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Diffstat (limited to 'src/mame/drivers/ymdx100.cpp')
-rw-r--r-- | src/mame/drivers/ymdx100.cpp | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/src/mame/drivers/ymdx100.cpp b/src/mame/drivers/ymdx100.cpp new file mode 100644 index 00000000000..a9b7813b425 --- /dev/null +++ b/src/mame/drivers/ymdx100.cpp @@ -0,0 +1,144 @@ +// 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) |