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mame/src/mess/drivers/sc1.c
Miodrag Milanovic 0e19f641d3 Cleanups and version bump
2013-01-11 07:32:46 +00:00

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/***************************************************************************
Schachcomputer SC1
12/05/2009 Skeleton driver.
ToDo:
- speaker
- LEDs
- 7seg sometimes flashes
Port 80-83 could be a device
This happens at the start:
'maincpu' (04EF): unmapped i/o memory write to 0081 = 0F & FF
'maincpu' (04F3): unmapped i/o memory write to 0083 = CF & FF
'maincpu' (04F7): unmapped i/o memory write to 0083 = BB & FF
'maincpu' (04FB): unmapped i/o memory write to 0082 = 01 & FF
'maincpu' (0523): unmapped i/o memory write to 00FC = 02 & FF **
'maincpu' (0523): unmapped i/o memory write to 00FC = 04 & FF **
** These two happen for a while (making a tone from a speaker?)
Then:
'maincpu' (0523): unmapped i/o memory write to 00FC = 00 & FF
'maincpu' (0075): unmapped i/o memory write to 0080 = 02 & FF
'maincpu' (0523): unmapped i/o memory write to 00FC = 20 & FF
Then this happens continuously:
Port 80 out - 00, 02, FF
Port FC out - 00, 01, 02, 04, 08, 10, 20, 40, 80 (selecting rows?)
Port 80 in - upper byte = 20 thru 26
Port 82 in - upper byte = 0 thru 7
****************************************************************************/
#include "emu.h"
#include "cpu/z80/z80.h"
#include "sound/speaker.h"
#include "machine/z80pio.h"
#include "sc1.lh"
class sc1_state : public driver_device
{
public:
sc1_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_speaker(*this, SPEAKER_TAG)
{ }
required_device<cpu_device> m_maincpu;
required_device<speaker_sound_device> m_speaker;
DECLARE_WRITE8_MEMBER( matrix_w );
DECLARE_WRITE8_MEMBER( pio_port_a_w );
DECLARE_READ8_MEMBER( pio_port_b_r );
UINT8 m_matrix;
};
/***************************************************************************
Display
***************************************************************************/
WRITE8_MEMBER( sc1_state::pio_port_a_w )
{
UINT8 digit = BITSWAP8( data,3,4,6,0,1,2,7,5 );
if (m_matrix & 0x04)
output_set_digit_value(3, digit & 0x7f);
if (m_matrix & 0x08)
output_set_digit_value(2, digit & 0x7f);
if (m_matrix & 0x10)
output_set_digit_value(1, digit & 0x7f);
if (m_matrix & 0x20)
output_set_digit_value(0, digit & 0x7f);
}
/***************************************************************************
Keyboard
***************************************************************************/
WRITE8_MEMBER( sc1_state::matrix_w )
{
m_matrix = data;
}
READ8_MEMBER( sc1_state::pio_port_b_r )
{
UINT8 data = 0;
if (m_matrix & 0x01)
data |= ioport("LINE1")->read();
if (m_matrix & 0x02)
data |= ioport("LINE2")->read();
if (m_matrix & 0x04)
data |= ioport("LINE3")->read();
if (m_matrix & 0x08)
data |= ioport("LINE4")->read();
if (m_matrix & 0x10)
data |= ioport("LINE5")->read();
if (m_matrix & 0x20)
data |= ioport("LINE6")->read();
if (m_matrix & 0x40)
data |= ioport("LINE7")->read();
if (m_matrix & 0x80)
data |= ioport("LINE8")->read();
return data;
}
static ADDRESS_MAP_START(sc1_mem, AS_PROGRAM, 8, sc1_state)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE( 0x0000, 0x0fff ) AM_ROM
AM_RANGE( 0x4000, 0x43ff ) AM_RAM
ADDRESS_MAP_END
static ADDRESS_MAP_START(sc1_io, AS_IO, 8, sc1_state)
ADDRESS_MAP_UNMAP_HIGH
ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0x80, 0x83) AM_DEVREADWRITE("z80pio", z80pio_device, read_alt, write_alt)
AM_RANGE(0xfc, 0xfc) AM_WRITE(matrix_w)
ADDRESS_MAP_END
/* Input ports */
static INPUT_PORTS_START( sc1 )
PORT_START("LINE1")
PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_UNUSED) PORT_UNUSED
PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("D4") PORT_CODE(KEYCODE_4) PORT_CODE(KEYCODE_D)
PORT_START("LINE2")
PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("B2") PORT_CODE(KEYCODE_2) PORT_CODE(KEYCODE_B)
PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("F6") PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_F)
PORT_START("LINE3")
PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("C3") PORT_CODE(KEYCODE_3) PORT_CODE(KEYCODE_C)
PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("G7") PORT_CODE(KEYCODE_7) PORT_CODE(KEYCODE_G)
PORT_START("LINE4")
PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("A1") PORT_CODE(KEYCODE_1) PORT_CODE(KEYCODE_A)
PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("E5") PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_E)
PORT_START("LINE5")
PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("H8") PORT_CODE(KEYCODE_8) PORT_CODE(KEYCODE_H)
PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("CE") PORT_CODE(KEYCODE_DEL)
PORT_START("LINE6")
PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("K") PORT_CODE(KEYCODE_K)
PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("ENT") PORT_CODE(KEYCODE_ENTER)
PORT_START("LINE7")
PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("P") PORT_CODE(KEYCODE_O)
PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("W/S") PORT_CODE(KEYCODE_W)
PORT_START("LINE8")
PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("T") PORT_CODE(KEYCODE_T)
PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("C") PORT_CODE(KEYCODE_M)
INPUT_PORTS_END
static Z80PIO_INTERFACE( pio_intf )
{
DEVCB_NULL, /* callback when change interrupt status */
DEVCB_NULL, /* port A read callback */
DEVCB_DRIVER_MEMBER(sc1_state, pio_port_a_w), /* port A write callback */
DEVCB_NULL, /* portA ready active callback */
DEVCB_DRIVER_MEMBER(sc1_state, pio_port_b_r), /* port B read callback */
DEVCB_NULL, /* port B write callback */
DEVCB_NULL /* portB ready active callback */
};
static MACHINE_CONFIG_START( sc1, sc1_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu",Z80, XTAL_4MHz)
MCFG_CPU_PROGRAM_MAP(sc1_mem)
MCFG_CPU_IO_MAP(sc1_io)
/* video hardware */
MCFG_DEFAULT_LAYOUT(layout_sc1)
/* devices */
MCFG_Z80PIO_ADD("z80pio", XTAL_4MHz, pio_intf)
/* sound hardware */
MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_SOUND_ADD(SPEAKER_TAG, SPEAKER_SOUND, 0)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MACHINE_CONFIG_END
/* ROM definition */
ROM_START( sc1 )
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
ROM_LOAD( "sc1.rom", 0x0000, 0x1000, CRC(26965b23) SHA1(01568911446eda9f05ec136df53da147b7c6f2bf))
ROM_END
/* Driver */
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
COMP( 1989, sc1, 0, 0, sc1, sc1, driver_device, 0, "VEB Mikroelektronik Erfurt", "Schachcomputer SC1", GAME_NOT_WORKING | GAME_NO_SOUND )
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