(MESS) Start removing usage of deprecated 68681 INPORT_CALLBACK. [R. Belmont]

cat: Removed hacks required by the old 68681 implementation; keyboard works again. [R. Belmont]

src/emu/machine/n68681.c

@@ -97,7 +97,7 @@ void duartn68681_device::device_start()
 	write_irq.resolve_safe();
 	write_a_tx.resolve_safe();
 	write_b_tx.resolve_safe();
-	read_inport.resolve_safe(0);
+	read_inport.resolve();
 	write_outport.resolve_safe();
 
 	duart_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(duartn68681_device::duart_timer_callback),this), NULL);
@@ -298,7 +298,14 @@ READ8_MEMBER( duartn68681_device::read )
 			break;
 
 		case 0x0d: /* IP */
+			if (!read_inport.isnull())
+			{
 				r = read_inport();	// TODO: go away
+			}
+			else
+			{
+				r = IP_last_state;
+			}
 			break; 
 
 		case 0x0e: /* Start counter command */

src/emu/machine/n68681.h

@@ -17,6 +17,7 @@
 #define MCFG_DUARTN68681_B_TX_CALLBACK(_cb) \
 	devcb = &duartn68681_device::set_b_tx_cb(*device, DEVCB2_##_cb);
 
+// deprecated: use ipX_w() instead
 #define MCFG_DUARTN68681_INPORT_CALLBACK(_cb) \
 	devcb = &duartn68681_device::set_inport_cb(*device, DEVCB2_##_cb);
 

src/mess/drivers/cat.c

@@ -406,7 +406,6 @@ public:
 	optional_device<via6522_device> m_via1; // only swyft uses this
 	DECLARE_WRITE_LINE_MEMBER(cat_duart_irq_handler);
 	DECLARE_WRITE_LINE_MEMBER(cat_duart_txa);
-	DECLARE_READ8_MEMBER(cat_duart_input);
 	DECLARE_WRITE8_MEMBER(cat_duart_output);
 	//required_device<speaker_sound_device> m_speaker;
 	optional_shared_ptr<UINT16> m_svram;
@@ -993,11 +992,10 @@ TIMER_CALLBACK_MEMBER(cat_state::counter_6ms_callback)
 {
 	// This is effectively also the KTOBF line 'clock' output to the d-latch before the duart
 	// Hence, invert the d-latch on the duart's input ports.
-	// is there some way to 'strobe' the duart to tell it that its input ports just changed?
+	// n68681 now properly generates interrupts when this bit changes, the previous hack is no longer necessary.
-	// with the devcb stuff, there definitely should be!
 	m_duart_inp ^= 0x04;
+	m_duart->ip2_w((m_duart_inp>>2)&1);
 	m_6ms_counter++;
-	m_maincpu->set_input_line(M68K_IRQ_1, ASSERT_LINE); // hack until duart ints work; as of march 2013 they do not work correctly here (they fire at the wrong rate)
 }
 
 IRQ_CALLBACK_MEMBER(cat_state::cat_int_ack)
@@ -1066,11 +1064,13 @@ UINT32 cat_state::screen_update_cat(screen_device &screen, bitmap_ind16 &bitmap,
  */
 WRITE_LINE_MEMBER(cat_state::cat_duart_irq_handler)
 {
+	int irqvector = m_duart->get_irq_vector();
+
 #ifdef DEBUG_DUART_IRQ_HANDLER
-	fprintf(stderr, "Duart IRQ handler called: state: %02X, vector: %06X\n", state, vector);
+	fprintf(stderr, "Duart IRQ handler called: state: %02X, vector: %06X\n", state, irqvector);
 #endif
 	m_duart_irq_state = state;
-	//device->m_maincpu->set_input_line_and_vector(M68K_IRQ_1, state, vector);
+	m_maincpu->set_input_line_and_vector(M68K_IRQ_1, state, irqvector);
 }
 
 WRITE_LINE_MEMBER(cat_state::cat_duart_txa)
@@ -1088,13 +1088,6 @@ WRITE_LINE_MEMBER(cat_state::cat_duart_txa)
  * IP4: Centronics BUSY
  * IP5: DSR
  */
-READ8_MEMBER(cat_state::cat_duart_input)
-{
-#ifdef DEBUG_DUART_INPUT_LINES
-	fprintf(stderr, "Duart input lines read!\n");
-#endif
-	return m_duart_inp;
-}
 
 /* mc68681 DUART Output pins:
  * OP0: RTS [using the duart builtin hardware-RTS feature?]
@@ -1138,7 +1131,6 @@ static MACHINE_CONFIG_START( cat, cat_state )
 	MCFG_DUARTN68681_ADD( "duartn68681", XTAL_19_968MHz*2/11 ) // duart is normally clocked by 3.6864mhz xtal, but cat seemingly uses a divider from the main xtal instead which probably yields 3.63054545Mhz. There is a trace to cut and a mounting area to allow using an actual 3.6864mhz xtal if you so desire
 	MCFG_DUARTN68681_IRQ_CALLBACK(WRITELINE(cat_state, cat_duart_irq_handler))
 	MCFG_DUARTN68681_A_TX_CALLBACK(WRITELINE(cat_state, cat_duart_txa))
-	MCFG_DUARTN68681_INPORT_CALLBACK(READ8(cat_state, cat_duart_input))
 	MCFG_DUARTN68681_OUTPORT_CALLBACK(WRITE8(cat_state, cat_duart_output))
 
 	MCFG_NVRAM_ADD_0FILL("nvram")

src/mess/drivers/esq1.c

@@ -409,7 +409,6 @@ public:
 	DECLARE_WRITE_LINE_MEMBER(duart_irq_handler);
 	DECLARE_WRITE_LINE_MEMBER(duart_tx_a);
 	DECLARE_WRITE_LINE_MEMBER(duart_tx_b);
-	DECLARE_READ8_MEMBER(duart_input);
 	DECLARE_WRITE8_MEMBER(duart_output);
 
 	int m_mapper_state;
@@ -537,11 +536,6 @@ WRITE_LINE_MEMBER(esq1_state::duart_irq_handler)
 	m_maincpu->set_input_line(M6809_IRQ_LINE, state);
 };
 
-READ8_MEMBER(esq1_state::duart_input)
-{
-	return 0;
-}
-
 WRITE8_MEMBER(esq1_state::duart_output)
 {
 	int bank = ((data >> 1) & 0x7);
@@ -606,7 +600,6 @@ static MACHINE_CONFIG_START( esq1, esq1_state )
 	MCFG_DUARTN68681_IRQ_CALLBACK(WRITELINE(esq1_state, duart_irq_handler))
 	MCFG_DUARTN68681_A_TX_CALLBACK(WRITELINE(esq1_state, duart_tx_a))
 	MCFG_DUARTN68681_B_TX_CALLBACK(WRITELINE(esq1_state, duart_tx_b))
-	MCFG_DUARTN68681_INPORT_CALLBACK(READ8(esq1_state, duart_input))
 	MCFG_DUARTN68681_OUTPORT_CALLBACK(WRITE8(esq1_state, duart_output))
 
 	MCFG_ESQPANEL2x40_ADD("panel", esqpanel_config)

src/mess/drivers/esq5505.c

@@ -196,7 +196,6 @@ public:
 	DECLARE_WRITE_LINE_MEMBER(duart_irq_handler);
 	DECLARE_WRITE_LINE_MEMBER(duart_tx_a);
 	DECLARE_WRITE_LINE_MEMBER(duart_tx_b);
-	DECLARE_READ8_MEMBER(duart_input);
 	DECLARE_WRITE8_MEMBER(duart_output);
 
 	int m_system_type;
@@ -269,6 +268,9 @@ void esq5505_state::machine_start()
 
 void esq5505_state::machine_reset()
 {
+	floppy_connector *con = machine().device<floppy_connector>("wd1772:0");
+	floppy_image_device *floppy = con ? con->get_device() : 0;
+
 	m_rom = (UINT16 *)(void *)memregion("osrom")->base();
 	m_ram = (UINT16 *)(void *)memshare("osram")->ptr();
 	m_maincpu->set_irq_acknowledge_callback(device_irq_acknowledge_delegate(FUNC(esq5505_state::maincpu_irq_acknowledge_callback),this));
@@ -282,6 +284,27 @@ void esq5505_state::machine_reset()
 	m_analog_values[5] = 0xffff; // Volume control: full on.
 	m_analog_values[6] = 0x7fc0; // Battery voltage: something reasonable.
 	m_analog_values[7] = 0x5540; // vRef to check battery.
+
+	// on VFX, bit 0 is 1 for 'cartridge present'.
+	// on VFX-SD and later, bit 0 is 1 for floppy present, bit 1 is 1 for cartridge present
+	if (mame_stricmp(machine().system().name, "vfx") == 0)
+	{
+		// todo: handle VFX cart-in when we support cartridges
+		m_duart->ip0_w(ASSERT_LINE);
+	}
+	else
+	{
+		m_duart->ip1_w(CLEAR_LINE);
+
+		if (floppy)
+		{
+			m_duart->ip0_w(ASSERT_LINE);
+		}
+		else
+		{
+			m_duart->ip0_w(CLEAR_LINE);
+		}
+	}
 }
 
 void esq5505_state::update_irq_to_maincpu() {
@@ -420,33 +443,6 @@ WRITE_LINE_MEMBER(esq5505_state::duart_irq_handler)
 	update_irq_to_maincpu();
 };
 
-READ8_MEMBER(esq5505_state::duart_input)
-{
-	floppy_connector *con = machine().device<floppy_connector>("wd1772:0");
-	floppy_image_device *floppy = con ? con->get_device() : 0;
-	UINT8 result = 0;   // DUART input lines are separate from the output lines
-
-	// on VFX, bit 0 is 1 for 'cartridge present'.
-	// on VFX-SD and later, bit 0 is 1 for floppy present, bit 1 is 1 for cartridge present
-	if (mame_stricmp(machine().system().name, "vfx") == 0)
-	{
-		// todo: handle VFX cart-in when we support cartridges
-	}
-	else
-	{
-		if (floppy)
-		{
-			// ready_r returns true if the drive is *not* ready, false if it is
-//          if (!floppy->ready_r())
-			{
-				result |= 1;
-			}
-		}
-	}
-
-	return result;
-}
-
 WRITE8_MEMBER(esq5505_state::duart_output)
 {
 	floppy_connector *con = machine().device<floppy_connector>("wd1772:0");
@@ -655,7 +651,6 @@ static MACHINE_CONFIG_START( vfx, esq5505_state )
 	MCFG_DUARTN68681_IRQ_CALLBACK(WRITELINE(esq5505_state, duart_irq_handler))
 	MCFG_DUARTN68681_A_TX_CALLBACK(WRITELINE(esq5505_state, duart_tx_a))
 	MCFG_DUARTN68681_B_TX_CALLBACK(WRITELINE(esq5505_state, duart_tx_b))
-	MCFG_DUARTN68681_INPORT_CALLBACK(READ8(esq5505_state, duart_input))
 	MCFG_DUARTN68681_OUTPORT_CALLBACK(WRITE8(esq5505_state, duart_output))
 	MCFG_DUARTN68681_SET_EXTERNAL_CLOCKS(500000, 500000, 1000000, 1000000)
 
@@ -717,7 +712,6 @@ static MACHINE_CONFIG_START(vfx32, esq5505_state)
 	MCFG_DUARTN68681_IRQ_CALLBACK(WRITELINE(esq5505_state, duart_irq_handler))
 	MCFG_DUARTN68681_A_TX_CALLBACK(WRITELINE(esq5505_state, duart_tx_a))
 	MCFG_DUARTN68681_B_TX_CALLBACK(WRITELINE(esq5505_state, duart_tx_b))
-	MCFG_DUARTN68681_INPORT_CALLBACK(READ8(esq5505_state, duart_input))
 	MCFG_DUARTN68681_OUTPORT_CALLBACK(WRITE8(esq5505_state, duart_output))
 	MCFG_DUARTN68681_SET_EXTERNAL_CLOCKS(500000, 500000, 1000000, 1000000)
 

src/mess/drivers/esqkt.c

@@ -56,7 +56,6 @@ public:
 	DECLARE_WRITE_LINE_MEMBER(duart_irq_handler);
 	DECLARE_WRITE_LINE_MEMBER(duart_tx_a);
 	DECLARE_WRITE_LINE_MEMBER(duart_tx_b);
-	DECLARE_READ8_MEMBER(duart_input);
 	DECLARE_WRITE8_MEMBER(duart_output);
 
 	UINT8 m_duart_io;
@@ -172,13 +171,6 @@ WRITE_LINE_MEMBER(esqkt_state::duart_irq_handler)
 	m_maincpu->set_input_line(M68K_IRQ_3, state);
 };
 
-READ8_MEMBER(esqkt_state::duart_input)
-{
-	UINT8 result = 0;   // DUART input lines are separate from the output lines
-
-	return result;
-}
-
 WRITE8_MEMBER(esqkt_state::duart_output)
 {
 	m_duart_io = data;
@@ -244,7 +236,6 @@ static MACHINE_CONFIG_START( kt, esqkt_state )
 	MCFG_DUARTN68681_IRQ_CALLBACK(WRITELINE(esqkt_state, duart_irq_handler))
 	MCFG_DUARTN68681_A_TX_CALLBACK(WRITELINE(esqkt_state, duart_tx_a))
 	MCFG_DUARTN68681_B_TX_CALLBACK(WRITELINE(esqkt_state, duart_tx_b))
-	MCFG_DUARTN68681_INPORT_CALLBACK(READ8(esqkt_state, duart_input))
 	MCFG_DUARTN68681_OUTPORT_CALLBACK(WRITE8(esqkt_state, duart_output))
 	MCFG_DUARTN68681_SET_EXTERNAL_CLOCKS(500000, 500000, 1000000, 1000000)
 	MCFG_DUARTN68681_SET_EXTERNAL_CLOCKS(500000, 500000, 1000000, 1000000)

src/mess/drivers/ht68k.c

@@ -58,7 +58,6 @@ public:
 	floppy_image_device *m_floppy;
 	DECLARE_WRITE_LINE_MEMBER(duart_irq_handler);
 	DECLARE_WRITE_LINE_MEMBER(duart_txb);
-	DECLARE_READ8_MEMBER(duart_input);
 	DECLARE_WRITE8_MEMBER(duart_output);
 	required_shared_ptr<UINT16> m_p_ram;
 	virtual void machine_reset();
@@ -101,11 +100,6 @@ WRITE_LINE_MEMBER(ht68k_state::duart_txb)
 	//This is the second serial channel named AUX, for modem or other serial devices.
 }
 
-READ8_MEMBER(ht68k_state::duart_input)
-{
-	return 0;
-}
-
 WRITE8_MEMBER(ht68k_state::duart_output)
 {
 	m_floppy = NULL;
@@ -136,7 +130,6 @@ static MACHINE_CONFIG_START( ht68k, ht68k_state )
 	MCFG_DUARTN68681_IRQ_CALLBACK(WRITELINE(ht68k_state, duart_irq_handler))
 	MCFG_DUARTN68681_A_TX_CALLBACK(DEVWRITELINE("rs232", rs232_port_device, write_txd))
 	MCFG_DUARTN68681_B_TX_CALLBACK(WRITELINE(ht68k_state, duart_txb))
-	MCFG_DUARTN68681_INPORT_CALLBACK(READ8(ht68k_state, duart_input))
 	MCFG_DUARTN68681_OUTPORT_CALLBACK(WRITE8(ht68k_state, duart_output))
 
 	MCFG_RS232_PORT_ADD("rs232", default_rs232_devices, "serial_terminal")