自学教程：C++ DEVCB_CPU_INPUT_LINE函数代码示例

{	int state = !m_dma_eop || m_uart_dr || m_uart_tbre || m_fdc_dd0 || m_fdc_dd1 || m_fdc->get_irq() || m_fpu_irq || m_bus_irq2;	pic8259_ir2_w(m_pic, state);}static IRQ_CALLBACK( wangpc_irq_callback ){	wangpc_state *state = device->machine().driver_data<wangpc_state>();	return pic8259_acknowledge(state->m_pic);}static const struct pic8259_interface pic_intf ={	DEVCB_CPU_INPUT_LINE(I8086_TAG, INPUT_LINE_IRQ0),	DEVCB_LINE_VCC,	DEVCB_NULL};//-------------------------------------------------//  I8255A_INTERFACE( ppi_intf )//-------------------------------------------------READ8_MEMBER( wangpc_state::ppi_pa_r ){	/*        bit     description

	PORT_BIT( 0x040, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("B 6") PORT_CODE(KEYCODE_6_PAD)	PORT_BIT( 0x080, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("B 7") PORT_CODE(KEYCODE_1_PAD)	PORT_BIT( 0x100, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("B 8") PORT_CODE(KEYCODE_2_PAD)	PORT_BIT( 0x200, IP_ACTIVE_HIGH, IPT_KEYPAD ) PORT_NAME("B 9") PORT_CODE(KEYCODE_3_PAD)	PORT_START("CLEAR")	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("Clear") PORT_CODE(KEYCODE_F3) PORT_CHAR(UCHAR_MAMEKEY(F3)) PORT_CHANGED_MEMBER(DEVICE_SELF, studio2_state, reset_w, 0)INPUT_PORTS_END/* Video */static CDP1861_INTERFACE( studio2_cdp1861_intf ){	CDP1802_TAG,	SCREEN_TAG,	DEVCB_CPU_INPUT_LINE(CDP1802_TAG, COSMAC_INPUT_LINE_INT),	DEVCB_CPU_INPUT_LINE(CDP1802_TAG, COSMAC_INPUT_LINE_DMAOUT),	DEVCB_CPU_INPUT_LINE(CDP1802_TAG, COSMAC_INPUT_LINE_EF1)};static const rgb_t VISICOM_PALETTE[] ={    MAKE_RGB(0x00, 0x80, 0x00),    MAKE_RGB(0x00, 0x00, 0xff),    MAKE_RGB(0x00, 0xff, 0x00),    MAKE_RGB(0xff, 0x00, 0x00)};READ_LINE_MEMBER( mpt02_state::rdata_r ){	return BIT(m_color, 0);

	CDP1869_PAL,	cidelsa_pcb_r,	cidelsa_charram_r,	cidelsa_charram_w,	DEVCB_DRIVER_LINE_MEMBER(cidelsa_state, prd_w)};static CDP1869_INTERFACE( draco_vis_intf ){	SCREEN_TAG,	0,	CDP1869_PAL,	draco_pcb_r,	draco_charram_r,	draco_charram_w,	DEVCB_CPU_INPUT_LINE(CDP1802_TAG, COSMAC_INPUT_LINE_EF1)};/* Video Start */void cidelsa_state::video_start(){	// allocate memory	m_pcbram = auto_alloc_array(machine(), UINT8, CIDELSA_CHARRAM_SIZE);	m_charram = auto_alloc_array(machine(), UINT8, CIDELSA_CHARRAM_SIZE);	// register for state saving	save_item(NAME(m_cdp1869_pcb));	save_pointer(NAME(m_pcbram), CIDELSA_CHARRAM_SIZE);	save_pointer(NAME(m_charram), CIDELSA_CHARRAM_SIZE);}

	PORT_CONFNAME( 0x03, 0x03, "IDA character set")	PORT_CONFSETTING(0x00, "Greek")	PORT_CONFSETTING(0x01, "Norwegian (Codepage 860)")	PORT_CONFSETTING(0x02, "Portugese (Codepage 865)")	PORT_CONFSETTING(0x03, "Default (Codepage 437)")	PORT_CONFNAME( 0x1C, 0x00, "CGA monitor type")	PORT_CONFSETTING(0x00, "Colour RGB")	PORT_CONFSETTING(0x04, "Mono RGB")	PORT_CONFSETTING(0x0C, "Television")	PORT_BIT ( 0xE0, 0x40, IPT_UNUSED ) /* Chipset is always PPC512 */INPUT_PORTS_ENDstatic const pc_lpt_interface pc_lpt_config ={	DEVCB_CPU_INPUT_LINE("maincpu", 0)};static const floppy_format_type ibmpc_floppy_formats[] = {	FLOPPY_PC_FORMAT,	FLOPPY_MFI_FORMAT,	NULL};static SLOT_INTERFACE_START( ibmpc_floppies )	SLOT_INTERFACE( "525dd", FLOPPY_525_DD )SLOT_INTERFACE_ENDSLOT_INTERFACE_START(amstr_com)	SLOT_INTERFACE("microsoft_mouse", MSFT_SERIAL_MOUSE)	SLOT_INTERFACE("mouse_systems_mouse", MSYSTEM_SERIAL_MOUSE)

        CA1: N/C        CA2: input: "TDISP" (one of the higher bits in the video line counter, a mirror of the D5 bit from beezer_line_r), done in /video/beezer.c        CB1: ASH1 to via 1        CB2: ASH2 to via 1    /IRQ: to main m6809 cpu    /RES: from main reset generator/watchdog/button    TODO: find a better way to attach ca2 read to beezer_line_r    */const via6522_interface b_via_0_interface ={	/*inputs : A/B         */ DEVCB_DRIVER_MEMBER(beezer_state,b_via_0_pa_r), DEVCB_DRIVER_MEMBER(beezer_state,b_via_0_pb_r),	/*inputs : CA/B1,CA/B2 */ DEVCB_NULL, DEVCB_DEVICE_LINE_MEMBER("via6522_1", via6522_device, read_ca2), DEVCB_DRIVER_LINE_MEMBER(beezer_state, b_via_0_ca2_r), DEVCB_DEVICE_LINE_MEMBER("via6522_1", via6522_device, read_ca1),	/*outputs: A/B         */ DEVCB_DRIVER_MEMBER(beezer_state,b_via_0_pa_w), DEVCB_DRIVER_MEMBER(beezer_state,b_via_0_pb_w),	/*outputs: CA/B1,CA/B2 */ DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_DEVICE_LINE_MEMBER("via6522_1", via6522_device, write_ca1),	/*irq                  */ DEVCB_CPU_INPUT_LINE("maincpu", M6809_IRQ_LINE)};/* VIA 1 (U18 @3C on schematics)    port A:        bits 7-0: input/output: pbus    port B:        bit 7: output: TIMER1 OUT (used to gate NOISE (see below) to clock channel 1 of 6840, plus acts as channel 0 by itself)        bit 6: input: NOISE (from mm5837 14-bit LFSR, which also connects to clock above)        bit 5: output?: N/C        bit 4: output?: FMSEL1 (does not appear elsewhere on schematics! what does this do? needs tracing) - always 0?        bit 3: output?: FMSEL0 (does not appear elsewhere on schematics! what does this do? needs tracing) - always 0?        bit 2: output?: AM (does not appear elsewhere on schematics! what does this do? needs tracing) - always 0?        bit 1: output: FM or AM (appears to control some sort of suppression or filtering change of the post-DAC amplifier when enabled, only during the TIMER1 OUT time-slot of the multiplexer, see page 1B 3-3 of schematics) - always 0? why is there a special circuit for it?        bit 0: output?: DMOD DISABLE (does not appear elsewhere on schematics! what does this do? needs tracing) - on startup is 0, turns to 1 and stays that way?    port C:

	return data;}WRITE_LINE_MEMBER( grip_device::speaker_w ){	int level = state && ((m_vol1 << 1) | m_vol0);	m_speaker->level_w(level);}static Z80STI_INTERFACE( sti_intf ){	0,                                                      // serial receive clock	0,                                                      // serial transmit clock	DEVCB_CPU_INPUT_LINE(Z80_TAG, INPUT_LINE_IRQ0),         // interrupt	DEVCB_DEVICE_MEMBER(DEVICE_SELF_OWNER, grip_device, sti_gpio_r),    // GPIO read	DEVCB_NULL,                                             // GPIO write	DEVCB_NULL,                                             // serial input	DEVCB_NULL,                                             // serial output	DEVCB_NULL,                                             // timer A output	DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, grip_device, speaker_w),    // timer B output	DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF, z80sti_device, tc_w),                                // timer C output	DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF, z80sti_device, rc_w)                                 // timer D output};//-------------------------------------------------//  z80_daisy_config grip_daisy_chain//-------------------------------------------------

const via6522_interface mirage_via ={	DEVCB_HANDLER(mirage_via_read_porta),	DEVCB_HANDLER(mirage_via_read_portb),	DEVCB_HANDLER(mirage_via_read_ca1),	DEVCB_HANDLER(mirage_via_read_cb1),	DEVCB_HANDLER(mirage_via_read_ca2),	DEVCB_HANDLER(mirage_via_read_cb2),	DEVCB_HANDLER(mirage_via_write_porta),	DEVCB_HANDLER(mirage_via_write_portb),	DEVCB_NULL,	DEVCB_NULL,	DEVCB_NULL,	DEVCB_NULL,	DEVCB_CPU_INPUT_LINE("maincpu", M6809_IRQ_LINE)};static ACIA6850_INTERFACE( mirage_acia6850_interface ){	0,				// tx clock	0,				// rx clock	DEVCB_NULL,			// rx in	DEVCB_NULL,			// rx out	DEVCB_NULL,			// cts in	DEVCB_NULL,			// rts out	DEVCB_NULL,			// dcd in	DEVCB_CPU_INPUT_LINE("maincpu", M6809_FIRQ_LINE)};static LEGACY_FLOPPY_OPTIONS_START(mirage)

	m_pias->cb1_w(m_cb1);}static const pia6821_interface pia21_intf ={	DEVCB_DRIVER_MEMBER(s7_state, dac_r),       /* port A in */	DEVCB_NULL,     /* port B in */	DEVCB_NULL,     /* line CA1 in */	DEVCB_LINE_GND,     /* line CB1 in */	DEVCB_LINE_VCC,     /* line CA2 in */	DEVCB_NULL,     /* line CB2 in */	DEVCB_DRIVER_MEMBER(s7_state, sound_w),     /* port A out */	DEVCB_DRIVER_MEMBER(s7_state, sol2_w),      /* port B out */	DEVCB_DRIVER_LINE_MEMBER(s7_state, pia21_ca2_w),        /* line CA2 out */	DEVCB_DRIVER_LINE_MEMBER(s7_state, pia21_cb2_w),        /* line CB2 out */	DEVCB_CPU_INPUT_LINE("maincpu", M6800_IRQ_LINE),        /* IRQA */	DEVCB_CPU_INPUT_LINE("maincpu", M6800_IRQ_LINE)     /* IRQB */};static const pia6821_interface pia22_intf ={	DEVCB_NULL,     /* port A in */	DEVCB_NULL,     /* port B in */	DEVCB_LINE_GND,     /* line CA1 in */	DEVCB_LINE_GND,     /* line CB1 in */	DEVCB_NULL,     /* line CA2 in */	DEVCB_NULL,     /* line CB2 in */	DEVCB_DRIVER_MEMBER(s7_state, sol0_w),      /* port A out */	DEVCB_DRIVER_MEMBER(s7_state, sol1_w),      /* port B out */	DEVCB_DRIVER_LINE_MEMBER(s7_state, pia22_ca2_w),        /* line CA2 out */	DEVCB_DRIVER_LINE_MEMBER(s7_state, pia22_cb2_w),        /* line CB2 out */

	if (offset == 0x10)	{		m_crtc->dack_w(space, 0, data);	}	else	{		return prog_space.write_byte(offset, data);	}}// busack on cpu connects to bai pinstatic Z80DMA_INTERFACE( dma_intf ){	//DEVCB_CPU_INPUT_LINE("maincpu", INPUT_LINE_HALT), //busreq - connects to busreq on cpu	DEVCB_DRIVER_LINE_MEMBER(zorba_state, busreq_w), //busreq - connects to busreq on cpu	DEVCB_CPU_INPUT_LINE("maincpu", INPUT_LINE_IRQ0), //int/pulse - connects to IRQ0 on cpu	DEVCB_NULL, //ba0 - not connected	DEVCB_DRIVER_MEMBER(zorba_state, memory_read_byte),	DEVCB_DRIVER_MEMBER(zorba_state, memory_write_byte),	DEVCB_DRIVER_MEMBER(zorba_state, io_read_byte),	DEVCB_DRIVER_MEMBER(zorba_state, io_write_byte),};static SLOT_INTERFACE_START( zorba_floppies )	SLOT_INTERFACE( "525dd", FLOPPY_525_DD )SLOT_INTERFACE_END// COM portstatic const i8251_interface u0_intf ={	DEVCB_NULL,

		else		{			state->m_i8751_return = port | 0x8000;			device_set_input_line(device, 6, HOLD_LINE);			state->m_i8751_needs_ack = 1;		}		state->m_latch = 0;	}	device_set_input_line(device, 7, HOLD_LINE);	/* VBL */}static const ym3526_interface ym3526_config ={	DEVCB_CPU_INPUT_LINE("audiocpu", M6502_IRQ_LINE)};/************************************* * *  Machine driver * *************************************/static MACHINE_START( karnov ){	karnov_state *state = machine.driver_data<karnov_state>();	state->m_maincpu = machine.device("maincpu");	state->m_audiocpu = machine.device("audiocpu");

*/WRITE_LINE_MEMBER( luxor_55_21046_device::dma_int_w ){	m_dma_irq = state;	// FDC and DMA interrupts are wire-ORed to the Z80	device_set_input_line(m_maincpu, INPUT_LINE_IRQ0, m_fdc_irq | m_dma_irq);}static UINT8 memory_read_byte(address_space *space, offs_t address) { return space->read_byte(address); }static void memory_write_byte(address_space *space, offs_t address, UINT8 data) { space->write_byte(address, data); }static Z80DMA_INTERFACE( dma_intf ){	DEVCB_CPU_INPUT_LINE(Z80_TAG, INPUT_LINE_HALT),	DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, luxor_55_21046_device, dma_int_w),	DEVCB_NULL,	DEVCB_MEMORY_HANDLER(Z80_TAG, PROGRAM, memory_read_byte),	DEVCB_MEMORY_HANDLER(Z80_TAG, PROGRAM, memory_write_byte),	DEVCB_MEMORY_HANDLER(Z80_TAG, IO, memory_read_byte),	DEVCB_MEMORY_HANDLER(Z80_TAG, IO, memory_write_byte)};//-------------------------------------------------//  wd17xx_interface fdc_intf//-------------------------------------------------WRITE_LINE_MEMBER( luxor_55_21046_device::fdc_intrq_w ){

		data &= m_io_x3->read();	if (!BIT(m_keylatch, 4))		data &= m_io_x4->read();	if (!BIT(m_keylatch, 5))		data &= m_io_x5->read();	if (!BIT(m_keylatch, 6))		data &= m_io_x6->read();	if (!BIT(m_keylatch, 7))		data &= m_io_x7->read();	return data;};Z80PIO_INTERFACE( super80_pio_intf ){	DEVCB_CPU_INPUT_LINE("maincpu", INPUT_LINE_IRQ0),	DEVCB_NULL,	DEVCB_DRIVER_MEMBER(super80_state, pio_port_a_w),	DEVCB_NULL,         /* portA ready active callback (not used in super80) */	DEVCB_DRIVER_MEMBER(super80_state,pio_port_b_r),	DEVCB_NULL,	DEVCB_NULL          /* portB ready active callback (not used in super80) */};/**************************** CASSETTE ROUTINES *****************************************************************/void super80_state::super80_cassette_motor( UINT8 data ){	if (data)		m_cassette->change_state(CASSETTE_MOTOR_DISABLED,CASSETTE_MASK_MOTOR);

	DEVCB_LINE(h19_ace_irq), // interrupt	DEVCB_NULL,	DEVCB_NULL};static const mc6845_interface h19_crtc6845_interface ={	"screen",	8 /*?*/,	NULL,	h19_update_row,	NULL,	DEVCB_NULL,	DEVCB_NULL,	DEVCB_NULL,	DEVCB_CPU_INPUT_LINE("maincpu", INPUT_LINE_NMI), // frame pulse	NULL};/* F4 Character Displayer */static const gfx_layout h19_charlayout ={	8, 10,					/* 8 x 10 characters */	128,					/* 128 characters */	1,					/* 1 bits per pixel */	{ 0 },					/* no bitplanes */	/* x offsets */	{ 0, 1, 2, 3, 4, 5, 6, 7 },	/* y offsets */	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8 },	8*16					/* every char takes 16 bytes */

WRITE_LINE_MEMBER( imi5000h_device::ctc_z1_w ){	m_ctc->trg2(state);	m_ctc->trg3(state);}WRITE_LINE_MEMBER( imi5000h_device::ctc_z2_w ){	//m_memory_enable = state;	m_maincpu->set_input_line(INPUT_LINE_NMI, state);}static Z80CTC_INTERFACE( ctc_intf ){	DEVCB_CPU_INPUT_LINE(Z80_TAG, INPUT_LINE_IRQ0),	DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, imi5000h_device, ctc_z0_w),	DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, imi5000h_device, ctc_z1_w),	DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, imi5000h_device, ctc_z2_w)};//-------------------------------------------------//  Z80PIO_INTERFACE( pio0_intf )//-------------------------------------------------READ8_MEMBER( imi5000h_device::pio0_pa_r ){	/*	    bit     description

}static const pia6821_interface d6800_mc6821_intf ={	DEVCB_DRIVER_MEMBER(d6800_state, d6800_keyboard_r), /* port A input */	DEVCB_DRIVER_MEMBER(d6800_state, d6800_cassette_r), /* port B input */	DEVCB_DRIVER_LINE_MEMBER(d6800_state, d6800_keydown_r), /* CA1 input */	DEVCB_DRIVER_LINE_MEMBER(d6800_state, d6800_rtc_pulse), /* CB1 input */	DEVCB_DRIVER_LINE_MEMBER(d6800_state, d6800_fn_key_r),  /* CA2 input */	DEVCB_NULL,                     /* CB2 input */	DEVCB_DRIVER_MEMBER(d6800_state, d6800_keyboard_w), /* port A output */	DEVCB_DRIVER_MEMBER(d6800_state, d6800_cassette_w), /* port B output */	DEVCB_NULL,                     /* CA2 output */	DEVCB_DRIVER_LINE_MEMBER(d6800_state, d6800_screen_w),  /* CB2 output */	DEVCB_CPU_INPUT_LINE("maincpu", M6800_IRQ_LINE),    /* IRQA output */	DEVCB_CPU_INPUT_LINE("maincpu", M6800_IRQ_LINE)     /* IRQB output */};/* Machine Initialization */void d6800_state::machine_start(){}void d6800_state::machine_reset(){	m_beeper->set_state(0);	m_rtc = 0;	m_cass_data[0] = 0;	m_cass_data[1] = 0;

	{ "z80pio" },	{ NULL }};/* z80 pio */READ8_MEMBER(senjyo_state::pio_pa_r){	return m_sound_cmd;}Z80PIO_INTERFACE( senjyo_pio_intf ){	DEVCB_CPU_INPUT_LINE("sub", INPUT_LINE_IRQ0),	DEVCB_DRIVER_MEMBER(senjyo_state,pio_pa_r),	DEVCB_NULL,	DEVCB_NULL,	DEVCB_NULL,	DEVCB_NULL,	DEVCB_NULL};/* z80 ctc */Z80CTC_INTERFACE( senjyo_ctc_intf ){	DEVCB_CPU_INPUT_LINE("sub", INPUT_LINE_IRQ0), /* interrupt handler */	DEVCB_DEVICE_LINE_MEMBER("z80ctc", z80ctc_device, trg1),    /* ZC/TO0 callback */	DEVCB_NULL,                                                 /* ZC/TO1 callback */	DEVCB_DRIVER_LINE_MEMBER(senjyo_state, sound_line_clock)    /* ZC/TO2 callback */

//  C64_EXPANSION_INTERFACE( expansion_intf )//-------------------------------------------------WRITE_LINE_MEMBER( vic10_state::exp_irq_w ){	m_exp_irq = state;	check_interrupts();}static VIC10_EXPANSION_INTERFACE( expansion_intf ){	DEVCB_DRIVER_LINE_MEMBER(vic10_state, exp_irq_w),	DEVCB_DEVICE_LINE_MEMBER(MOS6526_TAG, mos6526_device, sp_w),	DEVCB_DEVICE_LINE_MEMBER(MOS6526_TAG, mos6526_device, cnt_w),	DEVCB_CPU_INPUT_LINE(M6510_TAG, INPUT_LINE_RESET)};//**************************************************************************//  MACHINE INITIALIZATION//**************************************************************************//-------------------------------------------------//  MACHINE_START( vic10 )//-------------------------------------------------void vic10_state::machine_start(){	// allocate memory