diff options
Diffstat (limited to 'src/devices/bus/mpf1/sgb.cpp')
-rw-r--r-- | src/devices/bus/mpf1/sgb.cpp | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/src/devices/bus/mpf1/sgb.cpp b/src/devices/bus/mpf1/sgb.cpp new file mode 100644 index 00000000000..9866c05844d --- /dev/null +++ b/src/devices/bus/mpf1/sgb.cpp @@ -0,0 +1,73 @@ +// license:BSD-3-Clause +// copyright-holders:Nigel Barnes +/*************************************************************************** + + Multitech Sound Generation Board + + Piano : ADDR C200 GO + +***************************************************************************/ + +#include "emu.h" +#include "sgb.h" +#include "sound/ay8910.h" +#include "speaker.h" + + +namespace { + +//------------------------------------------------- +// rom_region - device-specific ROM region +//------------------------------------------------- + +ROM_START( mpf_sgb ) + ROM_REGION(0x1000, "rom", 0) + ROM_LOAD("sgb-mpf.bin", 0x0000, 0x1000, CRC(2d51d964) SHA1(13f3c7243d691b66ad5f0dcbbc16488c8905a394)) +ROM_END + + +//------------------------------------------------- +// mpf_sgb_device - constructor +//------------------------------------------------- + +class mpf_sgb_device : public device_t, public device_mpf1_exp_interface +{ +public: + mpf_sgb_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) + : device_t(mconfig, MPF_SGB, tag, owner, clock) + , device_mpf1_exp_interface(mconfig, *this) + , m_rom(*this, "rom") + , m_ay(*this, "ay8910") + { + } + +protected: + virtual void device_add_mconfig(machine_config &config) override + { + SPEAKER(config, "mono").front_center(); + AY8910(config, m_ay, DERIVED_CLOCK(1, 1)).add_route(ALL_OUTPUTS, "mono", 1.0); + } + + virtual const tiny_rom_entry *device_rom_region() const override + { + return ROM_NAME( mpf_sgb ); + } + + virtual void device_start() override { } + virtual void device_reset() override + { + program_space().install_rom(0xc000, 0xcfff, m_rom->base()); + + io_space().install_read_handler(0xc1, 0xc1, emu::rw_delegate(*m_ay, FUNC(ay8910_device::data_r))); + io_space().install_write_handler(0xc2, 0xc3, emu::rw_delegate(*m_ay, FUNC(ay8910_device::data_address_w))); + } + +private: + required_memory_region m_rom; + required_device<ay8910_device> m_ay; +}; + +} // anonymous namespace + + +DEFINE_DEVICE_TYPE_PRIVATE(MPF_SGB, device_mpf1_exp_interface, mpf_sgb_device, "mpf1_sgb", "Multitech SGB-MPF (Sound Generation Board)") |