// license:MAME // 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/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_uart(*this, "uart"), m_palette(*this, "palette") { } DECLARE_WRITE8_MEMBER(vram_w); DECLARE_WRITE8_MEMBER(scroll_w); DECLARE_WRITE_LINE_MEMBER(write_uart_clock); 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); UINT8 *m_p_vram; UINT8 *m_p_chargen; private: UINT8 m_4c; UINT8 m_4e; virtual void machine_reset(); virtual void video_start(); required_device m_maincpu; required_device m_pit; required_device m_dma; required_device m_uart; public: required_device m_palette; }; static ADDRESS_MAP_START( unior_mem, AS_PROGRAM, 8, unior_state ) ADDRESS_MAP_UNMAP_HIGH AM_RANGE(0x0000, 0xf7ff) AM_RAM AM_RANGE(0xf800, 0xffff) AM_ROM AM_WRITE(vram_w) // main video ADDRESS_MAP_END static ADDRESS_MAP_START( unior_io, AS_IO, 8, unior_state ) ADDRESS_MAP_UNMAP_HIGH ADDRESS_MAP_GLOBAL_MASK(0xff) AM_RANGE(0x30, 0x38) AM_DEVREADWRITE("dma", i8257_device, read, write) // dma data AM_RANGE(0x3c, 0x3f) AM_DEVREADWRITE("ppi0", i8255_device, read, write) // cassette player control AM_RANGE(0x4c, 0x4f) AM_DEVREADWRITE("ppi1", i8255_device, read, write) AM_RANGE(0x50, 0x50) AM_WRITE(scroll_w) AM_RANGE(0x60, 0x61) AM_DEVREADWRITE("crtc", i8275_device, read, write) AM_RANGE(0xdc, 0xdf) AM_DEVREADWRITE("pit", pit8253_device, read, write ) AM_RANGE(0xec, 0xec) AM_DEVREADWRITE("uart",i8251_device, data_r, data_w) AM_RANGE(0xed, 0xed) AM_DEVREADWRITE("uart", i8251_device, status_r, control_w) ADDRESS_MAP_END /* 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('\xA4') 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( 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) memcpy(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 gfx = m_p_chargen[(linecount & 7) | (charcode << 3)]; if(linecount == 8) gfx = 0; if (vsp) gfx = 0; if (lten) gfx = 0xff; if (rvv) gfx ^= 0xff; for(UINT8 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 *************************************************/ WRITE_LINE_MEMBER(unior_state::write_uart_clock) { m_uart->write_txc(state); m_uart->write_rxc(state); } 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(I8085_PC, 0xF800); } void unior_state::video_start() { m_p_chargen = memregion("chargen")->base(); m_p_vram = memregion("vram")->base(); } static MACHINE_CONFIG_START( unior, unior_state ) /* basic machine hardware */ MCFG_CPU_ADD("maincpu",I8080, XTAL_20MHz / 9) MCFG_CPU_PROGRAM_MAP(unior_mem) MCFG_CPU_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_GFXDECODE_ADD("gfxdecode", "palette", unior) MCFG_PALETTE_ADD("palette", 3) MCFG_PALETTE_INIT_OWNER(unior_state,unior) /* sound hardware */ MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0) 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_20MHz / 12) MCFG_PIT8253_CLK1(XTAL_20MHz / 9) MCFG_PIT8253_OUT1_HANDLER(WRITELINE(unior_state, write_uart_clock)) MCFG_PIT8253_CLK2(XTAL_16MHz / 9 / 64) // unknown frequency MCFG_PIT8253_OUT2_HANDLER(DEVWRITELINE("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(unior_state, ppi0_b_r)) MCFG_I8255_OUT_PORTB_CB(WRITE8(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(unior_state, ppi1_a_r)) MCFG_I8255_OUT_PORTA_CB(WRITE8(unior_state, ppi1_a_w)) MCFG_I8255_IN_PORTB_CB(READ8(unior_state, ppi1_b_r)) MCFG_I8255_IN_PORTC_CB(READ8(unior_state, ppi1_c_r)) MCFG_I8255_OUT_PORTC_CB(WRITE8(unior_state, ppi1_c_w)) MCFG_DEVICE_ADD("dma", I8257, XTAL_20MHz / 9) MCFG_I8257_OUT_HRQ_CB(WRITELINE(unior_state, hrq_w)) MCFG_I8257_IN_MEMR_CB(READ8(unior_state, dma_r)) MCFG_I8257_OUT_IOW_2_CB(DEVWRITE8("crtc", i8275_device, dack_w)) MCFG_DEVICE_ADD("crtc", I8275, XTAL_20MHz / 12) MCFG_I8275_CHARACTER_WIDTH(6) MCFG_I8275_DRAW_CHARACTER_CALLBACK_OWNER(unior_state, display_pixels) MCFG_I8275_DRQ_CALLBACK(DEVWRITELINE("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, driver_device, 0, "", "Unior", GAME_NOT_WORKING )