// license:BSD-3-Clause // copyright-holders:Robbbert /*************************************************************************** Unior 2009-05-12 Skeleton driver. 2013-10-09 Added DMA and CRTC 2013-10-11 Added PPI, PIT, UART, sound Some info obtained from EMU-80. The schematic is difficult to read, and some code is guesswork. The monitor will only allow certain characters to be typed, thus the modifier keys appear to do nothing. There is no need to use the enter key; using spacebar and the correct parameters is enough. If you press Shift, indicators for numlock and capslock will appear. Monitor commands: C D - hex dump E - save F G H - set register I - load J - modify memory K L - list registers M ToDo: - Cassette - Colour ****************************************************************************/ #include "emu.h" #include "cpu/i8085/i8085.h" #include "machine/i8251.h" #include "machine/pit8253.h" #include "machine/i8255.h" #include "machine/i8257.h" #include "video/i8275.h" #include "sound/spkrdev.h" #include "screen.h" #include "speaker.h" class unior_state : public driver_device { public: unior_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") , m_pit(*this, "pit") , m_dma(*this, "dma") , m_palette(*this, "palette") , m_p_chargen(*this, "chargen") , m_p_vram(*this, "vram") { } DECLARE_WRITE8_MEMBER(vram_w); DECLARE_WRITE8_MEMBER(scroll_w); DECLARE_READ8_MEMBER(ppi0_b_r); DECLARE_WRITE8_MEMBER(ppi0_b_w); DECLARE_READ8_MEMBER(ppi1_a_r); DECLARE_READ8_MEMBER(ppi1_b_r); DECLARE_READ8_MEMBER(ppi1_c_r); DECLARE_WRITE8_MEMBER(ppi1_a_w); DECLARE_WRITE8_MEMBER(ppi1_c_w); DECLARE_WRITE_LINE_MEMBER(hrq_w); DECLARE_PALETTE_INIT(unior); DECLARE_READ8_MEMBER(dma_r); I8275_DRAW_CHARACTER_MEMBER(display_pixels); void unior(machine_config &config); void unior_io(address_map &map); void unior_mem(address_map &map); private: uint8_t m_4c; uint8_t m_4e; virtual void machine_reset() override; required_device m_maincpu; required_device m_pit; required_device m_dma; required_device m_palette; required_region_ptr m_p_chargen; required_region_ptr m_p_vram; }; void unior_state::unior_mem(address_map &map) { map.unmap_value_high(); map(0x0000, 0xf7ff).ram(); map(0xf800, 0xffff).rom().w(this, FUNC(unior_state::vram_w)); // main video } void unior_state::unior_io(address_map &map) { map.unmap_value_high(); map.global_mask(0xff); map(0x30, 0x38).rw(m_dma, FUNC(i8257_device::read), FUNC(i8257_device::write)); // dma data map(0x3c, 0x3f).rw("ppi0", FUNC(i8255_device::read), FUNC(i8255_device::write)); // cassette player control map(0x4c, 0x4f).rw("ppi1", FUNC(i8255_device::read), FUNC(i8255_device::write)); map(0x50, 0x50).w(this, FUNC(unior_state::scroll_w)); map(0x60, 0x61).rw("crtc", FUNC(i8275_device::read), FUNC(i8275_device::write)); map(0xdc, 0xdf).rw(m_pit, FUNC(pit8253_device::read), FUNC(pit8253_device::write)); map(0xec, 0xec).rw("uart", FUNC(i8251_device::data_r), FUNC(i8251_device::data_w)); map(0xed, 0xed).rw("uart", FUNC(i8251_device::status_r), FUNC(i8251_device::control_w)); } /* Input ports */ static INPUT_PORTS_START( unior ) PORT_START("X0") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9_PAD) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8_PAD) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_UNUSED) // nothing PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_UNUSED) // nothing PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Shift") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4_PAD) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5_PAD) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6_PAD) PORT_START("X1") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ESC) PORT_CHAR(27) // cancel input PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TAB) PORT_CHAR(9) // Russian little M PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Ctrl") PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Rus/Lat") PORT_CODE(KEYCODE_LALT) PORT_CODE(KEYCODE_RALT) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("NUMLK") PORT_CODE(KEYCODE_NUMLOCK) // switches 1st indicator between N and B - numlock? rctrl PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_PLUS_PAD) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS_PAD) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ASTERISK) PORT_START("X2") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') // ; PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_J) PORT_CHAR('J') PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) PORT_CHAR('Q') PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("CAPS") PORT_CODE(KEYCODE_CAPSLOCK) // switches 2nd indicator between U and B - capslock? rshift PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0_PAD) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_DEL_PAD) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ENTER_PAD) PORT_START("X3") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F1) // A PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('^') // ^ (') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1_PAD) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2_PAD) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3_PAD) PORT_START("X4") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F2) // B PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('"') PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) PORT_CHAR('U') PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_W) PORT_CHAR('W') PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) PORT_CHAR('S') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7_PAD) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F7) // H PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F8) // I PORT_START("X5") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F3) // C PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_K) PORT_CHAR('K') PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_M) PORT_CHAR('M') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("BSPACE") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F6) // G PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("LF") PORT_CODE(KEYCODE_HOME) PORT_CHAR(10) // line feed? PORT_START("X6") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR(0xA4) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_P) PORT_CHAR('P') PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CHAR('I') // I then hangs PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_RIGHT) // Russian A PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SLASH) // ? (/) PORT_START("X7") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F4) // D PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_N) PORT_CHAR('N') PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_R) PORT_CHAR('R') PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_T) PORT_CHAR('T') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_DOWN) // Russian bl PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_UP) // Russian signpost PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED) // } (<>) PORT_START("X8") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F5) // E PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&') PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) PORT_CHAR('G') PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_O) PORT_CHAR('O') PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(". >") PORT_CODE(KEYCODE_STOP) PORT_CHAR('>') // > PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("= :") PORT_CODE(KEYCODE_EQUALS) PORT_CHAR(':') // : PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("- =") PORT_CODE(KEYCODE_MINUS) PORT_CHAR('=') // = PORT_START("X9") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'') PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('L') PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LEFT) // Russian U PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CHAR('H') PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_START("XA") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(') PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(']') PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TILDE) PORT_CHAR('@') // (`) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR('<') // < PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('V') PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')') INPUT_PORTS_END /************************************************* Video *************************************************/ /* F4 Character Displayer */ static const gfx_layout unior_charlayout = { 8, 8, /* 8 x 8 characters */ 256, /* 256 characters */ 1, /* 1 bits per pixel */ { 0 }, /* no bitplanes */ /* x offsets */ { 0, 1, 2, 3, 4, 5, 6, 7 }, /* y offsets */ { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 }, 8*8 /* every char takes 8 bytes */ }; static GFXDECODE_START( gfx_unior ) GFXDECODE_ENTRY( "chargen", 0x0000, unior_charlayout, 0, 1 ) GFXDECODE_END WRITE8_MEMBER( unior_state::vram_w ) { m_p_vram[offset] = data; } // pulses a 1 to scroll WRITE8_MEMBER( unior_state::scroll_w ) { if (data) memmove(m_p_vram, m_p_vram+80, 24*80); } I8275_DRAW_CHARACTER_MEMBER(unior_state::display_pixels) { const rgb_t *palette = m_palette->palette()->entry_list_raw(); uint8_t gfx = m_p_chargen[(linecount & 7) | (charcode << 3)]; if (vsp) gfx = 0; if (lten) gfx = 0xff; if (rvv) gfx ^= 0xff; for(uint8_t i=0;i<6;i++) bitmap.pix32(y, x + i) = palette[BIT(gfx, 5-i) ? (hlgt ? 2 : 1) : 0]; } static const rgb_t unior_palette[3] = { rgb_t(0x00, 0x00, 0x00), // black rgb_t(0xa0, 0xa0, 0xa0), // white rgb_t(0xff, 0xff, 0xff) // highlight }; PALETTE_INIT_MEMBER(unior_state,unior) { palette.set_pen_colors(0, unior_palette, ARRAY_LENGTH(unior_palette)); } /************************************************* i8255 *************************************************/ READ8_MEMBER( unior_state::ppi0_b_r ) { return 0; } WRITE8_MEMBER( unior_state::ppi0_b_w ) { } READ8_MEMBER( unior_state::ppi1_a_r ) { return m_4c; } READ8_MEMBER( unior_state::ppi1_b_r ) { char kbdrow[6]; sprintf(kbdrow,"X%X", m_4c&15); return ioport(kbdrow)->read(); } READ8_MEMBER( unior_state::ppi1_c_r ) { return m_4e; } WRITE8_MEMBER( unior_state::ppi1_a_w ) { m_4c = data; } /* d0,1,2 = connect to what might be a 74LS138, then to an external slot d4 = speaker gate d5 = unknown d6 = connect to A7 of the palette prom d7 = not used */ WRITE8_MEMBER( unior_state::ppi1_c_w ) { m_4e = data; m_pit->write_gate2(BIT(data, 4)); } /************************************************* i8257 *************************************************/ READ8_MEMBER(unior_state::dma_r) { if (offset < 0xf800) return m_maincpu->space(AS_PROGRAM).read_byte(offset); else return m_p_vram[offset & 0x7ff]; } WRITE_LINE_MEMBER( unior_state::hrq_w ) { m_maincpu->set_input_line(INPUT_LINE_HALT, state); m_dma->hlda_w(state); } /************************************************* Machine *************************************************/ void unior_state::machine_reset() { m_maincpu->set_state_int(i8080_cpu_device::I8085_PC, 0xF800); } MACHINE_CONFIG_START(unior_state::unior) /* basic machine hardware */ MCFG_DEVICE_ADD("maincpu",I8080, XTAL(20'000'000) / 9) MCFG_DEVICE_PROGRAM_MAP(unior_mem) MCFG_DEVICE_IO_MAP(unior_io) /* video hardware */ MCFG_SCREEN_ADD("screen", RASTER) MCFG_SCREEN_REFRESH_RATE(50) MCFG_SCREEN_SIZE(640, 200) MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 200-1) MCFG_SCREEN_UPDATE_DEVICE("crtc", i8275_device, screen_update) MCFG_DEVICE_ADD("gfxdecode", GFXDECODE, "palette", gfx_unior) MCFG_PALETTE_ADD("palette", 3) MCFG_PALETTE_INIT_OWNER(unior_state,unior) /* sound hardware */ SPEAKER(config, "mono").front_center(); MCFG_DEVICE_ADD("speaker", SPEAKER_SOUND) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50) /* Devices */ MCFG_DEVICE_ADD("uart", I8251, 0) MCFG_DEVICE_ADD("pit", PIT8253, 0) MCFG_PIT8253_CLK0(XTAL(20'000'000) / 12) MCFG_PIT8253_CLK1(XTAL(20'000'000) / 9) MCFG_PIT8253_OUT1_HANDLER(WRITELINE("uart", i8251_device, write_txc)) MCFG_DEVCB_CHAIN_OUTPUT(WRITELINE("uart", i8251_device, write_rxc)) MCFG_PIT8253_CLK2(XTAL(16'000'000) / 9 / 64) // unknown frequency MCFG_PIT8253_OUT2_HANDLER(WRITELINE("speaker", speaker_sound_device, level_w)) MCFG_DEVICE_ADD("ppi0", I8255, 0) // ports a & c connect to an external slot MCFG_I8255_IN_PORTB_CB(READ8(*this, unior_state, ppi0_b_r)) MCFG_I8255_OUT_PORTB_CB(WRITE8(*this, unior_state, ppi0_b_w)) MCFG_DEVICE_ADD("ppi1", I8255, 0) // ports a & b are for the keyboard // port c operates various control lines for mostly unknown purposes MCFG_I8255_IN_PORTA_CB(READ8(*this, unior_state, ppi1_a_r)) MCFG_I8255_OUT_PORTA_CB(WRITE8(*this, unior_state, ppi1_a_w)) MCFG_I8255_IN_PORTB_CB(READ8(*this, unior_state, ppi1_b_r)) MCFG_I8255_IN_PORTC_CB(READ8(*this, unior_state, ppi1_c_r)) MCFG_I8255_OUT_PORTC_CB(WRITE8(*this, unior_state, ppi1_c_w)) MCFG_DEVICE_ADD("dma", I8257, XTAL(20'000'000) / 9) MCFG_I8257_OUT_HRQ_CB(WRITELINE(*this, unior_state, hrq_w)) MCFG_I8257_IN_MEMR_CB(READ8(*this, unior_state, dma_r)) MCFG_I8257_OUT_IOW_2_CB(WRITE8("crtc", i8275_device, dack_w)) MCFG_DEVICE_ADD("crtc", I8275, XTAL(20'000'000) / 12) MCFG_I8275_CHARACTER_WIDTH(6) MCFG_I8275_DRAW_CHARACTER_CALLBACK_OWNER(unior_state, display_pixels) MCFG_I8275_DRQ_CALLBACK(WRITELINE("dma",i8257_device, dreq2_w)) MCFG_VIDEO_SET_SCREEN("screen") MACHINE_CONFIG_END /* ROM definition */ ROM_START( unior ) ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) ROM_LOAD( "unior.rom", 0xf800, 0x0800, CRC(23a347e8) SHA1(2ef3134e2f4a696c3b52a145fa5a2d4c3487194b)) ROM_REGION( 0x0840, "chargen", ROMREGION_ERASEFF ) ROM_LOAD( "unior.fnt", 0x0000, 0x0800, CRC(4f654828) SHA1(8c0ac11ea9679a439587952e4908940b67c4105e)) // according to schematic this should be 256 bytes ROM_LOAD( "palette.rom", 0x0800, 0x0040, CRC(b4574ceb) SHA1(f7a82c61ab137de8f6a99b0c5acf3ac79291f26a)) ROM_REGION( 0x0800, "vram", ROMREGION_ERASEFF ) ROM_END /* Driver */ /* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */ COMP( 19??, unior, radio86, 0, unior, unior, unior_state, empty_init, "", "Unior", MACHINE_NOT_WORKING )