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New NOT WORKING machines
======================== Yamaha PSR-60 PortaSound [R. Belmont, JKN0, d-tech]
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@ -4381,6 +4381,7 @@ files {
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MAME_DIR .. "src/mame/drivers/ymmu50.cpp",
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MAME_DIR .. "src/mame/drivers/ymmu80.cpp",
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MAME_DIR .. "src/mame/drivers/ymmu100.cpp",
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MAME_DIR .. "src/mame/drivers/ympsr60.cpp",
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MAME_DIR .. "src/mame/drivers/ympsr340.cpp",
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MAME_DIR .. "src/mame/drivers/ymtx81z.cpp",
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MAME_DIR .. "src/mame/drivers/ymvl70.cpp",
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164
src/mame/drivers/ympsr60.cpp
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164
src/mame/drivers/ympsr60.cpp
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@ -0,0 +1,164 @@
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// license:BSD-3-Clause
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// copyright-holders:R. Belmont
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/*
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Yamaha PSR-60/PSR-70 PortaSound keyboards
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Preliminary driver by R. Belmont, major thanks to reverse-engineering work by JKN0
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Documentation: https://github.com/JKN0/PSR70-reverse
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More documentation: https://retroandreverse.blogspot.com/2021/01/reversing-psr-70-hardware.html
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https://retroandreverse.blogspot.com/2021/01/reversing-psr-70-firmware.html
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https://retroandreverse.blogspot.com/2021/01/digging-into-ym3806.html
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Service manual: https://elektrotanya.com/yamaha_psr-70_sm.pdf/download.html
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CPU: Z80 @ 6 MHz
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Sound: YM3806 "OPQ" FM @ 3.58 MHz + YM2154 "RYP" sample playback chip for drums
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Panel and keyboard I/O: 82C55A PPI and Yamaha IG14330 "DRVIF"
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MIDI I/O: HD6350 ACIA, baud rate clock is 500 kHz
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Z80 IRQ is a wire-OR of IRQs from the OPQ, RYP4, ACIA, and DRVIF
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PPI ports:
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PA0-PA5: keyboard matrix readback (PA5-PA0 for most matrix selects, where PA5 is the lowest key and PA0 is the highest)
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PA6: single-use matrix readback for C1 (when PC1 is active)
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PA7: cassette input
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Keyboard matrix select writes:
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PC1: C1 - F#1
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PC0: G1 - C2
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PB7: C#2 - F#2
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PB6: G2 - C3
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PB5: C#3 - F#3
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PB4: G3 - C4
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PB3: C#4 - F#4
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PB2: G4 - C5
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PB1: C#5 - F#5
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PB0: G5 - C6
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PC3: unused
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PC4: ROM2 bank (goes to A14)
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PC5: cassette output
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PC6: MUTE
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PC7: to "RS2" signal, IC (reset, "initial clear" in Yamaha-speak) pin on T9500
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*/
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#include "emu.h"
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#include "cpu/z80/z80.h"
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#include "machine/i8255.h"
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#include "machine/6850acia.h"
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#include "machine/clock.h"
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#include "bus/midi/midi.h"
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#include "emupal.h"
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#include "screen.h"
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#include "speaker.h"
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class psr60_state : public driver_device
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{
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public:
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psr60_state(const machine_config &mconfig, device_type type, const char *tag) :
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driver_device(mconfig, type, tag),
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m_maincpu(*this, "maincpu"),
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m_ppi(*this, "ppi"),
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m_acia(*this, "acia"),
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m_rom2bank(*this, "rom2bank")
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{ }
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void psr60(machine_config &config);
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protected:
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virtual void machine_start() override;
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virtual void machine_reset() override;
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private:
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required_device<z80_device> m_maincpu;
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required_device<i8255_device> m_ppi;
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required_device<acia6850_device> m_acia;
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required_memory_bank m_rom2bank;
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void psr60_map(address_map &map);
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void psr60_io_map(address_map &map);
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void ppi_pc_w(u8 data);
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void recalc_irqs();
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int m_acia_irq;
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WRITE_LINE_MEMBER(write_acia_clock) { m_acia->write_txc(state); m_acia->write_rxc(state); }
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WRITE_LINE_MEMBER(acia_irq_w) { m_acia_irq = state; recalc_irqs(); }
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};
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void psr60_state::psr60_map(address_map &map)
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{
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map(0x0000, 0x7fff).rom().region("rom1", 0);
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map(0x8000, 0xbfff).bankr("rom2bank");
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// c000-c0ff: YM3806 "OPQ" FM chip
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map(0xe000, 0xffff).ram(); // work RAM
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}
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void psr60_state::psr60_io_map(address_map &map)
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{
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map.global_mask(0xff); // top 8 bits of the address are ignored by this hardware for I/O access
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map(0x10, 0x11).rw(m_acia, FUNC(acia6850_device::read), FUNC(acia6850_device::write));
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map(0x20, 0x23).rw(m_ppi, FUNC(i8255_device::read), FUNC(i8255_device::write));
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// 30-40: IG14330 "DRVIF" (front panel LED driver/multiplexer?)
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// 80-FF: YM2154 "RYP4" (drum sample playback)
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}
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void psr60_state::ppi_pc_w(u8 data)
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{
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m_rom2bank->set_entry(BIT(data, 4));
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}
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void psr60_state::recalc_irqs()
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{
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int irq_state = m_acia_irq; // (| OPQ, RYP4, and DRVIF interrupts eventually)
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m_maincpu->set_input_line(0, irq_state);
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}
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void psr60_state::machine_start()
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{
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m_rom2bank->configure_entries(0, 2, memregion("rom2")->base(), 0x4000);
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m_rom2bank->set_entry(0);
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}
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void psr60_state::machine_reset()
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{
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}
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static INPUT_PORTS_START(psr60)
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INPUT_PORTS_END
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void psr60_state::psr60(machine_config &config)
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{
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/* basic machine hardware */
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Z80(config, m_maincpu, 6_MHz_XTAL);
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m_maincpu->set_addrmap(AS_PROGRAM, &psr60_state::psr60_map);
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m_maincpu->set_addrmap(AS_IO, &psr60_state::psr60_io_map);
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I8255A(config, m_ppi, 6_MHz_XTAL);
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m_ppi->out_pc_callback().set(FUNC(psr60_state::ppi_pc_w));
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ACIA6850(config, m_acia, 500_kHz_XTAL); // actually an HD6350, differences unknown (if any)
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m_acia->txd_handler().set("mdout", FUNC(midi_port_device::write_txd));
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m_acia->irq_handler().set(FUNC(psr60_state::acia_irq_w));
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MIDI_PORT(config, "mdin", midiin_slot, "midiin").rxd_handler().set(m_acia, FUNC(acia6850_device::write_rxd));
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MIDI_PORT(config, "mdout", midiout_slot, "midiout");
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clock_device &acia_clock(CLOCK(config, "acia_clock", 500_kHz_XTAL)); // 31250 * 16 = 500,000
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acia_clock.signal_handler().set(FUNC(psr60_state::write_acia_clock));
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SPEAKER(config, "lspeaker").front_left();
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SPEAKER(config, "rspeaker").front_right();
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}
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ROM_START( psr60 )
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ROM_REGION(0x8000, "rom1", 0)
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ROM_LOAD("yamaha_psr60_pgm_ic109.bin", 0x000000, 0x008000, CRC(95604916) SHA1(811fb88fc968c58234600eb9fbf1f64e411754cd))
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ROM_REGION(0x8000, "rom2", 0)
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ROM_LOAD("yamaha_psr60_pgm_ic110.bin", 0x000000, 0x008000, CRC(39db8c74) SHA1(7750104d1e5df3357aa553ac58768dbc34051cd8))
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ROM_END
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CONS(1985, psr60, 0, 0, psr60, psr60, psr60_state, empty_init, "Yamaha", "PSR-60 PortaSound", MACHINE_NOT_WORKING)
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