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cxgz80: hooked up ch2001 i/o (nw)

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This commit is contained in:
hap 2017-02-21 23:33:12 +01:00
parent fad0f4eb67
commit 4c91f30075
1 changed files with 63 additions and 3 deletions
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66
src/mame/drivers/cxgz80.cpp
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@ -39,6 +39,7 @@ public:
: driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_dac(*this, "dac"),
m_speaker_off_timer(*this, "speaker_off"),
m_inp_matrix(*this, "IN.%u", 0),
m_display_wait(33),
m_display_maxy(1),
@ -47,8 +48,9 @@ public:
// devices/pointers
required_device<cpu_device> m_maincpu;
optional_device<dac_bit_interface> m_dac;
optional_ioport_array<8> m_inp_matrix;
required_device<dac_bit_interface> m_dac;
required_device<timer_device> m_speaker_off_timer;
optional_ioport_array<10> m_inp_matrix; // max 10
TIMER_DEVICE_CALLBACK_MEMBER(irq_on) { m_maincpu->set_input_line(INPUT_LINE_IRQ0, ASSERT_LINE); }
TIMER_DEVICE_CALLBACK_MEMBER(irq_off) { m_maincpu->set_input_line(INPUT_LINE_IRQ0, CLEAR_LINE); }
@ -76,7 +78,10 @@ public:
void display_matrix(int maxx, int maxy, u32 setx, u32 sety, bool update = true);
// Chess 2001
//x
TIMER_DEVICE_CALLBACK_MEMBER(speaker_off_callback);
DECLARE_WRITE8_MEMBER(ch2001_speaker_on_w);
DECLARE_WRITE8_MEMBER(ch2001_leds_w);
DECLARE_READ8_MEMBER(ch2001_input_r);
protected:
virtual void machine_start() override;
@ -236,6 +241,37 @@ u16 cxgz80_state::read_inputs(int columns)
// TTL
TIMER_DEVICE_CALLBACK_MEMBER(cxgz80_state::speaker_off_callback)
{
m_dac->write(0);
}
WRITE8_MEMBER(cxgz80_state::ch2001_speaker_on_w)
{
// 74ls109 clock pulse to speaker
m_dac->write(1);
m_speaker_off_timer->adjust(attotime::from_usec(200)); // not accurate
}
WRITE8_MEMBER(cxgz80_state::ch2001_leds_w)
{
// d0-d7: 74ls273 (WR to CLK)
// 74ls273 Q1-Q4: 74ls145 A-D
// 74ls145 0-9: input mux/led select
m_inp_mux = 1 << (data & 0xf) & 0x3ff;
// 74ls273 Q5-Q8: MC14028 A-D
// MC14028 Q0-Q7: led data, Q8,Q9: N/C
u8 led_data = 1 << (data >> 4 & 0xf) & 0xff;
display_matrix(8, 10, led_data, m_inp_mux);
}
READ8_MEMBER(cxgz80_state::ch2001_input_r)
{
// d0-d7: multiplexed inputs
return read_inputs(10);
}
/******************************************************************************
@ -247,6 +283,8 @@ u16 cxgz80_state::read_inputs(int columns)
static ADDRESS_MAP_START( ch2001_map, AS_PROGRAM, 8, cxgz80_state )
AM_RANGE(0x0000, 0x3fff) AM_ROM
AM_RANGE(0x4000, 0x47ff) AM_MIRROR(0x3800) AM_RAM
AM_RANGE(0x8000, 0x8000) AM_MIRROR(0x3fff) AM_READWRITE(ch2001_input_r, ch2001_leds_w)
AM_RANGE(0xc000, 0xc000) AM_MIRROR(0x3fff) AM_WRITE(ch2001_speaker_on_w)
ADDRESS_MAP_END
@ -340,6 +378,26 @@ INPUT_PORTS_END
static INPUT_PORTS_START( ch2001 )
PORT_INCLUDE( cb_magnets )
PORT_START("IN.8")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Black")
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("King")
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Queen")
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Rook")
PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Bishop")
PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Knight")
PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Pawn")
PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("White")
PORT_START("IN.9")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Set Up")
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("New Game")
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Take Back")
PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Forward")
PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Hint")
PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Move")
PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Level")
PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Sound")
INPUT_PORTS_END
@ -357,6 +415,8 @@ static MACHINE_CONFIG_START( ch2001, cxgz80_state )
MCFG_TIMER_START_DELAY(attotime::from_hz(484) - attotime::from_nsec(18300)) // active for 18.3us
MCFG_TIMER_DRIVER_ADD_PERIODIC("irq_off", cxgz80_state, irq_off, attotime::from_hz(484))
MCFG_TIMER_DRIVER_ADD("speaker_off", cxgz80_state, speaker_off_callback)
MCFG_TIMER_DRIVER_ADD_PERIODIC("display_decay", cxgz80_state, display_decay_tick, attotime::from_msec(1))
//MCFG_DEFAULT_LAYOUT(layout_cxg_chess2001)