abc1600: Implement reset button. [Curt Coder]

src/devices/bus/abckb/abc77.cpp

@@ -470,6 +470,16 @@ void abc77_device::txd_w(int state)
 }
 
 
+//-------------------------------------------------
+//  reset_w -
+//-------------------------------------------------
+
+void abc77_device::reset_w(int state)
+{
+	// connected to NE556 pin 8
+}
+
+
 //-------------------------------------------------
 //  p1_r -
 //-------------------------------------------------

src/devices/bus/abckb/abc77.h

@@ -49,6 +49,7 @@ protected:
 
 	// abc_keyboard_interface overrides
 	virtual void txd_w(int state) override;
+	virtual void reset_w(int state) override;
 
 private:
 	TIMER_CALLBACK_MEMBER(serial_clock);

src/devices/bus/abckb/abc99.cpp

@@ -533,6 +533,16 @@ void abc99_device::txd_w(int state)
 }
 
 
+//-------------------------------------------------
+//  reset_w -
+//-------------------------------------------------
+
+void abc99_device::reset_w(int state)
+{
+	m_mousecpu->set_input_line(INPUT_LINE_RESET, state);
+}
+
+
 //-------------------------------------------------
 //  key_x_w -
 //-------------------------------------------------

src/devices/bus/abckb/abc99.h

@@ -50,6 +50,7 @@ protected:
 
 	// abc_keyboard_interface overrides
 	virtual void txd_w(int state) override;
+	virtual void reset_w(int state) override;
 
 private:
 	enum

src/devices/bus/abckb/abckb.cpp

@@ -48,7 +48,8 @@ abc_keyboard_port_device::abc_keyboard_port_device(const machine_config &mconfig
 	device_single_card_slot_interface<abc_keyboard_interface>(mconfig, *this),
 	m_out_rx_handler(*this),
 	m_out_trxc_handler(*this),
-	m_out_keydown_handler(*this), m_card(nullptr)
+	m_out_keydown_handler(*this),
+	m_card(nullptr)
 {
 }
 
@@ -68,6 +69,20 @@ void abc_keyboard_port_device::device_start()
 }
 
 
+//-------------------------------------------------
+//  device_reset - device-specific reset
+//-------------------------------------------------
+
+void abc_keyboard_port_device::device_reset()
+{
+	if (m_card)
+	{
+		m_card->reset_w(ASSERT_LINE);
+		m_card->reset_w(CLEAR_LINE);
+	}
+}
+
+
 //-------------------------------------------------
 //  write_rx -
 //-------------------------------------------------

src/devices/bus/abckb/abckb.h

@@ -49,6 +49,7 @@ public:
 protected:
 	// device-level overrides
 	virtual void device_start() override;
+	virtual void device_reset() override;
 
 	devcb_write_line m_out_rx_handler;
 	devcb_write_line m_out_trxc_handler;
@@ -62,6 +63,7 @@ class abc_keyboard_interface : public device_interface
 {
 public:
 	virtual void txd_w(int state) { }
+	virtual void reset_w(int state) { }
 
 protected:
 	// construction/destruction

src/mame/luxor/abc1600.cpp

@@ -41,13 +41,15 @@
 		- keyboard test fails
 		- mouse test fails
     - loadsys1 core dump (/etc/mkfs -b 1024 -v 69000 /dev/sa40)
-    - short/long reset (RSTBUT)
+	- crashes after reset
     - CIO
         - optimize timers!
         - port C, open drain output bit PC1 (RTC/NVRAM data)
     - connect RS-232 printer port
     - Z80 SCC/DART interrupt chain
     - [:2a:chb] - TX FIFO is full, discarding data
+		[:] SCC write 000003
+		[:2a:chb] void z80scc_channel::data_write(uint8_t): Data Register Write: 17 ' '
 
 */
 
@@ -534,12 +536,30 @@ void abc1600_state::mac_mem(address_map &map)
 //  INPUT PORTS
 //**************************************************************************
 
+//-------------------------------------------------
+//  INPUT_CHANGED_MEMBER( reset )
+//-------------------------------------------------
+
+INPUT_CHANGED_MEMBER( abc1600_state::reset )
+{
+	if (!oldval && newval)
+	{
+		machine_reset();
+	}
+
+	m_mac->rstbut_w(newval);
+}
+
+
 //-------------------------------------------------
 //  INPUT_PORTS( abc1600 )
 //-------------------------------------------------
 
 static INPUT_PORTS_START( abc1600 )
-	// inputs defined in machine/abc99.cpp
+	// keyboard inputs defined in machine/abc99.cpp
+
+	PORT_START("RESET")
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("Reset") PORT_CHANGED_MEMBER(DEVICE_SELF, abc1600_state, reset, 0)
 INPUT_PORTS_END
 
 
@@ -873,6 +893,13 @@ void abc1600_state::machine_reset()
 
 	// clear NMI
 	m_maincpu->set_input_line(M68K_IRQ_7, CLEAR_LINE);
+
+	// reset devices
+	m_mac->reset();
+	m_maincpu->reset();
+	m_cio->reset();
+	m_scc->reset();
+	m_kb->reset();
 }
 
 

src/mame/luxor/abc1600.h

@@ -80,11 +80,14 @@ public:
 		m_bus0i(*this, BUS0I_TAG),
 		m_bus0x(*this, BUS0X_TAG),
 		m_bus1(*this, BUS1_TAG),
-		m_bus2(*this, BUS2_TAG)
+		m_bus2(*this, BUS2_TAG),
+		m_kb(*this, ABC_KEYBOARD_PORT_TAG)
 	{ }
 
 	void abc1600(machine_config &config);
 
+	DECLARE_INPUT_CHANGED_MEMBER( reset );
+
 private:
 	required_device<m68008_device> m_maincpu;
 	required_device<abc1600_mac_device> m_mac;
@@ -105,6 +108,7 @@ private:
 	required_device<abcbus_slot_device> m_bus0x;
 	required_device<abcbus_slot_device> m_bus1;
 	required_device<abcbus_slot_device> m_bus2;
+	required_device<abc_keyboard_port_device> m_kb;
 
 	virtual void machine_start() override;
 	virtual void machine_reset() override;

src/mame/luxor/abc1600mac.cpp

@@ -113,6 +113,7 @@ abc1600_mac_device::abc1600_mac_device(const machine_config &mconfig, const char
 	m_watchdog(*this, "watchdog"),
 	m_read_tren(*this),
 	m_write_tren(*this),
+	m_rstbut(0),
 	m_boote(0),
 	m_magic(0),
 	m_task(0),
@@ -133,6 +134,7 @@ void abc1600_mac_device::device_start()
 	m_write_tren.resolve_all_safe();
 
 	// state saving
+	save_item(NAME(m_rstbut));
 	save_item(NAME(m_boote));
 	save_item(NAME(m_magic));
 	save_item(NAME(m_task));
@@ -330,7 +332,7 @@ uint8_t abc1600_mac_device::cause_r()
 
 	*/
 
-	uint8_t data = 0;
+	uint8_t data = m_rstbut;
 
 	if (!m_partst)
 	{

src/mame/luxor/abc1600mac.h

@@ -43,6 +43,8 @@ public:
 	auto in_tren2_cb() { return m_read_tren[2].bind(); }
 	auto out_tren2_cb() { return m_write_tren[2].bind(); }
 
+	void rstbut_w(int state) { m_rstbut = state; }
+
 	uint8_t read(offs_t offset);
 	void write(offs_t offset, uint8_t data);
 
@@ -120,6 +122,7 @@ private:
 	devcb_read8::array<3> m_read_tren;
 	devcb_write8::array<3> m_write_tren;
 
+	bool m_rstbut = 0;
 	bool m_boote = 0;
 	bool m_magic = 0;
 	int m_task = 0;