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author Aaron Giles <aaron@aarongiles.com>2007-12-24 04:06:02 +0000
committer Aaron Giles <aaron@aarongiles.com>2007-12-24 04:06:02 +0000
commit707e623381b64e968fb5b754febd1a69fef138d6 (patch)
tree556ae8747b93d07b53792c945d96fa4bbaa9c5cf
parent76278ddf02e10778747346bdc13c7c4e6942b1ee (diff)
One more straggler for spacing cleanups.mame0122u1
-rw-r--r--src/emu/sound/ymf271.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/emu/sound/ymf271.c b/src/emu/sound/ymf271.c
index a5b0fb14c12..a69888da290 100644
--- a/src/emu/sound/ymf271.c
+++ b/src/emu/sound/ymf271.c
@@ -160,10 +160,10 @@ static const double DCTime[] =
/* Notes about the LFO Frequency Table below;
- There appears to be at least 2 errors in the table from the original manual.
+ There appears to be at least 2 errors in the table from the original manual.
- Both 201 & 202 where listed as 3.74490. 202 has be changed to 3.92000 which is "about right"
- 232 was listed as 13.35547. We use 14.35547 as it apears to be the correct value
+ Both 201 & 202 where listed as 3.74490. 202 has be changed to 3.92000 which is "about right"
+ 232 was listed as 13.35547. We use 14.35547 as it apears to be the correct value
*/
static const double LFO_frequency_table[256] =
='n147' href='#n147'>147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505
// 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 "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_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<z80_device> m_maincpu;
	required_device<z80ctc_device> m_ctc;
	required_region_ptr<u8> m_p_chargen;
	required_shared_ptr<u8> m_p_videoram;
	required_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)
		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_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 */
	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 */
	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")
	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));

	CASSETTE(config, m_cass);
MACHINE_CONFIG_END

MACHINE_CONFIG_START(bcs3_state::bcs3a)

	/* 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 */
	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")
	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));

	CASSETTE(config, m_cass);
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 )