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/******************************************************************************
PeT mess@utanet.at September 2000
chess champion mk II
MOS MPS 6504 2179
MOS MPS 6530 024 1879
layout of 6530 dumped with my adapter
0x1300-0x133f io
0x1380-0x13bf ram
0x1400-0x17ff rom
2x2111 ram (256x4?)
MOS MPS 6332 005 2179
74145 bcd to decimal encoder (10 low active select lines)
(7400)
4x 7 segment led display (each with dot)
4 single leds
21 keys
83, 84 contains display variables
port a
0..7 led output
0..6 keyboard input
port b
0..5 outputs
0 speaker out
6 as chipselect used!?
7 interrupt out?
c4, c5, keyboard polling
c0, c1, c2, c3 led output
Usage:
under the black keys are operations to be added as first sign
black and white box are only changing the player
for the computer to start as white
switch to black (h enter)
swap players (g enter)
******************************************************************************/
#include "emu.h"
#include "machine/mos6530.h"
#include "cpu/m6502/m6502.h"
#include "sound/speaker.h"
#include "mk2.lh"
class mk2_state : public driver_device
{
public:
mk2_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),
m_miot(*this, "miot")
{ }
required_device<cpu_device> m_maincpu;
required_device<device_t> m_speaker;
required_device<device_t> m_miot;
DECLARE_READ8_MEMBER(mk2_read_a);
DECLARE_WRITE8_MEMBER(mk2_write_a);
DECLARE_READ8_MEMBER(mk2_read_b);
DECLARE_WRITE8_MEMBER(mk2_write_b);
UINT8 m_led[5];
virtual void machine_start();
TIMER_DEVICE_CALLBACK_MEMBER(update_leds);
};
// only lower 12 address bits on bus!
static ADDRESS_MAP_START(mk2_mem , AS_PROGRAM, 8, mk2_state)
ADDRESS_MAP_GLOBAL_MASK(0x1FFF) // m6504
AM_RANGE( 0x0000, 0x01ff) AM_RAM // 2 2111, should be mirrored
AM_RANGE( 0x0b00, 0x0b0f) AM_DEVREADWRITE_LEGACY("miot", mos6530_r, mos6530_w)
AM_RANGE( 0x0b80, 0x0bbf) AM_RAM // rriot ram
AM_RANGE( 0x0c00, 0x0fff) AM_ROM // rriot rom
AM_RANGE( 0x1000, 0x1fff) AM_ROM
ADDRESS_MAP_END
static INPUT_PORTS_START( mk2 )
PORT_START("EXTRA")
PORT_BIT(0x001, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("NEW GAME") PORT_CODE(KEYCODE_F3) // seems to be direct wired to reset
PORT_BIT(0x002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("CLEAR") PORT_CODE(KEYCODE_F1)
PORT_BIT(0x004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("ENTER") PORT_CODE(KEYCODE_ENTER)
PORT_START("BLACK")
PORT_BIT(0x001, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Black A Black") PORT_CODE(KEYCODE_A)
PORT_BIT(0x002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Black B Field") PORT_CODE(KEYCODE_B)
PORT_BIT(0x004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Black C Time?") PORT_CODE(KEYCODE_C)
PORT_BIT(0x008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Black D Time?") PORT_CODE(KEYCODE_D)
PORT_BIT(0x010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Black E Time off?") PORT_CODE(KEYCODE_E)
PORT_BIT(0x020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Black F LEVEL") PORT_CODE(KEYCODE_F)
PORT_BIT(0x040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Black G Swap") PORT_CODE(KEYCODE_G)
PORT_BIT(0x080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Black H White") PORT_CODE(KEYCODE_H)
PORT_START("WHITE")
PORT_BIT(0x001, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("White 1") PORT_CODE(KEYCODE_1)
PORT_BIT(0x002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("White 2") PORT_CODE(KEYCODE_2)
PORT_BIT(0x004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("White 3") PORT_CODE(KEYCODE_3)
PORT_BIT(0x008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("White 4") PORT_CODE(KEYCODE_4)
PORT_BIT(0x010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("White 5") PORT_CODE(KEYCODE_5)
PORT_BIT(0x020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("White 6") PORT_CODE(KEYCODE_6)
PORT_BIT(0x040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("White 7") PORT_CODE(KEYCODE_7)
PORT_BIT(0x080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("White 8") PORT_CODE(KEYCODE_8)
INPUT_PORTS_END
TIMER_DEVICE_CALLBACK_MEMBER(mk2_state::update_leds)
{
int i;
for (i=0; i<4; i++)
output_set_digit_value(i, m_led[i]);
output_set_led_value(0, BIT(m_led[4], 3));
output_set_led_value(1, BIT(m_led[4], 5));
output_set_led_value(2, BIT(m_led[4], 4));
output_set_led_value(3, BIT(m_led[4], 4) ? 0 : 1);
m_led[0]= m_led[1]= m_led[2]= m_led[3]= m_led[4]= 0;
}
void mk2_state::machine_start()
{
}
READ8_MEMBER( mk2_state::mk2_read_a )
{
int data=0xff;
int help=ioport("BLACK")->read() | ioport("WHITE")->read(); // looks like white and black keys are the same!
switch (mos6530_portb_out_get(m_miot)&0x7)
{
case 4:
if (BIT(help, 5)) data&=~0x1; //F
if (BIT(help, 4)) data&=~0x2; //E
if (BIT(help, 3)) data&=~0x4; //D
if (BIT(help, 2)) data&=~0x8; // C
if (BIT(help, 1)) data&=~0x10; // B
if (BIT(help, 0)) data&=~0x20; // A
break;
case 5:
if (BIT(ioport("EXTRA")->read(), 2)) data&=~0x8; // Enter
if (BIT(ioport("EXTRA")->read(), 1)) data&=~0x10; // Clear
if (BIT(help, 7)) data&=~0x20; // H
if (BIT(help, 6)) data&=~0x40; // G
break;
}
return data;
}
WRITE8_MEMBER( mk2_state::mk2_write_a )
{
UINT8 temp = mos6530_portb_out_get(m_miot);
m_led[temp & 3] |= data;
}
READ8_MEMBER( mk2_state::mk2_read_b )
{
return 0xff&~0x40; // chip select mapped to pb6
}
WRITE8_MEMBER( mk2_state::mk2_write_b )
{
if ((data&0x06) == 0x06)
speaker_level_w(m_speaker, BIT(data, 0));
m_led[4]|=data;
machine().device("maincpu")->execute().set_input_line(M6502_IRQ_LINE, (data & 0x80) ? CLEAR_LINE : ASSERT_LINE );
}
static MOS6530_INTERFACE( mk2_mos6530_interface )
{
DEVCB_DRIVER_MEMBER(mk2_state, mk2_read_a),
DEVCB_DRIVER_MEMBER(mk2_state, mk2_write_a),
DEVCB_DRIVER_MEMBER(mk2_state, mk2_read_b),
DEVCB_DRIVER_MEMBER(mk2_state, mk2_write_b)
};
static MACHINE_CONFIG_START( mk2, mk2_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", M6502, 1000000) /* 6504 */
MCFG_CPU_PROGRAM_MAP(mk2_mem)
MCFG_QUANTUM_TIME(attotime::from_hz(60))
/* video hardware */
MCFG_DEFAULT_LAYOUT(layout_mk2)
MCFG_MOS6530_ADD( "miot", 1000000, mk2_mos6530_interface )
/* sound hardware */
MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_SOUND_ADD(SPEAKER_TAG, SPEAKER_SOUND, 0)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MCFG_TIMER_DRIVER_ADD_PERIODIC("led_timer", mk2_state, update_leds, attotime::from_hz(60))
MACHINE_CONFIG_END
ROM_START(ccmk2)
ROM_REGION(0x10000,"maincpu",0)
ROM_LOAD("024_1879", 0x0c00, 0x0400, CRC(4f28c443) SHA1(e33f8b7f38e54d7a6e0f0763f2328cc12cb0eade))
ROM_LOAD("005_2179", 0x1000, 0x1000, CRC(6f10991b) SHA1(90cdc5a15d9ad813ad20410f21081c6e3e481812)) // chess mate 7.5
ROM_END
/***************************************************************************
Game driver(s)
***************************************************************************/
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME */
CONS( 1979, ccmk2, 0, 0, mk2, mk2, driver_device, 0, "Quelle International", "Chess Champion MK II", 0)
// second design sold (same computer/program?)
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