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Diffstat (limited to 'src/devices/bus/msx_cart/moonsound.c')
-rw-r--r--src/devices/bus/msx_cart/moonsound.c126
1 files changed, 126 insertions, 0 deletions
diff --git a/src/devices/bus/msx_cart/moonsound.c b/src/devices/bus/msx_cart/moonsound.c
new file mode 100644
index 00000000000..cdae9385815
--- /dev/null
+++ b/src/devices/bus/msx_cart/moonsound.c
@@ -0,0 +1,126 @@
+// 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"
+
+
+#define VERBOSE 0
+#define LOG(x) do { if (VERBOSE) logerror x; } while (0)
+
+
+const device_type MSX_CART_MOONSOUND = &device_creator<msx_cart_moonsound>;
+
+
+msx_cart_moonsound::msx_cart_moonsound(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+ : device_t(mconfig, MSX_CART_MOONSOUND, "MSX Cartridge - MoonSound", tag, owner, clock, "msx_moonsound", __FILE__)
+ , msx_cart_interface(mconfig, *this)
+ , m_ymf278b(*this, "ymf278b")
+{
+}
+
+
+static ADDRESS_MAP_START( ymf278b_map, AS_0, 8, msx_cart_moonsound )
+ AM_RANGE(0x000000, 0x1fffff) AM_ROM
+ AM_RANGE(0x200000, 0x3fffff) AM_RAM // 2MB sram for testing
+ADDRESS_MAP_END
+
+
+static MACHINE_CONFIG_FRAGMENT( moonsound )
+ // The moonsound cartridge has a separate stereo output.
+ MCFG_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker")
+ MCFG_SOUND_ADD("ymf278b", YMF278B, YMF278B_STD_CLOCK)
+ MCFG_DEVICE_ADDRESS_MAP(AS_0, ymf278b_map)
+ MCFG_YMF278B_IRQ_HANDLER(WRITELINE(msx_cart_moonsound,irq_w))
+ MCFG_SOUND_ROUTE(0, "lspeaker", 0.50)
+ MCFG_SOUND_ROUTE(1, "rspeaker", 0.50)
+ MCFG_SOUND_ROUTE(2, "lspeaker", 0.40)
+ MCFG_SOUND_ROUTE(3, "rspeaker", 0.40)
+ MCFG_SOUND_ROUTE(4, "lspeaker", 0.40)
+ MCFG_SOUND_ROUTE(5, "rspeaker", 0.40)
+MACHINE_CONFIG_END
+
+
+machine_config_constructor msx_cart_moonsound::device_mconfig_additions() const
+{
+ return MACHINE_CONFIG_NAME( moonsound );
+}
+
+
+ROM_START( msx_cart_moonsound )
+ ROM_REGION(0x400000, "ymf278b", 0)
+ ROM_LOAD("yrw801.rom", 0x0, 0x200000, CRC(2a9d8d43) SHA1(32760893ce06dbe3930627755ba065cc3d8ec6ca))
+ROM_END
+
+
+const rom_entry *msx_cart_moonsound::device_rom_region() const
+{
+ return ROM_NAME( msx_cart_moonsound );
+}
+
+
+void msx_cart_moonsound::device_start()
+{
+ m_out_irq_cb.resolve_safe();
+
+ // Install IO read/write handlers
+ address_space &space = machine().device<cpu_device>("maincpu")->space(AS_IO);
+ space.install_readwrite_handler(0x7e, 0x7f, read8_delegate(FUNC(msx_cart_moonsound::read_ymf278b_pcm), this), write8_delegate(FUNC(msx_cart_moonsound::write_ymf278b_pcm), this));
+ space.install_readwrite_handler(0xc4, 0xc7, read8_delegate(FUNC(msx_cart_moonsound::read_ymf278b_fm), this), write8_delegate(FUNC(msx_cart_moonsound::write_ymf278b_fm), this));
+ space.install_read_handler(0xc0, 0xc0, read8_delegate(FUNC(msx_cart_moonsound::read_c0), this));
+}
+
+
+void msx_cart_moonsound::device_reset()
+{
+}
+
+
+WRITE_LINE_MEMBER(msx_cart_moonsound::irq_w)
+{
+ LOG(("moonsound: irq state %d\n", state));
+ m_out_irq_cb(state);
+}
+
+
+WRITE8_MEMBER(msx_cart_moonsound::write_ymf278b_fm)
+{
+ LOG(("moonsound: write 0x%02x, data 0x%02x\n", 0xc4 + offset, data));
+ m_ymf278b->write(space, offset, data);
+}
+
+
+READ8_MEMBER(msx_cart_moonsound::read_ymf278b_fm)
+{
+ LOG(("moonsound: read 0x%02x\n", 0xc4 + offset));
+ return m_ymf278b->read(space, offset);
+}
+
+
+WRITE8_MEMBER(msx_cart_moonsound::write_ymf278b_pcm)
+{
+ LOG(("moonsound: write 0x%02x, data 0x%02x\n", 0x7e + offset, data));
+ m_ymf278b->write(space, 4 + offset, data);
+}
+
+
+READ8_MEMBER(msx_cart_moonsound::read_ymf278b_pcm)
+{
+ LOG(("moonsound: read 0x%02x\n", 0x7e + offset));
+ return m_ymf278b->read(space, 4 + offset);
+}
+
+
+// For detecting presence of moonsound cartridge
+READ8_MEMBER(msx_cart_moonsound::read_c0)
+{
+ LOG(("moonsound: read 0xc0\n"));
+ return 0x00;
+}