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-rw-r--r--src/mame/drivers/ymdx100.cpp144
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diff --git a/src/mame/drivers/ymdx100.cpp b/src/mame/drivers/ymdx100.cpp
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+// license:BSD-3-Clause
+// copyright-holders:AJR
+/*******************************************************************************
+
+ Skeleton driver for Yamaha DX100 & DX27 FM synthesizers.
+
+ The main differences between DX100 and DX27 are that DX27 has 61 keys
+ rather than 49, but DX100 is portable and can run on battery power. Their
+ tone generation capabilities are identical.
+
+*******************************************************************************/
+
+#include "emu.h"
+
+#include "bus/midi/midi.h"
+#include "cpu/m6800/m6801.h"
+#include "machine/adc0808.h"
+#include "machine/clock.h"
+#include "machine/nvram.h"
+#include "sound/ymopm.h"
+#include "video/hd44780.h"
+
+#include "emupal.h"
+#include "screen.h"
+#include "speaker.h"
+
+namespace {
+
+class yamaha_dx100_state : public driver_device
+{
+public:
+ yamaha_dx100_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag)
+ , m_maincpu(*this, "maincpu")
+ , m_midi_in(true)
+ {
+ }
+
+ void dx100(machine_config &config);
+
+protected:
+ virtual void machine_start() override;
+
+private:
+ HD44780_PIXEL_UPDATE(lcd_pixel_update);
+ void palette_init(palette_device &palette);
+
+ DECLARE_WRITE_LINE_MEMBER(p22_w);
+
+ void mem_map(address_map &map);
+
+ required_device<hd6303x_cpu_device> m_maincpu;
+
+ bool m_midi_in;
+};
+
+void yamaha_dx100_state::machine_start()
+{
+ save_item(NAME(m_midi_in));
+}
+
+HD44780_PIXEL_UPDATE(yamaha_dx100_state::lcd_pixel_update)
+{
+ if (x < 5 && y < 8 && line < 2 && pos < 16)
+ bitmap.pix(line * 10 + y + 1 + ((y == 7) ? 1 : 0), pos * 6 + x + 1) = state ? 1 : 2;
+}
+
+void yamaha_dx100_state::palette_init(palette_device &palette)
+{
+ palette.set_pen_color(0, rgb_t(0x00, 0x00, 0x00)); // background
+ palette.set_pen_color(1, rgb_t(0xff, 0xff, 0xff)); // lcd pixel on
+ palette.set_pen_color(2, rgb_t(0x18, 0x18, 0x18)); // lcd pixel off
+}
+
+WRITE_LINE_MEMBER(yamaha_dx100_state::p22_w)
+{
+ if (state)
+ m_maincpu->m6801_clock_serial();
+}
+
+void yamaha_dx100_state::mem_map(address_map &map)
+{
+ map(0x0000, 0x001f).m(m_maincpu, FUNC(hd6303x_cpu_device::hd6301x_io));
+ map(0x0040, 0x00ff).ram(); // internal RAM
+ map(0x0800, 0x0fff).ram().share("nvram");
+ map(0x1000, 0x17ff).ram();
+ map(0x2000, 0x2001).rw("lcdc", FUNC(hd44780_device::read), FUNC(hd44780_device::write));
+ map(0x2800, 0x2800).r("adc", FUNC(m58990_device::data_r));
+ map(0x3000, 0x3000).w("adc", FUNC(m58990_device::address_data_start_w));
+ map(0x3800, 0x3801).rw("ymsnd", FUNC(ym2164_device::read), FUNC(ym2164_device::write));
+ map(0x8000, 0xffff).rom().region("program", 0);
+}
+
+static INPUT_PORTS_START(dx100)
+INPUT_PORTS_END
+
+void yamaha_dx100_state::dx100(machine_config &config)
+{
+ HD6303X(config, m_maincpu, 7.15909_MHz_XTAL / 2); // HD6303XP
+ m_maincpu->set_addrmap(AS_PROGRAM, &yamaha_dx100_state::mem_map);
+ m_maincpu->in_p2_cb().set([this]() -> u8 { return m_midi_in ? 0x04 : 0; });
+ m_maincpu->in_p6_cb().set("adc", FUNC(m58990_device::eoc_r)).lshift(4);
+ m_maincpu->out_ser_tx_cb().set("mdout", FUNC(midi_port_device::write_txd));
+
+ NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0); // TC5518BPL + CR2032T battery
+
+ m58990_device &adc(M58990(config, "adc", 7.15909_MHz_XTAL / 8)); // M58990P-1 (clocked by E)
+ adc.in_callback<5>().set_constant(0x80); // "CNG RAM BATTERY!" displayed unless value is between 0x70 and 0xCC
+
+ CLOCK(config, "subclock", 500_kHz_XTAL).signal_handler().set(FUNC(yamaha_dx100_state::p22_w));
+
+ MIDI_PORT(config, "mdin", midiin_slot, "midiin").rxd_handler().set([this](int state) { m_midi_in = state; });
+ MIDI_PORT(config, "mdout", midiout_slot, "midiout");
+
+ screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_LCD));
+ screen.set_refresh_hz(60);
+ screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
+ screen.set_screen_update("lcdc", FUNC(hd44780_device::screen_update));
+ screen.set_size(6*16+1, 10*2+1);
+ screen.set_visarea_full();
+ screen.set_palette("palette");
+
+ PALETTE(config, "palette", FUNC(yamaha_dx100_state::palette_init), 3);
+
+ hd44780_device &lcdc(HD44780(config, "lcdc", 0)); // HD44780RA00
+ lcdc.set_lcd_size(2, 16);
+ lcdc.set_pixel_update_cb(FUNC(yamaha_dx100_state::lcd_pixel_update));
+
+ SPEAKER(config, "lspeaker").front_left();
+ SPEAKER(config, "rspeaker").front_right();
+
+ ym2164_device &ymsnd(YM2164(config, "ymsnd", 7.15909_MHz_XTAL / 2)); // with YM3014 DAC
+ ymsnd.add_route(0, "lspeaker", 0.60);
+ ymsnd.add_route(1, "rspeaker", 0.60);
+}
+
+ROM_START(dx100)
+ ROM_REGION(0x8000, "program", 0)
+ ROM_LOAD("dx100 v1.1.bin", 0x0000, 0x8000, CRC(c3ed7c86) SHA1(5b003db1bb5c1909907153f6446b63b07f5b41d6))
+ROM_END
+
+} // anonymous namespace
+
+SYST(1985, dx100, 0, 0, dx100, dx100, yamaha_dx100_state, empty_init, "Yamaha", "DX100 Digital Programmable Algorithm Synthesizer", MACHINE_IS_SKELETON)