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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
Toshiba T6721A C2MOS Voice Synthesizing LSI emulation
**********************************************************************/
#include "emu.h"
#include "t6721a.h"
//#define VERBOSE 1
#include "logmacro.h"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
// device type definition
DEFINE_DEVICE_TYPE(T6721A, t6721a_device, "t6721a", "Toshiba T6721A")
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// t6721a_device - constructor
//-------------------------------------------------
t6721a_device::t6721a_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
device_t(mconfig, T6721A, tag, owner, clock),
device_sound_interface(mconfig, *this),
m_write_eos(*this),
m_write_phi2(*this),
m_write_dtrd(*this),
m_write_apd(*this),
m_stream(nullptr)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void t6721a_device::device_start()
{
// create sound stream
m_stream = stream_alloc(0, 1, machine().sample_rate());
}
//-------------------------------------------------
// sound_stream_update - handle update requests for
// our sound stream
//-------------------------------------------------
void t6721a_device::sound_stream_update(sound_stream &stream)
{
}
//-------------------------------------------------
// read -
//-------------------------------------------------
uint8_t t6721a_device::read()
{
return 0;
}
//-------------------------------------------------
// write -
//-------------------------------------------------
void t6721a_device::write(uint8_t data)
{
}
//-------------------------------------------------
// di_w - data input write
//-------------------------------------------------
void t6721a_device::di_w(int state)
{
}
//-------------------------------------------------
// eos_r - eos read
//-------------------------------------------------
int t6721a_device::eos_r()
{
return 1;
}
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