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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
Toshiba T6721A C2MOS Voice Synthesizing LSI emulation
**********************************************************************/
#include "t6721a.h"
//**************************************************************************
// MACROS / CONSTANTS
//**************************************************************************
#define LOG 0
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
// device type definition
const device_type T6721A = &device_creator<t6721a_device>;
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// t6721a_device - constructor
//-------------------------------------------------
t6721a_device::t6721a_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock)
: device_t(mconfig, T6721A, "T6721A", tag, owner, clock, "t6721a", __FILE__),
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()
{
// resolve callbacks
m_write_eos.resolve_safe();
m_write_phi2.resolve_safe();
m_write_dtrd.resolve_safe();
m_write_apd.resolve_safe();
// create sound stream
m_stream = machine().sound().stream_alloc(*this, 0, 1, machine().sample_rate());
}
//-------------------------------------------------
// sound_stream_update - handle update requests for
// our sound stream
//-------------------------------------------------
void t6721a_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples)
{
}
//-------------------------------------------------
// read -
//-------------------------------------------------
READ8_MEMBER( t6721a_device::read )
{
return 0;
}
//-------------------------------------------------
// write -
//-------------------------------------------------
WRITE8_MEMBER( t6721a_device::write )
{
}
//-------------------------------------------------
// di_w - data input write
//-------------------------------------------------
WRITE_LINE_MEMBER( t6721a_device::di_w )
{
}
//-------------------------------------------------
// eos_r - eos read
//-------------------------------------------------
READ_LINE_MEMBER( t6721a_device::eos_r )
{
return 1;
}
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