// license:BSD-3-Clause // copyright-holders:AJR /*************************************************************************** Skeleton driver for Epic 14E video display terminal. This green-screen terminal emulates the TeleVideo 925. It was later acquired by ADDS and rereleased as the Viewpoint/925+. ***************************************************************************/ #include "emu.h" //#include "bus/rs232/rs232.h" #include "cpu/m6502/m6502.h" #include "cpu/mcs48/mcs48.h" #include "machine/input_merger.h" #include "machine/6522via.h" #include "machine/mos6551.h" #include "video/scn2674.h" #include "screen.h" class epic14e_state : public driver_device { public: epic14e_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") , m_via(*this, "via") , m_charram(*this, "charram") , m_attrram(*this, "attrram") , m_chargen(*this, "chargen") , m_dsw(*this, "DSW%u", 1U) { } void epic14e(machine_config &config); private: SCN2672_DRAW_CHARACTER_MEMBER(draw_character); u8 vram_r(offs_t offset); void vram_w(offs_t offset, u8 data); void cpu_map(address_map &map); void char_map(address_map &map); void attr_map(address_map &map); required_device m_maincpu; required_device m_via; required_shared_ptr m_charram; required_shared_ptr m_attrram; required_region_ptr m_chargen; required_ioport_array<3> m_dsw; }; SCN2672_DRAW_CHARACTER_MEMBER(epic14e_state::draw_character) { const u8 chardata = m_chargen[charcode << 4 | linecount]; u16 dots = ((chardata & 0x7f) << 2) | (BIT(chardata, 7) ? 3 : 0); for (int i = 0; i < 9; i++) { bitmap.pix32(y, x++) = BIT(dots, 8) ? rgb_t::white() : rgb_t::black(); dots <<= 1; } } u8 epic14e_state::vram_r(offs_t offset) { return (BIT(offset, 0) ? m_charram : m_attrram)[offset >> 1]; } void epic14e_state::vram_w(offs_t offset, u8 data) { (BIT(offset, 0) ? m_charram : m_attrram)[offset >> 1] = data; } void epic14e_state::cpu_map(address_map &map) { map(0x0000, 0x07ff).ram(); map(0x2000, 0x3fff).rw(FUNC(epic14e_state::vram_r), FUNC(epic14e_state::vram_w)); map(0x6000, 0x6007).rw("pvtc", FUNC(scn2672_device::read), FUNC(scn2672_device::write)); map(0x8000, 0x8003).rw("acia1", FUNC(mos6551_device::read), FUNC(mos6551_device::write)); map(0x9000, 0x9003).rw("acia2", FUNC(mos6551_device::read), FUNC(mos6551_device::write)); map(0xa010, 0xa01f).m(m_via, FUNC(via6522_device::map)); map(0xe000, 0xffff).rom().region("program", 0); } void epic14e_state::char_map(address_map &map) { map(0x0000, 0x0fff).ram().share("charram"); } void epic14e_state::attr_map(address_map &map) { map(0x0000, 0x0fff).ram().share("attrram"); } static INPUT_PORTS_START(epic14e) PORT_START("DSW1") PORT_DIPNAME(0x001, 0x001, "Modem Stop Bits") PORT_DIPLOCATION("SW1:1") PORT_DIPSETTING(0x001, "1") PORT_DIPSETTING(0x000, "2") PORT_DIPNAME(0x002, 0x002, "Modem Data Bits") PORT_DIPLOCATION("SW1:2") PORT_DIPSETTING(0x000, "7") PORT_DIPSETTING(0x002, "8") PORT_DIPNAME(0x004, 0x004, "Modem Protocol") PORT_DIPLOCATION("SW1:3") PORT_DIPSETTING(0x004, "X-ON/X-OFF") PORT_DIPSETTING(0x000, "CTS") PORT_DIPNAME(0x078, 0x040, "Modem Baud Rate") PORT_DIPLOCATION("SW1:4,5,6,7") PORT_DIPSETTING(0x038, "50") PORT_DIPSETTING(0x058, "75") PORT_DIPSETTING(0x018, "110") PORT_DIPSETTING(0x068, "135") PORT_DIPSETTING(0x028, "150") PORT_DIPSETTING(0x048, "300") PORT_DIPSETTING(0x008, "600") PORT_DIPSETTING(0x070, "1200") PORT_DIPSETTING(0x030, "1800") PORT_DIPSETTING(0x050, "2400") PORT_DIPSETTING(0x010, "3600") PORT_DIPSETTING(0x060, "4800") PORT_DIPSETTING(0x020, "7200") PORT_DIPSETTING(0x040, "9600") PORT_DIPSETTING(0x000, "19200") PORT_DIPNAME(0x380, 0x380, "Modem Parity") PORT_DIPLOCATION("SW1:8,9,10") PORT_DIPSETTING(0x380, "Disable") PORT_DIPSETTING(0x180, "Odd") PORT_DIPSETTING(0x080, "Even") PORT_DIPSETTING(0x100, "Mark") PORT_DIPSETTING(0x000, "Space") PORT_START("DSW2") PORT_DIPNAME(0x001, 0x001, "Auxiliary Stop Bits") PORT_DIPLOCATION("SW2:1") PORT_DIPSETTING(0x001, "1") PORT_DIPSETTING(0x000, "2") PORT_DIPNAME(0x002, 0x002, "Auxiliary Data Bits") PORT_DIPLOCATION("SW2:2") PORT_DIPSETTING(0x000, "7") PORT_DIPSETTING(0x002, "8") PORT_DIPNAME(0x004, 0x004, "Auxiliary Protocol") PORT_DIPLOCATION("SW2:3") PORT_DIPSETTING(0x004, "X-ON/X-OFF") PORT_DIPSETTING(0x000, "DTR") PORT_DIPNAME(0x078, 0x040, "Auxiliary Baud Rate") PORT_DIPLOCATION("SW1:4,5,6,7") PORT_DIPSETTING(0x038, "50") PORT_DIPSETTING(0x058, "75") PORT_DIPSETTING(0x018, "110") PORT_DIPSETTING(0x068, "135") PORT_DIPSETTING(0x028, "150") PORT_DIPSETTING(0x048, "300") PORT_DIPSETTING(0x008, "600") PORT_DIPSETTING(0x070, "1200") PORT_DIPSETTING(0x030, "1800") PORT_DIPSETTING(0x050, "2400") PORT_DIPSETTING(0x010, "3600") PORT_DIPSETTING(0x060, "4800") PORT_DIPSETTING(0x020, "7200") PORT_DIPSETTING(0x040, "9600") PORT_DIPSETTING(0x000, "19200") PORT_DIPNAME(0x380, 0x380, "Auxiliary Parity") PORT_DIPLOCATION("SW2:8,9,10") PORT_DIPSETTING(0x380, "Disable") PORT_DIPSETTING(0x180, "Odd") PORT_DIPSETTING(0x080, "Even") PORT_DIPSETTING(0x100, "Mark") PORT_DIPSETTING(0x000, "Space") PORT_START("DSW3") PORT_DIPNAME(0x003, 0x003, "Communications Mode") PORT_DIPLOCATION("SW3:1,2") PORT_DIPSETTING(0x003, "Full Duplex") PORT_DIPSETTING(0x001, "Half Duplex") PORT_DIPSETTING(0x002, "Block") PORT_DIPSETTING(0x000, "Local") PORT_DIPNAME(0x004, 0x004, "Screen Mode") PORT_DIPLOCATION("SW3:3") PORT_DIPSETTING(0x004, "Green on Black") PORT_DIPSETTING(0x000, "Black on Green") PORT_DIPNAME(0x008, 0x008, "Key Click") PORT_DIPLOCATION("SW3:4") PORT_DIPSETTING(0x008, DEF_STR(Off)) PORT_DIPSETTING(0x000, DEF_STR(On)) PORT_DIPNAME(0x010, 0x010, "Screen Refresh") PORT_DIPLOCATION("SW3:5") PORT_DIPSETTING(0x000, "50 Hz") PORT_DIPSETTING(0x010, "60 Hz") PORT_DIPNAME(0x020, 0x020, "Terminal Emulation") PORT_DIPLOCATION("SW3:6") PORT_DIPSETTING(0x020, "Epic 14E") PORT_DIPSETTING(0x000, "Other") PORT_DIPNAME(0x040, 0x040, "Page/Line Attributes") PORT_DIPLOCATION("SW3:7") PORT_DIPSETTING(0x040, "Page") PORT_DIPSETTING(0x000, "Line") PORT_DIPNAME(0x080, 0x080, "Edit Keys") PORT_DIPLOCATION("SW3:8") PORT_DIPSETTING(0x080, "Transmitted") PORT_DIPSETTING(0x000, "Local") PORT_DIPNAME(0x100, 0x100, "Return Key") PORT_DIPLOCATION("SW3:9") PORT_DIPSETTING(0x100, "CR") PORT_DIPSETTING(0x000, "CR/LF") PORT_DIPNAME(0x200, 0x200, "CRT Saver") PORT_DIPLOCATION("SW3:10") PORT_DIPSETTING(0x200, DEF_STR(Off)) PORT_DIPSETTING(0x000, DEF_STR(On)) INPUT_PORTS_END void epic14e_state::epic14e(machine_config &config) { M6502(config, m_maincpu, 17.01_MHz_XTAL / 9); // SY6502A (1.89 MHz confirmed) m_maincpu->set_addrmap(AS_PROGRAM, &epic14e_state::cpu_map); INPUT_MERGER_ANY_HIGH(config, "mainirq").output_handler().set_inputline(m_maincpu, m6502_device::IRQ_LINE); VIA6522(config, m_via, 17.01_MHz_XTAL / 9); // SY6522A m_via->irq_handler().set("mainirq", FUNC(input_merger_device::in_w<0>)); I8748(config, "keybmcu", 4608000).set_disable(); screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); screen.set_color(rgb_t::green()); screen.set_raw(17.01_MHz_XTAL, 900, 0, 720, 315, 0, 300); screen.set_screen_update("pvtc", FUNC(scn2672_device::screen_update)); scn2672_device &pvtc(SCN2672(config, "pvtc", 17.01_MHz_XTAL / 9)); pvtc.intr_callback().set_inputline(m_maincpu, m6502_device::NMI_LINE); pvtc.set_character_width(9); pvtc.set_display_callback(FUNC(epic14e_state::draw_character)); pvtc.set_addrmap(0, &epic14e_state::char_map); pvtc.set_addrmap(1, &epic14e_state::attr_map); pvtc.set_screen("screen"); // TODO: Serial keyboard clocked at 60 Hz frame rate mos6551_device &acia1(MOS6551(config, "acia1", 17.01_MHz_XTAL / 9)); // SY6551A acia1.set_xtal(1.8432_MHz_XTAL); acia1.irq_handler().set("mainirq", FUNC(input_merger_device::in_w<1>)); mos6551_device &acia2(MOS6551(config, "acia2", 17.01_MHz_XTAL / 9)); // SY6551A acia2.set_xtal(1.8432_MHz_XTAL); // each ACIA has its own XTAL acia2.irq_handler().set("mainirq", FUNC(input_merger_device::in_w<2>)); //RS232_PORT(config, "modem", default_rs232_devices, nullptr); //RS232_PORT(config, "aux", default_rs232_devices, nullptr); } ROM_START(epic14e) ROM_REGION(0x2000, "program", 0) ROM_LOAD("u6.bin", 0x0000, 0x1000, CRC(014b5da0) SHA1(190c2d48c6928d143458ba094f785d40ac29f2c0)) ROM_LOAD("u13.bin", 0x1000, 0x1000, CRC(2b406a88) SHA1(e619cc020ab5eabad99967b27cb969ceb191f5ee)) ROM_REGION(0x1000, "chargen", 0) ROM_LOAD("u24.bin", 0x0000, 0x1000, CRC(da409f03) SHA1(5a90a6b865dad20dc3f455448670b4f5baa55028)) ROM_REGION(0x0400, "keybmcu", 0) ROM_LOAD("246.bin", 0x0000, 0x0400, NO_DUMP) ROM_END COMP(1982, epic14e, 0, 0, epic14e, epic14e, epic14e_state, empty_init, "Epic Computer Products", "Epic 14E (v1.0)", MACHINE_IS_SKELETON)