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// license:BSD-3-Clause
// copyright-holders:Nigel Barnes
/**********************************************************************
Microtan Bulldog Sound Generator Board
http://www.microtan.ukpc.net/pageProducts.html#SOUND
**********************************************************************/
#include "emu.h"
#include "bullsnd.h"
#include "speaker.h"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
DEFINE_DEVICE_TYPE(TANBUS_BULLSND, tanbus_bullsnd_device, "tanbus_bullsnd", "Microtan Bulldog Sound Generator Board")
//-------------------------------------------------
// device_add_mconfig - add device configuration
//-------------------------------------------------
void tanbus_bullsnd_device::device_add_mconfig(machine_config &config)
{
SPEAKER(config, "speaker").front_center();
AY8910(config, m_ay8910[0], DERIVED_CLOCK(1, 8)).add_route(ALL_OUTPUTS, "speaker", 0.5);
AY8910(config, m_ay8910[1], DERIVED_CLOCK(1, 8)).add_route(ALL_OUTPUTS, "speaker", 0.5);
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// tanbus_bullsnd_device - constructor
//-------------------------------------------------
tanbus_bullsnd_device::tanbus_bullsnd_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock)
: device_t(mconfig, TANBUS_BULLSND, tag, owner, clock)
, device_tanbus_interface(mconfig, *this)
, m_ay8910(*this, "ay8910%u", 0)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void tanbus_bullsnd_device::device_start()
{
}
//-------------------------------------------------
// read - card read
//-------------------------------------------------
uint8_t tanbus_bullsnd_device::read(offs_t offset, int inhrom, int inhram, int be)
{
uint8_t data = 0xff;
switch (offset)
{
case 0xbc01:
data = m_ay8910[0]->data_r();
break;
case 0xbc03:
data = m_ay8910[1]->data_r();
break;
}
return data;
}
//-------------------------------------------------
// write - card write
//-------------------------------------------------
void tanbus_bullsnd_device::write(offs_t offset, uint8_t data, int inhrom, int inhram, int be)
{
switch (offset)
{
case 0xbc00:
m_ay8910[0]->address_w(data);
break;
case 0xbc01:
m_ay8910[0]->data_w(data);
break;
case 0xbc02:
m_ay8910[1]->address_w(data);
break;
case 0xbc03:
m_ay8910[1]->data_w(data);
break;
}
}
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