
// TODO
}
WRITE8_MEMBER(cpc_musicmachine_device::dac_w)
{
m_dac->write(data);
}
READ8_MEMBER(cpc_musicmachine_device::acia_r)
{
uint8_t ret = 0;
switch(offset)
{
case 2:
ret = m_acia->status_r();
break;
case 3:
ret = m_acia->data_r();
break;
}
return ret;
}
WRITE8_MEMBER(cpc_musicmachine_device::acia_w)
{
switch(offset)
{
case 0:
m_acia->control_w(data);
break;
case 1:
m_acia->data_w(data);
break;
}
}
WRITE8_MEMBER(cpc_musicmachine_device::irqsel_w)
{
if(data == 0x01)
m_irq_select = true;
else
m_irq_select = false;
}
WRITE_LINE_MEMBER(cpc_musicmachine_device::irq_w)
{
if(m_irq_select)
m_slot->nmi_w(state);
}

54
src/devices/bus/cpc/musicmachine.h Normal file
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@ -0,0 +1,54 @@
// license:BSD-3-Clause
// copyright-holders:Barry Rodewald
/*
* The Music Machine - MIDI and sampling expansion
* by Ram Electronics
*
* Contains a 6850 AICA, Ferranti ZN429E8 DAC and ZN449 ADC
*/
#ifndef MAME_BUS_CPC_MUSICMACHINE_H
#define MAME_BUS_CPC_MUSICMACHINE_H
#pragma once
#include "cpcexp.h"
#include "machine/6850acia.h"
#include "sound/dac.h"
class cpc_musicmachine_device : public device_t,
public device_cpc_expansion_card_interface
{
public:
// construction/destruction
cpc_musicmachine_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
DECLARE_WRITE8_MEMBER(dac_w);
DECLARE_READ8_MEMBER(acia_r);
DECLARE_WRITE8_MEMBER(acia_w);
DECLARE_WRITE8_MEMBER(irqsel_w);
DECLARE_WRITE_LINE_MEMBER(irq_w);
void write_acia_clock(u8 data) { m_acia->write_txc(data); m_acia->write_rxc(data); }
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
// optional information overrides
virtual void device_add_mconfig(machine_config &config) override;
private:
cpc_expansion_slot_device *m_slot;
required_device<acia6850_device> m_acia;
required_device<dac_byte_interface> m_dac;
bool m_irq_select;
};
// device type definition
DECLARE_DEVICE_TYPE(CPC_MUSICMACHINE, cpc_musicmachine_device)
#endif // MAME_BUS_CPC_MUSICMACHINE_H

4
src/mame/drivers/amstrad.cpp
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@ -833,6 +833,7 @@ void cpc464_exp_cards(device_slot_interface &device)
device.option_add("hd20", CPC_HD20);
device.option_add("doubler", CPC_DOUBLER);
device.option_add("transtape", CPC_TRANSTAPE);
device.option_add("musicmachine", CPC_MUSICMACHINE);
}
void cpc_exp_cards(device_slot_interface &device)
@ -852,6 +853,7 @@ void cpc_exp_cards(device_slot_interface &device)
device.option_add("hd20", CPC_HD20);
device.option_add("doubler", CPC_DOUBLER);
device.option_add("transtape", CPC_TRANSTAPE);
device.option_add("musicmachine", CPC_MUSICMACHINE);
}
void cpcplus_exp_cards(device_slot_interface &device)
@ -869,6 +871,7 @@ void cpcplus_exp_cards(device_slot_interface &device)
device.option_add("hd20", CPC_HD20);
device.option_add("doubler", CPC_DOUBLER);
device.option_add("transtape", CPC_TRANSTAPE); // Plus compatible?
device.option_add("musicmachine", CPC_MUSICMACHINE);
}
void aleste_exp_cards(device_slot_interface &device)
@ -888,6 +891,7 @@ void aleste_exp_cards(device_slot_interface &device)
device.option_add("hd20", CPC_HD20);
device.option_add("doubler", CPC_DOUBLER);
device.option_add("transtape", CPC_TRANSTAPE);
device.option_add("musicmachine", CPC_MUSICMACHINE);
device.option_add("magicsound", AL_MAGICSOUND);
}

1
src/mame/includes/amstrad.h
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@ -34,6 +34,7 @@
#include "bus/cpc/magicsound.h"
#include "bus/cpc/doubler.h"
#include "bus/cpc/transtape.h"
#include "bus/cpc/musicmachine.h"
#include "machine/ram.h"
#include "imagedev/cassette.h"
#include "bus/centronics/ctronics.h"