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sfx_sound_expander.cpp
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sfx_sound_expander.cpp
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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
Commodore SFX Sound Expander cartridge emulation
**********************************************************************/
#include "emu.h"
#include "sfx_sound_expander.h"
#include "speaker.h"
//**************************************************************************
// MACROS / CONSTANTS
//**************************************************************************
#define YM3526_TAG "ic3"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
DEFINE_DEVICE_TYPE(C64_SFX_SOUND_EXPANDER, c64_sfx_sound_expander_cartridge_device, "c64_sfxse", "C64 SFX Sound Expander cartridge")
//-------------------------------------------------
// ym3526_interface ym3526_config
//-------------------------------------------------
void c64_sfx_sound_expander_cartridge_device::opl_irq_w(int state)
{
m_slot->irq_w(state);
}
//-------------------------------------------------
// device_add_mconfig - add device configuration
//-------------------------------------------------
void c64_sfx_sound_expander_cartridge_device::device_add_mconfig(machine_config &config)
{
SPEAKER(config, "mono").front_center();
YM3526(config, m_opl, XTAL(3'579'545));
m_opl->irq_handler().set(FUNC(c64_sfx_sound_expander_cartridge_device::opl_irq_w));
m_opl->add_route(ALL_OUTPUTS, "mono", 0.70);
C64_EXPANSION_SLOT(config, m_exp, DERIVED_CLOCK(1, 1), c64_expansion_cards, nullptr);
m_exp->set_passthrough();
}
//-------------------------------------------------
// INPUT_PORTS( c64_sfx_sound_expander )
//-------------------------------------------------
static INPUT_PORTS_START( c64_sfx_sound_expander )
PORT_START("KB0")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("C2")
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("C#2")
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("D")
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("D#2")
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("E2")
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F2")
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F#2")
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("G2")
PORT_START("KB1")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("G#2")
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("A3")
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("A#3")
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("B3")
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("C3")
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("C#3")
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("D3")
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("D#3")
PORT_START("KB2")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("E3")
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F3")
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F#3")
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("G3")
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("G#3")
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("A4")
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("A#4")
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("B4")
PORT_START("KB3")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("C4")
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("C#4")
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("D4")
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("D#4")
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("E4")
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F4")
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F#4")
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("G4")
PORT_START("KB4")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("G#4")
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("A5")
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("A#5")
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("B5")
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("C5")
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("C#5")
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("D5")
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("D#5")
PORT_START("KB5")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("E5")
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F5")
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F#5")
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("G5")
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("G#5")
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("A6")
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("A#6")
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("B6")
PORT_START("KB6")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("C6")
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("C#6")
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("D6")
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("D#6")
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("E6")
PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F6")
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F#6")
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("G6")
PORT_START("KB7")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("G#6")
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("A7")
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("A#7")
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("B7")
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("C7")
PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
INPUT_PORTS_END
//-------------------------------------------------
// input_ports - device-specific input ports
//-------------------------------------------------
ioport_constructor c64_sfx_sound_expander_cartridge_device::device_input_ports() const
{
return INPUT_PORTS_NAME( c64_sfx_sound_expander );
}
//**************************************************************************
// INLINE HELPERS
//**************************************************************************
//-------------------------------------------------
// get_offset - get passthru expansion port offset
//-------------------------------------------------
inline offs_t c64_sfx_sound_expander_cartridge_device::get_offset(offs_t offset, int rw)
{
// assimilate the 3 different MIDI cartridge 6850 ACIA register mappings?
return (offset & 0xfffc) | (rw << 1) | BIT(offset, 1);
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// c64_sfx_sound_expander_cartridge_device - constructor
//-------------------------------------------------
c64_sfx_sound_expander_cartridge_device::c64_sfx_sound_expander_cartridge_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
device_t(mconfig, C64_SFX_SOUND_EXPANDER, tag, owner, clock),
device_c64_expansion_card_interface(mconfig, *this),
m_opl(*this, YM3526_TAG),
m_exp(*this, "exp"),
m_kb(*this, "KB%u", 0)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void c64_sfx_sound_expander_cartridge_device::device_start()
{
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void c64_sfx_sound_expander_cartridge_device::device_reset()
{
m_opl->reset();
}
//-------------------------------------------------
// c64_cd_r - cartridge data read
//-------------------------------------------------
uint8_t c64_sfx_sound_expander_cartridge_device::c64_cd_r(offs_t offset, uint8_t data, int sphi2, int ba, int roml, int romh, int io1, int io2)
{
data = m_exp->cd_r(get_offset(offset, 1), data, sphi2, ba, roml, romh, io1, io2);
if (!io2 && sphi2)
{
if (BIT(offset, 3))
{
data = m_kb[offset & 0x07]->read();
}
if (BIT(offset, 5))
{
data = m_opl->read(BIT(offset, 4));
}
}
return data;
}
//-------------------------------------------------
// c64_cd_w - cartridge data write
//-------------------------------------------------
void c64_sfx_sound_expander_cartridge_device::c64_cd_w(offs_t offset, uint8_t data, int sphi2, int ba, int roml, int romh, int io1, int io2)
{
if (!io2 && sphi2)
{
m_opl->write(BIT(offset, 4), data);
}
m_exp->cd_w(get_offset(offset, 0), data, sphi2, ba, roml, romh, io1, io2);
}
//-------------------------------------------------
// c64_game_r - GAME read
//-------------------------------------------------
int c64_sfx_sound_expander_cartridge_device::c64_game_r(offs_t offset, int sphi2, int ba, int rw)
{
return m_exp->game_r(get_offset(offset, rw), sphi2, ba, rw, m_slot->loram(), m_slot->hiram());
}
//-------------------------------------------------
// c64_exrom_r - EXROM read
//-------------------------------------------------
int c64_sfx_sound_expander_cartridge_device::c64_exrom_r(offs_t offset, int sphi2, int ba, int rw)
{
return m_exp->exrom_r(get_offset(offset, rw), sphi2, ba, rw, m_slot->loram(), m_slot->hiram());
}