From 0835904cd8e0eaf03babc6e17be2b7660ca867c6 Mon Sep 17 00:00:00 2001 From: Patrick Mackinlay Date: Tue, 8 Sep 2020 19:19:13 +0700 Subject: [PATCH] emu3: wip checkpoint * hooked up the lcd controller * hooked up some interrupts * partially hooked up the debug board * corrected some address mappings (documentation appears incorrect) * separated emu3 and emax2 driver state (for now) --- src/mame/drivers/emu3.cpp | 268 ++++++++++++++++++++++++++++++++++---- 1 file changed, 242 insertions(+), 26 deletions(-) diff --git a/src/mame/drivers/emu3.cpp b/src/mame/drivers/emu3.cpp index 6827dac519e..69c9739d81b 100644 --- a/src/mame/drivers/emu3.cpp +++ b/src/mame/drivers/emu3.cpp @@ -4,13 +4,41 @@ Skeleton driver for E-mu Emulator Three (EIII) synthesizer. + + WIP + - hangs "checking floppy", probably ns32016 cpu bug + - debug port should activate on NMI + ***********************************************************************************************************************************/ #include "emu.h" + #include "cpu/ns32000/ns32000.h" + +// various hardware #include "machine/pit8253.h" #include "machine/wd_fdc.h" #include "machine/z80scc.h" +#include "machine/ncr5380n.h" +#include "machine/6850acia.h" +#include "machine/clock.h" + +// busses and connectors +#include "machine/nscsi_bus.h" +#include "bus/nscsi/hd.h" +#include "bus/rs232/rs232.h" +#include "bus/rs232/terminal.h" + +#include "imagedev/floppy.h" +#include "formats/pc_dsk.h" + +// video +#include "video/hd44780.h" +#include "emupal.h" +#include "screen.h" + +#define VERBOSE 0 +#include "logmacro.h" class emu3_state : public driver_device { @@ -18,42 +46,151 @@ public: emu3_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") + , m_lcdc(*this, "lcdc") + , m_fdc(*this, "fdc") + , m_fdd(*this, "fdc:0:35dd") + , m_hdc(*this, "scsi:7:ncr5380") + , m_pit(*this, "pit") + , m_scc(*this, "scc") + , m_ddt(*this, "ddt") + , m_ddt_port(*this, "ddt_port") + , m_led(*this, "led%u", 0U) { } void emu3(machine_config &config); - void emax2(machine_config &config); + +protected: + virtual void machine_start() override; private: void emu3_map(address_map &map); - void emax2_map(address_map &map); + + void palette_init(palette_device &palette); required_device m_maincpu; + required_device m_lcdc; + required_device m_fdc; + required_device m_fdd; + required_device m_hdc; + required_device m_pit; + required_device m_scc; + optional_device m_ddt; + optional_device m_ddt_port; + + output_finder<17> m_led; + + enum irq_number : unsigned + { + SCNINT = 0, // scanner interrupt (active low) + SCCINT = 1, // serial controller interrupt (active low) + FDCINT = 2, // flopper disk controller interrupt (active high) + STINT = 3, // software timer interrupt (active low) + TGINT = 4, // transient generator interrupt (active high) + HDINT = 5, // hard disk interrupt (active high) + // unused (tied high) + // unused (tied low) + }; + + enum misc_latch : u8 + { + MISC_MET = 0, // metronome? + MISC_MIDIOF = 1, // MIDI/RS422 select (+MIDIOF) + MISC_SCNDATA = 2, // scanner cpu serial data (+SCNDATA) + MISC_SCNCLK = 3, // scanner cpu serial clock (+SCNCLK) + MISC_SIDE = 4, // floppy disk side select (-SIDE) + MISC_MTR = 5, // floppy disk motor control (-MTR) + MISC_SYNCON = 6, // ext. sync on (+SYNCON) + MISC_LED = 7, // front panel Erase LED (CN6 60) + }; + + template void irq_w(int state) + { + if (state) + m_irq_latch |= 1U << IRQ; + else + m_irq_latch &= ~(1U << IRQ); + + bool const irq_state = (m_irq_latch & 0x34) || (~m_irq_latch & 0x0b); + if (irq_state != m_irq_state) + { + m_irq_state = irq_state; + m_maincpu->set_input_line(INPUT_LINE_IRQ0, m_irq_state); + } + } + + u8 m_irq_latch; + bool m_irq_state; }; +void emu3_state::machine_start() +{ + m_led.resolve(); + + m_irq_latch = 0x4b; + m_irq_state = false; +} void emu3_state::emu3_map(address_map &map) { map(0x000000, 0x007fff).rom().region("bootprom", 0); map(0x008000, 0x027fff).ram(); - map(0x050000, 0x050007).w("fdc", FUNC(wd1772_device::write)).umask16(0x00ff); - map(0x050008, 0x05000f).r("fdc", FUNC(wd1772_device::read)).umask16(0x00ff); - //map(0x300000, 0x30000f).rw("hdc", FUNC(ncr5380n_device::read), FUNC(ncr5830n_device::write)).umask16(0x00ff); - map(0x390000, 0x390007).rw("timer", FUNC(pit8254_device::read), FUNC(pit8254_device::write)).umask16(0x00ff); + map(0x300000, 0x30000f).rw(m_hdc, FUNC(ncr5380n_device::read), FUNC(ncr5380n_device::write)).umask16(0x00ff); + map(0x390000, 0x390007).rw(m_pit, FUNC(pit8254_device::read), FUNC(pit8254_device::write)).umask16(0x00ff); map(0x400000, 0xbfffff).ram(); + + map(0xc00000, 0xc00000).lw8([this](u8 data) { irq_w(1); }, "stint_w"); + map(0xc40000, 0xc40000).lw8([this](u8 data) { irq_w(0); }, "tgint_w"); + map(0xd70000, 0xd70000).lw8( + [this](u8 data) + { + m_fdd->ss_w(BIT(data, MISC_SIDE)); + m_fdd->mon_w(BIT(data, MISC_MTR)); + m_led[16] = BIT(data, MISC_LED); + }, "misc_w"); + map(0xdb0000, 0xdb0001).lw16( + [this](u16 data) + { + for (unsigned i = 0; i < 16; i++) + m_led[i] = BIT(data, i); + }, "led_w"); + + map(0xeb0000, 0xeb0000).w(m_lcdc, FUNC(hd44780_device::control_w)); + map(0xeb0002, 0xeb0002).r(m_lcdc, FUNC(hd44780_device::control_r)); + map(0xeb0004, 0xeb0004).w(m_lcdc, FUNC(hd44780_device::data_w)); + map(0xeb0006, 0xeb0006).r(m_lcdc, FUNC(hd44780_device::data_r)); + + map(0xef0001, 0xef0001).w(m_ddt, FUNC(acia6850_device::control_w)); + map(0xef0003, 0xef0003).r(m_ddt, FUNC(acia6850_device::status_r)); + map(0xef0005, 0xef0005).w(m_ddt, FUNC(acia6850_device::data_w)); + map(0xef0007, 0xef0007).r(m_ddt, FUNC(acia6850_device::data_r)); + + map(0xf50000, 0xf50007).w(m_fdc, FUNC(wd1772_device::write)).umask16(0x00ff); + map(0xf50008, 0xf5000f).r(m_fdc, FUNC(wd1772_device::read)).umask16(0x00ff); + + map(0xfffe00, 0xfffe00).lr8([this]() { return m_irq_latch; }, "irq_latch_r"); } -void emu3_state::emax2_map(address_map &map) +void emu3_state::palette_init(palette_device &palette) { - map(0x000000, 0x003fff).rom().region("bootprom", 0); + palette.set_pen_color(0, rgb_t::white()); + palette.set_pen_color(1, rgb_t::black()); } +static void emu_scsi_devices(device_slot_interface &device) +{ + device.option_add("harddisk", NSCSI_HARDDISK); +} -static INPUT_PORTS_START(emu3) -INPUT_PORTS_END +static void emu3_floppies(device_slot_interface &device) +{ + device.option_add("35dd", FLOPPY_35_DD); +} -static INPUT_PORTS_START(emax2) -INPUT_PORTS_END +static void emu3_rs232(device_slot_interface &device) +{ + device.option_add("terminal", SERIAL_TERMINAL); +} void emu3_state::emu3(machine_config &config) { @@ -64,24 +201,70 @@ void emu3_state::emu3(machine_config &config) //R6500_11(config, "scannercpu", 16_MHz_XTAL / 4); - WD1772(config, "fdc", 16_MHz_XTAL / 2); + WD1772(config, m_fdc, 16_MHz_XTAL / 2); + m_fdc->intrq_wr_callback().set(*this, FUNC(emu3_state::irq_w)); + m_fdc->set_disable_motor_control(true); + m_fdc->sso_wr_callback().set([this](int state) {}); + m_fdc->dden_w(0); - pit8254_device &pit(PIT8254(config, "timer")); // 8254-2 - pit.set_clk<0>(20_MHz_XTAL / 2); - pit.set_clk<1>(16_MHz_XTAL / 16); + FLOPPY_CONNECTOR(config, "fdc:0", emu3_floppies, "35dd", floppy_image_device::default_floppy_formats); - //NCR5380N(config, "hdc"); + PIT8254(config, m_pit); // 8254-2 + m_pit->set_clk<0>(20_MHz_XTAL / 2); + m_pit->set_clk<1>(16_MHz_XTAL / 16); + m_pit->out_handler<0>().set(*this, FUNC(emu3_state::irq_w)); + //pit.out_handler<1>().set(); // -SWTIME + //pit.out_handler<2>().set(); // -SMPTIME - SCC85230(config, "uart", 16_MHz_XTAL / 4); + // scsi bus and devices + NSCSI_BUS(config, "scsi"); + + NSCSI_CONNECTOR(config, "scsi:0", emu_scsi_devices, "harddisk"); + NSCSI_CONNECTOR(config, "scsi:1", emu_scsi_devices, nullptr); + NSCSI_CONNECTOR(config, "scsi:2", emu_scsi_devices, nullptr); + NSCSI_CONNECTOR(config, "scsi:3", emu_scsi_devices, nullptr); + NSCSI_CONNECTOR(config, "scsi:4", emu_scsi_devices, nullptr); + NSCSI_CONNECTOR(config, "scsi:5", emu_scsi_devices, nullptr); + NSCSI_CONNECTOR(config, "scsi:6", emu_scsi_devices, nullptr); + + // scsi host adapter + NSCSI_CONNECTOR(config, "scsi:7").option_set("ncr5380", NCR5380N).machine_config( + [this](device_t *device) + { + ncr5380n_device &adapter = downcast(*device); + + adapter.irq_handler().set(*this, FUNC(emu3_state::irq_w)); + }); + + SCC85230(config, m_scc, 16_MHz_XTAL / 4); + m_scc->out_int_callback().set(*this, FUNC(emu3_state::irq_w)).invert(); + + HD44780(config, m_lcdc, 0); + m_lcdc->set_lcd_size(4, 20); + + PALETTE(config, "palette", FUNC(emu3_state::palette_init), 2); + + screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_LCD)); + screen.set_refresh_hz(60); // no idea + screen.set_screen_update(m_lcdc, FUNC(hd44780_device::screen_update)); + screen.set_size(20 * 6, 4 * 9); // 20x4 columns/rows, 5x8 character cells + screen.set_visarea_full(); + screen.set_palette("palette"); + + // debug board + ACIA6850(config, m_ddt); + clock_device &ddt_clock(CLOCK(config, "ddt_clock", 10_MHz_XTAL / 64)); + ddt_clock.signal_handler().set(m_ddt, FUNC(acia6850_device::write_txc)); + ddt_clock.signal_handler().append(m_ddt, FUNC(acia6850_device::write_rxc)); + + RS232_PORT(config, m_ddt_port, emu3_rs232, nullptr); + m_ddt_port->rxd_handler().set(m_ddt, FUNC(acia6850_device::write_rxd)).invert(); + m_ddt->rts_handler().set(m_ddt_port, FUNC(rs232_port_device::write_rts)).invert(); + m_ddt->txd_handler().set(m_ddt_port, FUNC(rs232_port_device::write_txd)).invert(); } -void emu3_state::emax2(machine_config &config) -{ - NS32016(config, m_maincpu, 20_MHz_XTAL / 2); // NS32CG16V-10 (EMAX I uses a NS32008D-8) - m_maincpu->set_addrmap(AS_PROGRAM, &emu3_state::emax2_map); - - // TODO: add NMC93C06N EEPROM & other unknown peripherals -} +static INPUT_PORTS_START(emu3) +INPUT_PORTS_END ROM_START(emu3) ROM_REGION16_LE(0x8000, "bootprom", 0) @@ -92,6 +275,39 @@ ROM_START(emu3) ROM_LOAD("im368.ic31", 0x000, 0xc00, NO_DUMP) ROM_END +class emax2_state : public driver_device +{ +public: + emax2_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag) + , m_maincpu(*this, "maincpu") + { + } + + void emax2(machine_config &config); + +private: + void emax2_map(address_map &map); + + required_device m_maincpu; +}; + +void emax2_state::emax2_map(address_map &map) +{ + map(0x000000, 0x003fff).rom().region("bootprom", 0); +} + +void emax2_state::emax2(machine_config &config) +{ + NS32016(config, m_maincpu, 20_MHz_XTAL / 2); // NS32CG16V-10 (EMAX I uses a NS32008D-8) + m_maincpu->set_addrmap(AS_PROGRAM, &emax2_state::emax2_map); + + // TODO: add NMC93C06N EEPROM & other unknown peripherals +} + +static INPUT_PORTS_START(emax2) +INPUT_PORTS_END + ROM_START(emax2) ROM_REGION16_LE(0x4000, "bootprom", 0) ROM_LOAD16_BYTE("ip43aemu_3891.ic20", 0x0000, 0x2000, CRC(51fdccb8) SHA1(0cab6540ed5d03ba202569b8730e0ec6dce1a477)) // Am27C64-250DC @@ -99,4 +315,4 @@ ROM_START(emax2) ROM_END SYST(1987, emu3, 0, 0, emu3, emu3, emu3_state, empty_init, "E-mu Systems", "Emulator Three Digital Sound Production System", MACHINE_IS_SKELETON) -SYST(1989, emax2, 0, 0, emax2, emax2, emu3_state, empty_init, "E-mu Systems", "EMAX II 16-Bit Digital Sound System", MACHINE_IS_SKELETON) +SYST(1989, emax2, 0, 0, emax2, emax2, emax2_state, empty_init, "E-mu Systems", "EMAX II 16-Bit Digital Sound System", MACHINE_IS_SKELETON)