// license:BSD-3-Clause // copyright-holders:Robbbert /*************************************************************************** BCS 3 2009-05-12 Skeleton driver. 2015-09-25 Improvements http://hc-ddr.hucki.net/wiki/doku.php/homecomputer:bcs3 East German home built computer. No sound facilities. All documents are in German. Main CPU is a U880 (Z80 equivalent). Other ICs also have unusual names. The CTC sends an interrupt every so often. This uses a lookup table to jump to an address in the range 38xx-39xx. This seems to work much the same as reading video memory in the ZX80. This, I think, is to stop snow appearing on the screen. It also slows everything down noticeably. It appears that a read of 1400 activates the Z80's /WAIT pin. This will be released by a VS pulse. (Not emulated) Cassette is hooked up according to the documentation, but it doesn't work. Known Memory Map: 0000 - 0FFF: Main ROM 1000 - 13FF: Keyboard 1400 - 17FF: /WAIT circuit 1800 - 1BFF: Output one character's scanline to the monitor. ZX-video process. 1C00 - 1FFF: Video RAM 2000 - 3FFF: Mirror of 0000 - 1FFF. 4000 - up : Extra RAM (required for hack versions) Hack versions: - They are fitted with Basic 3.x, require more RAM, and use hardware scrolling. - No schematic has been found, so the code is educated guesswork. - The ZX process is still to be worked out. For now, we return 0xF7 to finish. - There is a machine-language monitor fitted to some models. To access: -- Y = USR(0F000H) -- Commands are S (substitute), M (move), T (test), G (go), Q (quit) To Do: - Need software - Fix cassette - Hack versions: fix the ZX process ****************************************************************************/ #include "emu.h" #include "cpu/z80/z80.h" #include "machine/z80daisy.h" #include "machine/z80ctc.h" #include "imagedev/cassette.h" #include "screen.h" #include "speaker.h" class bcs3_state : public driver_device { public: bcs3_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") , m_ctc(*this, "ctc") , m_p_chargen(*this, "chargen") , m_p_videoram(*this, "videoram") , m_cass(*this, "cassette") , m_io_keyboard(*this, "KEY.%u", 0) { } DECLARE_READ8_MEMBER(keyboard_r); DECLARE_READ8_MEMBER(video_r); DECLARE_READ8_MEMBER(zx_r); DECLARE_WRITE_LINE_MEMBER(ctc_z0_w); DECLARE_WRITE_LINE_MEMBER(ctc_z1_w); void init_bcs3a(); void init_bcs3b(); void init_bcs3c(); void init_bcs3d(); u32 screen_update_bcs3(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); u32 screen_update_bcs3a(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); void bcs3a(machine_config &config); void bcs3(machine_config &config); void bcs3b(machine_config &config); void bcs3_io(address_map &map); void bcs3_mem(address_map &map); void bcs3a_mem(address_map &map); private: bool m_cass_bit; u8 s_curs; u8 s_init; u8 s_rows; u8 s_cols; required_device m_maincpu; required_device m_ctc; required_region_ptr m_p_chargen; required_shared_ptr m_p_videoram; required_device m_cass; required_ioport_array<10> m_io_keyboard; }; READ8_MEMBER( bcs3_state::keyboard_r ) { u8 i, data = 0; if (offset == 0) data = (m_cass->input() > +0.01) ? 0x80 : 0; offset ^= 0x3ff; for (i = 0; i < 10; i++) if (BIT(offset, i)) data |= m_io_keyboard[i]->read(); return data; } // 00-7F = NUL, 0xE0 = end of line. READ8_MEMBER( bcs3_state::video_r ) { u8 data = m_p_videoram[offset]; return BIT(data, 7) ? data : 0; } // Unsure of how this works. // 00-7F = NUL, 0xFF = end of line, 0xF7 = finish. READ8_MEMBER( bcs3_state::zx_r ) { return 0xf7; } void bcs3_state::bcs3_mem(address_map &map) { map.unmap_value_high(); map(0x0000, 0x0fff).mirror(0x2000).rom().region("roms", 0); map(0x1000, 0x13ff).mirror(0x2000).r(this, FUNC(bcs3_state::keyboard_r)); map(0x1400, 0x17ff).mirror(0x2000).noprw(); // /WAIT circuit map(0x1800, 0x1bff).mirror(0x2000).r(this, FUNC(bcs3_state::video_r)); map(0x1c00, 0x1fff).mirror(0x2000).ram().share("videoram"); } void bcs3_state::bcs3a_mem(address_map &map) { map.unmap_value_high(); map(0x0000, 0x0fff).mirror(0x2000).rom().region("roms", 0); map(0x1000, 0x13ff).mirror(0x2000).r(this, FUNC(bcs3_state::keyboard_r)); map(0x1400, 0x17ff).mirror(0x2000).noprw(); // /WAIT circuit map(0x1800, 0x1bff).mirror(0x2000).r(this, FUNC(bcs3_state::zx_r)); map(0x3c00, 0x7fff).ram().share("videoram"); map(0xf000, 0xf3ff).rom().region("roms", 0x1000); } void bcs3_state::bcs3_io(address_map &map) { map.unmap_value_high(); map.global_mask(3); // coded in the rom as F8 to FB map(0x00, 0x03).rw(m_ctc, FUNC(z80ctc_device::read), FUNC(z80ctc_device::write)); } /* Input ports */ static INPUT_PORTS_START( bcs3 ) PORT_START("KEY.0") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("U") PORT_CODE(KEYCODE_U) PORT_CHAR('U') PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("K :") PORT_CODE(KEYCODE_K) PORT_CHAR('K') PORT_CHAR(':') PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("A &") PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("0") PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_START("KEY.1") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("V") PORT_CODE(KEYCODE_V) PORT_CHAR('V') PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("L ;") PORT_CODE(KEYCODE_L) PORT_CHAR('L') PORT_CHAR(';') PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("B '") PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("1 !") PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') PORT_START("KEY.2") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("W") PORT_CODE(KEYCODE_W) PORT_CHAR('W') PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("M <") PORT_CODE(KEYCODE_M) PORT_CHAR('M') PORT_CHAR('<') PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("C (") PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("2 \"") PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR(34) PORT_START("KEY.3") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("X") PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("N =") PORT_CODE(KEYCODE_N) PORT_CHAR('N') PORT_CHAR('=') PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("D )") PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("3 #") PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') PORT_START("KEY.4") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Y") PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("O >") PORT_CODE(KEYCODE_O) PORT_CHAR('O') PORT_CHAR('>') PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("E *") PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_CHAR('*') PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("4 $") PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') PORT_START("KEY.5") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Z") PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("P") PORT_CODE(KEYCODE_P) PORT_CHAR('P') PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("F +") PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_CHAR('+') PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("5 %") PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') PORT_START("KEY.6") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Space") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(32) PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Q") PORT_CODE(KEYCODE_Q) PORT_CHAR('Q') PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("G ,") PORT_CODE(KEYCODE_G) PORT_CHAR('G') PORT_CHAR(',') PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("6 &") PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&') PORT_START("KEY.7") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Backspace") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("R") PORT_CODE(KEYCODE_R) PORT_CHAR('R') PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("H -") PORT_CODE(KEYCODE_H) PORT_CHAR('H') PORT_CHAR('-') PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("7 '") PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR(39) PORT_START("KEY.8") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Enter") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("S") PORT_CODE(KEYCODE_S) PORT_CHAR('S') PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("I .") PORT_CODE(KEYCODE_I) PORT_CHAR('I') PORT_CHAR('.') PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("8 (") PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(') PORT_START("KEY.9") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Shift") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1) PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("T") PORT_CODE(KEYCODE_T) PORT_CHAR('T') PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("J /") PORT_CODE(KEYCODE_J) PORT_CHAR('J') PORT_CHAR('/') PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("9 )") PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')') INPUT_PORTS_END // Official version u32 bcs3_state::screen_update_bcs3(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { u8 y,ra,chr,gfx,rat; u16 sy=0,ma=0x50,x; for (y = 0; y < 12; y++) { for (ra = 0; ra < 10; ra++) { uint16_t *p = &bitmap.pix16(sy++); rat = (ra + 1) & 7; for (x = ma; x < ma + 28; x++) { if (ra < 8) { chr = m_p_videoram[x] & 0x7f; /* get pattern of pixels for that character scanline */ gfx = m_p_chargen[(chr<<3) | rat ] ^ 0xff; } else gfx = 0xff; /* Display a scanline of a character (8 pixels) */ *p++ = BIT(gfx, 7); *p++ = BIT(gfx, 6); *p++ = BIT(gfx, 5); *p++ = BIT(gfx, 4); *p++ = BIT(gfx, 3); *p++ = BIT(gfx, 2); *p++ = BIT(gfx, 1); *p++ = BIT(gfx, 0); } } ma+=28; } return 0; } /* Hacks: When it starts, it has 4 lines of data. Pressing enter causes it to allocate 100 lines. I'm assuming that it only shows a portion of this, with the cursor always in sight. */ u32 bcs3_state::screen_update_bcs3a(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { u8 y,ra,chr,gfx,rat; u16 sy = 0, ma = s_init, x; u16 cursor = (m_p_videoram[s_curs] | (m_p_videoram[s_curs+1] << 8)) - 0x3c00 - ma; // get cursor relative position rat = cursor / (s_cols+1); if (rat > (s_rows-1)) ma += (rat-(s_rows-1)) * (s_cols+1); for (y = 0; y < s_rows; y++) { for (ra = 0; ra < 10; ra++) { uint16_t *p = &bitmap.pix16(sy++); rat = (ra + 1) & 7; for (x = ma; x < ma + s_cols; x++) { if (ra < 8) { chr = m_p_videoram[x] & 0x7f; /* get pattern of pixels for that character scanline */ gfx = m_p_chargen[(chr<<3) | rat ] ^ 0xff; } else gfx = 0xff; /* Display a scanline of a character (8 pixels) */ *p++ = BIT(gfx, 7); *p++ = BIT(gfx, 6); *p++ = BIT(gfx, 5); *p++ = BIT(gfx, 4); *p++ = BIT(gfx, 3); *p++ = BIT(gfx, 2); *p++ = BIT(gfx, 1); *p++ = BIT(gfx, 0); } } ma+=(s_cols+1); } return 0; } /* F4 Character Displayer */ static const gfx_layout bcs3_charlayout = { 8, 8, /* 8 x 8 characters */ 128, /* 128 characters */ 1, /* 1 bits per pixel */ { 0 }, /* no bitplanes */ /* x offsets */ { 0, 1, 2, 3, 4, 5, 6, 7 }, /* y offsets */ { 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 0*8 }, 8*8 /* every char takes 8 bytes */ }; static GFXDECODE_START( gfx_bcs3 ) GFXDECODE_ENTRY( "chargen", 0x0000, bcs3_charlayout, 0, 1 ) GFXDECODE_END WRITE_LINE_MEMBER( bcs3_state::ctc_z0_w ) { m_ctc->trg1(state); if (state) { m_cass_bit ^= 1; m_cass->output(m_cass_bit ? -1.0 : +1.0); } } WRITE_LINE_MEMBER( bcs3_state::ctc_z1_w ) { m_ctc->trg2(state); } static const z80_daisy_config daisy_chain_intf[] = { { "ctc" }, { nullptr } }; void bcs3_state::init_bcs3a() { s_curs = 0x7a; s_init = 0x80; s_rows = 12; s_cols = 29; } void bcs3_state::init_bcs3b() { s_curs = 0x7a; s_init = 0x80; s_rows = 24; s_cols = 40; } void bcs3_state::init_bcs3c() { s_curs = 0x08; s_init = 0xa0; s_rows = 12; s_cols = 29; } void bcs3_state::init_bcs3d() { s_curs = 0x08; s_init = 0xb4; s_rows = 12; s_cols = 29; } MACHINE_CONFIG_START(bcs3_state::bcs3) /* basic machine hardware */ MCFG_DEVICE_ADD("maincpu", Z80, XTAL(5'000'000) /2) MCFG_DEVICE_PROGRAM_MAP(bcs3_mem) MCFG_DEVICE_IO_MAP(bcs3_io) MCFG_Z80_DAISY_CHAIN(daisy_chain_intf) /* video hardware */ MCFG_SCREEN_ADD("screen", RASTER) MCFG_SCREEN_REFRESH_RATE(50) MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */ MCFG_SCREEN_SIZE(28*8, 12*10) MCFG_SCREEN_VISIBLE_AREA(0,28*8-1,0,12*10-1) MCFG_SCREEN_UPDATE_DRIVER(bcs3_state, screen_update_bcs3) MCFG_SCREEN_PALETTE("palette") MCFG_DEVICE_ADD("gfxdecode", GFXDECODE, "palette", gfx_bcs3) MCFG_PALETTE_ADD_MONOCHROME("palette") MCFG_DEVICE_ADD("ctc", Z80CTC, XTAL(5'000'000) / 2) MCFG_Z80CTC_INTR_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0)) MCFG_Z80CTC_ZC0_CB(WRITELINE(*this, bcs3_state, ctc_z0_w)) MCFG_Z80CTC_ZC1_CB(WRITELINE(*this, bcs3_state, ctc_z1_w)) MCFG_CASSETTE_ADD( "cassette" ) MACHINE_CONFIG_END MACHINE_CONFIG_START(bcs3_state::bcs3a) /* basic machine hardware */ MCFG_DEVICE_ADD("maincpu", Z80, XTAL(7'000'000) /2) MCFG_DEVICE_PROGRAM_MAP(bcs3a_mem) MCFG_DEVICE_IO_MAP(bcs3_io) MCFG_Z80_DAISY_CHAIN(daisy_chain_intf) /* video hardware */ MCFG_SCREEN_ADD("screen", RASTER) MCFG_SCREEN_REFRESH_RATE(50) MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */ MCFG_SCREEN_SIZE(29*8, 12*10) MCFG_SCREEN_VISIBLE_AREA(0,29*8-1,0,12*10-1) MCFG_SCREEN_UPDATE_DRIVER(bcs3_state, screen_update_bcs3a) MCFG_SCREEN_PALETTE("palette") MCFG_DEVICE_ADD("gfxdecode", GFXDECODE, "palette", gfx_bcs3) MCFG_PALETTE_ADD_MONOCHROME("palette") MCFG_DEVICE_ADD("ctc", Z80CTC, XTAL(7'000'000) / 2) MCFG_Z80CTC_INTR_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0)) MCFG_Z80CTC_ZC0_CB(WRITELINE(*this, bcs3_state, ctc_z0_w)) MCFG_Z80CTC_ZC1_CB(WRITELINE(*this, bcs3_state, ctc_z1_w)) MCFG_CASSETTE_ADD( "cassette" ) MACHINE_CONFIG_END MACHINE_CONFIG_START(bcs3_state::bcs3b) bcs3a(config); MCFG_SCREEN_MODIFY("screen") MCFG_SCREEN_SIZE(40*8, 24*10) MCFG_SCREEN_VISIBLE_AREA(0,40*8-1,0,24*10-1) MACHINE_CONFIG_END /* ROM definition */ ROM_START( bcs3 ) ROM_REGION( 0x2000, "roms", ROMREGION_ERASEFF ) //ROM_LOAD( "se24.bin", 0x0000, 0x0800, CRC(268de5ee) SHA1(78784945956c1b0282a4e82ad55e7c3a77389e50)) ROM_LOAD( "se24_000.d6", 0x0000, 0x0400, CRC(157a0d28) SHA1(0a6666c289b95d98128fd282478dff6319031b6e) ) ROM_LOAD( "se24_400.d7", 0x0400, 0x0400, CRC(2159de0f) SHA1(09b567e750931019de914f25d5ab1e4910465de6) ) ROM_REGION( 0x0400, "chargen", 0 ) ROM_LOAD( "bcs_zg_24.d21", 0x0000, 0x0400, CRC(eaed9d84) SHA1(7023a6187cd6bd0c6489d76ff662453f14e5b636)) ROM_END ROM_START( bcs3a ) ROM_REGION( 0x2000, "roms", ROMREGION_ERASEFF ) //ROM_LOAD( "se31_29.bin", 0x0000, 0x1000, CRC(e9b55544) SHA1(82bae68c4bcaecf66632f5b43913b50a1acba316)) ROM_LOAD( "se31_000.d6", 0x0000, 0x0400, CRC(0765bd83) SHA1(137ceffd50eeaf21caab286d3e01161ba3267ea4) ) ROM_LOAD( "se31_400.d7", 0x0400, 0x0400, CRC(1a87a3ed) SHA1(c8121ff198f8cf0c7bc7bc7e258ecfa51d3bb02c) ) ROM_LOAD( "se31_800.d8", 0x0800, 0x0400, CRC(05654a8f) SHA1(b42fa6cf5710dab23f062dbeea81e85b4c18e1b0) ) ROM_LOAD( "se31_c00.d9", 0x0c00, 0x0400, CRC(858ca28b) SHA1(90f943b0c1d102dd058a859ba139057a0bd278a6) ) ROM_LOAD( "se31mceditor.bin", 0x1000, 0x0400, CRC(8eac92ec) SHA1(8950a3ef05d02abf34269bfce002c46d273ce113)) ROM_REGION( 0x0400, "chargen", 0 ) ROM_LOAD( "bcs_zg_31.d21", 0x0000, 0x0400, CRC(a20c93c9) SHA1(b2be1c0d98b7ac05713349b099b392975968be1d)) ROM_END ROM_START( bcs3b ) ROM_REGION( 0x2000, "roms", ROMREGION_ERASEFF ) ROM_LOAD( "se31_40.bin", 0x0000, 0x1000, CRC(4e993152) SHA1(6bb01ff5779627fa2eb2df432fffcfccc1e33231)) ROM_LOAD( "se31mceditor.bin", 0x1000, 0x0400, CRC(8eac92ec) SHA1(8950a3ef05d02abf34269bfce002c46d273ce113)) ROM_REGION( 0x0400, "chargen", 0 ) ROM_LOAD( "bcs_zg_31.d21", 0x0000, 0x0400, CRC(a20c93c9) SHA1(b2be1c0d98b7ac05713349b099b392975968be1d)) ROM_END ROM_START( bcs3c ) ROM_REGION( 0x2000, "roms", ROMREGION_ERASEFF ) ROM_LOAD( "bcs32.bin", 0x0000, 0x1000, CRC(1523b846) SHA1(ca5e3213707a604e02d9e7a7ebfc362ef294ddb8) ) ROM_REGION( 0x0400, "chargen", 0 ) ROM_LOAD( "bcs_zg_32.d21", 0x0000, 0x0400, CRC(abe9e820) SHA1(03a8792d08774cd67b98efd3f83a78e897b4e001) ) ROM_END ROM_START( bcs3d ) ROM_REGION( 0x2000, "roms", ROMREGION_ERASEFF ) ROM_LOAD( "sp33_29.bin", 0x0000, 0x1000, CRC(1c851eb2) SHA1(4f8bb5274ea1861a35a840e8f3482bdc693047c4)) ROM_REGION( 0x0400, "chargen", 0 ) ROM_LOAD( "bcs_zg_33.d21", 0x0000, 0x0400, CRC(b27f1c07) SHA1(61c80c585f198370ba5e856839c12b15acdc58ee)) ROM_END /* Driver */ /* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */ COMP( 1984, bcs3, 0, 0, bcs3, bcs3, bcs3_state, empty_init, "Eckhard Schiller", "BCS 3 rev 2.4", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW ) COMP( 1986, bcs3a, bcs3, 0, bcs3a, bcs3, bcs3_state, init_bcs3a, "Eckhard Schiller", "BCS 3 rev 3.1 29-column", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW ) COMP( 1986, bcs3b, bcs3, 0, bcs3b, bcs3, bcs3_state, init_bcs3b, "Eckhard Schiller", "BCS 3 rev 3.1 40-column", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW ) COMP( 1986, bcs3c, bcs3, 0, bcs3a, bcs3, bcs3_state, init_bcs3c, "Eckhard Schiller", "BCS 3 rev 3.2", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW ) COMP( 1986, bcs3d, bcs3, 0, bcs3a, bcs3, bcs3_state, init_bcs3d, "Eckhard Schiller", "BCS 3 rev 3.3", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW )