mirror of
https://github.com/holub/mame
synced 2025-04-23 08:49:55 +03:00
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)
This commit is contained in:
Patrick Mackinlay
parent
d54e5e79b2
commit
0835904cd8
@ -4,13 +4,41 @@
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Skeleton driver for E-mu Emulator Three (EIII) synthesizer.
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WIP
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- hangs "checking floppy", probably ns32016 cpu bug
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- debug port should activate on NMI
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***********************************************************************************************************************************/
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#include "emu.h"
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#include "cpu/ns32000/ns32000.h"
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// various hardware
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#include "machine/pit8253.h"
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#include "machine/wd_fdc.h"
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#include "machine/z80scc.h"
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#include "machine/ncr5380n.h"
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#include "machine/6850acia.h"
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#include "machine/clock.h"
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// busses and connectors
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#include "machine/nscsi_bus.h"
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#include "bus/nscsi/hd.h"
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#include "bus/rs232/rs232.h"
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#include "bus/rs232/terminal.h"
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#include "imagedev/floppy.h"
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#include "formats/pc_dsk.h"
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// video
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#include "video/hd44780.h"
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#include "emupal.h"
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#include "screen.h"
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#define VERBOSE 0
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#include "logmacro.h"
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class emu3_state : public driver_device
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{
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@ -18,42 +46,151 @@ public:
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emu3_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_lcdc(*this, "lcdc")
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, m_fdc(*this, "fdc")
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, m_fdd(*this, "fdc:0:35dd")
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, m_hdc(*this, "scsi:7:ncr5380")
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, m_pit(*this, "pit")
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, m_scc(*this, "scc")
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, m_ddt(*this, "ddt")
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, m_ddt_port(*this, "ddt_port")
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, m_led(*this, "led%u", 0U)
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{
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}
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void emu3(machine_config &config);
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void emax2(machine_config &config);
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protected:
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virtual void machine_start() override;
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private:
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void emu3_map(address_map &map);
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void emax2_map(address_map &map);
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void palette_init(palette_device &palette);
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required_device<cpu_device> m_maincpu;
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required_device<hd44780_device> m_lcdc;
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required_device<wd1772_device> m_fdc;
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required_device<floppy_image_device> m_fdd;
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required_device<ncr5380n_device> m_hdc;
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required_device<pit8254_device> m_pit;
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required_device<z80scc_device> m_scc;
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optional_device<acia6850_device> m_ddt;
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optional_device<rs232_port_device> m_ddt_port;
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output_finder<17> m_led;
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enum irq_number : unsigned
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{
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SCNINT = 0, // scanner interrupt (active low)
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SCCINT = 1, // serial controller interrupt (active low)
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FDCINT = 2, // flopper disk controller interrupt (active high)
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STINT = 3, // software timer interrupt (active low)
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TGINT = 4, // transient generator interrupt (active high)
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HDINT = 5, // hard disk interrupt (active high)
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// unused (tied high)
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// unused (tied low)
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};
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enum misc_latch : u8
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{
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MISC_MET = 0, // metronome?
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MISC_MIDIOF = 1, // MIDI/RS422 select (+MIDIOF)
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MISC_SCNDATA = 2, // scanner cpu serial data (+SCNDATA)
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MISC_SCNCLK = 3, // scanner cpu serial clock (+SCNCLK)
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MISC_SIDE = 4, // floppy disk side select (-SIDE)
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MISC_MTR = 5, // floppy disk motor control (-MTR)
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MISC_SYNCON = 6, // ext. sync on (+SYNCON)
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MISC_LED = 7, // front panel Erase LED (CN6 60)
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};
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template <irq_number IRQ> void irq_w(int state)
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{
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if (state)
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m_irq_latch |= 1U << IRQ;
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else
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m_irq_latch &= ~(1U << IRQ);
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bool const irq_state = (m_irq_latch & 0x34) || (~m_irq_latch & 0x0b);
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if (irq_state != m_irq_state)
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{
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m_irq_state = irq_state;
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m_maincpu->set_input_line(INPUT_LINE_IRQ0, m_irq_state);
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}
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}
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u8 m_irq_latch;
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bool m_irq_state;
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};
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void emu3_state::machine_start()
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{
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m_led.resolve();
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m_irq_latch = 0x4b;
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m_irq_state = false;
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}
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void emu3_state::emu3_map(address_map &map)
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{
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map(0x000000, 0x007fff).rom().region("bootprom", 0);
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map(0x008000, 0x027fff).ram();
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map(0x050000, 0x050007).w("fdc", FUNC(wd1772_device::write)).umask16(0x00ff);
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map(0x050008, 0x05000f).r("fdc", FUNC(wd1772_device::read)).umask16(0x00ff);
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//map(0x300000, 0x30000f).rw("hdc", FUNC(ncr5380n_device::read), FUNC(ncr5830n_device::write)).umask16(0x00ff);
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map(0x390000, 0x390007).rw("timer", FUNC(pit8254_device::read), FUNC(pit8254_device::write)).umask16(0x00ff);
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map(0x300000, 0x30000f).rw(m_hdc, FUNC(ncr5380n_device::read), FUNC(ncr5380n_device::write)).umask16(0x00ff);
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map(0x390000, 0x390007).rw(m_pit, FUNC(pit8254_device::read), FUNC(pit8254_device::write)).umask16(0x00ff);
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map(0x400000, 0xbfffff).ram();
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map(0xc00000, 0xc00000).lw8([this](u8 data) { irq_w<STINT>(1); }, "stint_w");
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map(0xc40000, 0xc40000).lw8([this](u8 data) { irq_w<TGINT>(0); }, "tgint_w");
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map(0xd70000, 0xd70000).lw8(
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[this](u8 data)
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{
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m_fdd->ss_w(BIT(data, MISC_SIDE));
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m_fdd->mon_w(BIT(data, MISC_MTR));
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m_led[16] = BIT(data, MISC_LED);
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}, "misc_w");
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map(0xdb0000, 0xdb0001).lw16(
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[this](u16 data)
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{
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for (unsigned i = 0; i < 16; i++)
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m_led[i] = BIT(data, i);
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}, "led_w");
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map(0xeb0000, 0xeb0000).w(m_lcdc, FUNC(hd44780_device::control_w));
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map(0xeb0002, 0xeb0002).r(m_lcdc, FUNC(hd44780_device::control_r));
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map(0xeb0004, 0xeb0004).w(m_lcdc, FUNC(hd44780_device::data_w));
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map(0xeb0006, 0xeb0006).r(m_lcdc, FUNC(hd44780_device::data_r));
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map(0xef0001, 0xef0001).w(m_ddt, FUNC(acia6850_device::control_w));
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map(0xef0003, 0xef0003).r(m_ddt, FUNC(acia6850_device::status_r));
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map(0xef0005, 0xef0005).w(m_ddt, FUNC(acia6850_device::data_w));
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map(0xef0007, 0xef0007).r(m_ddt, FUNC(acia6850_device::data_r));
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map(0xf50000, 0xf50007).w(m_fdc, FUNC(wd1772_device::write)).umask16(0x00ff);
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map(0xf50008, 0xf5000f).r(m_fdc, FUNC(wd1772_device::read)).umask16(0x00ff);
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map(0xfffe00, 0xfffe00).lr8([this]() { return m_irq_latch; }, "irq_latch_r");
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}
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void emu3_state::emax2_map(address_map &map)
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void emu3_state::palette_init(palette_device &palette)
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{
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map(0x000000, 0x003fff).rom().region("bootprom", 0);
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palette.set_pen_color(0, rgb_t::white());
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palette.set_pen_color(1, rgb_t::black());
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}
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static void emu_scsi_devices(device_slot_interface &device)
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{
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device.option_add("harddisk", NSCSI_HARDDISK);
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}
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static INPUT_PORTS_START(emu3)
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INPUT_PORTS_END
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static void emu3_floppies(device_slot_interface &device)
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{
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device.option_add("35dd", FLOPPY_35_DD);
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}
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static INPUT_PORTS_START(emax2)
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INPUT_PORTS_END
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static void emu3_rs232(device_slot_interface &device)
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{
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device.option_add("terminal", SERIAL_TERMINAL);
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}
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void emu3_state::emu3(machine_config &config)
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{
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@ -64,24 +201,70 @@ void emu3_state::emu3(machine_config &config)
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//R6500_11(config, "scannercpu", 16_MHz_XTAL / 4);
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WD1772(config, "fdc", 16_MHz_XTAL / 2);
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WD1772(config, m_fdc, 16_MHz_XTAL / 2);
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m_fdc->intrq_wr_callback().set(*this, FUNC(emu3_state::irq_w<FDCINT>));
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m_fdc->set_disable_motor_control(true);
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m_fdc->sso_wr_callback().set([this](int state) {});
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m_fdc->dden_w(0);
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pit8254_device &pit(PIT8254(config, "timer")); // 8254-2
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pit.set_clk<0>(20_MHz_XTAL / 2);
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pit.set_clk<1>(16_MHz_XTAL / 16);
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FLOPPY_CONNECTOR(config, "fdc:0", emu3_floppies, "35dd", floppy_image_device::default_floppy_formats);
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//NCR5380N(config, "hdc");
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PIT8254(config, m_pit); // 8254-2
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m_pit->set_clk<0>(20_MHz_XTAL / 2);
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m_pit->set_clk<1>(16_MHz_XTAL / 16);
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m_pit->out_handler<0>().set(*this, FUNC(emu3_state::irq_w<TGINT>));
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//pit.out_handler<1>().set(); // -SWTIME
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//pit.out_handler<2>().set(); // -SMPTIME
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SCC85230(config, "uart", 16_MHz_XTAL / 4);
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// scsi bus and devices
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NSCSI_BUS(config, "scsi");
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NSCSI_CONNECTOR(config, "scsi:0", emu_scsi_devices, "harddisk");
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NSCSI_CONNECTOR(config, "scsi:1", emu_scsi_devices, nullptr);
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NSCSI_CONNECTOR(config, "scsi:2", emu_scsi_devices, nullptr);
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NSCSI_CONNECTOR(config, "scsi:3", emu_scsi_devices, nullptr);
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NSCSI_CONNECTOR(config, "scsi:4", emu_scsi_devices, nullptr);
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NSCSI_CONNECTOR(config, "scsi:5", emu_scsi_devices, nullptr);
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NSCSI_CONNECTOR(config, "scsi:6", emu_scsi_devices, nullptr);
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// scsi host adapter
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NSCSI_CONNECTOR(config, "scsi:7").option_set("ncr5380", NCR5380N).machine_config(
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[this](device_t *device)
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{
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ncr5380n_device &adapter = downcast<ncr5380n_device &>(*device);
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adapter.irq_handler().set(*this, FUNC(emu3_state::irq_w<HDINT>));
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});
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SCC85230(config, m_scc, 16_MHz_XTAL / 4);
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m_scc->out_int_callback().set(*this, FUNC(emu3_state::irq_w<SCCINT>)).invert();
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HD44780(config, m_lcdc, 0);
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m_lcdc->set_lcd_size(4, 20);
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PALETTE(config, "palette", FUNC(emu3_state::palette_init), 2);
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screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_LCD));
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screen.set_refresh_hz(60); // no idea
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screen.set_screen_update(m_lcdc, FUNC(hd44780_device::screen_update));
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screen.set_size(20 * 6, 4 * 9); // 20x4 columns/rows, 5x8 character cells
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screen.set_visarea_full();
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screen.set_palette("palette");
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// debug board
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ACIA6850(config, m_ddt);
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clock_device &ddt_clock(CLOCK(config, "ddt_clock", 10_MHz_XTAL / 64));
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ddt_clock.signal_handler().set(m_ddt, FUNC(acia6850_device::write_txc));
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ddt_clock.signal_handler().append(m_ddt, FUNC(acia6850_device::write_rxc));
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RS232_PORT(config, m_ddt_port, emu3_rs232, nullptr);
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m_ddt_port->rxd_handler().set(m_ddt, FUNC(acia6850_device::write_rxd)).invert();
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m_ddt->rts_handler().set(m_ddt_port, FUNC(rs232_port_device::write_rts)).invert();
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m_ddt->txd_handler().set(m_ddt_port, FUNC(rs232_port_device::write_txd)).invert();
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}
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void emu3_state::emax2(machine_config &config)
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{
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NS32016(config, m_maincpu, 20_MHz_XTAL / 2); // NS32CG16V-10 (EMAX I uses a NS32008D-8)
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m_maincpu->set_addrmap(AS_PROGRAM, &emu3_state::emax2_map);
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// TODO: add NMC93C06N EEPROM & other unknown peripherals
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}
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static INPUT_PORTS_START(emu3)
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INPUT_PORTS_END
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ROM_START(emu3)
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ROM_REGION16_LE(0x8000, "bootprom", 0)
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@ -92,6 +275,39 @@ ROM_START(emu3)
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ROM_LOAD("im368.ic31", 0x000, 0xc00, NO_DUMP)
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ROM_END
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class emax2_state : public driver_device
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{
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public:
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emax2_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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{
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}
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void emax2(machine_config &config);
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private:
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void emax2_map(address_map &map);
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required_device<cpu_device> m_maincpu;
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};
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void emax2_state::emax2_map(address_map &map)
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{
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map(0x000000, 0x003fff).rom().region("bootprom", 0);
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}
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void emax2_state::emax2(machine_config &config)
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{
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NS32016(config, m_maincpu, 20_MHz_XTAL / 2); // NS32CG16V-10 (EMAX I uses a NS32008D-8)
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m_maincpu->set_addrmap(AS_PROGRAM, &emax2_state::emax2_map);
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// TODO: add NMC93C06N EEPROM & other unknown peripherals
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}
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static INPUT_PORTS_START(emax2)
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INPUT_PORTS_END
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ROM_START(emax2)
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ROM_REGION16_LE(0x4000, "bootprom", 0)
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ROM_LOAD16_BYTE("ip43aemu_3891.ic20", 0x0000, 0x2000, CRC(51fdccb8) SHA1(0cab6540ed5d03ba202569b8730e0ec6dce1a477)) // Am27C64-250DC
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@ -99,4 +315,4 @@ ROM_START(emax2)
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ROM_END
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SYST(1987, emu3, 0, 0, emu3, emu3, emu3_state, empty_init, "E-mu Systems", "Emulator Three Digital Sound Production System", MACHINE_IS_SKELETON)
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SYST(1989, emax2, 0, 0, emax2, emax2, emu3_state, empty_init, "E-mu Systems", "EMAX II 16-Bit Digital Sound System", MACHINE_IS_SKELETON)
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SYST(1989, emax2, 0, 0, emax2, emax2, emax2_state, empty_init, "E-mu Systems", "EMAX II 16-Bit Digital Sound System", MACHINE_IS_SKELETON)
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