m68000: Add overrideable method to signal RESET instruction to internal peripherals (nw)

src/devices/cpu/m68000/m68000.h

@@ -349,6 +349,8 @@ protected:
 #include "m68kops.h"
 #include "m68kfpu.hxx"
 #include "m68kmmu.h"
+
+	virtual void m68k_reset_peripherals() { }
 };
 
 

src/devices/machine/68340.cpp

@@ -262,3 +262,12 @@ void m68340_cpu_device::device_start()
 
 	m_int_ack_callback = device_irq_acknowledge_delegate(FUNC(m68340_cpu_device::int_ack), this);
 }
+
+void m68340_cpu_device::m68k_reset_peripherals()
+{
+	m_m68340SIM->module_reset();
+	m_m68340DMA->module_reset();
+	m_serial->module_reset();
+	m_timer[0]->module_reset();
+	m_timer[1]->module_reset();
+}

src/devices/machine/68340.h

@@ -49,6 +49,8 @@ protected:
 	virtual void device_reset() override;
 	virtual void device_add_mconfig(machine_config &config) override;
 
+	virtual void m68k_reset_peripherals() override;
+
 private:
 	required_device<mc68340_serial_module_device> m_serial;
 	required_device_array<mc68340_timer_module_device, 2> m_timer;

src/devices/machine/68340dma.cpp

@@ -25,5 +25,10 @@ WRITE32_MEMBER( m68340_cpu_device::m68340_internal_dma_w )
 }
 
 void m68340_dma::reset()
+{
+	module_reset();
+}
+
+void m68340_dma::module_reset()
 {
 }

src/devices/machine/68340dma.h

@@ -10,6 +10,7 @@ class m68340_dma
 {
 public:
 	void reset();
+	void module_reset();
 };
 
 #endif // MAME_MACHINE_68340DMA_H

src/devices/machine/68340ser.cpp

@@ -157,4 +157,9 @@ mc68340_serial_module_device::mc68340_serial_module_device(const machine_config
 {
 }
 
+void mc68340_serial_module_device::module_reset()
+{
+	mc68340_duart_device::device_reset();
+}
+
 DEFINE_DEVICE_TYPE(MC68340_SERIAL_MODULE, mc68340_serial_module_device, "mc68340sermod", "MC68340 Serial Module")

src/devices/machine/68340ser.h

@@ -27,6 +27,8 @@ public:
 	uint8_t irq_vector() const { return m_ivr; }
 	uint8_t arbitrate(uint8_t level) const { return (irq_level() == level) ? (m_mcrl & REG_MCRL_ARBLV) : 0; }
 
+	void module_reset();
+
 protected:
 	m68340_cpu_device *m_cpu;
 

src/devices/machine/68340sim.cpp

@@ -493,6 +493,12 @@ void m68340_sim::reset()
 	m_pit_irq = false;
 }
 
+void m68340_sim::module_reset()
+{
+	// SYS set in RSR, nothing else happens
+	m_avr_rsr = (m_avr_rsr & 0xff00) | 0x02;
+}
+
 /* do_tick_pit works on whole clock cycles, no flank support */
 void m68340_cpu_device::do_tick_pit()
 {

src/devices/machine/68340sim.h

@@ -35,6 +35,7 @@ public:
 	bool m_pit_irq;
 
 	void reset();
+	void module_reset();
 
 	enum {
 		REG_MCR          = 0x00,

src/devices/machine/68340tmu.cpp

@@ -308,6 +308,16 @@ void mc68340_timer_module_device::device_start()
 	m_tin_in_cb.resolve_safe();
 }
 
+void mc68340_timer_module_device::device_reset()
+{
+	module_reset();
+}
+
+void mc68340_timer_module_device::module_reset()
+{
+	// TODO
+}
+
 void mc68340_timer_module_device::do_timer_irq()
 {
 	assert((m_sr & (REG_SR_TO | REG_SR_TG | REG_SR_TC)) != 0);

src/devices/machine/68340tmu.h

@@ -14,9 +14,6 @@ class mc68340_timer_module_device : public device_t
 public:
 	mc68340_timer_module_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
 
-	// device-level overrides
-	virtual void device_start() override;
-
 	READ16_MEMBER( read );
 	WRITE16_MEMBER( write );
 	DECLARE_WRITE_LINE_MEMBER( tin_w );
@@ -26,7 +23,13 @@ public:
 	uint8_t irq_vector() const { return m_ir & REG_IR_INTVEC; }
 	uint8_t arbitrate(uint8_t level) const { return (irq_level() == level) ? (m_mcr & REG_MCR_ARBLV) : 0; }
 
- protected:
+	void module_reset();
+
+protected:
+	// device-level overrides
+	virtual void device_start() override;
+	virtual void device_reset() override;
+
 	m68340_cpu_device *m_cpu;
 
 	uint16_t m_mcr;