tms1000: split execute_run into execute_one (nw)

src/devices/cpu/tms1000/tms1000c.cpp

@@ -64,3 +64,21 @@ u32 tms1000c_cpu_device::decode_micro(u8 sel)
 
 	return decode;
 }
+
+
+// execute
+void tms1000c_cpu_device::execute_run()
+{
+	while (m_icount > 0)
+	{
+		if (m_halt_pin)
+		{
+			// not running (output pins remain unchanged)
+			m_icount = 0;
+			return;
+		}
+
+		m_icount--;
+		execute_one();
+	}
+}

src/devices/cpu/tms1000/tms1000c.h

@@ -23,6 +23,7 @@ protected:
 	// overrides
 	virtual void device_add_mconfig(machine_config &config) override;
 	virtual u32 decode_micro(u8 sel) override;
+	virtual void execute_run() override;
 
 	virtual void op_br() override { op_br3(); } // 3-level stack
 	virtual void op_call() override { op_call3(); } // "

src/devices/cpu/tms1000/tms1k_base.cpp

@@ -144,7 +144,7 @@ void tms1k_base_device::device_start()
 	m_r = 0;
 	m_o = 0;
 	m_o_index = 0;
-	m_halt = false;
+	m_halt_pin = false;
 	m_cki_bus = 0;
 	m_c4 = 0;
 	m_p = 0;
@@ -184,7 +184,7 @@ void tms1k_base_device::device_start()
 	save_item(NAME(m_r));
 	save_item(NAME(m_o));
 	save_item(NAME(m_o_index));
-	save_item(NAME(m_halt));
+	save_item(NAME(m_halt_pin));
 	save_item(NAME(m_cki_bus));
 	save_item(NAME(m_c4));
 	save_item(NAME(m_p));
@@ -314,7 +314,7 @@ void tms1k_base_device::execute_set_input(int line, int state)
 		return;
 
 	// HALT pin (CMOS only)
-	m_halt = bool(state);
+	m_halt_pin = bool(state);
 }
 
 void tms1k_base_device::write_o_output(u8 index)
@@ -604,22 +604,11 @@ void tms1k_base_device::op_sbl()
 
 
 //-------------------------------------------------
-//  execute_run
+//  execute
 //-------------------------------------------------
 
-void tms1k_base_device::execute_run()
+void tms1k_base_device::execute_one()
 {
-	while (m_icount > 0)
-	{
-		m_icount--;
-
-		if (m_halt)
-		{
-			// not running (output pins remain unchanged)
-			m_icount = 0;
-			return;
-		}
-
 	switch (m_subcycle)
 	{
 	case 0:
@@ -745,4 +734,12 @@ void tms1k_base_device::execute_run()
 
 	m_subcycle = (m_subcycle + 1) % 6;
 }
+
+void tms1k_base_device::execute_run()
+{
+	while (m_icount > 0)
+	{
+		m_icount--;
+		execute_one();
+	}
 }

src/devices/cpu/tms1000/tms1k_base.h

@@ -106,10 +106,11 @@ protected:
 
 	// device_execute_interface overrides
 	virtual u32 execute_min_cycles() const override { return 1; }
-	virtual u32 execute_max_cycles() const override { return 6; }
+	virtual u32 execute_max_cycles() const override { return 1; }
 	virtual u32 execute_input_lines() const override { return 1; }
 	virtual void execute_set_input(int line, int state) override;
 	virtual void execute_run() override;
+	virtual void execute_one();
 
 	// device_memory_interface overrides
 	virtual space_config_vector memory_space_config() const override;
@@ -256,7 +257,7 @@ protected:
 	int m_subcycle;
 	int m_icount;
 	u8 m_o_index;
-	bool m_halt;    // halt pin state
+	bool m_halt_pin;
 
 	u8 m_o_pins;    // how many O pins
 	u8 m_r_pins;    // how many R pins