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Diffstat (limited to 'src/mame/drivers/juno106.cpp')
-rw-r--r-- | src/mame/drivers/juno106.cpp | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/src/mame/drivers/juno106.cpp b/src/mame/drivers/juno106.cpp new file mode 100644 index 00000000000..1af87663ff1 --- /dev/null +++ b/src/mame/drivers/juno106.cpp @@ -0,0 +1,104 @@ +// license:BSD-3-Clause +// copyright-holders:AJR +/**************************************************************************** + + Skeleton driver for Roland Juno-106 synthesizer. + +****************************************************************************/ + +#include "emu.h" +#include "cpu/upd7810/upd7810.h" +#include "machine/nvram.h" +#include "machine/pit8253.h" + +class juno106_state : public driver_device +{ +public: + juno106_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag) + , m_maincpu(*this, "maincpu") + , m_modulecpu(*this, "modulecpu") + , m_pit(*this, "pit%u", 1U) + { + } + + void juno106(machine_config &config); + +protected: + virtual void machine_start() override; + +private: + void cpu_latch_w(u8 data); + void module_pit_w(offs_t offset, u8 data); + void module_latch_w(u8 data); + + void main_map(address_map &map); + void module_map(address_map &map); + + required_device<upd7810_device> m_maincpu; + required_device<upd7810_device> m_modulecpu; + required_device_array<pit8253_device, 2> m_pit; +}; + +void juno106_state::machine_start() +{ +} + + +void juno106_state::cpu_latch_w(u8 data) +{ +} + +void juno106_state::module_pit_w(offs_t offset, u8 data) +{ + if (!BIT(offset, 12)) + m_pit[0]->write((offset & 0x300) >> 8, data); + if (!BIT(offset, 13)) + m_pit[1]->write((offset & 0x300) >> 8, data); +} + +void juno106_state::module_latch_w(u8 data) +{ +} + +void juno106_state::main_map(address_map &map) +{ + map(0x0000, 0x1fff).rom().region("assigner", 0); + map(0x0000, 0x0000).mirror(0x1fff).w(FUNC(juno106_state::cpu_latch_w)); + map(0x2000, 0x27ff).mirror(0x1800).ram().share("nvram"); +} + +void juno106_state::module_map(address_map &map) +{ + map(0x0000, 0x0fff).mirror(0x3000).rom().region("module", 0); + map(0x0000, 0x2fff).w(FUNC(juno106_state::module_pit_w)); + map(0x3000, 0x3000).mirror(0x0fff).w(FUNC(juno106_state::module_latch_w)); +} + + +static INPUT_PORTS_START(juno106) +INPUT_PORTS_END + +void juno106_state::juno106(machine_config &config) +{ + UPD7810(config, m_maincpu, 12_MHz_XTAL); // µPD7810G or µPD7811G-101-36 + m_maincpu->set_addrmap(AS_PROGRAM, &juno106_state::main_map); + + UPD7810(config, m_modulecpu, 12_MHz_XTAL); // µPD7810G or µPD7811G-102-36 + m_modulecpu->set_addrmap(AS_PROGRAM, &juno106_state::module_map); + + NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0); // TC5517APL or MB8416-20L + battery + + PIT8253(config, m_pit[0]); // M82C53 + PIT8253(config, m_pit[1]); // M82C53 +} + +ROM_START(juno106) + ROM_REGION(0x2000, "assigner", 0) + ROM_LOAD("v5 a_5.ic2", 0x0000, 0x2000, CRC(4818686b) SHA1(4ab414a70281d382cb45478a62a6467e8dbb0a5d)) + + ROM_REGION(0x2000, "module", 0) + ROM_LOAD("v2 b_2.ic37", 0x0000, 0x2000, CRC(e0dc721e) SHA1(892b919a2476b269d916ba01dd5a81a25e044171)) +ROM_END + +SYST(1984, juno106, 0, 0, juno106, juno106, juno106_state, empty_init, "Roland", "Juno-106 Programmable Polyphonic Synthesizer", MACHINE_IS_SKELETON) |