// license:BSD-3-Clause // copyright-holders:Vas Crabb /*************************************************************************** SITCOM (known as Sitcom, Sitcom85, Sitcom8085) 25/09/2011 Driver [Robbbert] http://www.sitcom.tk/ http://www.sbprojects.net/projects/izabella/html/sitcom_.html The display consists of a LED connected to SOD, and a pair of DL1414 intelligent alphanumeric displays. The idea of this device is that you write a 8085 program with an assembler on your PC. You then compile it, and then send it to the SITCOM via a serial cable. The program then (hopefully) runs on the SITCOM. With the 8255 expansion, you could wire up input devices or other hardware for your program to use. The SOD LED blinks slowly while waiting; stays on while downloading; and blinks quickly if an error occurs. After a successful upload, hit the Reset button to mirror RAM into the low 32kB of the address space in place of ROM and run the program. The null modem bitbanger should be configured for 9600 8N1 to upload a program. The data should be in Intel HEX format. ****************************************************************************/ #include "emu.h" #include "bus/rs232/rs232.h" #include "cpu/i8085/i8085.h" #include "imagedev/bitbngr.h" #include "machine/clock.h" #include "machine/i8255.h" #include "video/dl1416.h" #include "softlist_dev.h" #include "sitcom.lh" #include "sitcomtmr.lh" #include namespace { class sitcom_state : public driver_device { public: sitcom_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_buttons(*this, "BUTTONS") , m_maincpu(*this, "maincpu") , m_digits(*this, "digit%u", 0U) , m_leds(*this, "p%c%u", unsigned('a'), 0U) , m_bootstrap(*this, "bootstrap") , m_rxd(true) { } void sitcom(machine_config &config); DECLARE_INPUT_CHANGED_MEMBER(update_buttons); protected: virtual void machine_start() override; virtual void machine_reset() override; virtual void update_ppi_pa(uint8_t data); virtual void update_ppi_pb(uint8_t data); void sitcom_mem(address_map &map); void sitcom_io(address_map &map); template void update_ds(offs_t offset, uint16_t data) { m_digits[(D << 2) | offset] = data; } DECLARE_WRITE_LINE_MEMBER(update_rxd) { m_rxd = bool(state); } DECLARE_READ_LINE_MEMBER(sid_line) { return m_rxd ? 1 : 0; } static void sitcom_null_modem(device_t *device) { device->subdevice("stream")->set_interface("rs232"); } required_ioport m_buttons; required_device m_maincpu; output_finder<15> m_digits; output_finder<2, 8> m_leds; memory_view m_bootstrap; bool m_rxd; }; class sitcom_timer_state : public sitcom_state { public: sitcom_timer_state(const machine_config &mconfig, device_type type, const char *tag) : sitcom_state(mconfig, type, tag) , m_speed(*this, "SPEED") , m_ppi(*this, "ppi") , m_ds2(*this, "ds2") , m_test_led(*this, "test_led") , m_dac(*this, "dac") , m_shutter_timer(nullptr) , m_shutter(false) , m_dac_cs(true) , m_dac_wr(true) { } DECLARE_READ_LINE_MEMBER(shutter_r); DECLARE_INPUT_CHANGED_MEMBER(update_shutter); DECLARE_INPUT_CHANGED_MEMBER(update_speed); void sitcomtmr(machine_config &config); protected: virtual void machine_start() override; virtual void machine_reset() override; virtual void update_ppi_pa(uint8_t data) override; virtual void update_ppi_pb(uint8_t data) override; TIMER_CALLBACK_MEMBER(shutter_tick); void update_dac(uint8_t value); required_ioport m_speed; required_device m_ppi; required_device m_ds2; output_finder<> m_test_led; output_finder<> m_dac; emu_timer *m_shutter_timer; bool m_shutter; bool m_dac_cs, m_dac_wr; }; void sitcom_state::sitcom_mem(address_map &map) { map.unmap_value_high(); map(0x0000, 0x7fff).mirror(0x8000).ram(); map(0x0000, 0x7fff).view(m_bootstrap); m_bootstrap[0](0x0000, 0x7fff).unmapw().rom().region("bootstrap", 0); } void sitcom_state::sitcom_io(address_map &map) { map.unmap_value_high(); map.global_mask(0xff); map(0x00, 0x03).mirror(0x1c).rw("ppi", FUNC(i8255_device::read), FUNC(i8255_device::write)); map(0xc0, 0xc3).mirror(0x1c).w("ds0", FUNC(dl1414_device::bus_w)); map(0xe0, 0xe3).mirror(0x1c).w("ds1", FUNC(dl1414_device::bus_w)); } INPUT_PORTS_START( sitcom ) PORT_START("BUTTONS") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_NAME("Boot") PORT_CHANGED_MEMBER(DEVICE_SELF, sitcom_state, update_buttons, 0) PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_NAME("Reset") PORT_CHANGED_MEMBER(DEVICE_SELF, sitcom_state, update_buttons, 0) PORT_START("PORTC") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("0") PORT_CODE(KEYCODE_0) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("1") PORT_CODE(KEYCODE_1) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("2") PORT_CODE(KEYCODE_2) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("3") PORT_CODE(KEYCODE_3) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("4") PORT_CODE(KEYCODE_4) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("5") PORT_CODE(KEYCODE_5) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("6") PORT_CODE(KEYCODE_6) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("7") PORT_CODE(KEYCODE_7) INPUT_PORTS_END INPUT_PORTS_START( sitcomtmr ) PORT_INCLUDE(sitcom) PORT_MODIFY("BUTTONS") PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_BUTTON5 ) PORT_NAME("Shutter") PORT_CHANGED_MEMBER(DEVICE_SELF, sitcom_timer_state, update_shutter, 0) PORT_MODIFY("PORTC") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_NAME("Grey") PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON4 ) PORT_NAME("Blue") PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_CUSTOM ) PORT_READ_LINE_DEVICE_MEMBER(DEVICE_SELF, sitcom_timer_state, shutter_r) PORT_BIT( 0xf8, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_START("SPEED") PORT_CONFNAME(0xff, 0x1e, "Shutter Speed") PORT_CHANGED_MEMBER(DEVICE_SELF, sitcom_timer_state, update_speed, 0) PORT_CONFSETTING(0x00, "B") PORT_CONFSETTING(0x01, "1") PORT_CONFSETTING(0x02, "1/2") PORT_CONFSETTING(0x04, "1/4") PORT_CONFSETTING(0x08, "1/8") PORT_CONFSETTING(0x0f, "1/15") PORT_CONFSETTING(0x1e, "1/30") PORT_CONFSETTING(0x3c, "1/60") PORT_CONFSETTING(0x7d, "1/125") INPUT_PORTS_END void sitcom_state::machine_start() { m_digits.resolve(); m_leds.resolve(); save_item(NAME(m_rxd)); m_rxd = true; } void sitcom_state::machine_reset() { m_bootstrap.select(0); } void sitcom_state::update_ppi_pa(uint8_t data) { for (int i = 0; 8 > i; ++i) m_leds[0][i] = BIT(data, i); } void sitcom_state::update_ppi_pb(uint8_t data) { for (int i = 0; 8 > i; ++i) m_leds[1][i] = BIT(data, i); } INPUT_CHANGED_MEMBER( sitcom_state::update_buttons ) { bool const boot(BIT(m_buttons->read(), 0)); bool const reset(BIT(m_buttons->read(), 1)); m_maincpu->set_input_line(INPUT_LINE_RESET, (boot || reset) ? ASSERT_LINE : CLEAR_LINE); if (boot) m_bootstrap.select(0); else if (reset) m_bootstrap.disable(); } void sitcom_timer_state::update_ppi_pa(uint8_t data) { if (!m_dac_cs && !m_dac_wr) update_dac(data); m_ds2->data_w(data & 0x7f); } void sitcom_timer_state::update_ppi_pb(uint8_t data) { if (!m_dac_cs && !BIT(data, 0)) update_dac(m_ppi->pa_r()); m_dac_wr = BIT(data, 0); m_dac_cs = BIT(data, 1); m_ds2->wr_w(BIT(data, 2)); m_ds2->addr_w(bitswap<2>(data, 3, 4)); m_test_led = BIT(data, 5); } READ_LINE_MEMBER( sitcom_timer_state::shutter_r ) { return m_shutter ? 0 : 1; } INPUT_CHANGED_MEMBER( sitcom_timer_state::update_shutter ) { ioport_value const speed(m_speed->read()); if (!speed) { m_shutter = bool(newval); } else if (!m_shutter && newval) { m_shutter = true; m_shutter_timer->adjust(attotime::from_hz(speed)); } } INPUT_CHANGED_MEMBER( sitcom_timer_state::update_speed ) { if (!newval) { m_shutter = bool(BIT(m_buttons->read(), 2)); } else if (!oldval) { m_shutter = false; } } TIMER_CALLBACK_MEMBER(sitcom_timer_state::shutter_tick) { m_shutter = false; } void sitcom_timer_state::machine_start() { sitcom_state::machine_start(); m_test_led.resolve(); m_dac.resolve(); m_shutter_timer = timer_alloc(FUNC(sitcom_timer_state::shutter_tick), this); save_item(NAME(m_shutter)); save_item(NAME(m_dac_cs)); save_item(NAME(m_dac_wr)); m_shutter = false; m_dac_cs = true; m_dac_wr = true; } void sitcom_timer_state::machine_reset() { sitcom_state::machine_reset(); } void sitcom_timer_state::update_dac(uint8_t value) { // supposed to be a DAC and an analog meter, but that's hard to do with internal layouts m_dac = value; constexpr u8 s_7seg[10] = { 0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07, 0x7f, 0x6f }; m_digits[12] = s_7seg[value % 10]; value /= 10; m_digits[13] = s_7seg[value % 10]; value /= 10; m_digits[14] = s_7seg[value % 10] | 0x80; } void sitcom_state::sitcom(machine_config &config) { // basic machine hardware I8085A(config, m_maincpu, 6.144_MHz_XTAL); // 3.072MHz can be used for an old slow 8085 m_maincpu->set_addrmap(AS_PROGRAM, &sitcom_state::sitcom_mem); m_maincpu->set_addrmap(AS_IO, &sitcom_state::sitcom_io); m_maincpu->in_sid_func().set(FUNC(sitcom_state::sid_line)); m_maincpu->out_sod_func().set_output("sod_led"); CLOCK(config, "100hz", 100).signal_handler().set_inputline("maincpu", I8085_RST75_LINE); i8255_device &ppi(I8255(config, "ppi")); ppi.out_pa_callback().set(FUNC(sitcom_state::update_ppi_pa)); ppi.out_pb_callback().set(FUNC(sitcom_state::update_ppi_pb)); ppi.in_pc_callback().set_ioport("PORTC"); // video hardware DL1414T(config, "ds0", u32(0)).update().set(FUNC(sitcom_state::update_ds<0>)); // left display DL1414T(config, "ds1", u32(0)).update().set(FUNC(sitcom_state::update_ds<1>)); // right display // host interface rs232_port_device &rs232(RS232_PORT(config, "rs232", default_rs232_devices, "null_modem")); rs232.rxd_handler().set(FUNC(sitcom_state::update_rxd)); rs232.set_option_machine_config("null_modem", sitcom_null_modem); SOFTWARE_LIST(config, "bitb_list").set_original("sitcom"); config.set_default_layout(layout_sitcom); } void sitcom_timer_state::sitcomtmr(machine_config &config) { sitcom(config); DL1414T(config, m_ds2, u32(0)).update().set(FUNC(sitcom_timer_state::update_ds<2>)); // remote display config.set_default_layout(layout_sitcomtmr); } ROM_START( sitcom ) ROM_REGION( 0x8000, "bootstrap", ROMREGION_ERASEFF ) ROM_LOAD( "boot8085.bin", 0x0000, 0x06b8, CRC(1b5e3310) SHA1(3323b65f0c10b7ab6bb75ec824e6d5fb643693a8) ) ROM_END ROM_START( sitcomtmr ) ROM_REGION( 0x8000, "bootstrap", ROMREGION_ERASEFF ) ROM_LOAD( "boot8085.bin", 0x0000, 0x06b8, CRC(1b5e3310) SHA1(3323b65f0c10b7ab6bb75ec824e6d5fb643693a8) ) ROM_END } // anonymous namespace /* Driver */ /* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */ COMP( 2002, sitcom, 0, 0, sitcom, sitcom, sitcom_state, empty_init, "San Bergmans & Izabella Malcolm", "SITCOM", MACHINE_SUPPORTS_SAVE | MACHINE_NO_SOUND_HW) COMP( 2002, sitcomtmr, sitcom, 0, sitcomtmr, sitcomtmr, sitcom_timer_state, empty_init, "San Bergmans & Izabella Malcolm", "SITCOM Timer", MACHINE_SUPPORTS_SAVE | MACHINE_NO_SOUND_HW)