diff --git a/bacnet-stack/ai.c b/bacnet-stack/ai.c
index 64f99da8..ffba84f8 100644
--- a/bacnet-stack/ai.c
+++ b/bacnet-stack/ai.c
@@ -67,6 +67,7 @@ int Analog_Input_Encode_Property_APDU(
   char text_string[32] = {""};
   float value = 3.14159;
   
+  (void)array_index;
   switch (property)
   {
     case PROP_OBJECT_IDENTIFIER:
diff --git a/bacnet-stack/apdu.c b/bacnet-stack/apdu.c
index cdeacaa3..e447c95c 100644
--- a/bacnet-stack/apdu.c
+++ b/bacnet-stack/apdu.c
@@ -157,6 +157,7 @@ void apdu_handler(
   uint16_t service_request_len = 0;
   uint16_t len = 0; // counts where we are in PDU
 
+  (void)data_expecting_reply;
   if (apdu)
   {
     // PDU Type
diff --git a/bacnet-stack/bacdcode.c b/bacnet-stack/bacdcode.c
index feed164f..073119fb 100644
--- a/bacnet-stack/bacdcode.c
+++ b/bacnet-stack/bacdcode.c
@@ -903,7 +903,8 @@ int encode_tagged_character_string(uint8_t * apdu, const char *char_string)
 int decode_character_string(uint8_t * apdu, uint32_t len_value,
     char *char_string, size_t string_len)
 {
-    int len = 0, i = 0;
+    int len = 0; // return value
+    uint32_t i = 0; // counter
 
     // FIXME: issue warning?
     if (len_value > string_len)
diff --git a/bacnet-stack/device.c b/bacnet-stack/device.c
index dfc379ee..9316c1fe 100644
--- a/bacnet-stack/device.c
+++ b/bacnet-stack/device.c
@@ -278,7 +278,7 @@ int Device_Encode_Property_APDU(
   int apdu_len = 0; // return value
   int len = 0; // apdu len intermediate value
   BACNET_BIT_STRING bit_string;
-  int i = 0;
+  unsigned i = 0;
   int object_type = 0;
   uint32_t instance = 0;
   unsigned count = 0;
diff --git a/bacnet-stack/ethernet.h b/bacnet-stack/ethernet.h
index b58ba00c..8f7c44bb 100644
--- a/bacnet-stack/ethernet.h
+++ b/bacnet-stack/ethernet.h
@@ -70,6 +70,7 @@ uint16_t ethernet_receive(
   uint16_t max_pdu,  // amount of space available in the PDU 
   unsigned timeout); // milliseconds to wait for a packet
 
+void ethernet_set_my_address(BACNET_ADDRESS *my_address);
 void ethernet_get_my_address(BACNET_ADDRESS *my_address);
 void ethernet_get_broadcast_address(
   BACNET_ADDRESS *dest);  // destination address
diff --git a/bacnet-stack/ports/linux/ethernet.c b/bacnet-stack/ports/linux/ethernet.c
index 2cc5ef59..1e6a0a5b 100644
--- a/bacnet-stack/ports/linux/ethernet.c
+++ b/bacnet-stack/ports/linux/ethernet.c
@@ -361,6 +361,18 @@ uint16_t ethernet_receive(
     return pdu_len;
 }
 
+void ethernet_set_my_address(BACNET_ADDRESS *my_address)
+{
+  int i = 0;
+  
+  for (i = 0; i < 6; i++)
+  {
+    Ethernet_MAC_Address[i] = my_address->mac[i];
+  }
+
+  return;
+}
+
 void ethernet_get_my_address(BACNET_ADDRESS *my_address)
 {
   int i = 0;
diff --git a/bacnet-stack/ports/rtos32/ethernet.c b/bacnet-stack/ports/rtos32/ethernet.c
index ea5a358e..668c99e9 100644
--- a/bacnet-stack/ports/rtos32/ethernet.c
+++ b/bacnet-stack/ports/rtos32/ethernet.c
@@ -43,116 +43,29 @@ uint8_t Ethernet_Empty_MAC[MAX_MAC_LEN] = { 0, 0, 0, 0, 0, 0 };
 // my local device data - MAC address
 uint8_t Ethernet_MAC_Address[MAX_MAC_LEN] = { 0, 0, 0, 0, 0, 0 };
 
-// static IP address assignment (default)
-static BYTE TargetIP[]       = {192, 168,   0,  50};
-// net mask - set to be subnet restrictive
-static BYTE NetMask[]        = {255, 255, 255,   0};
-// gateway - set to zero if not available or required
-static BYTE DefaultGateway[] = {0, 0,  0,  0};
-// DNS - set to zero if not available or required
-static BYTE DNSServer[]      = {0, 0,  0,  0};
-// the Interface for Ethernet
-// SOCKET_ERROR means no open interface
-static int Ethernet_Interface = SOCKET_ERROR;
 static SOCKET Ethernet_Socket = -1;
 // used for binding 802.2
 static struct sockaddr Ethernet_Address = { 0 };
 
 bool ethernet_valid(void)
 {
-  return (Ethernet_Interface != SOCKET_ERROR);
+  return (Ethernet_Socket != -1);
 }
 
 void ethernet_cleanup(void)
 {
   if (ethernet_valid())
-      xn_interface_close(Ethernet_Interface);
-  Ethernet_Interface = SOCKET_ERROR;
+      closesocket(Ethernet_Socket);
+  Ethernet_Socket = -1;
 
   return;    
 }
 
-/* function to find the local ethernet MAC address */
-static int get_local_hwaddr(int iface, unsigned char *mac)
-{
-    struct _iface_info ii; // contains the hwaddr of the Ethernet interface
-
-    /* determine the local MAC address */
-    xn_interface_info(iface, &ii);
-    mac[0] = ii.my_ethernet_address[0];
-    mac[1] = ii.my_ethernet_address[1];
-    mac[2] = ii.my_ethernet_address[2];
-    mac[3] = ii.my_ethernet_address[3];
-    mac[4] = ii.my_ethernet_address[4];
-    mac[5] = ii.my_ethernet_address[5];
-
-    return 0;
-}
-
-static void ethernet_error(const char *text)
-{
-   fprintf(stderr,"%s, error code: %s\n", 
-      text, xn_geterror_string(WSAGetLastError()));
-   exit(1);
-}
-
 bool ethernet_init(char *interface_name)
 {
-    struct _iface_info ii; // contains the hwaddr of the Ethernet interface
     int value = 1;  
-    int Result = 0;
     
-    // FIXME: what about other drivers other than DAVICOM?
     (void)interface_name;
-    RTKernelInit(0); // get the kernel going
-    if (!RTKDebugVersion())            // switch of all diagnostics and error messages of RTIP-32
-      xn_callbacks()->cb_wr_screen_string_fnc = NULL;
-    
-    CLKSetTimerIntVal(10*1000);        // 10 millisecond tick
-    RTKDelay(1);
-    RTCMOSSetSystemTime();             // get the right time-of-day
-
-    Result = xn_rtip_init();           // Initialize the RTIP stack
-    if (Result == SOCKET_ERROR)
-        ethernet_error("ethernet: xn_rtip_init failed");
-    atexit(ethernet_cleanup);                          // make sure the driver is shut down properly
-    RTCallDebugger(RT_DBG_CALLRESET, (DWORD)exit, 0);  // even if we get restarted by the debugger
-
-    // tell RTIP what Ethernet driver we want 
-    Result = xn_bind_davicom(MINOR_0);
-    if (Result != 0)
-      ethernet_error("ethernet: driver initialization failed");
-    // PCI device ignores the IRQ and IO parameters
-    Ethernet_Interface = xn_interface_open_config(
-      DAVICOM_DEVICE, MINOR_0, 0, 0, 0);
-    if (Ethernet_Interface == SOCKET_ERROR)
-    {
-      fprintf(stderr,"ethernet: Davicom driver failed to initialize\r\n");
-      return false;
-    }
-    if (xn_interface_opt(Ethernet_Interface,IO_802_2,
-      (const char *)&value,sizeof(value)))
-      fprintf(stderr,"ethernet: xn_interface_opt 802.2 failed \n"); 
-    xn_interface_info(Ethernet_Interface, &ii);
-    printf("ethernet: MAC address: %02x-%02x-%02x-%02x-%02x-%02x\n",
-       ii.my_ethernet_address[0], ii.my_ethernet_address[1],
-       ii.my_ethernet_address[2], ii.my_ethernet_address[3],
-       ii.my_ethernet_address[4], ii.my_ethernet_address[5]);
-    // Set the IP address and interface
-    printf("ethernet: static IP address %i.%i.%i.%i\n",
-      TargetIP[0], TargetIP[1], TargetIP[2], TargetIP[3]);
-    if (xn_set_ip(Ethernet_Interface, TargetIP, NetMask) == SOCKET_ERROR)
-    {
-      // FIXME: is this because of a duplicate address?  Tell user...
-      fprintf(stderr,"ethernet: failed to set IP address!\r\n");
-      return false;
-    }
-    // add a route in the routing table
-    // ip_ffaddr is apparently some global...
-    xn_rt_add(RT_DEFAULT, ip_ffaddr, DefaultGateway, 1,
-      Ethernet_Interface, RT_INF);
-    xn_set_server_list((DWORD*)DNSServer, 1);
-
     // setup the socket
     Ethernet_Socket = socket(AF_INET, SOCK_RAW, 0);
     if (Ethernet_Socket < 0)
@@ -168,14 +81,13 @@ bool ethernet_init(char *interface_name)
 }
 
 /* function to send a packet out the 802.2 socket */
-/* returns 0 on success, non-zero on failure */
+/* returns bytes sent on success, negative number on failure */
 int ethernet_send(
   BACNET_ADDRESS *dest,  // destination address
   BACNET_ADDRESS *src,  // source address
   uint8_t *pdu, // any data to be sent - may be null
   unsigned pdu_len) // number of bytes of data
 {
-    int status = -1;
     int bytes = 0;
     uint8_t mtu[MAX_MPDU] = { 0 };
     int mtu_len = 0;
@@ -185,7 +97,7 @@ int ethernet_send(
     if (Ethernet_Socket < 0)
     {
         fprintf(stderr, "ethernet: 802.2 socket is invalid!\n");
-        return status;
+        return -1;
     }
     /* load destination ethernet MAC address */
     if (dest->mac_len == 6)
@@ -199,7 +111,7 @@ int ethernet_send(
     else
     {
         fprintf(stderr, "ethernet: invalid destination MAC address!\n");
-        return status;
+        return -2;
     }
 
     /* load source ethernet MAC address */
@@ -214,12 +126,12 @@ int ethernet_send(
     else
     {
         fprintf(stderr, "ethernet: invalid source MAC address!\n");
-        return status;
+        return -3;
     }
     if ((14 + 3 + pdu_len) > MAX_MPDU)
     {
         fprintf(stderr, "ethernet: PDU is too big to send!\n");
-        return status;
+        return -4;
     }
     /* packet length */
     mtu_len += encode_unsigned16(&mtu[12], 
@@ -236,20 +148,15 @@ int ethernet_send(
         sendto(Ethernet_Socket, (const char *)&mtu, mtu_len, 0,
             &Ethernet_Address, sizeof(Ethernet_Address));
     /* did it get sent? */
-    if (bytes < 0) {            
+    if (bytes < 0)
       fprintf(stderr,"ethernet: Error sending packet: %s\n", 
         strerror(errno));
-      return status;
-    }
     
-    // got this far - must be good!
-    status = 0;
-
-    return status;
+    return bytes;
 }
 
 /* function to send a packet out the 802.2 socket */
-/* returns zero on success, non-zero on failure */
+/* returns bytes sent on success, negative number on failure */
 int ethernet_send_pdu(
   BACNET_ADDRESS *dest,  // destination address
   uint8_t *pdu, // any data to be sent - may be null
@@ -374,7 +281,19 @@ void ethernet_get_my_address(BACNET_ADDRESS *my_address)
   return;
 }
 
-void ethernet_set_broadcast_address(
+void ethernet_set_my_address(BACNET_ADDRESS *my_address)
+{
+  int i = 0;
+  
+  for (i = 0; i < 6; i++)
+  {
+    Ethernet_MAC_Address[i] = my_address->mac[i];
+  }
+
+  return;
+}
+
+void ethernet_get_broadcast_address(
   BACNET_ADDRESS *dest)  // destination address
 {
   int i = 0; // counter
@@ -427,4 +346,3 @@ void ethernet_debug_address(
 
   return;
 }
-
diff --git a/bacnet-stack/ports/rtos32/main.c b/bacnet-stack/ports/rtos32/main.c
index dd55b299..671ac694 100644
--- a/bacnet-stack/ports/rtos32/main.c
+++ b/bacnet-stack/ports/rtos32/main.c
@@ -25,31 +25,6 @@
 
 // This is one way to use the embedded BACnet stack under RTOS-32 
 // compiled with Borland C++ 5.02
-#define WIN32_LEAN_AND_MEAN
-#define STRICT
-
-#include <windows.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <process.h>
-
-#ifndef HOST
-
-   #include <rttarget.h>
-   #include <rtk32.h>
-   #include <clock.h>
-   #include <socket.h>
-
-   #include "netcfg.h"
-
-   int interface = SOCKET_ERROR;  // SOCKET_ERROR means no open interface
-
-#else
-
-   #include <winsock.h>
-
-#endif
-
 #include <stddef.h>
 #include <stdint.h>
 #include <stdio.h>
@@ -59,7 +34,20 @@
 #include "apdu.h"
 #include "device.h"
 #include "handlers.h"
-#include "bip.h"
+#ifdef BACDL_ETHERNET
+  #include "ethernet.h"
+  #define bacdl_receive ethernet_receive
+#endif
+#ifdef BACDL_BIP
+  #include "bip.h"
+  #define bacdl_receive bip_receive
+#endif
+#include "net.h"
+#ifndef HOST
+   #include "netcfg.h"
+#endif
+
+static int interface = SOCKET_ERROR;  // SOCKET_ERROR means no open interface
 
 // buffers used for transmit and receive
 static uint8_t Rx_Buf[MAX_MPDU] = {0};
@@ -179,10 +167,21 @@ static void NetInitialize(void)
    else
    {
       struct _iface_info ii;
+      #ifdef BACDL_ETHERNET
+      BACNET_ADDRESS my_address;
+      unsigned i;
+      #endif
       xn_interface_info(interface, &ii);
       printf("Interface opened, MAC address: %02x-%02x-%02x-%02x-%02x-%02x\n",
          ii.my_ethernet_address[0], ii.my_ethernet_address[1], ii.my_ethernet_address[2],
          ii.my_ethernet_address[3], ii.my_ethernet_address[4], ii.my_ethernet_address[5]);
+      #ifdef BACDL_ETHERNET
+      for (i = 0; i < 6; i++)
+      {
+         my_address.mac[i] = ii.my_ethernet_address[i];
+      }
+      ethernet_set_my_address(&my_address);
+      #endif
    }
 
 #if DEVICE_ID == PRISM_PCMCIA_DEVICE || DEVICE_ID == PRISM_DEVICE
@@ -255,9 +254,16 @@ int main(int argc, char *argv[])
   Init_Service_Handlers();
   // init the physical layer
   NetInitialize();
+  #ifdef BACDL_BIP
   bip_set_address(TargetIP[0], TargetIP[1], TargetIP[2], TargetIP[3]);
   if (!bip_init())
     return 1;
+  #endif
+  #ifdef BACDL_ETHERNET
+  if (!ethernet_init(NULL))
+    return 1;
+  #endif
+
   
   // loop forever
   for (;;)
@@ -265,7 +271,7 @@ int main(int argc, char *argv[])
     // input
 
     // returns 0 bytes on timeout
-    pdu_len = bip_receive(
+    pdu_len = bacdl_receive(
       &src,
       &Rx_Buf[0],
       MAX_MPDU,
diff --git a/bacnet-stack/ports/rtos32/makefile.mak b/bacnet-stack/ports/rtos32/makefile.mak
index 83303bf6..14b43073 100644
--- a/bacnet-stack/ports/rtos32/makefile.mak
+++ b/bacnet-stack/ports/rtos32/makefile.mak
@@ -21,7 +21,7 @@ PRODUCT = bacnet
 PRODUCT_RTB = $(PRODUCT).rtb
 PRODUCT_EXE = $(PRODUCT).exe
 
-SRCS = init.c main.c bip.c \
+SRCS = init.c main.c ethernet.c bip.c \
        ..\..\handlers.c  \
        ..\..\bacdcode.c \
        ..\..\bigend.c \
@@ -52,7 +52,8 @@ LOCATE = $(RTOS32_DIR)\bin\rtloc
 CC_DIR     = $(BORLAND_DIR)\BIN
 CC_INCLDIR = $(BORLAND_DIR)\include
 INCL_DIRS = -I$(BORLAND_DIR)\include;$(RTOS32_DIR)\include;../../;
-DEFINES = -DDOC;BACDL_BIP=1
+#DEFINES = -DDOC;BACDL_BIP=1
+DEFINES = -DDOC;BACDL_ETHERNET=1
 
 CFLAGS = $(INCL_DIRS) $(CS_FLAGS) $(DEFINES)
 
@@ -104,7 +105,7 @@ $(PRODUCT_RTB): bcc32.cfg hardware.cfg software.cfg $(PRODUCT_EXE)
 # need a temp response file (@&&) because command line is too long
 $(PRODUCT_EXE) : $(OBJS)
 	@echo Running Linker for $(PRODUCT_EXE)
-	$(LINK) -L$(LINKER_LIB) -m -c -s -v @&&| # temp response file, starts with |
+	$(LINK)	-L$(LINKER_LIB) -m -c -s -v @&&| # temp response file, starts with |
 	  $(BORLAND_DIR)\lib\c0x32.obj $**  # $** lists each dependency
 	$<
 	$*.map
@@ -135,12 +136,13 @@ install : $(PRODUCT)
 # cc generic rule
 #
 .c.obj:
-	@echo Compiling $@ from $<
-	$(CC) $(CFLAGS) -c -o$@ $<
+	$(CC) -o$@ $<
 
 # Compiler configuration file
 bcc32.cfg :
    Copy &&|
+$(CFLAGS) 
+-c 
 -y     #include line numbers in OBJ's
 -v     #include debug info
 -w+    #turn on all warnings
diff --git a/bacnet-stack/ports/rtos32/net.h b/bacnet-stack/ports/rtos32/net.h
index 2ddd5f3b..9cac207a 100644
--- a/bacnet-stack/ports/rtos32/net.h
+++ b/bacnet-stack/ports/rtos32/net.h
@@ -25,7 +25,27 @@
 #ifndef NET_H
 #define NET_H
 
-#include <socket.h>
+#define WIN32_LEAN_AND_MEAN
+#define STRICT
+
+#include <windows.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <process.h>
+
+#ifndef HOST
+
+   #include <rttarget.h>
+   #include <rtk32.h>
+   #include <clock.h>
+   #include <socket.h>
+
+#else
+
+   #include <winsock.h>
+
+#endif
+
 #define close closesocket
 
 #endif
\ No newline at end of file
diff --git a/bacnet-stack/rp.c b/bacnet-stack/rp.c
index 87685125..3fd69dfe 100644
--- a/bacnet-stack/rp.c
+++ b/bacnet-stack/rp.c
@@ -84,7 +84,7 @@ int rp_decode_service_request(
   BACNET_PROPERTY_ID *object_property,
   int32_t *array_index)
 {
-  int len = 0;
+  unsigned len = 0;
   uint8_t tag_number = 0;
   uint32_t len_value_type = 0;
   int type = 0; // for decoding
@@ -125,7 +125,7 @@ int rp_decode_service_request(
       *array_index = BACNET_ARRAY_ALL;
   }
 
-  return len;
+  return (int)len;
 }
 
 int rp_decode_apdu(
@@ -138,7 +138,7 @@ int rp_decode_apdu(
   int32_t *array_index)
 {
   int len = 0;
-  int offset = 0;
+  unsigned offset = 0;
 
   if (!apdu)
     return -1;
diff --git a/bacnet-stack/whois.c b/bacnet-stack/whois.c
index c333a46d..5a18fa26 100644
--- a/bacnet-stack/whois.c
+++ b/bacnet-stack/whois.c
@@ -88,7 +88,7 @@ int whois_decode_service_request(
     if (tag_number != 0)
       return -1;
     len += decode_unsigned(&apdu[len], len_value, &decoded_value);
-    if ((decoded_value >= 0) && (decoded_value <= BACNET_MAX_INSTANCE))
+    if (decoded_value <= BACNET_MAX_INSTANCE)
     {
       if (pLow_limit)
         *pLow_limit = decoded_value;
@@ -98,7 +98,7 @@ int whois_decode_service_request(
       return -1;
     len += decode_unsigned(&apdu[len],
       len_value, &decoded_value);
-    if ((decoded_value >= 0) && (decoded_value <= BACNET_MAX_INSTANCE))
+    if (decoded_value <= BACNET_MAX_INSTANCE)
     {
       if (pHigh_limit)
         *pHigh_limit = decoded_value;
diff --git a/bacnet-stack/wp.c b/bacnet-stack/wp.c
index c684cff2..1993b510 100644
--- a/bacnet-stack/wp.c
+++ b/bacnet-stack/wp.c
@@ -147,7 +147,7 @@ int wp_decode_apdu(
   BACNET_WRITE_PROPERTY_DATA *data)
 {
   int len = 0;
-  int offset = 0;
+  unsigned offset = 0;
 
   if (!apdu)
     return -1;