// license:BSD-3-Clause // copyright-holders:Curt Coder /*************************************************************************** Netronics Elf II ****************************************************************************/ /* TODO: - proper layout */ #include "emu.h" #include "includes/elf.h" #include "screen.h" #include "speaker.h" #include "elf2.lh" #define RUN \ BIT(m_special->read(), 0) #define LOAD \ BIT(m_special->read(), 1) #define MEMORY_PROTECT \ BIT(m_special->read(), 2) #define INPUT \ BIT(m_special->read(), 3) /* Read/Write Handlers */ uint8_t elf2_state::dispon_r() { m_vdc->disp_on_w(1); m_vdc->disp_on_w(0); return 0xff; } uint8_t elf2_state::data_r() { return m_data; } void elf2_state::data_w(uint8_t data) { m_led_l->a_w(data & 0x0f); m_led_h->a_w(data >> 4); } void elf2_state::memory_w(offs_t offset, uint8_t data) { if (LOAD) { if (MEMORY_PROTECT) { /* latch data from memory */ data = m_ram->pointer()[offset]; } else { /* write latched data to memory */ m_ram->pointer()[offset] = data; } /* write data to 7 segment displays */ m_led_l->a_w(data & 0x0f); m_led_h->a_w(data >> 4); } } /* Memory Maps */ void elf2_state::elf2_mem(address_map &map) { map.unmap_value_high(); map.global_mask(0xff); map(0x0000, 0x00ff).bankrw("bank1"); } void elf2_state::elf2_io(address_map &map) { map.unmap_value_high(); map(0x01, 0x01).r(FUNC(elf2_state::dispon_r)); map(0x04, 0x04).rw(FUNC(elf2_state::data_r), FUNC(elf2_state::data_w)); } /* Input Ports */ INPUT_CHANGED_MEMBER( elf2_state::input_w ) { if (newval) { /* assert DMAIN */ m_maincpu->set_input_line(COSMAC_INPUT_LINE_DMAIN, ASSERT_LINE); } } static INPUT_PORTS_START( elf2 ) PORT_START("X1") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_START("X2") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_START("X3") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_START("X4") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_START("SPECIAL") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("RUN") PORT_CODE(KEYCODE_R) PORT_TOGGLE PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("LOAD") PORT_CODE(KEYCODE_L) PORT_TOGGLE PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("M/P") PORT_CODE(KEYCODE_M) PORT_TOGGLE PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("INPUT") PORT_CODE(KEYCODE_ENTER) PORT_CHANGED_MEMBER(DEVICE_SELF, elf2_state, input_w, 0) INPUT_PORTS_END /* CDP1802 Configuration */ READ_LINE_MEMBER( elf2_state::wait_r ) { return LOAD; } READ_LINE_MEMBER( elf2_state::clear_r ) { return RUN; } READ_LINE_MEMBER( elf2_state::ef4_r ) { return INPUT; } WRITE_LINE_MEMBER( elf2_state::q_w ) { m_led = state ? 1 : 0; } uint8_t elf2_state::dma_r() { return m_data; } void elf2_state::sc_w(uint8_t data) { switch (data) { case COSMAC_STATE_CODE_S2_DMA: case COSMAC_STATE_CODE_S3_INTERRUPT: /* clear DMAIN */ m_maincpu->set_input_line(COSMAC_INPUT_LINE_DMAIN, CLEAR_LINE); break; default: break; } } /* MM74C923 Interface */ WRITE_LINE_MEMBER( elf2_state::da_w ) { if (state) { /* shift keyboard data to latch */ m_data <<= 4; m_data |= m_kb->read() & 0x0f; if (LOAD) { /* write data to 7 segment displays */ m_led_l->a_w(m_data & 0x0f); m_led_h->a_w(m_data >> 4); } } } /* Machine Initialization */ void elf2_state::machine_start() { address_space &program = m_maincpu->space(AS_PROGRAM); m_led.resolve(); /* initialize LED displays */ m_7segs.resolve(); m_led_l->rbi_w(1); m_led_h->rbi_w(1); /* setup memory banking */ program.install_read_bank(0x0000, 0x00ff, "bank1"); program.install_write_handler(0x0000, 0x00ff, write8sm_delegate(*this, FUNC(elf2_state::memory_w))); membank("bank1")->configure_entry(0, m_ram->pointer()); membank("bank1")->set_entry(0); /* register for state saving */ save_item(NAME(m_data)); } /* Machine Driver */ QUICKLOAD_LOAD_MEMBER(elf2_state::quickload_cb) { int size = image.length(); if (size > m_ram->size()) { return image_init_result::FAIL; } image.fread(m_ram->pointer(), size); return image_init_result::PASS; } void elf2_state::elf2(machine_config &config) { /* basic machine hardware */ CDP1802(config, m_maincpu, XTAL(3'579'545)/2); m_maincpu->set_addrmap(AS_PROGRAM, &elf2_state::elf2_mem); m_maincpu->set_addrmap(AS_IO, &elf2_state::elf2_io); m_maincpu->wait_cb().set(FUNC(elf2_state::wait_r)); m_maincpu->clear_cb().set(FUNC(elf2_state::clear_r)); m_maincpu->ef4_cb().set(FUNC(elf2_state::ef4_r)); m_maincpu->q_cb().set(FUNC(elf2_state::q_w)); m_maincpu->dma_rd_cb().set(FUNC(elf2_state::dma_r)); m_maincpu->dma_wr_cb().set(m_vdc, FUNC(cdp1861_device::dma_w)); m_maincpu->sc_cb().set(FUNC(elf2_state::sc_w)); /* video hardware */ config.set_default_layout(layout_elf2); CDP1861(config, m_vdc, XTAL(3'579'545)/2).set_screen(SCREEN_TAG); m_vdc->int_cb().set_inputline(m_maincpu, COSMAC_INPUT_LINE_INT); m_vdc->dma_out_cb().set_inputline(m_maincpu, COSMAC_INPUT_LINE_DMAOUT); m_vdc->efx_cb().set_inputline(m_maincpu, COSMAC_INPUT_LINE_EF1); SCREEN(config, SCREEN_TAG, SCREEN_TYPE_RASTER); /* devices */ MM74C923(config, m_kb, 0); m_kb->set_cap_osc(CAP_U(0.15)); m_kb->set_cap_debounce(CAP_U(1)); m_kb->da_wr_callback().set(FUNC(elf2_state::da_w)); m_kb->x1_rd_callback().set_ioport("X1"); m_kb->x2_rd_callback().set_ioport("X2"); m_kb->x3_rd_callback().set_ioport("X3"); m_kb->x4_rd_callback().set_ioport("X4"); DM9368(config, m_led_h, 0).update_cb().set(FUNC(elf2_state::digit_w<0>)); DM9368(config, m_led_l, 0).update_cb().set(FUNC(elf2_state::digit_w<1>)); SPEAKER(config, "mono").front_center(); CASSETTE(config, m_cassette); m_cassette->set_default_state(CASSETTE_STOPPED | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_ENABLED); m_cassette->add_route(ALL_OUTPUTS, "mono", 0.05); QUICKLOAD(config, "quickload", "bin").set_load_callback(FUNC(elf2_state::quickload_cb)); /* internal ram */ RAM(config, RAM_TAG).set_default_size("256"); } /* ROMs */ ROM_START( elf2 ) ROM_REGION( 0x10000, CDP1802_TAG, ROMREGION_ERASE00 ) ROM_END /* System Drivers */ // YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS COMP( 1978, elf2, 0, 0, elf2, elf2, elf2_state, empty_init, "Netronics", "Elf II", MACHINE_SUPPORTS_SAVE | MACHINE_NO_SOUND)