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// license:BSD-3-Clause
// copyright-holders:Wilbert Pol
/**********************************************************************************
TODO:
- Properly hook up correct SRAM sizes for different moonsound compatible
cartridges. (Original moonsound has 128KB SRAM)
**********************************************************************************/
#include "emu.h"
#include "moonsound.h"
#include "sound/ymopl.h"
#include "speaker.h"
#define VERBOSE 0
#include "logmacro.h"
namespace {
class msx_cart_moonsound_device : public device_t, public msx_cart_interface
{
public:
msx_cart_moonsound_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
: device_t(mconfig, MSX_CART_MOONSOUND, tag, owner, clock)
, msx_cart_interface(mconfig, *this)
, m_ymf278b(*this, "ymf278b")
{ }
protected:
// device_t implementation
virtual void device_start() override ATTR_COLD;
virtual void device_reset() override ATTR_COLD;
virtual void device_add_mconfig(machine_config &config) override ATTR_COLD;
virtual const tiny_rom_entry *device_rom_region() const override ATTR_COLD;
private:
void irq_w(int state);
void write_ymf278b_pcm(offs_t offset, u8 data);
u8 read_ymf278b_pcm(offs_t offset);
u8 read_c0();
void ymf278b_map(address_map &map) ATTR_COLD;
required_device<ymf278b_device> m_ymf278b;
};
void msx_cart_moonsound_device::ymf278b_map(address_map &map)
{
map(0x000000, 0x1fffff).rom();
map(0x200000, 0x3fffff).ram(); // 2MB sram for testing
}
void msx_cart_moonsound_device::device_add_mconfig(machine_config &config)
{
// The moonsound cartridge has a separate stereo output.
SPEAKER(config, "speaker", 2).front();
YMF278B(config, m_ymf278b, 33.8688_MHz_XTAL);
m_ymf278b->set_addrmap(0, &msx_cart_moonsound_device::ymf278b_map);
m_ymf278b->irq_handler().set(FUNC(msx_cart_moonsound_device::irq_w));
m_ymf278b->add_route(0, "speaker", 0.50, 0);
m_ymf278b->add_route(1, "speaker", 0.50, 1);
m_ymf278b->add_route(2, "speaker", 0.40, 0);
m_ymf278b->add_route(3, "speaker", 0.40, 1);
m_ymf278b->add_route(4, "speaker", 0.50, 0);
m_ymf278b->add_route(5, "speaker", 0.50, 1);
}
ROM_START(msx_cart_moonsound)
ROM_REGION(0x400000, "ymf278b", 0)
ROM_LOAD("yrw801.rom", 0x0, 0x200000, CRC(2a9d8d43) SHA1(32760893ce06dbe3930627755ba065cc3d8ec6ca))
ROM_END
const tiny_rom_entry *msx_cart_moonsound_device::device_rom_region() const
{
return ROM_NAME(msx_cart_moonsound);
}
void msx_cart_moonsound_device::device_start()
{
// Install IO read/write handlers
io_space().install_readwrite_handler(0x7e, 0x7f, emu::rw_delegate(*this, FUNC(msx_cart_moonsound_device::read_ymf278b_pcm)), emu::rw_delegate(*this, FUNC(msx_cart_moonsound_device::write_ymf278b_pcm)));
io_space().install_readwrite_handler(0xc4, 0xc7, emu::rw_delegate(m_ymf278b, FUNC(ymf278b_device::read)), emu::rw_delegate(m_ymf278b, FUNC(ymf278b_device::write)));
io_space().install_read_handler(0xc0, 0xc0, emu::rw_delegate(*this, FUNC(msx_cart_moonsound_device::read_c0)));
}
void msx_cart_moonsound_device::device_reset()
{
}
void msx_cart_moonsound_device::irq_w(int state)
{
LOG("moonsound: irq state %d\n", state);
irq_out(state);
}
void msx_cart_moonsound_device::write_ymf278b_pcm(offs_t offset, u8 data)
{
LOG("moonsound: write 0x%02x, data 0x%02x\n", 0x7e + offset, data);
m_ymf278b->write(4 + offset, data);
}
u8 msx_cart_moonsound_device::read_ymf278b_pcm(offs_t offset)
{
LOG("moonsound: read 0x%02x\n", 0x7e + offset);
return m_ymf278b->read(4 + offset);
}
// For detecting presence of moonsound cartridge
u8 msx_cart_moonsound_device::read_c0()
{
LOG("moonsound: read 0xc0\n");
return 0x00;
}
} // anonymous namespace
DEFINE_DEVICE_TYPE_PRIVATE(MSX_CART_MOONSOUND, msx_cart_interface, msx_cart_moonsound_device, "msx_moonsound", "MSX Cartridge - MoonSound")
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