diff options
Diffstat (limited to 'src/mame/drivers/rt1715.cpp')
-rw-r--r-- | src/mame/drivers/rt1715.cpp | 371 |
1 files changed, 330 insertions, 41 deletions
diff --git a/src/mame/drivers/rt1715.cpp b/src/mame/drivers/rt1715.cpp index d5e8aa00963..8cc7fbb8309 100644 --- a/src/mame/drivers/rt1715.cpp +++ b/src/mame/drivers/rt1715.cpp @@ -1,22 +1,32 @@ // license:BSD-3-Clause -// copyright-holders:Miodrag Milanovic, Robbbert +// copyright-holders:Miodrag Milanovic, Robbbert, Sergey Svishchev /*************************************************************************** Robotron PC-1715 10/06/2008 Preliminary driver. - Notes: - - keyboard connected to sio channel a - sio channel a clock output connected to ctc trigger 0 + - rt1715w: SCP3 boot crashes in z80dma (Unknown base register XX) + + Docs: + - http://www.robotrontechnik.de/html/computer/pc1715w.htm + - https://www.tiffe.de/Robotron/PC1715/ -- scanned PDFs + https://www.tiffe.de/Robotron/PC1715/MANUAL_PC_1715.pdf + - http://www.sax.de/~zander/pc1715/pc_bw.html -- typeset PDFs + http://www.sax.de/~zander/pc1715/doku/pc_manu.pdf + - http://xepb.org/robotron/ ****************************************************************************/ #include "emu.h" #include "cpu/z80/z80.h" +#include "imagedev/floppy.h" +#include "machine/bankdev.h" #include "machine/ram.h" +#include "machine/upd765.h" #include "machine/z80ctc.h" #include "machine/z80sio.h" #include "machine/z80dma.h" @@ -33,6 +43,18 @@ public: : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") , m_ram(*this, RAM_TAG) + , m_bankdev(*this, "bankdev%u", 0U) + , m_sio0(*this, "sio0") + , m_ctc0(*this, "ctc0") + , m_fdc(*this, "i8272") + , m_floppy(*this, "i8272:%u", 0U) + , m_dma(*this, "z80dma") + , m_ctc2(*this, "ctc2") + , m_screen(*this, "screen") + , m_palette(*this, "palette") + , m_crtc(*this, "i8275") + , m_p_chargen(*this, "gfx") + , m_p_videoram(*this, "videoram") { } @@ -40,27 +62,58 @@ public: void rt1715w(machine_config &config); private: + DECLARE_READ8_MEMBER(memory_read_byte); + DECLARE_WRITE8_MEMBER(memory_write_byte); + DECLARE_READ8_MEMBER(io_read_byte); + DECLARE_WRITE8_MEMBER(io_write_byte); + DECLARE_WRITE_LINE_MEMBER(busreq_w); + DECLARE_WRITE_LINE_MEMBER(tc_w); DECLARE_WRITE8_MEMBER(rt1715_floppy_enable); DECLARE_READ8_MEMBER(k7658_led1_r); DECLARE_READ8_MEMBER(k7658_led2_r); DECLARE_READ8_MEMBER(k7658_data_r); DECLARE_WRITE8_MEMBER(k7658_data_w); DECLARE_WRITE8_MEMBER(rt1715_rom_disable); + DECLARE_WRITE8_MEMBER(rt1715w_set_bank); + DECLARE_WRITE8_MEMBER(rt1715w_floppy_motor); + DECLARE_WRITE8_MEMBER(rt1715w_krfd_w); void rt1715_palette(palette_device &palette) const; - I8275_DRAW_CHARACTER_MEMBER( crtc_display_pixels ); + I8275_DRAW_CHARACTER_MEMBER(crtc_display_pixels); + DECLARE_WRITE_LINE_MEMBER(crtc_drq_w); void k7658_io(address_map &map); void k7658_mem(address_map &map); + void rt1715_base_io(address_map &map); void rt1715_io(address_map &map); + void rt1715w_io(address_map &map); void rt1715_mem(address_map &map); + void rt1715w_mem(address_map &map); + void rt1715w_banked_mem(address_map &map); - virtual void machine_start() override; - virtual void machine_reset() override; + DECLARE_MACHINE_START(rt1715); + DECLARE_MACHINE_RESET(rt1715); + DECLARE_MACHINE_START(rt1715w); + DECLARE_MACHINE_RESET(rt1715w); - int m_led1_val; - int m_led2_val; required_device<z80_device> m_maincpu; required_device<ram_device> m_ram; + optional_device_array<address_map_bank_device, 2> m_bankdev; + required_device<z80sio_device> m_sio0; + required_device<z80ctc_device> m_ctc0; + optional_device<i8272a_device> m_fdc; + optional_device_array<floppy_connector, 2> m_floppy; + optional_device<z80dma_device> m_dma; + optional_device<z80ctc_device> m_ctc2; + required_device<screen_device> m_screen; + required_device<palette_device> m_palette; + required_device<i8275_device> m_crtc; + required_region_ptr<uint8_t> m_p_chargen; + optional_shared_ptr<uint8_t> m_p_videoram; + + int m_led1_val; + int m_led2_val; + u8 m_krfd; + uint16_t m_dma_adr; }; @@ -73,6 +126,24 @@ WRITE8_MEMBER(rt1715_state::rt1715_floppy_enable) logerror("%s: rt1715_floppy_enable %02x\n", machine().describe_context(), data); } +WRITE8_MEMBER(rt1715_state::rt1715w_floppy_motor) +{ + logerror("%s: rt1715w_floppy_motor %02x\n", machine().describe_context(), data); + + if (m_floppy[0]->get_device()) m_floppy[0]->get_device()->mon_w(data & 0x80 ? 1 : 0); + if (m_floppy[1]->get_device()) m_floppy[1]->get_device()->mon_w(data & 0x08 ? 1 : 0); +} + +WRITE8_MEMBER(rt1715_state::rt1715w_krfd_w) +{ + logerror("%s: rt1715w_krfd_w %02x\n", machine().describe_context(), data); + m_krfd = data; +} + +WRITE_LINE_MEMBER(rt1715_state::tc_w) +{ + m_fdc->tc_w(state & BIT(m_krfd, 7)); +} /*************************************************************************** KEYBOARD @@ -127,13 +198,13 @@ WRITE8_MEMBER(rt1715_state::k7658_data_w) MEMORY HANDLING ***************************************************************************/ -void rt1715_state::machine_start() +MACHINE_START_MEMBER(rt1715_state, rt1715) { membank("bank2")->set_base(m_ram->pointer() + 0x0800); membank("bank3")->set_base(m_ram->pointer()); } -void rt1715_state::machine_reset() +MACHINE_RESET_MEMBER(rt1715_state, rt1715) { /* on reset, enable ROM */ membank("bank1")->set_base(memregion("ipl")->base()); @@ -147,12 +218,101 @@ WRITE8_MEMBER(rt1715_state::rt1715_rom_disable) membank("bank1")->set_base(m_ram->pointer()); } +MACHINE_START_MEMBER(rt1715_state, rt1715w) +{ + membank("bank2")->set_base(m_ram->pointer() + 0x4000); + membank("bank3")->set_base(m_ram->pointer()); +} + +MACHINE_RESET_MEMBER(rt1715_state, rt1715w) +{ + m_bankdev[0]->set_bank(0); + m_bankdev[1]->set_bank(0); + + m_dma->rdy_w(1); + m_krfd = 0; + m_dma_adr = 0; +} + +/* + b2..0 = AB18..16 + + 0 - Hintergrundbank (Bildschirm, Zeichengeneratoren) + 1 - Systembank (gebanktes BIOS, BDOS) + 2 - Anwenderbank (TPA) + 3 - RAM-Disk + 4 - RAM-Disk + 5 - RAM-Disk +*/ +WRITE8_MEMBER(rt1715_state::rt1715w_set_bank) +{ + int r = data >> 4; + int w = data & 15; + + logerror("%s: rt1715w_set_bank target %x source %x%s\n", machine().describe_context(), r, w, r == w ? "" : " DIFF"); + + m_bankdev[0]->set_bank(r); + m_bankdev[1]->set_bank(w); +} + +READ8_MEMBER(rt1715_state::memory_read_byte) +{ + address_space &prog_space = m_maincpu->space(AS_PROGRAM); + return prog_space.read_byte(offset); +} + +WRITE8_MEMBER(rt1715_state::memory_write_byte) +{ + address_space &prog_space = m_maincpu->space(AS_PROGRAM); + prog_space.write_byte(offset, data); +} + +READ8_MEMBER(rt1715_state::io_read_byte) +{ + address_space &prog_space = m_maincpu->space(AS_IO); + return prog_space.read_byte(offset); +} + +WRITE8_MEMBER(rt1715_state::io_write_byte) +{ + address_space &prog_space = m_maincpu->space(AS_IO); + prog_space.write_byte(offset, data); +} + +WRITE_LINE_MEMBER(rt1715_state::busreq_w) +{ + // since our Z80 has no support for BUSACK, we assume it is granted immediately + m_maincpu->set_input_line(Z80_INPUT_LINE_BUSRQ, state); + m_dma->bai_w(state); // tell dma that bus has been granted +} + /*************************************************************************** VIDEO EMULATION ***************************************************************************/ -I8275_DRAW_CHARACTER_MEMBER( rt1715_state::crtc_display_pixels ) +WRITE_LINE_MEMBER(rt1715_state::crtc_drq_w) +{ + if (state) + { + address_space &mem = m_maincpu->space(AS_PROGRAM); + m_crtc->dack_w(mem, 0, m_p_videoram[m_dma_adr++]); + m_dma_adr %= (80 * 24); + } +} + +I8275_DRAW_CHARACTER_MEMBER(rt1715_state::crtc_display_pixels) { + const rgb_t *palette = m_palette->palette()->entry_list_raw(); + u8 gfx = (lten) ? 0xff : 0; + + if (!vsp) + gfx = m_p_chargen[linecount << 7 | charcode]; + + if (rvv) + gfx ^= 0xff; + + for (u8 i=0; i<8; i++) + bitmap.pix32(y, x + i) = palette[BIT(gfx, 7-i) ? (hlgt ? 2 : 1) : 0]; } /* F4 Character Displayer */ @@ -183,7 +343,7 @@ void rt1715_state::rt1715_palette(palette_device &palette) const { palette.set_pen_color(0, rgb_t(0x00, 0x00, 0x00)); // black palette.set_pen_color(1, rgb_t(0x00, 0x7f, 0x00)); // low intensity - palette.set_pen_color(2, rgb_t(0x00, 0xff, 0x00)); // high intensitiy + palette.set_pen_color(2, rgb_t(0x00, 0xff, 0x00)); // high intensity } @@ -197,17 +357,63 @@ void rt1715_state::rt1715_mem(address_map &map) map(0x0800, 0xffff).bankrw("bank2"); } -void rt1715_state::rt1715_io(address_map &map) +void rt1715_state::rt1715_base_io(address_map &map) { map.unmap_value_high(); map.global_mask(0xff); - map(0x00, 0x03).rw("a71", FUNC(z80pio_device::read_alt), FUNC(z80pio_device::write_alt)); - map(0x04, 0x07).rw("a72", FUNC(z80pio_device::read_alt), FUNC(z80pio_device::write_alt)); - map(0x08, 0x0b).rw("a30", FUNC(z80ctc_device::read), FUNC(z80ctc_device::write)); - map(0x0c, 0x0f).rw("a29", FUNC(z80sio_device::ba_cd_r), FUNC(z80sio_device::ba_cd_w)); - map(0x18, 0x19).rw("a26", FUNC(i8275_device::read), FUNC(i8275_device::write)); + map(0x08, 0x0b).rw(m_ctc0, FUNC(z80ctc_device::read), FUNC(z80ctc_device::write)); + map(0x0c, 0x0f).rw(m_sio0, FUNC(z80sio_device::ba_cd_r), FUNC(z80sio_device::ba_cd_w)); +// map(0x10, 0x13).rw(m_ctc1, FUNC(z80ctc_device::read), FUNC(z80ctc_device::write)); +// map(0x14, 0x17).rw(m_sio1, FUNC(z80sio_device::ba_cd_r), FUNC(z80sio_device::ba_cd_w)); + map(0x18, 0x19).rw(m_crtc, FUNC(i8275_device::read), FUNC(i8275_device::write)); +// map(0x2c, 0x2f) // LT107CS -- serial DSR? +// map(0x30, 0x33) // LT111CS -- serial SEL? (data rate selector) +} + +void rt1715_state::rt1715_io(address_map &map) +{ + rt1715_base_io(map); + + map(0x00, 0x03).rw("a71", FUNC(z80pio_device::read_alt), FUNC(z80pio_device::write_alt)); // floppy data + map(0x04, 0x07).rw("a72", FUNC(z80pio_device::read_alt), FUNC(z80pio_device::write_alt)); // floppy control/status map(0x20, 0x20).w(FUNC(rt1715_state::rt1715_floppy_enable)); - map(0x28, 0x28).w(FUNC(rt1715_state::rt1715_rom_disable)); +// map(0x24, 0x27).w(FUNC(rt1715_state::rt1715_rom_enable)); // MEMCS0 + map(0x28, 0x2b).w(FUNC(rt1715_state::rt1715_rom_disable)); // MEMCS1 +// map(0x34, 0x37) // BWSCS (read: memory start address, write: switch chargen) +} + +void rt1715_state::rt1715w_mem(address_map &map) +{ + map(0x0000, 0xffff).r(m_bankdev[0], FUNC(address_map_bank_device::read8)).w(m_bankdev[1], FUNC(address_map_bank_device::write8)); +} + +void rt1715_state::rt1715w_banked_mem(address_map &map) +{ + map(0x00000, 0x007ff).rom().region("ipl", 0); + map(0x02000, 0x02fff).ram().region("gfx", 0); + map(0x03000, 0x03fff).ram().share("videoram"); + map(0x04000, 0x0ffff).bankrw("bank2"); + map(0x10000, 0x4ffff).bankrw("bank3"); +} + +// rt1715w -- decoders A13, A14, page C +void rt1715_state::rt1715w_io(address_map &map) +{ + rt1715_base_io(map); + + map(0x00, 0x00).rw(m_dma, FUNC(z80dma_device::bus_r), FUNC(z80dma_device::bus_w)); // A2 + map(0x04, 0x07).rw(m_ctc2, FUNC(z80ctc_device::read), FUNC(z80ctc_device::write)); // A4 +// map(0x1a, 0x1b) // chargen write protection + map(0x1c, 0x1d).m(m_fdc, FUNC(i8272a_device::map)); + map(0x20, 0x23).w(FUNC(rt1715_state::rt1715w_krfd_w)); // KRFD -- FD-Steuerregister (A45) + map(0x24, 0x27).w(FUNC(rt1715_state::rt1715w_set_bank)); // BR (A62, A63) + map(0x28, 0x2b).w(FUNC(rt1715_state::rt1715w_floppy_motor)); // MOS + map(0x34, 0x37).portr("S8"); // KON -- Konfigurations-schalter FD (config switch -- A114, DIP S8) +// map(0x38, 0x3b) // SR (RST1) -- Ru:cksetzen von Flip-Flops im FD +// map(0x3c, 0x3f) // RST (RST2) -- Ru:cksetzen von Flip-Flops in V.24 (Pru:ftechnik) + // used via DMA only + map(0x40, 0x40).r(m_fdc, FUNC(i8272a_device::msr_r)); + map(0x41, 0x41).rw(m_fdc, FUNC(i8272a_device::dma_r), FUNC(i8272a_device::dma_w)); } void rt1715_state::k7658_mem(address_map &map) @@ -228,6 +434,34 @@ void rt1715_state::k7658_io(address_map &map) INPUT PORTS ***************************************************************************/ +static INPUT_PORTS_START( rt1715w ) + PORT_START("S8") + PORT_DIPNAME( 0x01, 0x01, "UNK0" ) + PORT_DIPSETTING( 0x01, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x02, 0x02, "UNK1" ) + PORT_DIPSETTING( 0x02, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x04, 0x04, "UNK2" ) + PORT_DIPSETTING( 0x04, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x08, 0x08, "UNK3" ) + PORT_DIPSETTING( 0x08, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x10, 0x10, "UNK4" ) + PORT_DIPSETTING( 0x10, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x20, 0x20, "UNK5" ) + PORT_DIPSETTING( 0x20, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x40, 0x40, "UNK6" ) + PORT_DIPSETTING( 0x40, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x80, 0x80, "UNK7" ) + PORT_DIPSETTING( 0x80, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) +INPUT_PORTS_END + static INPUT_PORTS_START( k7658 ) PORT_START("row_00") PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNUSED) @@ -274,57 +508,112 @@ INPUT_PORTS_END MACHINE DRIVERS ***************************************************************************/ -/* priority unknown */ +/* verify priority -- p. 14 of PC-1715-Servicemanual.pdf */ static const z80_daisy_config rt1715_daisy_chain[] = { { "a71" }, { "a72" }, - { "a30" }, - { "a29" }, + { "ctc0" }, + { "sio0" }, + { nullptr } +}; + +static const z80_daisy_config rt1715w_daisy_chain[] = +{ + { "ctc0" }, + { "sio0" }, { nullptr } }; -MACHINE_CONFIG_START(rt1715_state::rt1715) +static void rt1715w_floppies(device_slot_interface &device) +{ + device.option_add("525qd", FLOPPY_525_QD); +} + +void rt1715_state::rt1715(machine_config &config) +{ /* basic machine hardware */ Z80(config, m_maincpu, 9.832_MHz_XTAL / 4); m_maincpu->set_addrmap(AS_PROGRAM, &rt1715_state::rt1715_mem); m_maincpu->set_addrmap(AS_IO, &rt1715_state::rt1715_io); m_maincpu->set_daisy_config(rt1715_daisy_chain); + MCFG_MACHINE_START_OVERRIDE(rt1715_state, rt1715) + MCFG_MACHINE_RESET_OVERRIDE(rt1715_state, rt1715) + +#if 0 /* keyboard */ - MCFG_DEVICE_ADD("keyboard", Z80, 683000) - MCFG_DEVICE_PROGRAM_MAP(k7658_mem) - MCFG_DEVICE_IO_MAP(k7658_io) + z80_device &keyboard(Z80(config, "keyboard", 683000)); + keyboard.set_addrmap(AS_PROGRAM, &rt1715_state::k7658_mem); + keyboard.set_addrmap(AS_IO, &rt1715_state::k7658_io); +#endif /* video hardware */ - MCFG_SCREEN_ADD("screen", RASTER) - MCFG_SCREEN_UPDATE_DEVICE("a26", i8275_device, screen_update) - MCFG_SCREEN_RAW_PARAMS(13.824_MHz_XTAL, 864, 0, 624, 320, 0, 300) // ? + SCREEN(config, m_screen, SCREEN_TYPE_RASTER); + m_screen->set_screen_update("i8275", FUNC(i8275_device::screen_update)); + m_screen->set_raw(13.824_MHz_XTAL, 864, 0, 624, 320, 0, 300); // ? GFXDECODE(config, "gfxdecode", "palette", gfx_rt1715); PALETTE(config, "palette", FUNC(rt1715_state::rt1715_palette), 3); - MCFG_DEVICE_ADD("a26", I8275, 13.824_MHz_XTAL / 8) - MCFG_I8275_CHARACTER_WIDTH(8) - MCFG_I8275_DRAW_CHARACTER_CALLBACK_OWNER(rt1715_state, crtc_display_pixels) + I8275(config, m_crtc, 13.824_MHz_XTAL / 8); + m_crtc->set_character_width(8); + m_crtc->set_display_callback(FUNC(rt1715_state::crtc_display_pixels), this); + m_crtc->set_screen(m_screen); - z80ctc_device& ctc(Z80CTC(config, "a30", 9.832_MHz_XTAL / 4)); - ctc.zc_callback<0>().set("a29", FUNC(z80sio_device::txca_w)); - ctc.zc_callback<2>().set("a29", FUNC(z80sio_device::rxtxcb_w)); + /* keyboard */ + Z80SIO(config, m_sio0, 9.832_MHz_XTAL / 4); - Z80SIO(config, "a29", 9.832_MHz_XTAL / 4); + Z80CTC(config, m_ctc0, 9.832_MHz_XTAL / 4); + m_ctc0->zc_callback<0>().set(m_sio0, FUNC(z80sio_device::txca_w)); + m_ctc0->zc_callback<2>().set(m_sio0, FUNC(z80sio_device::rxtxcb_w)); /* floppy */ Z80PIO(config, "a71", 9.832_MHz_XTAL / 4); Z80PIO(config, "a72", 9.832_MHz_XTAL / 4); /* internal ram */ - RAM(config, RAM_TAG).set_default_size("64K").set_default_value(0x00); -MACHINE_CONFIG_END + RAM(config, m_ram).set_default_size("64K").set_default_value(0x00); +} -MACHINE_CONFIG_START(rt1715_state::rt1715w) +void rt1715_state::rt1715w(machine_config &config) +{ rt1715(config); -MACHINE_CONFIG_END + + m_maincpu->set_clock(15.9744_MHz_XTAL / 4); + m_maincpu->set_addrmap(AS_PROGRAM, &rt1715_state::rt1715w_mem); + m_maincpu->set_addrmap(AS_IO, &rt1715_state::rt1715w_io); + m_maincpu->set_daisy_config(rt1715w_daisy_chain); + + ADDRESS_MAP_BANK(config, "bankdev0").set_map(&rt1715_state::rt1715w_banked_mem).set_options(ENDIANNESS_BIG, 8, 19, 0x10000); + ADDRESS_MAP_BANK(config, "bankdev1").set_map(&rt1715_state::rt1715w_banked_mem).set_options(ENDIANNESS_BIG, 8, 19, 0x10000); + + MCFG_MACHINE_START_OVERRIDE(rt1715_state, rt1715w) + MCFG_MACHINE_RESET_OVERRIDE(rt1715_state, rt1715w) + + config.device_remove("a71"); + config.device_remove("a72"); + + m_crtc->drq_wr_callback().set(FUNC(rt1715_state::crtc_drq_w)); + + // operates in polled mode + I8272A(config, m_fdc, 8'000'000 / 4, false); + m_fdc->drq_wr_callback().set(m_dma, FUNC(z80dma_device::rdy_w)).invert(); + FLOPPY_CONNECTOR(config, "i8272:0", rt1715w_floppies, "525qd", floppy_image_device::default_floppy_formats); + FLOPPY_CONNECTOR(config, "i8272:1", rt1715w_floppies, "525qd", floppy_image_device::default_floppy_formats); + + Z80DMA(config, m_dma, 15.9744_MHz_XTAL / 4); + m_dma->out_busreq_callback().set(FUNC(rt1715_state::busreq_w)); + m_dma->out_int_callback().set(FUNC(rt1715_state::tc_w)); + m_dma->in_mreq_callback().set(FUNC(rt1715_state::memory_read_byte)); + m_dma->out_mreq_callback().set(FUNC(rt1715_state::memory_write_byte)); + m_dma->in_iorq_callback().set(FUNC(rt1715_state::io_read_byte)); + m_dma->out_iorq_callback().set(FUNC(rt1715_state::io_write_byte)); + + Z80CTC(config, m_ctc2, 15.9744_MHz_XTAL / 4); + + m_ram->set_default_size("256K"); +} /*************************************************************************** @@ -389,4 +678,4 @@ ROM_END // YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS COMP( 1986, rt1715, 0, 0, rt1715, k7658, rt1715_state, empty_init, "Robotron", "Robotron PC-1715", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW ) COMP( 1986, rt1715lc, rt1715, 0, rt1715, k7658, rt1715_state, empty_init, "Robotron", "Robotron PC-1715 (latin/cyrillic)", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW ) -COMP( 1986, rt1715w, rt1715, 0, rt1715w, k7658, rt1715_state, empty_init, "Robotron", "Robotron PC-1715W", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW ) +COMP( 1986, rt1715w, rt1715, 0, rt1715w, rt1715w, rt1715_state, empty_init, "Robotron", "Robotron PC-1715W", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW ) |