diff --git a/src/emu/cpu/m6502/m4510.c b/src/emu/cpu/m6502/m4510.c
index 390422c5679..96a2603fffc 100644
--- a/src/emu/cpu/m6502/m4510.c
+++ b/src/emu/cpu/m6502/m4510.c
@@ -70,6 +70,7 @@ void m4510_device::device_start()
 
 void m4510_device::device_reset()
 {
+	m65ce02_device::device_reset();
 	map_offset[0] = map_offset[1] = 0;
 	map_enable = 0;
 	nomap = true;
diff --git a/src/emu/cpu/m6502/m6502.c b/src/emu/cpu/m6502/m6502.c
index aa158940f90..3b0f5fa12f8 100644
--- a/src/emu/cpu/m6502/m6502.c
+++ b/src/emu/cpu/m6502/m6502.c
@@ -122,6 +122,7 @@ void m6502_device::init()
 	inst_substate = 0;
 	sync = false;
 	end_cycles = 0;
+	inhibit_interrupts = false;
 }
 
 void m6502_device::device_reset()
@@ -150,7 +151,7 @@ UINT32 m6502_device::execute_max_cycles() const
 
 UINT32 m6502_device::execute_input_lines() const
 {
-	return 3;
+	return NMI_LINE+1;
 }
 
 void m6502_device::do_adc_d(UINT8 val)
diff --git a/src/emu/cpu/m6502/m6509.c b/src/emu/cpu/m6502/m6509.c
index 007d6effd8d..2e8abefe749 100644
--- a/src/emu/cpu/m6502/m6509.c
+++ b/src/emu/cpu/m6502/m6509.c
@@ -65,6 +65,7 @@ void m6509_device::device_start()
 
 void m6509_device::device_reset()
 {
+	m6502_device::device_reset();
 	bank_i = 0x0f;
 	bank_y = 0x0f;
 }
diff --git a/src/emu/cpu/m6502/m6510.c b/src/emu/cpu/m6502/m6510.c
index 55ef1a4efcf..1121392e61b 100644
--- a/src/emu/cpu/m6502/m6510.c
+++ b/src/emu/cpu/m6502/m6510.c
@@ -92,6 +92,7 @@ void m6510_device::device_start()
 
 void m6510_device::device_reset()
 {
+	m6502_device::device_reset();
 	dir = 0x00;
 	port = 0x00;
 	drive = 0x00;