diff --git a/src/emu/cpu/arm/arm.c b/src/emu/cpu/arm/arm.c
index 9d7f4f0ed6b..341bc09dcbd 100644
--- a/src/emu/cpu/arm/arm.c
+++ b/src/emu/cpu/arm/arm.c
@@ -230,6 +230,7 @@ arm_cpu_device::arm_cpu_device(const machine_config &mconfig, const char *tag, d
 	: cpu_device(mconfig, ARM, "ARM", tag, owner, clock, "arm", __FILE__)
 	, m_program_config("program", ENDIANNESS_LITTLE, 32, 26, 0)
 	, m_endian(ENDIANNESS_LITTLE)
+	, m_copro_type(ARM_COPRO_TYPE_UNKNOWN_CP15)
 {
 	memset(m_sArmRegister, 0x00, sizeof(m_sArmRegister));
 }
@@ -239,6 +240,7 @@ arm_cpu_device::arm_cpu_device(const machine_config &mconfig, device_type type,
 	: cpu_device(mconfig, type, name, tag, owner, clock, shortname, source)
 	, m_program_config("program", endianness, 32, 26, 0)
 	, m_endian(endianness)
+	, m_copro_type(ARM_COPRO_TYPE_UNKNOWN_CP15)
 {
 	memset(m_sArmRegister, 0x00, sizeof(m_sArmRegister));
 }
@@ -312,20 +314,6 @@ void arm_cpu_device::SetModeRegister( int mode, int rIndex, UINT32 value )
 
 /***************************************************************************/
 
-void arm_cpu_device::device_config_complete()
-{
-	// inherit a copy of the static data
-	const arm_interface *intf = reinterpret_cast<const arm_interface *>(static_config());
-	if (intf != NULL)
-		*static_cast<arm_interface *>(this) = *intf;
-
-	// or set default if none provided
-	else
-	{
-		coprotype = ARM_COPRO_TYPE_UNKNOWN_CP15;
-	}
-}
-
 void arm_cpu_device::device_reset()
 {
 	for ( int i = 0; i < 27; i++ )
@@ -430,7 +418,7 @@ void arm_cpu_device::execute_run()
 		}
 		else if ((insn & 0x0f000000u) == 0x0e000000u)   /* Coprocessor */
 		{
-			if(coprotype == 1)
+			if (m_copro_type == ARM_COPRO_TYPE_VL86C020)
 				HandleCoProVL86C020(insn);
 			else
 				HandleCoPro(insn);
diff --git a/src/emu/cpu/arm/arm.h b/src/emu/cpu/arm/arm.h
index c8eb9b3311c..3cca1ec8d4c 100644
--- a/src/emu/cpu/arm/arm.h
+++ b/src/emu/cpu/arm/arm.h
@@ -20,13 +20,8 @@ enum
 	ARM_COPRO_TYPE_VL86C020
 };
 
-struct arm_interface
-{
-	UINT8 coprotype;
-};
-
-#define ARM_INTERFACE(name) \
-	const arm_interface (name) =
+#define MCFG_ARM_COPRO(_type) \
+	arm_cpu_device::set_copro_type(*device, _type);
 
 
 enum
@@ -39,17 +34,17 @@ enum
 };
 
 
-class arm_cpu_device : public cpu_device,
-  					   public arm_interface
+class arm_cpu_device : public cpu_device
 {
 public:
 	// construction/destruction
 	arm_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
 	arm_cpu_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source, endianness_t endianness);
 
+	static void set_copro_type(device_t &device, int type) { downcast<arm_cpu_device &>(device).m_copro_type = type; }
+
 protected:
 	// device-level overrides
-	virtual void device_config_complete();
 	virtual void device_start();
 	virtual void device_reset();
 
@@ -81,6 +76,7 @@ protected:
 	address_space *m_program;
 	direct_read_data *m_direct;
 	endianness_t m_endian;
+	UINT8 m_copro_type;
 
 	void cpu_write32( int addr, UINT32 data );
 	void cpu_write8( int addr, UINT8 data );
@@ -105,7 +101,6 @@ protected:
 	int storeDec(UINT32 pat, UINT32 rbv);
 	static UINT32 BCDToDecimal(UINT32 value);
 	static UINT32 DecimalToBCD(UINT32 value);
-
 };
 
 
diff --git a/src/mess/drivers/a310.c b/src/mess/drivers/a310.c
index 0b33378e8ce..98e9d59e85d 100644
--- a/src/mess/drivers/a310.c
+++ b/src/mess/drivers/a310.c
@@ -350,17 +350,11 @@ WRITE_LINE_MEMBER( archimedes_state::a310_kart_rx_w )
 		archimedes_clear_irq_b(ARCHIMEDES_IRQB_KBD_XMIT_EMPTY);
 }
 
-static ARM_INTERFACE( a310_config )
-{
-	ARM_COPRO_TYPE_VL86C020
-};
-
-
 static MACHINE_CONFIG_START( a310, a310_state )
 	/* basic machine hardware */
 	MCFG_CPU_ADD("maincpu", ARM, 8000000)        /* 8 MHz */
 	MCFG_CPU_PROGRAM_MAP(a310_mem)
-	MCFG_CPU_CONFIG(a310_config)
+	MCFG_ARM_COPRO(ARM_COPRO_TYPE_VL86C020)
 
 	MCFG_DEVICE_ADD("kart", AAKART, 8000000/256)
 	MCFG_AAKART_OUT_TX_CB(WRITELINE(archimedes_state, a310_kart_tx_w))