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tx81z: hook up MIDI I/O [R. Belmont]

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This commit is contained in:
arbee 2021-04-27 15:40:59 -04:00
parent e9e66e0224
commit eba9f9ee84
1 changed files with 26 additions and 2 deletions
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28
src/mame/drivers/ymtx81z.cpp
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@ -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<hd6303x_cpu_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);