From eba9f9ee8461814b527f1ed806c26452f5e8deb6 Mon Sep 17 00:00:00 2001 From: arbee Date: Tue, 27 Apr 2021 15:40:59 -0400 Subject: [PATCH] tx81z: hook up MIDI I/O [R. Belmont] --- src/mame/drivers/ymtx81z.cpp | 28 ++++++++++++++++++++++++++-- 1 file changed, 26 insertions(+), 2 deletions(-) diff --git a/src/mame/drivers/ymtx81z.cpp b/src/mame/drivers/ymtx81z.cpp index 8680a59f698..e135ef967fe 100644 --- a/src/mame/drivers/ymtx81z.cpp +++ b/src/mame/drivers/ymtx81z.cpp @@ -13,6 +13,7 @@ #include "machine/nvram.h" #include "sound/ym2151.h" #include "video/hd44780.h" +#include "bus/midi/midi.h" #include "emupal.h" #include "screen.h" #include "speaker.h" @@ -23,6 +24,7 @@ public: ymtx81z_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") + , m_port2(*this, "P2") { } @@ -37,7 +39,14 @@ private: void mem_map(address_map &map); + u8 p2_r(); + WRITE_LINE_MEMBER(midi_rx_r) { m_rx_data = state; } + WRITE_LINE_MEMBER(midiclock_w) { if (state == ASSERT_LINE) m_maincpu->m6801_clock_serial();} + required_device m_maincpu; + required_ioport m_port2; + + int m_rx_data; }; HD44780_PIXEL_UPDATE(ymtx81z_state::lcd_pixel_update) @@ -55,11 +64,13 @@ void ymtx81z_state::palette_init(palette_device &palette) void ymtx81z_state::machine_start() { membank("rombank")->configure_entries(0, 2, memregion("program")->base(), 0x8000); + m_rx_data = ASSERT_LINE; } void ymtx81z_state::mem_map(address_map &map) { map(0x0000, 0x001f).m(m_maincpu, FUNC(hd6303x_cpu_device::hd6301x_io)); + map(0x001b, 0x001b).noprw(); map(0x0040, 0x00ff).ram(); // internal RAM map(0x2000, 0x2001).mirror(0x1ffe).rw("ymsnd", FUNC(ym2414_device::read), FUNC(ym2414_device::write)); map(0x4000, 0x4001).mirror(0x1ffe).rw("lcdc", FUNC(hd44780_device::read), FUNC(hd44780_device::write)); @@ -67,6 +78,13 @@ void ymtx81z_state::mem_map(address_map &map) map(0x8000, 0xffff).bankr("rombank"); } +u8 ymtx81z_state::p2_r() +{ + u8 result = m_port2->read() & 0xf7; + result |= (m_rx_data << 3); + return result; +} + static INPUT_PORTS_START(tx81z) PORT_START("P2") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_UNUSED) @@ -100,7 +118,7 @@ void ymtx81z_state::tx81z(machine_config &config) { HD6303X(config, m_maincpu, 7.15909_MHz_XTAL); // HD63B03XP m_maincpu->set_addrmap(AS_PROGRAM, &ymtx81z_state::mem_map); - m_maincpu->in_p2_cb().set_ioport("P2"); + m_maincpu->in_p2_cb().set(FUNC(ymtx81z_state::p2_r)); m_maincpu->in_p5_cb().set_ioport("P5"); m_maincpu->in_p6_cb().set_ioport("P6"); m_maincpu->out_p6_cb().set_membank("rombank").bit(3); @@ -111,7 +129,13 @@ void ymtx81z_state::tx81z(machine_config &config) NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0); // TC5564PL-15/-20 + CR2032 battery - CLOCK(config, "midiclock", 500_kHz_XTAL); + auto &midiclock(CLOCK(config, "midiclock", 31250*8)); + midiclock.signal_handler().set(FUNC(ymtx81z_state::midiclock_w)); + + MIDI_PORT(config, "mdin", midiin_slot, "midiin").rxd_handler().set(FUNC(ymtx81z_state::midi_rx_r)); + + auto &mdout(MIDI_PORT(config, "mdout", midiout_slot, "midiout")); + m_maincpu->out_ser_tx_cb().set(mdout, FUNC(midi_port_device::write_txd)); screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_LCD)); screen.set_refresh_hz(60);