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author Miodrag Milanovic <mmicko@gmail.com>2013-01-11 07:32:46 +0000
committer Miodrag Milanovic <mmicko@gmail.com>2013-01-11 07:32:46 +0000
commit0e19f641d3186cdbf51f8ca857e2b07ab95779c2 (patch)
tree234109de1123b13f217494af4b3f8efad346d5cc /src/mame/drivers/flipjack.c
parent111157ca09a9ff60fe4a9ba49173c315e94314fa (diff)
Cleanups and version bumpmame0148
Diffstat (limited to 'src/mame/drivers/flipjack.c')
-rw-r--r--src/mame/drivers/flipjack.c72
1 files changed, 36 insertions, 36 deletions
diff --git a/src/mame/drivers/flipjack.c b/src/mame/drivers/flipjack.c
index d44c9f4c3d1..aabf3c21098 100644
--- a/src/mame/drivers/flipjack.c
+++ b/src/mame/drivers/flipjack.c
@@ -80,8 +80,8 @@ ________________________|___________________________
#include "sound/ay8910.h"
#include "video/mc6845.h"
-#define MASTER_CLOCK XTAL_16MHz
-#define VIDEO_CLOCK XTAL_6MHz
+#define MASTER_CLOCK XTAL_16MHz
+#define VIDEO_CLOCK XTAL_6MHz
class flipjack_state : public driver_device
@@ -365,25 +365,25 @@ static INPUT_PORTS_START( flipjack )
PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED ) // output
PORT_START("DSW")
- PORT_DIPNAME( 0x01, 0x00, DEF_STR( Demo_Sounds ) ) PORT_DIPLOCATION("A0:1")
+ PORT_DIPNAME( 0x01, 0x00, DEF_STR( Demo_Sounds ) ) PORT_DIPLOCATION("A0:1")
PORT_DIPSETTING( 0x01, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
- PORT_DIPNAME( 0x02, 0x02, DEF_STR( Coinage ) ) PORT_DIPLOCATION("A0:2")
+ PORT_DIPNAME( 0x02, 0x02, DEF_STR( Coinage ) ) PORT_DIPLOCATION("A0:2")
PORT_DIPSETTING( 0x02, DEF_STR( 1C_1C ) )
PORT_DIPSETTING( 0x00, DEF_STR( 1C_2C ) )
- PORT_DIPNAME( 0x04, 0x04, "Drop Target" ) PORT_DIPLOCATION("A0:3")
+ PORT_DIPNAME( 0x04, 0x04, "Drop Target" ) PORT_DIPLOCATION("A0:3")
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
PORT_DIPSETTING( 0x04, DEF_STR( On ) )
- PORT_DIPNAME( 0x08, 0x00, DEF_STR( Cabinet ) ) PORT_DIPLOCATION("A0:4")
+ PORT_DIPNAME( 0x08, 0x00, DEF_STR( Cabinet ) ) PORT_DIPLOCATION("A0:4")
PORT_DIPSETTING( 0x00, DEF_STR( Upright ) )
PORT_DIPSETTING( 0x08, DEF_STR( Cocktail ) )
- PORT_DIPNAME( 0x70, 0x70, DEF_STR( Bonus_Life ) ) PORT_DIPLOCATION("A0:5,6,7")
+ PORT_DIPNAME( 0x70, 0x70, DEF_STR( Bonus_Life ) ) PORT_DIPLOCATION("A0:5,6,7")
PORT_DIPSETTING( 0x70, "150K & Every 70K" )
PORT_DIPSETTING( 0x60, "150K & Every 100K" )
PORT_DIPSETTING( 0x50, "200K & Every 70K" )
PORT_DIPSETTING( 0x40, "200K & Every 100K" )
PORT_DIPSETTING( 0x00, "None" )
- PORT_DIPNAME( 0x80, 0x80, DEF_STR( Lives ) ) PORT_DIPLOCATION("A0:8")
+ PORT_DIPNAME( 0x80, 0x80, DEF_STR( Lives ) ) PORT_DIPLOCATION("A0:8")
PORT_DIPSETTING( 0x80, "3" )
PORT_DIPSETTING( 0x00, "5" )
@@ -398,47 +398,47 @@ INPUT_PORTS_END
static I8255A_INTERFACE( ppi8255_intf )
{
- DEVCB_INPUT_PORT("P1"), /* Port A read */
- DEVCB_NULL, /* Port A write */
- DEVCB_INPUT_PORT("P2"), /* Port B read */
- DEVCB_NULL, /* Port B write */
- DEVCB_INPUT_PORT("P3"), /* Port C read */
- DEVCB_DRIVER_MEMBER(flipjack_state,flipjack_portc_w) /* Port C write */
+ DEVCB_INPUT_PORT("P1"), /* Port A read */
+ DEVCB_NULL, /* Port A write */
+ DEVCB_INPUT_PORT("P2"), /* Port B read */
+ DEVCB_NULL, /* Port B write */
+ DEVCB_INPUT_PORT("P3"), /* Port C read */
+ DEVCB_DRIVER_MEMBER(flipjack_state,flipjack_portc_w) /* Port C write */
};
static AY8910_INTERFACE( ay8910_config_1 )
{
- AY8910_LEGACY_OUTPUT, /* Flags */
- AY8910_DEFAULT_LOADS, /* Load on channel in ohms */
- DEVCB_DRIVER_MEMBER(flipjack_state,flipjack_soundlatch_r), /* Port A read */
- DEVCB_NULL, /* Port B read */
- DEVCB_NULL, /* Port A write */
- DEVCB_NULL /* Port B write */
+ AY8910_LEGACY_OUTPUT, /* Flags */
+ AY8910_DEFAULT_LOADS, /* Load on channel in ohms */
+ DEVCB_DRIVER_MEMBER(flipjack_state,flipjack_soundlatch_r), /* Port A read */
+ DEVCB_NULL, /* Port B read */
+ DEVCB_NULL, /* Port A write */
+ DEVCB_NULL /* Port B write */
};
static AY8910_INTERFACE( ay8910_config_2 )
{
- AY8910_LEGACY_OUTPUT, /* Flags */
- AY8910_DEFAULT_LOADS, /* Load on channel in ohms */
- DEVCB_NULL, /* Port A read */
- DEVCB_NULL, /* Port B read */
- DEVCB_NULL, /* Port A write */
- DEVCB_NULL /* Port B write */
+ AY8910_LEGACY_OUTPUT, /* Flags */
+ AY8910_DEFAULT_LOADS, /* Load on channel in ohms */
+ DEVCB_NULL, /* Port A read */
+ DEVCB_NULL, /* Port B read */
+ DEVCB_NULL, /* Port A write */
+ DEVCB_NULL /* Port B write */
};
static MC6845_INTERFACE( mc6845_intf )
{
- "screen", /* screen we are acting on */
- 8, /* number of pixels per video memory address */
- NULL, /* before pixel update callback */
- NULL, /* row update callback */
- NULL, /* after pixel update callback */
- DEVCB_NULL, /* callback for display state changes */
- DEVCB_NULL, /* callback for cursor state changes */
- DEVCB_NULL, /* HSYNC callback */
- DEVCB_NULL, /* VSYNC callback */
- NULL /* update address callback */
+ "screen", /* screen we are acting on */
+ 8, /* number of pixels per video memory address */
+ NULL, /* before pixel update callback */
+ NULL, /* row update callback */
+ NULL, /* after pixel update callback */
+ DEVCB_NULL, /* callback for display state changes */
+ DEVCB_NULL, /* callback for cursor state changes */
+ DEVCB_NULL, /* HSYNC callback */
+ DEVCB_NULL, /* VSYNC callback */
+ NULL /* update address callback */
};
'#n373'>373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915
// license:BSD-3-Clause
// copyright-holders:Curt Coder
/*

Sega SG-1000

PCB Layout
----------

171-5078 (C) SEGA 1983
171-5046 REV. A (C) SEGA 1983

|---------------------------|                              |----------------------------|
|   SW1     CN2             |   |------|---------------|   |    SW2     CN4             |
|                           |---|         CN3          |---|                            |
|  CN1                                                                              CN5 |
|                                                                                       |
|   10.738635MHz            |------------------------------|                7805        |
|   |---|                   |------------------------------|                            |
|   |   |                                 CN6                                           |
|   | 9 |                                                                               |
|   | 9 |                                                                       LS32    |
|   | 1 |       |---------|                                                             |
|   | 8 |       | TMM2009 |                                                     LS139   |
|   | A |       |---------|             |------------------|                            |
|   |   |                               |       Z80        |                            |
|   |---|                               |------------------|                            |
|                                                                                       |
|                                                                                       |
|       MB8118  MB8118  MB8118  MB8118              SN76489A            SW3             |
|           MB8118  MB8118  MB8118  MB8118                          LS257   LS257       |
|---------------------------------------------------------------------------------------|

Notes:
    All IC's shown.

    Z80     - NEC D780C-1 / Zilog Z8400A (REV.A) Z80A CPU @ 3.579545
    TMS9918A- Texas Instruments TMS9918ANL Video Display Processor @ 10.738635MHz
    MB8118  - Fujitsu MB8118-12 16K x 1 Dynamic RAM
    TMM2009 - Toshiba TMM2009P-A / TMM2009P-B (REV.A)
    SN76489A- Texas Instruments SN76489AN Digital Complex Sound Generator @ 3.579545
    CN1     - player 1 joystick connector
    CN2     - RF video connector
    CN3     - keyboard connector
    CN4     - power connector (+9VDC)
    CN5     - player 2 joystick connector
    CN6     - cartridge connector
    SW1     - TV channel select switch
    SW2     - power switch
    SW3     - hold switch

*/

/*

    TODO:

    - SC-3000 return instruction referenced by R when reading ports 60-7f,e0-ff
    - connect PSG /READY signal to Z80 WAIT
    - accurate video timing
    - SP-400 serial printer
    - SH-400 racing controller
    - SF-7000 serial comms

*/


#include "includes/sg1000.h"
#include "bus/rs232/rs232.h"


/***************************************************************************
    READ/WRITE HANDLERS
***************************************************************************/

// TODO: not sure if the OMV bios actually detects the presence of a cart,
// or if the cart data simply overwrites the internal bios...
// for the moment let assume the latter!
READ8_MEMBER( sg1000_state::omv_r )
{
	if (m_cart && m_cart->exists())
		return m_cart->read_cart(space, offset);
	else
		return m_rom->base()[offset];
}

WRITE8_MEMBER( sg1000_state::omv_w )
{
	if (m_cart && m_cart->exists())
		m_cart->write_cart(space, offset, data);
}

/*-------------------------------------------------
    joysel_r -
-------------------------------------------------*/

READ8_MEMBER( sg1000_state::joysel_r )
{
	return 0x80;
}

/*-------------------------------------------------
    ADDRESS_MAP( sg1000_map )
-------------------------------------------------*/

static ADDRESS_MAP_START( sg1000_map, AS_PROGRAM, 8, sg1000_state )
	AM_RANGE(0x0000, 0xbfff) AM_DEVREADWRITE(CARTSLOT_TAG, sega8_cart_slot_device, read_cart, write_cart)
	AM_RANGE(0xc000, 0xc3ff) AM_MIRROR(0x3c00) AM_RAM
ADDRESS_MAP_END

/*-------------------------------------------------
    ADDRESS_MAP( sg1000_io_map )
-------------------------------------------------*/

static ADDRESS_MAP_START( sg1000_io_map, AS_IO, 8, sg1000_state )
	ADDRESS_MAP_GLOBAL_MASK(0xff)
	AM_RANGE(0x40, 0x40) AM_MIRROR(0x3f) AM_DEVWRITE(SN76489AN_TAG, sn76489a_device, write)
	AM_RANGE(0x80, 0x80) AM_MIRROR(0x3e) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, vram_read, vram_write)
	AM_RANGE(0x81, 0x81) AM_MIRROR(0x3e) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, register_read, register_write)
	AM_RANGE(0xdc, 0xdc) AM_READ_PORT("PA7")
	AM_RANGE(0xdd, 0xdd) AM_READ_PORT("PB7")
	AM_RANGE(0xde, 0xde) AM_READ(joysel_r) AM_WRITENOP
	AM_RANGE(0xdf, 0xdf) AM_NOP
ADDRESS_MAP_END

/*-------------------------------------------------
    ADDRESS_MAP( omv_map )
-------------------------------------------------*/

static ADDRESS_MAP_START( omv_map, AS_PROGRAM, 8, sg1000_state )
	AM_RANGE(0x0000, 0xbfff) AM_READWRITE(omv_r, omv_w)
	AM_RANGE(0xc000, 0xc7ff) AM_MIRROR(0x3800) AM_RAM
ADDRESS_MAP_END

/*-------------------------------------------------
    ADDRESS_MAP( omv_io_map )
-------------------------------------------------*/

static ADDRESS_MAP_START( omv_io_map, AS_IO, 8, sg1000_state )
	ADDRESS_MAP_GLOBAL_MASK(0xff)
	AM_RANGE(0x40, 0x40) AM_MIRROR(0x3f) AM_DEVWRITE(SN76489AN_TAG, sn76489a_device, write)
	AM_RANGE(0x80, 0x80) AM_MIRROR(0x3e) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, vram_read, vram_write)
	AM_RANGE(0x81, 0x81) AM_MIRROR(0x3e) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, register_read, register_write)
	AM_RANGE(0xc0, 0xc0) AM_MIRROR(0x38) AM_READ_PORT("C0")
	AM_RANGE(0xc1, 0xc1) AM_MIRROR(0x38) AM_READ_PORT("C1")
	AM_RANGE(0xc2, 0xc2) AM_MIRROR(0x38) AM_READ_PORT("C2")
	AM_RANGE(0xc3, 0xc3) AM_MIRROR(0x38) AM_READ_PORT("C3")
	AM_RANGE(0xc4, 0xc4) AM_MIRROR(0x3a) AM_READ_PORT("C4")
	AM_RANGE(0xc5, 0xc5) AM_MIRROR(0x3a) AM_READ_PORT("C5")
ADDRESS_MAP_END

/*-------------------------------------------------
    ADDRESS_MAP( sc3000_map )
-------------------------------------------------*/

static ADDRESS_MAP_START( sc3000_map, AS_PROGRAM, 8, sg1000_state )
	AM_RANGE(0x0000, 0xbfff) AM_DEVREADWRITE(CARTSLOT_TAG, sega8_cart_slot_device, read_cart, write_cart)
	AM_RANGE(0xc000, 0xc7ff) AM_MIRROR(0x3800) AM_RAM
ADDRESS_MAP_END

/*-------------------------------------------------
    ADDRESS_MAP( sc3000_io_map )
-------------------------------------------------*/

static ADDRESS_MAP_START( sc3000_io_map, AS_IO, 8, sg1000_state )
	ADDRESS_MAP_GLOBAL_MASK(0xff)
	AM_RANGE(0x7f, 0x7f) AM_DEVWRITE(SN76489AN_TAG, sn76489a_device, write)
	AM_RANGE(0xbe, 0xbe) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, vram_read, vram_write)
	AM_RANGE(0xbf, 0xbf) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, register_read, register_write)
	AM_RANGE(0xdc, 0xdf) AM_DEVREADWRITE(UPD9255_TAG, i8255_device, read, write)
ADDRESS_MAP_END

/* This is how the I/O ports are really mapped, but MAME does not support overlapping ranges
static ADDRESS_MAP_START( sc3000_io_map, AS_IO, 8, sg1000_state )
    ADDRESS_MAP_GLOBAL_MASK(0xff)
    AM_RANGE(0x00, 0x00) AM_MIRROR(0xdf) AM_DEVREADWRITE(UPD9255_TAG, i8255_device, read, write)
    AM_RANGE(0x00, 0x00) AM_MIRROR(0x7f) AM_DEVWRITE(SN76489AN_TAG, sn76489a_device, write)
    AM_RANGE(0x00, 0x00) AM_MIRROR(0xae) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, vram_read, vram_write)
    AM_RANGE(0x01, 0x01) AM_MIRROR(0xae) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, register_read, register_write)
    AM_RANGE(0x60, 0x60) AM_MIRROR(0x9f) AM_READ(sc3000_r_r)
ADDRESS_MAP_END
*/

/*-------------------------------------------------
    ADDRESS_MAP( sf7000_map )
-------------------------------------------------*/

static ADDRESS_MAP_START( sf7000_map, AS_PROGRAM, 8, sf7000_state )
	AM_RANGE(0x0000, 0x3fff) AM_READ_BANK("bank1") AM_WRITE_BANK("bank2")
	AM_RANGE(0x4000, 0xffff) AM_RAM
ADDRESS_MAP_END

/*-------------------------------------------------
    ADDRESS_MAP( sf7000_io_map )
-------------------------------------------------*/

static ADDRESS_MAP_START( sf7000_io_map, AS_IO, 8, sf7000_state )
	ADDRESS_MAP_GLOBAL_MASK(0xff)
	AM_RANGE(0x7f, 0x7f) AM_DEVWRITE(SN76489AN_TAG, sn76489a_device, write)
	AM_RANGE(0xbe, 0xbe) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, vram_read, vram_write)
	AM_RANGE(0xbf, 0xbf) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, register_read, register_write)
	AM_RANGE(0xdc, 0xdf) AM_DEVREADWRITE(UPD9255_0_TAG, i8255_device, read, write)
	AM_RANGE(0xe0, 0xe1) AM_DEVICE(UPD765_TAG, upd765a_device, map)
	AM_RANGE(0xe4, 0xe7) AM_DEVREADWRITE(UPD9255_1_TAG, i8255_device, read, write)
	AM_RANGE(0xe8, 0xe8) AM_DEVREADWRITE(UPD8251_TAG, i8251_device, data_r, data_w)
	AM_RANGE(0xe9, 0xe9) AM_DEVREADWRITE(UPD8251_TAG, i8251_device, status_r, control_w)
ADDRESS_MAP_END

/***************************************************************************
    INPUT PORTS
***************************************************************************/

/*-------------------------------------------------
    INPUT_CHANGED_MEMBER( trigger_nmi )
-------------------------------------------------*/

INPUT_CHANGED_MEMBER( sg1000_state::trigger_nmi )
{
	m_maincpu->set_input_line(INPUT_LINE_NMI, newval ? CLEAR_LINE : ASSERT_LINE);
}

/*-------------------------------------------------
    INPUT_PORTS( sg1000 )
-------------------------------------------------*/

static INPUT_PORTS_START( sg1000 )
	PORT_START("PA7")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(2)
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2)

	PORT_START("PB7")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)
	PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("NMI")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_START ) PORT_NAME("PAUSE") PORT_CODE(KEYCODE_P) PORT_CHANGED_MEMBER(DEVICE_SELF, sg1000_state, trigger_nmi, 0)
INPUT_PORTS_END

/*-------------------------------------------------
    INPUT_PORTS( omv )
-------------------------------------------------*/

static INPUT_PORTS_START( omv )
	PORT_START("C0")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5')
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6')
	PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("C1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("9 #") PORT_CODE(KEYCODE_9) PORT_CHAR('9')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("0 *") PORT_CODE(KEYCODE_0) PORT_CHAR('0')
	PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("C2")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_A) PORT_CHAR('A')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_B) PORT_CHAR('B')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_C) PORT_CHAR('C')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_D) PORT_CHAR('D')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_E) PORT_CHAR('E')
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_F) PORT_CHAR('F')
	PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("C3")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_G) PORT_CHAR('G')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_H) PORT_CHAR('H')
	PORT_BIT( 0xfc, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("C4")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("S-1")
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_NAME("S-2")
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(2)
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2)

	PORT_START("C5")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)
	PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )
INPUT_PORTS_END

/*-------------------------------------------------
    INPUT_PORTS( sk1100 )
-------------------------------------------------*/

INPUT_PORTS_START( sk1100 )
	PORT_START("PA0")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_CHAR('Q') PORT_CHAR('q')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_CHAR('a')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') PORT_CHAR('z')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("ENG DIER'S") PORT_CODE(KEYCODE_RALT) PORT_CHAR(UCHAR_MAMEKEY(RALT))
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<')
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_K) PORT_CHAR('K') PORT_CHAR('k')
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I) PORT_CHAR('I') PORT_CHAR('i')

	PORT_START("PA1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('"')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_W) PORT_CHAR('W') PORT_CHAR('w')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S) PORT_CHAR('S') PORT_CHAR('s')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_CHAR('x')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("SPC") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>')
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L) PORT_CHAR('L') PORT_CHAR('l')
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_CHAR('O') PORT_CHAR('o')

	PORT_START("PA2")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_CHAR('e')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_CHAR('d')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_CHAR('c')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("HOME CLR") PORT_CODE(KEYCODE_HOME) PORT_CHAR(UCHAR_MAMEKEY(HOME))
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?')
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR('+')
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P) PORT_CHAR('P') PORT_CHAR('p')

	PORT_START("PA3")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R) PORT_CHAR('R') PORT_CHAR('r')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_CHAR('f')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V) PORT_CHAR('V') PORT_CHAR('v')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("INS DEL") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8)
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_SMALL_PI) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR(0x03c0)
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(':') PORT_CHAR('*')
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('@') PORT_CHAR('`')

	PORT_START("PA4")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_T) PORT_CHAR('T') PORT_CHAR('t')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G) PORT_CHAR('G') PORT_CHAR('g')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_CHAR('b')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_DOWN) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN))
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR(']') PORT_CHAR('}')
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR('[') PORT_CHAR('{')

	PORT_START("PA5")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') PORT_CHAR('y')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H) PORT_CHAR('H') PORT_CHAR('h')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_N) PORT_CHAR('N') PORT_CHAR('n')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_LEFT) PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT))
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CR") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("PA6")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U) PORT_CHAR('U') PORT_CHAR('u')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_CHAR('J') PORT_CHAR('j')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_M) PORT_CHAR('M') PORT_CHAR('m')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_RIGHT) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT))
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_UP) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP))
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("PA7")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(2)
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2)

	PORT_START("PB0")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(')
	PORT_BIT( 0x06, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("PB1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')')
	PORT_BIT( 0x06, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("PB2")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0')
	PORT_BIT( 0x06, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("PB3")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('=')
	PORT_BIT( 0x06, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("PB4")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH2) PORT_CHAR('^')
	PORT_BIT( 0x06, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("PB5")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("\xc2\xa5") PORT_CODE(KEYCODE_TILDE) PORT_CHAR(0x00a5)
	PORT_BIT( 0x06, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("FUNC") PORT_CODE(KEYCODE_TAB)

	PORT_START("PB6")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("BREAK") PORT_CODE(KEYCODE_ESC) PORT_CHAR(UCHAR_MAMEKEY(ESC))
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("GRAPH") PORT_CODE(KEYCODE_LALT) PORT_CHAR(UCHAR_MAMEKEY(LALT))
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_MAMEKEY(LCONTROL))
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)

	PORT_START("PB7")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)

	PORT_START("NMI")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("RESET") PORT_CODE(KEYCODE_F10) PORT_CHANGED_MEMBER(DEVICE_SELF, sg1000_state, trigger_nmi, 0)
INPUT_PORTS_END

/*-------------------------------------------------
    INPUT_PORTS( sc3000 )
-------------------------------------------------*/

static INPUT_PORTS_START( sc3000 )
	PORT_INCLUDE( sk1100 )
INPUT_PORTS_END

/*-------------------------------------------------
    INPUT_PORTS( sf7000 )
-------------------------------------------------*/

static INPUT_PORTS_START( sf7000 )
	PORT_INCLUDE( sk1100 )

	PORT_START("BAUD")
	PORT_CONFNAME( 0x07, 0x05, "Baud rate")
	PORT_CONFSETTING( 0x00, "9600 baud" )
	PORT_CONFSETTING( 0x01, "4800 baud" )
	PORT_CONFSETTING( 0x02, "2400 baud" )
	PORT_CONFSETTING( 0x03, "1200 baud" )
	PORT_CONFSETTING( 0x04, "600 baud" )
	PORT_CONFSETTING( 0x05, "300 baud" )
INPUT_PORTS_END

/***************************************************************************
    DEVICE CONFIGURATION
***************************************************************************/

/*-------------------------------------------------
    TMS9928a_interface tms9928a_interface
-------------------------------------------------*/

WRITE_LINE_MEMBER(sg1000_state::sg1000_vdp_interrupt)
{
	m_maincpu->set_input_line(INPUT_LINE_IRQ0, state);
}

/*-------------------------------------------------
    I8255 INTERFACE
-------------------------------------------------*/

READ8_MEMBER( sc3000_state::ppi_pa_r )
{
	/*
	    Signal  Description

	    PA0     Keyboard input
	    PA1     Keyboard input
	    PA2     Keyboard input
	    PA3     Keyboard input
	    PA4     Keyboard input
	    PA5     Keyboard input
	    PA6     Keyboard input
	    PA7     Keyboard input
	*/

	return m_key_row[m_keylatch]->read();
}

READ8_MEMBER( sc3000_state::ppi_pb_r )
{
	/*
	    Signal  Description

	    PB0     Keyboard input
	    PB1     Keyboard input
	    PB2     Keyboard input
	    PB3     Keyboard input
	    PB4     /CONT input from cartridge terminal B-11
	    PB5     FAULT input from printer
	    PB6     BUSY input from printer
	    PB7     Cassette tape input
	*/

	/* keyboard */
	UINT8 data = m_key_row[m_keylatch + 8]->read();

	/* cartridge contact */
	data |= 0x10;

	/* printer */
	data |= 0x60;

	/* tape input */
	if (m_cassette->input() > +0.0) data |= 0x80;

	return data;
}

WRITE8_MEMBER( sc3000_state::ppi_pc_w )
{
	/*
	    Signal  Description

	    PC0     Keyboard raster output
	    PC1     Keyboard raster output
	    PC2     Keyboard raster output
	    PC3     not connected
	    PC4     Cassette tape output
	    PC5     DATA to printer
	    PC6     /RESET to printer
	    PC7     /FEED to printer
	*/

	/* keyboard */
	m_keylatch = data & 0x07;

	/* cassette */
	m_cassette->output( BIT(data, 4) ? +1.0 : -1.0);

	/* TODO printer */
}

/*-------------------------------------------------
    I8255 INTERFACE
-------------------------------------------------*/

WRITE_LINE_MEMBER( sf7000_state::write_centronics_busy )
{
	m_centronics_busy = state;
}

READ8_MEMBER( sf7000_state::ppi_pa_r )
{
	/*
	    Signal  Description

	    PA0     INT from FDC
	    PA1     BUSY from Centronics printer
	    PA2     INDEX from FDD
	    PA3
	    PA4
	    PA5
	    PA6
	    PA7
	*/

	UINT8 data = 0;

	data |= m_fdc->get_irq() ? 0x01 : 0x00;
	data |= m_centronics_busy << 1;
	data |= m_floppy0->idx_r() << 2;

	return data;
}

WRITE8_MEMBER( sf7000_state::ppi_pc_w )
{
	/*
	    Signal  Description

	    PC0     /INUSE signal to FDD
	    PC1     /MOTOR ON signal to FDD
	    PC2     TC signal to FDC
	    PC3     RESET signal to FDC
	    PC4     not connected
	    PC5     not connected
	    PC6     /ROM SEL (switch between IPL ROM and RAM)
	    PC7     /STROBE to Centronics printer
	*/

	if (!BIT(data, 0))
		m_fdc->set_floppy(m_floppy0);
	else
		m_fdc->set_floppy(NULL);

	/* floppy motor */
	m_floppy0->mon_w(BIT(data, 1));

	/* FDC terminal count */
	m_fdc->tc_w(BIT(data, 2));

	/* FDC reset */
	if (BIT(data, 3))
	{
		m_fdc->reset();
	}

	/* ROM selection */
	membank("bank1")->set_entry(BIT(data, 6));

	/* printer strobe */
	m_centronics->write_strobe(BIT(data, 7));
}

/*-------------------------------------------------
    upd765_interface sf7000_upd765_interface
-------------------------------------------------*/

FLOPPY_FORMATS_MEMBER( sf7000_state::floppy_formats )
	FLOPPY_SF7000_FORMAT
FLOPPY_FORMATS_END

/*-------------------------------------------------
    floppy_interface sf7000_floppy_interface
-------------------------------------------------*/

static SLOT_INTERFACE_START( sf7000_floppies )
	SLOT_INTERFACE( "3ssdd", FLOPPY_3_SSDD )
SLOT_INTERFACE_END

/*-------------------------------------------------
    MACHINE_START( sg1000 )
-------------------------------------------------*/

void sg1000_state::machine_start()
{
	if (m_cart->get_type() == SEGA8_DAHJEE_TYPEA || m_cart->get_type() == SEGA8_DAHJEE_TYPEB)
	{
		m_maincpu->space(AS_PROGRAM).install_read_handler(0xc000, 0xffff, 0, 0, read8_delegate(FUNC(sega8_cart_slot_device::read_ram),(sega8_cart_slot_device*)m_cart));
		m_maincpu->space(AS_PROGRAM).install_write_handler(0xc000, 0xffff, 0, 0, write8_delegate(FUNC(sega8_cart_slot_device::write_ram),(sega8_cart_slot_device*)m_cart));
	}

	if (m_cart)
		m_cart->save_ram();
}

/*-------------------------------------------------
    MACHINE_START( sc3000 )
-------------------------------------------------*/

void sc3000_state::machine_start()
{
	/* toggle light gun crosshair */
	timer_set(attotime::zero, TIMER_LIGHTGUN_TICK);

	// find keyboard rows
	m_key_row[0] = m_pa0;
	m_key_row[1] = m_pa1;
	m_key_row[2] = m_pa2;
	m_key_row[3] = m_pa3;
	m_key_row[4] = m_pa4;
	m_key_row[5] = m_pa5;
	m_key_row[6] = m_pa6;
	m_key_row[7] = m_pa7;
	m_key_row[8] = m_pb0;
	m_key_row[9] = m_pb1;
	m_key_row[10] = m_pb2;
	m_key_row[11] = m_pb3;
	m_key_row[12] = m_pb4;
	m_key_row[13] = m_pb5;
	m_key_row[14] = m_pb6;
	m_key_row[15] = m_pb7;

	/* register for state saving */
	save_item(NAME(m_keylatch));

	if (m_cart && m_cart->exists() && (m_cart->get_type() == SEGA8_BASIC_L3 || m_cart->get_type() == SEGA8_MUSIC_EDITOR
								|| m_cart->get_type() == SEGA8_DAHJEE_TYPEA || m_cart->get_type() == SEGA8_DAHJEE_TYPEB))
	{
		m_maincpu->space(AS_PROGRAM).install_read_handler(0xc000, 0xffff, 0, 0, read8_delegate(FUNC(sega8_cart_slot_device::read_ram),(sega8_cart_slot_device*)m_cart));
		m_maincpu->space(AS_PROGRAM).install_write_handler(0xc000, 0xffff, 0, 0, write8_delegate(FUNC(sega8_cart_slot_device::write_ram),(sega8_cart_slot_device*)m_cart));
	}

	if (m_cart)
		m_cart->save_ram();
}


/*-------------------------------------------------
    MACHINE_START( sf7000 )
-------------------------------------------------*/

void sf7000_state::machine_start()
{
	sc3000_state::machine_start();

	save_item(NAME(m_centronics_busy));

	/* configure memory banking */
	membank("bank1")->configure_entry(0, m_rom->base());
	membank("bank1")->configure_entry(1, m_ram->pointer());
	membank("bank2")->configure_entry(0, m_ram->pointer());
}

void sf7000_state::machine_reset()
{
	membank("bank1")->set_entry(0);
	membank("bank2")->set_entry(0);
}

/***************************************************************************
    MACHINE DRIVERS
***************************************************************************/

/*-------------------------------------------------
    MACHINE_CONFIG_START( sg1000, sg1000_state )
-------------------------------------------------*/

static MACHINE_CONFIG_START( sg1000, sg1000_state )
	/* basic machine hardware */
	MCFG_CPU_ADD(Z80_TAG, Z80, XTAL_10_738635MHz/3)
	MCFG_CPU_PROGRAM_MAP(sg1000_map)
	MCFG_CPU_IO_MAP(sg1000_io_map)

	/* video hardware */
	MCFG_DEVICE_ADD( TMS9918A_TAG, TMS9918A, XTAL_10_738635MHz / 2 )
	MCFG_TMS9928A_VRAM_SIZE(0x4000)
	MCFG_TMS9928A_OUT_INT_LINE_CB(WRITELINE(sg1000_state, sg1000_vdp_interrupt))
	MCFG_TMS9928A_SCREEN_ADD_NTSC( SCREEN_TAG )
	MCFG_SCREEN_UPDATE_DEVICE( TMS9918A_TAG, tms9918a_device, screen_update )

	/* sound hardware */
	MCFG_SPEAKER_STANDARD_MONO("mono")

	MCFG_SOUND_ADD(SN76489AN_TAG, SN76489A, XTAL_10_738635MHz/3)
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)

	/* cartridge */
	MCFG_SG1000_CARTRIDGE_ADD(CARTSLOT_TAG, sg1000_cart, NULL)

	/* software lists */
	MCFG_SOFTWARE_LIST_ADD("cart_list","sg1000")

	/* internal ram */
	MCFG_RAM_ADD(RAM_TAG)
	MCFG_RAM_DEFAULT_SIZE("1K")
MACHINE_CONFIG_END

/*-------------------------------------------------
    MACHINE_CONFIG_DERIVED( omv, sg1000 )
-------------------------------------------------*/

static MACHINE_CONFIG_DERIVED( omv, sg1000 )
	MCFG_CPU_MODIFY(Z80_TAG)
	MCFG_CPU_PROGRAM_MAP(omv_map)
	MCFG_CPU_IO_MAP(omv_io_map)

	MCFG_DEVICE_REMOVE(CARTSLOT_TAG)
	MCFG_OMV_CARTRIDGE_ADD(CARTSLOT_TAG, sg1000_cart, NULL)

	MCFG_RAM_MODIFY(RAM_TAG)
	MCFG_RAM_DEFAULT_SIZE("2K")
MACHINE_CONFIG_END

/*-------------------------------------------------
    MACHINE_CONFIG_START( sc3000, sc3000_state )
-------------------------------------------------*/

static MACHINE_CONFIG_START( sc3000, sc3000_state )
	/* basic machine hardware */
	MCFG_CPU_ADD(Z80_TAG, Z80, XTAL_10_738635MHz/3) // LH0080A
	MCFG_CPU_PROGRAM_MAP(sc3000_map)
	MCFG_CPU_IO_MAP(sc3000_io_map)

	/* video hardware */
	MCFG_DEVICE_ADD( TMS9918A_TAG, TMS9918A, XTAL_10_738635MHz / 2 )
	MCFG_TMS9928A_VRAM_SIZE(0x4000)
	MCFG_TMS9928A_OUT_INT_LINE_CB(WRITELINE(sg1000_state, sg1000_vdp_interrupt))
	MCFG_TMS9928A_SCREEN_ADD_NTSC( SCREEN_TAG )
	MCFG_SCREEN_UPDATE_DEVICE( TMS9918A_TAG, tms9918a_device, screen_update )

	/* sound hardware */
	MCFG_SPEAKER_STANDARD_MONO("mono")

	MCFG_SOUND_ADD(SN76489AN_TAG, SN76489A, XTAL_10_738635MHz/3)
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)

	/* devices */
	MCFG_DEVICE_ADD(UPD9255_TAG, I8255, 0)
	MCFG_I8255_IN_PORTA_CB(READ8(sc3000_state, ppi_pa_r))
	MCFG_I8255_IN_PORTB_CB(READ8(sc3000_state, ppi_pb_r))
	MCFG_I8255_OUT_PORTC_CB(WRITE8(sc3000_state, ppi_pc_w))

//  MCFG_PRINTER_ADD("sp400") /* serial printer */

	MCFG_CASSETTE_ADD("cassette")
	MCFG_CASSETTE_FORMATS(sc3000_cassette_formats)
	MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_STOPPED | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_ENABLED)
	MCFG_CASSETTE_INTERFACE("sc3000_cass")

	/* cartridge */
	MCFG_SC3000_CARTRIDGE_ADD(CARTSLOT_TAG, sg1000_cart, NULL)

	/* software lists */
	MCFG_SOFTWARE_LIST_ADD("cart_list","sg1000")
	MCFG_SOFTWARE_LIST_ADD("sc3k_cart_list","sc3000_cart")
	MCFG_SOFTWARE_LIST_ADD("cass_list","sc3000_cass")

	/* internal ram */
	MCFG_RAM_ADD(RAM_TAG)
	MCFG_RAM_DEFAULT_SIZE("2K")
MACHINE_CONFIG_END

/*-------------------------------------------------
    MACHINE_CONFIG_START( sf7000, sf7000_state )
-------------------------------------------------*/

static MACHINE_CONFIG_START( sf7000, sf7000_state )
	/* basic machine hardware */
	MCFG_CPU_ADD(Z80_TAG, Z80, XTAL_10_738635MHz/3)
	MCFG_CPU_PROGRAM_MAP(sf7000_map)
	MCFG_CPU_IO_MAP(sf7000_io_map)

	/* video hardware */
	MCFG_DEVICE_ADD( TMS9918A_TAG, TMS9918A, XTAL_10_738635MHz / 2 )
	MCFG_TMS9928A_VRAM_SIZE(0x4000)
	MCFG_TMS9928A_OUT_INT_LINE_CB(WRITELINE(sg1000_state, sg1000_vdp_interrupt))
	MCFG_TMS9928A_SCREEN_ADD_NTSC( SCREEN_TAG )
	MCFG_SCREEN_UPDATE_DEVICE( TMS9918A_TAG, tms9918a_device, screen_update )

	/* sound hardware */
	MCFG_SPEAKER_STANDARD_MONO("mono")

	MCFG_SOUND_ADD(SN76489AN_TAG, SN76489A, XTAL_10_738635MHz/3)
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)

	/* devices */
	MCFG_DEVICE_ADD(UPD9255_0_TAG, I8255, 0)
	MCFG_I8255_IN_PORTA_CB(READ8(sc3000_state, ppi_pa_r))
	MCFG_I8255_IN_PORTB_CB(READ8(sc3000_state, ppi_pb_r))
	MCFG_I8255_OUT_PORTC_CB(WRITE8(sc3000_state, ppi_pc_w))

	MCFG_DEVICE_ADD(UPD9255_1_TAG, I8255, 0)
	MCFG_I8255_IN_PORTA_CB(READ8(sf7000_state, ppi_pa_r))
	MCFG_I8255_OUT_PORTB_CB(DEVWRITE8("cent_data_out", output_latch_device, write))
	MCFG_I8255_OUT_PORTC_CB(WRITE8(sf7000_state, ppi_pc_w))

	MCFG_DEVICE_ADD(UPD8251_TAG, I8251, 0)
	MCFG_I8251_TXD_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_txd))
	MCFG_I8251_DTR_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_dtr))
	MCFG_I8251_RTS_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_rts))

	MCFG_RS232_PORT_ADD(RS232_TAG, default_rs232_devices, NULL)
	MCFG_RS232_RXD_HANDLER(DEVWRITELINE(UPD8251_TAG, i8251_device, write_rxd))
	MCFG_RS232_DSR_HANDLER(DEVWRITELINE(UPD8251_TAG, i8251_device, write_dsr))

	MCFG_UPD765A_ADD(UPD765_TAG, false, false)
	MCFG_FLOPPY_DRIVE_ADD(UPD765_TAG ":0", sf7000_floppies, "3ssdd", sf7000_state::floppy_formats)

	MCFG_CENTRONICS_ADD(CENTRONICS_TAG, centronics_devices, "printer")

	MCFG_CENTRONICS_OUTPUT_LATCH_ADD("cent_data_out", "centronics")

	MCFG_CASSETTE_ADD("cassette")
	MCFG_CASSETTE_FORMATS(sc3000_cassette_formats)
	MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_STOPPED | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_ENABLED)
	MCFG_CASSETTE_INTERFACE("sc3000_cass")

	/* software lists */
	MCFG_SOFTWARE_LIST_ADD("flop_list","sf7000")

	/* internal ram */
	MCFG_RAM_ADD(RAM_TAG)
	MCFG_RAM_DEFAULT_SIZE("64K")
MACHINE_CONFIG_END

/***************************************************************************
    ROMS
***************************************************************************/

ROM_START( sg1000 )
	ROM_REGION( 0x10000, Z80_TAG, ROMREGION_ERASE00 )
ROM_END

#define rom_sg1000m2 rom_sg1000

#define rom_sc3000 rom_sg1000

#define rom_sc3000h rom_sg1000

ROM_START( sf7000 )
	ROM_REGION( 0x10000, Z80_TAG, ROMREGION_ERASE00 )
	ROM_LOAD( "ipl.rom", 0x0000, 0x2000, CRC(d76810b8) SHA1(77339a6db2593aadc638bed77b8e9bed5d9d87e3) )
ROM_END

ROM_START( omv1000 )
	ROM_REGION( 0x10000, Z80_TAG, ROMREGION_ERASE00 )
	ROM_LOAD( "omvbios.bin", 0x0000, 0x4000, BAD_DUMP CRC(c5a67b95) SHA1(6d7c64dd60dee4a33061d3d3a7c2ed190d895cdb) )    // The BIOS comes from a Multivision FG-2000. It is still unknown if the FG-1000 BIOS differs
ROM_END

ROM_START( omv2000 )
	ROM_REGION( 0x10000, Z80_TAG, ROMREGION_ERASE00 )
	ROM_LOAD( "omvbios.bin", 0x0000, 0x4000, CRC(c5a67b95) SHA1(6d7c64dd60dee4a33061d3d3a7c2ed190d895cdb) )
ROM_END

/***************************************************************************
    SYSTEM DRIVERS
***************************************************************************/

/*    YEAR  NAME        PARENT      COMPAT      MACHINE     INPUT       INIT    COMPANY             FULLNAME                                    FLAGS */
CONS( 1983, sg1000,     0,          0,          sg1000,     sg1000, driver_device,     0,      "Sega",             "SG-1000",                                  MACHINE_SUPPORTS_SAVE )
CONS( 1984, sg1000m2,   sg1000,     0,          sc3000,     sc3000, driver_device,     0,      "Sega",             "SG-1000 II",                               MACHINE_SUPPORTS_SAVE )
COMP( 1983, sc3000,     0,          sg1000,     sc3000,     sc3000, driver_device,     0,      "Sega",             "SC-3000",                                  MACHINE_SUPPORTS_SAVE )
COMP( 1983, sc3000h,    sc3000,     0,          sc3000,     sc3000, driver_device,     0,      "Sega",             "SC-3000H",                                 MACHINE_SUPPORTS_SAVE )
COMP( 1983, sf7000,     sc3000,     0,          sf7000,     sf7000, driver_device,     0,      "Sega",             "SC-3000/Super Control Station SF-7000",    MACHINE_SUPPORTS_SAVE )
CONS( 1984, omv1000,    sg1000,     0,          omv,        omv,    driver_device,     0,      "Tsukuda Original", "Othello Multivision FG-1000",              MACHINE_SUPPORTS_SAVE )
CONS( 1984, omv2000,    sg1000,     0,          omv,        omv,    driver_device,     0,      "Tsukuda Original", "Othello Multivision FG-2000",              MACHINE_SUPPORTS_SAVE )