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-rw-r--r--src/mame/drivers/juno106.cpp104
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)