sinclair/specnext.cpp: Refactored INT/IRQ and implemented configurable DMA halt (delay)

Author: holub

src/devices/cpu/z80/z80n.cpp

@@ -31,6 +31,14 @@ z80n_device::z80n_device(const machine_config &mconfig, const char *tag, device_
 {
 }
 
+void z80n_device::nmi(int state)
+{
+	if (state != CLEAR_LINE)
+		set_service_attention<SA_NMI_PENDING, 1>();
+	else
+		set_service_attention<SA_NMI_PENDING, 0>();
+}
+
 void z80n_device::execute_run()
 {
 	#include "cpu/z80/z80n.hxx"

src/devices/cpu/z80/z80n.h

@@ -20,7 +20,7 @@ class z80n_device : public z80_device
 	bool nmi_stackless_r() { return m_stackless; }
 	void nmi_stackless_w(bool data) { m_stackless = data; }
 
-	void nmi() { set_service_attention<SA_NMI_PENDING, 1>(); }
+	void nmi(int state);
 
 protected:
 	virtual void device_start() override ATTR_COLD;