diff --git a/src/mame/drivers/segas32.c b/src/mame/drivers/segas32.c
index 73fa882fe4d..129326a83d0 100644
--- a/src/mame/drivers/segas32.c
+++ b/src/mame/drivers/segas32.c
@@ -5286,6 +5286,8 @@ void segas32_state::init_orunners(void)
 	segas32_common_init(read16_delegate(FUNC(segas32_state::analog_custom_io_r),this), write16_delegate(FUNC(segas32_state::orunners_custom_io_w),this));
 	m_sw1_output = &segas32_state::orunners_sw1_output;
 	m_sw2_output = &segas32_state::orunners_sw2_output;
+
+	m_s32comm->set_linktype(15033); // EPR-15033
 }
 
 
@@ -5314,6 +5316,8 @@ void segas32_state::init_scross(void)
 
 	m_sw1_output = &segas32_state::scross_sw1_output;
 	m_sw2_output = &segas32_state::scross_sw2_output;
+
+	m_s32comm->set_linktype(15033); // EPR-15033
 }
 
 
diff --git a/src/mame/machine/s32comm.c b/src/mame/machine/s32comm.c
index 95abb5ed6cd..b3227875f57 100644
--- a/src/mame/machine/s32comm.c
+++ b/src/mame/machine/s32comm.c
@@ -177,14 +177,14 @@ void s32comm_device::set_linktype(UINT16 linktype)
 			// Rad Rally
 			printf("S32COMM: set mode 'EPR-14084 - Rad Rally'\n");
 			break;
+		case 15033:
+			// Stadium Cross / OutRunners
+			printf("S32COMM: set mode 'EPR-15033 - Stadium Cross / OutRunners'\n");
+			break;
 		case 15612:
 			// F1 Super Lap
 			printf("S32COMM: set mode 'EPR-15612 - F1 Super Lap'\n");
 			break;
-		case 3:
-			// OutRunners
-			printf("S32COMM: set mode 'EPR-????? - OutRunners'\n");
-			break;
 	}
 }
 
@@ -196,14 +196,14 @@ void s32comm_device::comm_tick()
 			// Rad Rally
 			comm_tick_14084();
 			break;
+		case 15033:
+			// Stadium Cross / OutRunners
+			comm_tick_15033();
+			break;
 		case 15612:
 			// F1 Super Lap
 			comm_tick_15612();
 			break;
-		case 3:
-			// OutRunners
-			comm_tick3();
-			break;
 	}
 }
 
@@ -449,248 +449,7 @@ void s32comm_device::comm_tick_14084()
 	}	
 }
 
-void s32comm_device::comm_tick_15612()
-{
-	if (m_linkenable == 0x01)	
-	{
-		int frameStart = 0x0010;
-		int frameOffset = 0x0000;
-		int frameSize = 0x00E0;
-		int dataSize = frameSize + 1;
-		int togo = 0;
-		int recv = 0;
-		int idx = 0;
-
-		bool isMaster = (m_shared[1] == 0x01);
-		bool isSlave = (m_shared[1] == 0x02);
-		bool isRelay = (m_shared[1] == 0x00);
-
-		// if link not yet established...
-		if (m_linkalive == 0x00)
-		{
-			// waiting...
-			m_shared[0] = 0x05;
-			
-			// check rx socket
-			if (!m_line_rx.is_open())
-			{
-				printf("S32COMM: listen on %s\n", m_localhost);
-				m_line_rx.open(m_localhost);
-			}
-			
-			// check tx socket
-			if (!m_line_tx.is_open())
-			{
-				printf("S32COMM: connect to %s\n", m_remotehost);
-				m_line_tx.open(m_remotehost);
-			}
-			
-			// if both sockets are there check ring
-			if ((m_line_rx.is_open()) && (m_line_tx.is_open()))
-			{
-				// try to read one messages
-				recv = m_line_rx.read(m_buffer, dataSize);
-				while (recv != 0)
-				{
-					// check if complete message
-					if (recv == dataSize)
-					{
-						// check if message id
-						idx = m_buffer[0];
-
-						// 0xFF - link id
-						if (idx == 0xFF)
-						{
-							if (isMaster)
-							{
-								// master gets first id and starts next state
-								m_linkid = 0x01;
-								m_linkcount = m_buffer[1];
-								m_linktimer = 0x01;
-							}
-							else if (isSlave || isRelay)
-							{
-								// slave gets own id
-								if (isSlave)
-								{
-									m_buffer[1]++;
-									m_linkid = m_buffer[1];
-								}
-
-								// slave and relay forward message
-								m_line_tx.write(m_buffer, dataSize);
-							}
-						}
-						
-						// 0xFE - link size
-						else if (idx == 0xFE)
-						{
-							if (isSlave || isRelay)
-							{
-								m_linkcount = m_buffer[1];
-
-								// slave and relay forward message
-								m_line_tx.write(m_buffer, dataSize);
-							}
-							
-							// consider it done
-							printf("S32COMM: link established - id %02x of %02x\n", m_linkid, m_linkcount);
-							m_linkalive = 0x01;
-							
-							// write to shared mem
-							m_shared[0] = 0x01;
-							m_shared[2] = m_linkid;
-							m_shared[3] = m_linkcount;
-						}
-					}
-					else
-					{
-						// got only part of a message - read the rest (and drop it)
-						// TODO: combine parts and push to "ring buffer"
-						togo = dataSize - recv;
-						while (togo > 0){
-							recv = m_line_rx.read(m_buffer, togo);
-							togo -= recv;
-						}
-						printf("S32COMM: droped a message...\n");
-					}
-					
-					if (m_linkalive == 0x00)
-						recv = m_line_rx.read(m_buffer, dataSize);
-					else
-						recv = 0;
-				}
-				
-				// if we are master and link is not yet established
-				if (isMaster && (m_linkalive == 0x00))
-				{
-					// send first packet
-					if (m_linktimer == 0x00)
-					{
-						m_buffer[0] = 0xFF;
-						m_buffer[1] = 0x01;
-						m_line_tx.write(m_buffer, dataSize);
-					}
-
-					// send second packet
-					else if (m_linktimer == 0x01)
-					{
-						m_buffer[0] = 0xFE;
-						m_buffer[1] = m_linkcount;
-						m_line_tx.write(m_buffer, dataSize);
-
-						// consider it done
-						printf("S32COMM: link established - id %02x of %02x\n", m_linkid, m_linkcount);
-						m_linkalive = 0x01;
-
-						// write to shared mem
-						m_shared[0] = 0x01;
-						m_shared[2] = m_linkid;
-						m_shared[3] = m_linkcount;
-					}
-					
-					else if (m_linktimer > 0x02)
-					{
-						// decrease delay timer
-						m_linktimer--;
-						if (m_linktimer == 0x02)
-							m_linktimer = 0x00;
-					}
-				}
-			}
-		}	
-
-		// update "ring buffer" if link established
-		if (m_linkalive == 0x01)
-		{
-			int togo = 0;
-			// try to read one messages
-			int recv = m_line_rx.read(m_buffer, dataSize);
-			while (recv != 0)
-			{
-				// check if complete message
-				if (recv == dataSize)
-				{
-					// check if valid id
-					int idx = m_buffer[0];
-					if (idx > 0 && idx <= m_linkcount) {
-						// if not our own message
-						if (idx != m_linkid)
-						{
-							// save message to "ring buffer"
-							frameOffset = frameStart + (idx * frameSize);
-							for (int j = 0x00 ; j < frameSize ; j++)
-							{
-								m_shared[frameOffset + j] = m_buffer[1 + j];
-							}
-
-							// forward message to other nodes
-							m_line_tx.write(m_buffer, dataSize);
-						}
-					} else {
-						if (!isMaster && idx == 0xF0){
-							// 0xF0 - master addional bytes
-							for (int j = 0x05 ; j < 0x10 ; j++)
-							{
-								m_shared[j] = m_buffer[1 + j];
-							}
-
-							// forward message to other nodes
-							m_line_tx.write(m_buffer, dataSize);
-						}
-					}
-				}
-				else
-				{
-					// got only part of a message - read the rest (and drop it)
-					// TODO: combine parts and push to "ring buffer"
-					togo = dataSize - recv;
-					while (togo > 0){
-						recv = m_line_rx.read(m_buffer, togo);
-						togo -= recv;
-					}
-					printf("S32COMM: droped a message...\n");
-				}
-				recv = m_line_rx.read(m_buffer, dataSize);
-			}
-			
-			// update "ring buffer" if link established
-			// live relay does not send data
-			if (m_linkid != 0x00 && m_shared[4] != 0x00)
-			{
-				m_buffer[0] = m_linkid;
-				frameOffset = frameStart + (m_linkid * frameSize);
-				for (int j = 0x00 ; j < frameSize ; j++)
-				{
-					// push message to "ring buffer"
-					m_shared[frameOffset + j] = m_shared[frameStart + j];
-					m_buffer[1 + j] = m_shared[frameStart + j];
-				}
-				// push message to other nodes
-				m_line_tx.write(m_buffer, dataSize);
-
-				// master sends some additional status bytes 
-				if (isMaster){
-					m_buffer[0] = 0xF0;
-					for (int j = 0x00 ; j < frameSize ; j++)
-					{
-						m_buffer[1 + j] = 0x00;
-					}
-					for (int j = 0x05 ; j < 0x10 ; j++)
-					{
-						m_buffer[1 + j] = m_shared[j];
-					}
-					// push message to other nodes
-					m_line_tx.write(m_buffer, dataSize);
-				}
-			}
-			// clear 04
-			m_shared[4] = 0x00;
-		}
-	}
-}
-
-void s32comm_device::comm_tick3()
+void s32comm_device::comm_tick_15033()
 {
 	if (m_linkenable == 0x01)	
 	{
@@ -941,4 +700,245 @@ void s32comm_device::comm_tick3()
 		}
 	}	
 }
+
+void s32comm_device::comm_tick_15612()
+{
+	if (m_linkenable == 0x01)	
+	{
+		int frameStart = 0x0010;
+		int frameOffset = 0x0000;
+		int frameSize = 0x00E0;
+		int dataSize = frameSize + 1;
+		int togo = 0;
+		int recv = 0;
+		int idx = 0;
+
+		bool isMaster = (m_shared[1] == 0x01);
+		bool isSlave = (m_shared[1] == 0x02);
+		bool isRelay = (m_shared[1] == 0x00);
+
+		// if link not yet established...
+		if (m_linkalive == 0x00)
+		{
+			// waiting...
+			m_shared[0] = 0x05;
+			
+			// check rx socket
+			if (!m_line_rx.is_open())
+			{
+				printf("S32COMM: listen on %s\n", m_localhost);
+				m_line_rx.open(m_localhost);
+			}
+			
+			// check tx socket
+			if (!m_line_tx.is_open())
+			{
+				printf("S32COMM: connect to %s\n", m_remotehost);
+				m_line_tx.open(m_remotehost);
+			}
+			
+			// if both sockets are there check ring
+			if ((m_line_rx.is_open()) && (m_line_tx.is_open()))
+			{
+				// try to read one messages
+				recv = m_line_rx.read(m_buffer, dataSize);
+				while (recv != 0)
+				{
+					// check if complete message
+					if (recv == dataSize)
+					{
+						// check if message id
+						idx = m_buffer[0];
+
+						// 0xFF - link id
+						if (idx == 0xFF)
+						{
+							if (isMaster)
+							{
+								// master gets first id and starts next state
+								m_linkid = 0x01;
+								m_linkcount = m_buffer[1];
+								m_linktimer = 0x01;
+							}
+							else if (isSlave || isRelay)
+							{
+								// slave gets own id
+								if (isSlave)
+								{
+									m_buffer[1]++;
+									m_linkid = m_buffer[1];
+								}
+
+								// slave and relay forward message
+								m_line_tx.write(m_buffer, dataSize);
+							}
+						}
+						
+						// 0xFE - link size
+						else if (idx == 0xFE)
+						{
+							if (isSlave || isRelay)
+							{
+								m_linkcount = m_buffer[1];
+
+								// slave and relay forward message
+								m_line_tx.write(m_buffer, dataSize);
+							}
+							
+							// consider it done
+							printf("S32COMM: link established - id %02x of %02x\n", m_linkid, m_linkcount);
+							m_linkalive = 0x01;
+							
+							// write to shared mem
+							m_shared[0] = 0x01;
+							m_shared[2] = m_linkid;
+							m_shared[3] = m_linkcount;
+						}
+					}
+					else
+					{
+						// got only part of a message - read the rest (and drop it)
+						// TODO: combine parts and push to "ring buffer"
+						togo = dataSize - recv;
+						while (togo > 0){
+							recv = m_line_rx.read(m_buffer, togo);
+							togo -= recv;
+						}
+						printf("S32COMM: droped a message...\n");
+					}
+					
+					if (m_linkalive == 0x00)
+						recv = m_line_rx.read(m_buffer, dataSize);
+					else
+						recv = 0;
+				}
+				
+				// if we are master and link is not yet established
+				if (isMaster && (m_linkalive == 0x00))
+				{
+					// send first packet
+					if (m_linktimer == 0x00)
+					{
+						m_buffer[0] = 0xFF;
+						m_buffer[1] = 0x01;
+						m_line_tx.write(m_buffer, dataSize);
+					}
+
+					// send second packet
+					else if (m_linktimer == 0x01)
+					{
+						m_buffer[0] = 0xFE;
+						m_buffer[1] = m_linkcount;
+						m_line_tx.write(m_buffer, dataSize);
+
+						// consider it done
+						printf("S32COMM: link established - id %02x of %02x\n", m_linkid, m_linkcount);
+						m_linkalive = 0x01;
+
+						// write to shared mem
+						m_shared[0] = 0x01;
+						m_shared[2] = m_linkid;
+						m_shared[3] = m_linkcount;
+					}
+					
+					else if (m_linktimer > 0x02)
+					{
+						// decrease delay timer
+						m_linktimer--;
+						if (m_linktimer == 0x02)
+							m_linktimer = 0x00;
+					}
+				}
+			}
+		}	
+
+		// update "ring buffer" if link established
+		if (m_linkalive == 0x01)
+		{
+			int togo = 0;
+			// try to read one messages
+			int recv = m_line_rx.read(m_buffer, dataSize);
+			while (recv != 0)
+			{
+				// check if complete message
+				if (recv == dataSize)
+				{
+					// check if valid id
+					int idx = m_buffer[0];
+					if (idx > 0 && idx <= m_linkcount) {
+						// if not our own message
+						if (idx != m_linkid)
+						{
+							// save message to "ring buffer"
+							frameOffset = frameStart + (idx * frameSize);
+							for (int j = 0x00 ; j < frameSize ; j++)
+							{
+								m_shared[frameOffset + j] = m_buffer[1 + j];
+							}
+
+							// forward message to other nodes
+							m_line_tx.write(m_buffer, dataSize);
+						}
+					} else {
+						if (!isMaster && idx == 0xF0){
+							// 0xF0 - master addional bytes
+							for (int j = 0x05 ; j < 0x10 ; j++)
+							{
+								m_shared[j] = m_buffer[1 + j];
+							}
+
+							// forward message to other nodes
+							m_line_tx.write(m_buffer, dataSize);
+						}
+					}
+				}
+				else
+				{
+					// got only part of a message - read the rest (and drop it)
+					// TODO: combine parts and push to "ring buffer"
+					togo = dataSize - recv;
+					while (togo > 0){
+						recv = m_line_rx.read(m_buffer, togo);
+						togo -= recv;
+					}
+					printf("S32COMM: droped a message...\n");
+				}
+				recv = m_line_rx.read(m_buffer, dataSize);
+			}
+			
+			// update "ring buffer" if link established
+			// live relay does not send data
+			if (m_linkid != 0x00 && m_shared[4] != 0x00)
+			{
+				m_buffer[0] = m_linkid;
+				frameOffset = frameStart + (m_linkid * frameSize);
+				for (int j = 0x00 ; j < frameSize ; j++)
+				{
+					// push message to "ring buffer"
+					m_shared[frameOffset + j] = m_shared[frameStart + j];
+					m_buffer[1 + j] = m_shared[frameStart + j];
+				}
+				// push message to other nodes
+				m_line_tx.write(m_buffer, dataSize);
+
+				// master sends some additional status bytes 
+				if (isMaster){
+					m_buffer[0] = 0xF0;
+					for (int j = 0x00 ; j < frameSize ; j++)
+					{
+						m_buffer[1 + j] = 0x00;
+					}
+					for (int j = 0x05 ; j < 0x10 ; j++)
+					{
+						m_buffer[1 + j] = m_shared[j];
+					}
+					// push message to other nodes
+					m_line_tx.write(m_buffer, dataSize);
+				}
+			}
+			// clear 04
+			m_shared[4] = 0x00;
+		}
+	}
+}
 #endif
diff --git a/src/mame/machine/s32comm.h b/src/mame/machine/s32comm.h
index c349740d4ef..e76cba98862 100644
--- a/src/mame/machine/s32comm.h
+++ b/src/mame/machine/s32comm.h
@@ -80,8 +80,8 @@ private:
 	void comm_tick();
 	
 	void comm_tick_14084();
+	void comm_tick_15033();
 	void comm_tick_15612();
-	void comm_tick3();
 #endif
 };