diff options
Diffstat (limited to 'src/mess/drivers/bcs3.c')
-rw-r--r-- | src/mess/drivers/bcs3.c | 508 |
1 files changed, 508 insertions, 0 deletions
diff --git a/src/mess/drivers/bcs3.c b/src/mess/drivers/bcs3.c new file mode 100644 index 00000000000..26801668a69 --- /dev/null +++ b/src/mess/drivers/bcs3.c @@ -0,0 +1,508 @@ +/*************************************************************************** + + BCS 3 + + 12/05/2009 Skeleton driver. + + Everything in this driver has been worked out by reading the + ROM and using the debugger, as no information is available. + + Therefore, it is likely to be full of mistakes and omissions. + + Note: The $ key makes a square symbol. + +****************************************************************************/ + +#include "emu.h" +#include "cpu/z80/z80.h" + +#define MACHINE_RESET_MEMBER(name) void name::machine_reset() +#define VIDEO_START_MEMBER(name) void name::video_start() + +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_p_videoram(*this, "videoram"){ } + + required_device<cpu_device> m_maincpu; + const UINT8 *m_p_chargen; + required_shared_ptr<const UINT8> m_p_videoram; + DECLARE_READ8_MEMBER(bcs3_keyboard_r); + virtual void machine_reset(); + virtual void video_start(); +}; + +READ8_MEMBER( bcs3_state::bcs3_keyboard_r ) +{ + UINT8 data = 0; + + if (~offset & 0x01) + data |= ioport("LINE0")->read(); + if (~offset & 0x02) + data |= ioport("LINE1")->read(); + if (~offset & 0x04) + data |= ioport("LINE2")->read(); + if (~offset & 0x08) + data |= ioport("LINE3")->read(); + if (~offset & 0x10) + data |= ioport("LINE4")->read(); + if (~offset & 0x20) + data |= ioport("LINE5")->read(); + if (~offset & 0x40) + data |= ioport("LINE6")->read(); + if (~offset & 0x80) + data |= ioport("LINE7")->read(); + if (~offset & 0x100) + data |= ioport("LINE8")->read(); + + return data; +} + +static ADDRESS_MAP_START(bcs3_mem, AS_PROGRAM, 8, bcs3_state) + ADDRESS_MAP_UNMAP_HIGH + AM_RANGE( 0x0000, 0x0fff ) AM_ROM + AM_RANGE( 0x1000, 0x11ff ) AM_READ_PORT("LINE9") + AM_RANGE( 0x1200, 0x13ff ) AM_READ(bcs3_keyboard_r) + AM_RANGE( 0x3c00, 0xffff ) AM_RAM + AM_RANGE( 0x3c50, 0x3d9f ) AM_RAM AM_SHARE("videoram") +ADDRESS_MAP_END + +static ADDRESS_MAP_START(bcs3a_mem, AS_PROGRAM, 8, bcs3_state) + ADDRESS_MAP_UNMAP_HIGH + AM_RANGE( 0x0000, 0x0fff ) AM_ROM + AM_RANGE( 0x1000, 0x11ff ) AM_READ_PORT("LINE9") + AM_RANGE( 0x1200, 0x13ff ) AM_READ(bcs3_keyboard_r) + AM_RANGE( 0x3c00, 0xefff ) AM_RAM + AM_RANGE( 0x3c00, 0x5a7f ) AM_RAM AM_SHARE("videoram") + AM_RANGE( 0xf000, 0xf3ff ) AM_ROM +ADDRESS_MAP_END + +static ADDRESS_MAP_START(bcs3b_mem, AS_PROGRAM, 8, bcs3_state) + ADDRESS_MAP_UNMAP_HIGH + AM_RANGE( 0x0000, 0x0fff ) AM_ROM + AM_RANGE( 0x1000, 0x11ff ) AM_READ_PORT("LINE9") + AM_RANGE( 0x1200, 0x13ff ) AM_READ(bcs3_keyboard_r) + AM_RANGE( 0x3c00, 0xefff ) AM_RAM + AM_RANGE( 0x3c00, 0x657f ) AM_RAM AM_SHARE("videoram") + AM_RANGE( 0xf000, 0xf3ff ) AM_ROM +ADDRESS_MAP_END + +static ADDRESS_MAP_START(bcs3c_mem, AS_PROGRAM, 8, bcs3_state) + ADDRESS_MAP_UNMAP_HIGH + AM_RANGE( 0x0000, 0x0fff ) AM_ROM + AM_RANGE( 0x1000, 0x11ff ) AM_READ_PORT("LINE9") + AM_RANGE( 0x1200, 0x13ff ) AM_READ(bcs3_keyboard_r) + AM_RANGE( 0x3c00, 0xffff ) AM_RAM + AM_RANGE( 0x3c00, 0x5ab3 ) AM_RAM AM_SHARE("videoram") +ADDRESS_MAP_END + +static ADDRESS_MAP_START( bcs3_io, AS_IO, 8, bcs3_state) + ADDRESS_MAP_UNMAP_HIGH + ADDRESS_MAP_GLOBAL_MASK(0xff) +// AM_RANGE( 0xf8, 0xfb ) AM_DEVREADWRITE(Z80CTC,"z80ctc",z80ctc_r,z80ctc_w) +ADDRESS_MAP_END + +/* Input ports */ +static INPUT_PORTS_START( bcs3 ) + PORT_START("LINE0") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("U") PORT_CODE(KEYCODE_U) PORT_CHAR('H') + 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_CHAR('&') + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("0") PORT_CODE(KEYCODE_0) PORT_CHAR('O') + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_UNUSED) + + PORT_START("LINE1") + 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_CHAR(39) + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("1 !") PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_UNUSED) + + PORT_START("LINE2") + 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_CHAR('(') + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("2 \"") PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR(34) + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_UNUSED) + + PORT_START("LINE3") + 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_CHAR(')') + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("3 #") PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_UNUSED) + + PORT_START("LINE4") + 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_BIT(0x10, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_UNUSED) + + PORT_START("LINE5") + 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_BIT(0x10, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_UNUSED) + + PORT_START("LINE6") + 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_BIT(0x10, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_UNUSED) + + PORT_START("LINE7") + 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_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("7 '") PORT_CODE(KEYCODE_7) PORT_CHAR('7') + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_UNUSED) + + PORT_START("LINE8") + 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_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("8 (") PORT_CODE(KEYCODE_8) PORT_CHAR('8') + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_UNUSED) + + PORT_START("LINE9") + 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_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("9 )") PORT_CODE(KEYCODE_9) PORT_CHAR('9') + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_UNUSED) // cassette read bit +INPUT_PORTS_END + + +MACHINE_RESET_MEMBER(bcs3_state) +{ +} + +VIDEO_START_MEMBER( bcs3_state ) +{ + m_p_chargen = memregion("chargen")->base(); +} + +static SCREEN_UPDATE_IND16( bcs3 ) +{ + bcs3_state *state = screen.machine().driver_data<bcs3_state>(); + UINT8 y,ra,chr,gfx,rat; + UINT16 sy=0,ma=0,x; + + for (y = 0; y < 12; y++) + { + for (ra = 0; ra < 10; ra++) + { + UINT16 *p = &bitmap.pix16(sy++); + rat = (ra + 1) & 7; + + for (x = ma; x < ma + 28; x++) + { + if (ra < 8) + { + chr = state->m_p_videoram[x] & 0x7f; + + /* get pattern of pixels for that character scanline */ + gfx = state->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; +} + +/* This has 100 lines of screen data. I'm assuming that it only shows a portion of this, + with the cursor always in sight. */ +static SCREEN_UPDATE_IND16( bcs3a ) +{ + bcs3_state *state = screen.machine().driver_data<bcs3_state>(); + UINT8 y,ra,chr,gfx,rat; + UINT16 sy=0,ma=128,x; + UINT16 cursor = (state->m_p_videoram[0x7a] | (state->m_p_videoram[0x7b] << 8)) - 0x3c80; // get cursor relative position + rat = cursor / 30; + if (rat > 11) ma = (rat-11) * 30 + 128; + + for (y = 0; y < 12; y++) + { + for (ra = 0; ra < 10; ra++) + { + UINT16 *p = &bitmap.pix16(sy++); + rat = (ra + 1) & 7; + + for (x = ma; x < ma + 29; x++) + { + if (ra < 8) + { + chr = state->m_p_videoram[x] & 0x7f; + + /* get pattern of pixels for that character scanline */ + gfx = state->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+=30; + } + return 0; +} + +static SCREEN_UPDATE_IND16( bcs3b ) +{ + bcs3_state *state = screen.machine().driver_data<bcs3_state>(); + UINT8 y,ra,chr,gfx,rat; + UINT16 sy=0,ma=128,x; + UINT16 cursor = (state->m_p_videoram[0x7a] | (state->m_p_videoram[0x7b] << 8)) - 0x3c80; // get cursor relative position + rat = cursor / 41; + if (rat > 23) ma = (rat-23) * 41 + 128; + + for (y = 0; y < 24; y++) + { + for (ra = 0; ra < 10; ra++) + { + UINT16 *p = &bitmap.pix16(sy++); + rat = (ra + 1) & 7; + + for (x = ma; x < ma + 40; x++) + { + if (ra < 8) + { + chr = state->m_p_videoram[x] & 0x7f; + + /* get pattern of pixels for that character scanline */ + gfx = state->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+=41; + } + return 0; +} + +static SCREEN_UPDATE_IND16( bcs3c ) +{ + bcs3_state *state = screen.machine().driver_data<bcs3_state>(); + UINT8 y,ra,chr,gfx,rat; + UINT16 sy=0,ma=0xb4,x; + UINT16 cursor = (state->m_p_videoram[0x08] | (state->m_p_videoram[0x09] << 8)) - 0x3c80; // get cursor relative position + rat = cursor / 30; + if (rat > 11) ma = (rat-11) * 30 + 0xb4; + + for (y = 0; y < 12; y++) + { + for (ra = 0; ra < 10; ra++) + { + UINT16 *p = &bitmap.pix16(sy++); + rat = (ra + 1) & 7; + + for (x = ma; x < ma + 29; x++) + { + if (ra < 8) + { + chr = state->m_p_videoram[x] & 0x7f; + + /* get pattern of pixels for that character scanline */ + gfx = state->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+=30; + } + 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( bcs3 ) + GFXDECODE_ENTRY( "chargen", 0x0000, bcs3_charlayout, 0, 1 ) +GFXDECODE_END + + +static MACHINE_CONFIG_START( bcs3, bcs3_state ) + + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu",Z80, XTAL_5MHz /2) + MCFG_CPU_PROGRAM_MAP(bcs3_mem) + MCFG_CPU_IO_MAP(bcs3_io) + + /* 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_STATIC(bcs3) + MCFG_GFXDECODE(bcs3) + MCFG_PALETTE_LENGTH(2) + MCFG_PALETTE_INIT(black_and_white) +MACHINE_CONFIG_END + +static MACHINE_CONFIG_DERIVED( bcs3a, bcs3 ) + /* basic machine hardware */ + MCFG_CPU_MODIFY( "maincpu" ) + MCFG_CPU_PROGRAM_MAP(bcs3a_mem) + + MCFG_SCREEN_MODIFY("screen") + MCFG_SCREEN_SIZE(29*8, 12*10) + MCFG_SCREEN_VISIBLE_AREA(0,29*8-1,0,12*10-1) + MCFG_SCREEN_UPDATE_STATIC(bcs3a) +MACHINE_CONFIG_END + +static MACHINE_CONFIG_DERIVED( bcs3b, bcs3 ) + /* basic machine hardware */ + MCFG_CPU_REPLACE( "maincpu", Z80, XTAL_7MHz / 2) + MCFG_CPU_PROGRAM_MAP(bcs3b_mem) + + MCFG_SCREEN_MODIFY("screen") + MCFG_SCREEN_SIZE(40*8, 24*10) + MCFG_SCREEN_VISIBLE_AREA(0,40*8-1,0,24*10-1) + MCFG_SCREEN_UPDATE_STATIC(bcs3b) +MACHINE_CONFIG_END + +static MACHINE_CONFIG_DERIVED( bcs3c, bcs3 ) + /* basic machine hardware */ + MCFG_CPU_MODIFY( "maincpu" ) + MCFG_CPU_PROGRAM_MAP(bcs3c_mem) + + MCFG_SCREEN_MODIFY("screen") + MCFG_SCREEN_SIZE(29*8, 12*10) + MCFG_SCREEN_VISIBLE_AREA(0,29*8-1,0,12*10-1) + MCFG_SCREEN_UPDATE_STATIC(bcs3c) +MACHINE_CONFIG_END + +/* ROM definition */ +ROM_START( bcs3 ) + ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) + ROM_LOAD( "se24.bin", 0x0000, 0x0800, CRC(268de5ee) SHA1(78784945956c1b0282a4e82ad55e7c3a77389e50)) + + ROM_REGION( 0x0400, "chargen", 0 ) + ROM_LOAD( "se24font.bin", 0x0000, 0x0400, CRC(eaed9d84) SHA1(7023a6187cd6bd0c6489d76ff662453f14e5b636)) +ROM_END + +ROM_START( bcs3a ) + ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) + ROM_LOAD( "se31_29.bin", 0x0000, 0x1000, CRC(e9b55544) SHA1(82bae68c4bcaecf66632f5b43913b50a1acba316)) + ROM_LOAD( "se31mceditor.bin", 0xf000, 0x0400, CRC(8eac92ec) SHA1(8950a3ef05d02abf34269bfce002c46d273ce113)) + + ROM_REGION( 0x0400, "chargen", 0 ) + ROM_LOAD( "se31font.bin", 0x0000, 0x0400, CRC(a20c93c9) SHA1(b2be1c0d98b7ac05713349b099b392975968be1d)) +ROM_END + +ROM_START( bcs3b ) + ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) + ROM_LOAD( "se31_40.bin", 0x0000, 0x1000, CRC(4e993152) SHA1(6bb01ff5779627fa2eb2df432fffcfccc1e33231)) + ROM_LOAD( "se31mceditor.bin", 0xf000, 0x0400, CRC(8eac92ec) SHA1(8950a3ef05d02abf34269bfce002c46d273ce113)) + + ROM_REGION( 0x0400, "chargen", 0 ) + ROM_LOAD( "se31font.bin", 0x0000, 0x0400, CRC(a20c93c9) SHA1(b2be1c0d98b7ac05713349b099b392975968be1d)) +ROM_END + +ROM_START( bcs3c ) + ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) + ROM_LOAD( "sp33_29.bin", 0x0000, 0x1000, CRC(1c851eb2) SHA1(4f8bb5274ea1861a35a840e8f3482bdc693047c4)) + + ROM_REGION( 0x0400, "chargen", 0 ) + ROM_LOAD( "sp33font.bin", 0x0000, 0x0400, CRC(b27f1c07) SHA1(61c80c585f198370ba5e856839c12b15acdc58ee)) +ROM_END + +/* Driver */ + +/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ +COMP( 1984, bcs3, 0, 0, bcs3, bcs3, driver_device, 0, "Eckhard Schiller", "BCS 3 rev 2.4", GAME_NOT_WORKING | GAME_NO_SOUND) +COMP( 1986, bcs3a, bcs3, 0, bcs3a, bcs3, driver_device, 0, "Eckhard Schiller", "BCS 3 rev 3.1 29-column", GAME_NOT_WORKING | GAME_NO_SOUND) +COMP( 1986, bcs3b, bcs3, 0, bcs3b, bcs3, driver_device, 0, "Eckhard Schiller", "BCS 3 rev 3.1 40-column", GAME_NOT_WORKING | GAME_NO_SOUND) +COMP( 198?, bcs3c, bcs3, 0, bcs3c, bcs3, driver_device, 0, "Eckhard Schiller", "BCS 3 rev 3.3", GAME_NOT_WORKING | GAME_NO_SOUND) |