// license:BSD-3-Clause // copyright-holders:Miodrag Milanovic, Robbbert /*************************************************************************** Plan-80 2009-12-06 Skeleton driver. Summary of Monitor commands: D - dump memory F - fill memory G - go (execute program at address) I - in from a port and display M - move? O - out to a port S - edit memory ToDo: - fix autorepeat on the keyboard - Add missing devices - Picture of unit shows graphics, possibly a PCG ****************************************************************************/ #include "emu.h" #include "cpu/i8085/i8085.h" #include "sound/spkrdev.h" #include "emupal.h" #include "screen.h" #include "speaker.h" namespace { class plan80_state : public driver_device { public: plan80_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") , m_rom(*this, "maincpu") , m_ram(*this, "mainram") , m_vram(*this, "videoram") , m_p_chargen(*this, "chargen") , m_speaker(*this, "speaker") { } void plan80(machine_config &config); private: u8 port04_r(); void port09_w(u8 data); void port10_w(u8 data); u32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); void io_map(address_map &map); void mem_map(address_map &map); u8 m_kbd_row = 0U; bool m_spk_pol = false; virtual void machine_reset() override; virtual void machine_start() override; memory_passthrough_handler m_rom_shadow_tap; required_device m_maincpu; required_region_ptr m_rom; required_shared_ptr m_ram; required_shared_ptr m_vram; required_region_ptr m_p_chargen; required_device m_speaker; }; u8 plan80_state::port04_r() { u8 data = 0xff; if (m_kbd_row == 0xfe) data = ioport("LINE0")->read(); else if (m_kbd_row == 0xfd) data = ioport("LINE1")->read(); else if (m_kbd_row == 0xfb) data = ioport("LINE2")->read(); else if (m_kbd_row == 0xf7) data = ioport("LINE3")->read(); else if (m_kbd_row == 0xef) data = ioport("LINE4")->read(); return data; } void plan80_state::port09_w(u8 data) { m_kbd_row = data; } void plan80_state::port10_w(u8 data) { m_spk_pol ^= 1; m_speaker->level_w(m_spk_pol); } void plan80_state::mem_map(address_map &map) { map.unmap_value_high(); map(0x0000, 0xefff).ram().share("mainram"); map(0xf000, 0xf7ff).ram().share("videoram"); map(0xf800, 0xffff).rom().region("maincpu", 0); } void plan80_state::io_map(address_map &map) { map.unmap_value_high(); map.global_mask(0xff); map(0x04, 0x04).r(FUNC(plan80_state::port04_r)); map(0x09, 0x09).w(FUNC(plan80_state::port09_w)); map(0x10, 0x10).w(FUNC(plan80_state::port10_w)); } /* Input ports */ static INPUT_PORTS_START( plan80 ) // Keyboard was worked out by trial & error;'F' keys produce foreign symbols PORT_START("LINE0") /* FE */ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("??") PORT_CODE(KEYCODE_F1) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("??") PORT_CODE(KEYCODE_F2) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Shift") PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("A -") PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_CHAR('-') PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Q ! 1") PORT_CODE(KEYCODE_Q) PORT_CHAR('Q') PORT_CHAR('!') PORT_CHAR('1') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F-shift") PORT_CODE(KEYCODE_RSHIFT) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Enter") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("P ?? 0") PORT_CODE(KEYCODE_P) PORT_CHAR('P') PORT_CHAR('0') PORT_START("LINE1") /* FD */ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Backspace") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Numbers") PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_SHIFT_2) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("X /") PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_CHAR('/') PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("D =") PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_CHAR('=') PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("E # 3") PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_CHAR('#') PORT_CHAR('3') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("M .") PORT_CODE(KEYCODE_M) PORT_CHAR('M') PORT_CHAR('.') PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("K [") PORT_CODE(KEYCODE_K) PORT_CHAR('K') PORT_CHAR('[') PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("I ( 8") PORT_CODE(KEYCODE_I) PORT_CHAR('I') PORT_CHAR('(') PORT_CHAR('8') PORT_START("LINE2") /* FB */ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("V ;") PORT_CODE(KEYCODE_V) PORT_CHAR('V') PORT_CHAR(';') PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("G _") PORT_CODE(KEYCODE_G) PORT_CHAR('G') PORT_CHAR('_') PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("T % 5") PORT_CODE(KEYCODE_T) PORT_CHAR('T') PORT_CHAR('%') PORT_CHAR('5') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("B ?") PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_CHAR('?') PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("H <") PORT_CODE(KEYCODE_H) PORT_CHAR('H') PORT_CHAR('<') PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Y & 6") PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') PORT_CHAR('&') PORT_CHAR('6') PORT_START("LINE3") /* F7 */ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Space") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("C :") PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_CHAR(':') PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F ^") PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_CHAR('^') PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("R $ 4") PORT_CODE(KEYCODE_R) PORT_CHAR('R') PORT_CHAR('$') PORT_CHAR('4') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("N ,") PORT_CODE(KEYCODE_N) PORT_CHAR('N') PORT_CHAR(',') PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("J >") PORT_CODE(KEYCODE_J) PORT_CHAR('J') PORT_CHAR('>') PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("U \' 7") PORT_CODE(KEYCODE_U) PORT_CHAR('U') PORT_CHAR('\'') PORT_CHAR('7') PORT_START("LINE4") /* EF */ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("??") PORT_CODE(KEYCODE_F3) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("??") PORT_CODE(KEYCODE_F4) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Z *") PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') PORT_CHAR('*') PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("S +") PORT_CODE(KEYCODE_S) PORT_CHAR('S') PORT_CHAR('+') PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("W \" 2") PORT_CODE(KEYCODE_W) PORT_CHAR('W') PORT_CHAR('\"') PORT_CHAR('2') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("??") PORT_CODE(KEYCODE_F5) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("L ]") PORT_CODE(KEYCODE_L) PORT_CHAR('L') PORT_CHAR(']') PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("O ) 9") PORT_CODE(KEYCODE_O) PORT_CHAR('O') PORT_CHAR(')') PORT_CHAR('9') INPUT_PORTS_END void plan80_state::machine_reset() { address_space &program = m_maincpu->space(AS_PROGRAM); program.install_rom(0x0000, 0x07ff, m_rom); // do it here for F3 m_rom_shadow_tap.remove(); m_rom_shadow_tap = program.install_read_tap( 0xf800, 0xffff, "rom_shadow_r", [this] (offs_t offset, u8 &data, u8 mem_mask) { if (!machine().side_effects_disabled()) { // delete this tap m_rom_shadow_tap.remove(); // reinstall RAM over the ROM shadow m_maincpu->space(AS_PROGRAM).install_ram(0x0000, 0x07ff, m_ram); } }, &m_rom_shadow_tap); } void plan80_state::machine_start() { save_item(NAME(m_kbd_row)); save_item(NAME(m_spk_pol)); } u32 plan80_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { u16 sy=0,ma=0; for (u8 y = 0; y < 32; y++) { for (u8 ra = 0; ra < 8; ra++) { u16 *p = &bitmap.pix(sy++); for (u16 x = ma; x < ma+48; x++) { u8 chr = m_vram[x]; u8 gfx = m_p_chargen[(chr << 3) | ra] ^ (BIT(chr, 7) ? 0xff : 0); /* Display a scanline of a character */ *p++ = BIT(gfx, 6); *p++ = BIT(gfx, 5); *p++ = BIT(gfx, 4); *p++ = BIT(gfx, 3); *p++ = BIT(gfx, 2); *p++ = BIT(gfx, 1); } } ma+=64; } return 0; } /* F4 Character Displayer */ static const gfx_layout 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_plan80 ) GFXDECODE_ENTRY( "chargen", 0x0000, charlayout, 0, 1 ) GFXDECODE_END void plan80_state::plan80(machine_config &config) { /* basic machine hardware */ I8080(config, m_maincpu, 2048000); m_maincpu->set_addrmap(AS_PROGRAM, &plan80_state::mem_map); m_maincpu->set_addrmap(AS_IO, &plan80_state::io_map); /* video hardware */ screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER, rgb_t::green())); screen.set_refresh_hz(50); screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */ screen.set_screen_update(FUNC(plan80_state::screen_update)); screen.set_size(48*6, 32*8); screen.set_visarea(0, 48*6-1, 0, 32*8-1); screen.set_palette("palette"); GFXDECODE(config, "gfxdecode", "palette", gfx_plan80); PALETTE(config, "palette", palette_device::MONOCHROME); /* sound hardware */ SPEAKER(config, "mono").front_center(); SPEAKER_SOUND(config, m_speaker).add_route(ALL_OUTPUTS, "mono", 0.50); } /* ROM definition */ ROM_START( plan80 ) ROM_REGION( 0x0800, "maincpu", 0 ) ROM_LOAD( "pl80mon.bin", 0x0000, 0x0800, CRC(433fb685) SHA1(43d53c35544d3a197ab71b6089328d104535cfa5) ) // This rom 2nd half is missing, so useless. It uses the videoram address range, so it might have been for some other system //ROM_REGION( 0x10000, "spare", 0 ) //ROM_LOAD_OPTIONAL( "pl80mod.bin", 0xf000, 0x0800, CRC(6bdd7136) SHA1(721eab193c33c9330e0817616d3d2b601285fe50)) ROM_REGION( 0x0800, "chargen", 0 ) ROM_LOAD( "pl80gzn.bin", 0x0000, 0x0800, CRC(b4ddbdb6) SHA1(31bf9cf0f2ed53f48dda29ea830f74cea7b9b9b2) ) ROM_END } // anonymous namespace /* Driver */ // YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS COMP( 1988, plan80, 0, 0, plan80, plan80, plan80_state, empty_init, "Tesla Eltos", "Plan-80", MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE )