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-// 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)
-
-System Clock
- - is not a crystal, but instead an LC oscillator at 5 MHz
- - frequency divided by 2 to form the CPU clock.
- - bcs3b increased oscillator frequency to 7 MHz to handle 40 characters per line
-
-CTC channels
- - 0, 15625Hz, TV line sync
- - 1, 244Hz, scanline counter for character generator (976Hz on bcs3)
- - 2, 49Hz, TV frame sync
- - 3, 1Hz, not used
- During cassette save, ch 1 is disabled, which causes ch 2 and 3 to stop.
- Ch 0 will output pulses at a rate of 1220Hz while each bit is different from
- the last, or 2441Hz if bits are the same (1708 and 3417Hz for bcs3b).
- These pulses are fed to a flipflop to create a train of wide and narrow
- cycles, to be recorded onto the tape.
-
-Cassette
- - is hooked up according to the documentation, but doesn't work.
- - on the real machine it overrides the video output, so the video will
- be lost during cassette operations.
- - does not exist on "bcs3". The commands SAVE and LOAD will attempt to
- use a non-existing rom at 0800, and crash the system.
- - When you start any cassette-based system it asks for the number of lines
- you'd like on the screen, or hit enter for the default. Depending on the
- number, the BASIC program starts in a different place. So, to LOAD a tape,
- you must have the same number of lines that the program was SAVED at.
- - Recordings are not compatible between the versions of BASIC.
-
-Bugs:
- - Tell it to PRINT ! (or any character it doesn't understand) and the screen
- fills up with zeroes. String are enclosed in single quotes. Double quotes
- will cause this bug.
- - Undefined strings print as 0 instead of nothing.
-
-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 "emupal.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_screen(*this, "screen")
- , 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)
- { }
-
- void bcs3(machine_config &config);
- void bcs3a(machine_config &config);
- void bcs3b(machine_config &config);
- void init_bcs3a();
- void init_bcs3b();
- void init_bcs3c();
- void init_bcs3d();
-
-private:
- 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);
- 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 bcs3_io(address_map &map);
- void bcs3_mem(address_map &map);
- void bcs3a_mem(address_map &map);
- bool m_cassbit;
- u8 s_curs;
- u8 s_init;
- u8 s_rows;
- u8 s_cols;
-
- required_device<z80_device> m_maincpu;
- required_device<screen_device> m_screen;
- required_device<z80ctc_device> m_ctc;
- required_region_ptr<u8> m_p_chargen;
- required_shared_ptr<u8> m_p_videoram;
- optional_device<cassette_image_device> m_cass;
- required_ioport_array<10> m_io_keyboard;
-};
-
-READ8_MEMBER( bcs3_state::keyboard_r )
-{
- u8 i, data = 0;
-
- if (offset == 0 && m_cass)
- 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(FUNC(bcs3_state::keyboard_r));
- map(0x1400, 0x17ff).mirror(0x2000).noprw(); // /WAIT circuit
- map(0x1800, 0x1bff).mirror(0x2000).r(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(FUNC(bcs3_state::keyboard_r));
- map(0x1400, 0x17ff).mirror(0x2000).noprw(); // /WAIT circuit
- map(0x1800, 0x1bff).mirror(0x2000).r(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)
- {
- m_cassbit ^= 1;
- m_cass->output(m_cassbit ? -1.0 : +1.0);
- }
-}
-
-// The manual says the cassette pulses come from here, but
-// it's total silence during cassette saving.
-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;
-}
-
-void bcs3_state::bcs3(machine_config &config)
-{
- /* basic machine hardware */
- Z80(config, m_maincpu, XTAL(5'000'000) /2);
- m_maincpu->set_addrmap(AS_PROGRAM, &bcs3_state::bcs3_mem);
- m_maincpu->set_addrmap(AS_IO, &bcs3_state::bcs3_io);
- m_maincpu->set_daisy_config(daisy_chain_intf);
-
- /* video hardware */
- SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
- m_screen->set_refresh_hz(50);
- m_screen->set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
- m_screen->set_size(28*8, 12*10);
- m_screen->set_visarea_full();
- m_screen->set_screen_update(FUNC(bcs3_state::screen_update_bcs3));
- m_screen->set_palette("palette");
- GFXDECODE(config, "gfxdecode", "palette", gfx_bcs3);
- PALETTE(config, "palette", palette_device::MONOCHROME);
-
- Z80CTC(config, m_ctc, XTAL(5'000'000) / 2);
- m_ctc->intr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
- m_ctc->zc_callback<0>().set(FUNC(bcs3_state::ctc_z0_w));
- m_ctc->zc_callback<1>().set(FUNC(bcs3_state::ctc_z1_w));
-}
-
-void bcs3_state::bcs3a(machine_config &config)
-{
- bcs3(config);
- m_maincpu->set_addrmap(AS_PROGRAM, &bcs3_state::bcs3a_mem);
- m_screen->set_size(29*8, 12*10);
- m_screen->set_visarea(0, 29*8-1, 0, 12*10-1);
- m_screen->set_screen_update(FUNC(bcs3_state::screen_update_bcs3a));
-
- /* sound hardware */
- SPEAKER(config, "mono").front_center();
-
- CASSETTE(config, m_cass);
- m_cass->set_default_state(CASSETTE_STOPPED | CASSETTE_SPEAKER_ENABLED | CASSETTE_MOTOR_ENABLED);
- m_cass->add_route(ALL_OUTPUTS, "mono", 0.05);
-}
-
-void bcs3_state::bcs3b(machine_config &config)
-{
- /* basic machine hardware */
- Z80(config, m_maincpu, XTAL(7'000'000) /2);
- m_maincpu->set_addrmap(AS_PROGRAM, &bcs3_state::bcs3a_mem);
- m_maincpu->set_addrmap(AS_IO, &bcs3_state::bcs3_io);
- m_maincpu->set_daisy_config(daisy_chain_intf);
-
- /* video hardware */
- SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
- m_screen->set_refresh_hz(50);
- m_screen->set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
- m_screen->set_size(40*8, 24*10);
- m_screen->set_visarea_full();
- m_screen->set_screen_update(FUNC(bcs3_state::screen_update_bcs3a));
- m_screen->set_palette("palette");
- GFXDECODE(config, "gfxdecode", "palette", gfx_bcs3);
- PALETTE(config, "palette", palette_device::MONOCHROME);
-
- Z80CTC(config, m_ctc, XTAL(7'000'000) / 2);
- m_ctc->intr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
- m_ctc->zc_callback<0>().set(FUNC(bcs3_state::ctc_z0_w));
- m_ctc->zc_callback<1>().set(FUNC(bcs3_state::ctc_z1_w));
-
- /* sound hardware */
- SPEAKER(config, "mono").front_center();
-
- CASSETTE(config, m_cass);
- m_cass->set_default_state(CASSETTE_STOPPED | CASSETTE_SPEAKER_ENABLED | CASSETTE_MOTOR_ENABLED);
- m_cass->add_route(ALL_OUTPUTS, "mono", 0.05);
-}
-
-
-/* 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) )
- // Cassette rom goes here starting at 0x0800 ... but did this rom ever exist??
-
- 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_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 )