diff --git a/Ethernet/Dhcp.cpp b/Dhcp.cpp
similarity index 100%
rename from Ethernet/Dhcp.cpp
rename to Dhcp.cpp
diff --git a/Ethernet/Dhcp.h b/Dhcp.h
similarity index 100%
rename from Ethernet/Dhcp.h
rename to Dhcp.h
diff --git a/Ethernet/Dns.cpp b/Dns.cpp
similarity index 100%
rename from Ethernet/Dns.cpp
rename to Dns.cpp
diff --git a/Ethernet/Dns.h b/Dns.h
similarity index 100%
rename from Ethernet/Dns.h
rename to Dns.h
diff --git a/Ethernet/Ethernet.cpp b/Ethernet.cpp
similarity index 99%
rename from Ethernet/Ethernet.cpp
rename to Ethernet.cpp
index f5582dc..b69e9c8 100644
--- a/Ethernet/Ethernet.cpp
+++ b/Ethernet.cpp
@@ -15,7 +15,9 @@ uint16_t EthernetClass::_server_port[MAX_SOCK_NUM] = { 0, };
 int EthernetClass::begin(void)
 {
   byte mac_address[6] ={0,};
-  _dhcp = new DhcpClass();
+
+  if(_dhcp == NULL)
+    _dhcp = new DhcpClass();
 
   // Initialise the basic info
   W5100.init();
diff --git a/Ethernet/Ethernet.h b/Ethernet.h
similarity index 98%
rename from Ethernet/Ethernet.h
rename to Ethernet.h
index a115ee6..9dba31f 100644
--- a/Ethernet/Ethernet.h
+++ b/Ethernet.h
@@ -19,6 +19,8 @@ class EthernetClass {
   IPAddress _dnsServerAddress;
   DhcpClass* _dhcp;
 public:
+  EthernetClass() : _dhcp(NULL) {}
+
   static uint8_t _state[MAX_SOCK_NUM];
   static uint16_t _server_port[MAX_SOCK_NUM];
 
diff --git a/Ethernet/EthernetClient.cpp b/EthernetClient.cpp
similarity index 100%
rename from Ethernet/EthernetClient.cpp
rename to EthernetClient.cpp
diff --git a/Ethernet/EthernetClient.h b/EthernetClient.h
similarity index 100%
rename from Ethernet/EthernetClient.h
rename to EthernetClient.h
diff --git a/Ethernet/EthernetServer.cpp b/EthernetServer.cpp
similarity index 100%
rename from Ethernet/EthernetServer.cpp
rename to EthernetServer.cpp
diff --git a/Ethernet/EthernetServer.h b/EthernetServer.h
similarity index 100%
rename from Ethernet/EthernetServer.h
rename to EthernetServer.h
diff --git a/Ethernet/EthernetUdp.cpp b/EthernetUdp.cpp
similarity index 97%
rename from Ethernet/EthernetUdp.cpp
rename to EthernetUdp.cpp
index 3760052..6e35fa7 100644
--- a/Ethernet/EthernetUdp.cpp
+++ b/EthernetUdp.cpp
@@ -120,8 +120,6 @@ int EthernetUDP::parsePacket()
   // discard any remaining bytes in the last packet
   flush();
 
-  if (W5100.getRXReceivedSize(_sock) > 0)
-  {
     //HACK - hand-parse the UDP packet using TCP recv method
     uint8_t tmpBuf[8];
     int ret =0; 
@@ -139,9 +137,6 @@ int EthernetUDP::parsePacket()
       ret = _remaining;
     }
     return ret;
-  }
-  // There aren't any packets available
-  return 0;
 }
 
 int EthernetUDP::read()
@@ -210,9 +205,9 @@ void EthernetUDP::flush()
   // should only occur if recv fails after telling us the data is there, lets
   // hope the w5100 always behaves :)
 
-  while (_remaining)
+  if (_remaining)
   {
-    read();
+    W5100.skip(_sock, _remaining);
   }
 }
 
diff --git a/Ethernet/EthernetUdp.h b/EthernetUdp.h
similarity index 100%
rename from Ethernet/EthernetUdp.h
rename to EthernetUdp.h
diff --git a/Ethernet/Twitter.cpp b/Twitter.cpp
similarity index 100%
rename from Ethernet/Twitter.cpp
rename to Twitter.cpp
diff --git a/Ethernet/Twitter.h b/Twitter.h
similarity index 100%
rename from Ethernet/Twitter.h
rename to Twitter.h
diff --git a/Ethernet/examples/BarometricPressureWebServer/BarometricPressureWebServer.ino b/examples/BarometricPressureWebServer/BarometricPressureWebServer.ino
similarity index 100%
rename from Ethernet/examples/BarometricPressureWebServer/BarometricPressureWebServer.ino
rename to examples/BarometricPressureWebServer/BarometricPressureWebServer.ino
diff --git a/Ethernet/examples/ChatServer/ChatServer.ino b/examples/ChatServer/ChatServer.ino
similarity index 100%
rename from Ethernet/examples/ChatServer/ChatServer.ino
rename to examples/ChatServer/ChatServer.ino
diff --git a/Ethernet/examples/DhcpAddressPrinter/DhcpAddressPrinter.ino b/examples/DhcpAddressPrinter/DhcpAddressPrinter.ino
similarity index 100%
rename from Ethernet/examples/DhcpAddressPrinter/DhcpAddressPrinter.ino
rename to examples/DhcpAddressPrinter/DhcpAddressPrinter.ino
diff --git a/Ethernet/examples/DhcpChatServer/DhcpChatServer.ino b/examples/DhcpChatServer/DhcpChatServer.ino
similarity index 100%
rename from Ethernet/examples/DhcpChatServer/DhcpChatServer.ino
rename to examples/DhcpChatServer/DhcpChatServer.ino
diff --git a/Ethernet/examples/TelnetClient/TelnetClient.ino b/examples/TelnetClient/TelnetClient.ino
similarity index 100%
rename from Ethernet/examples/TelnetClient/TelnetClient.ino
rename to examples/TelnetClient/TelnetClient.ino
diff --git a/Ethernet/examples/Twitter_Serial_GW/Twitter_Serial_GW.ino b/examples/Twitter_Serial_GW/Twitter_Serial_GW.ino
similarity index 100%
rename from Ethernet/examples/Twitter_Serial_GW/Twitter_Serial_GW.ino
rename to examples/Twitter_Serial_GW/Twitter_Serial_GW.ino
diff --git a/Ethernet/examples/Twitter_SimplePost/Twitter_SimplePost.ino b/examples/Twitter_SimplePost/Twitter_SimplePost.ino
similarity index 100%
rename from Ethernet/examples/Twitter_SimplePost/Twitter_SimplePost.ino
rename to examples/Twitter_SimplePost/Twitter_SimplePost.ino
diff --git a/Ethernet/examples/UDPSendReceiveString/UDPSendReceiveString.ino b/examples/UDPSendReceiveString/UDPSendReceiveString.ino
similarity index 100%
rename from Ethernet/examples/UDPSendReceiveString/UDPSendReceiveString.ino
rename to examples/UDPSendReceiveString/UDPSendReceiveString.ino
diff --git a/Ethernet/examples/UdpNtpClient/UdpNtpClient.ino b/examples/UdpNtpClient/UdpNtpClient.ino
similarity index 100%
rename from Ethernet/examples/UdpNtpClient/UdpNtpClient.ino
rename to examples/UdpNtpClient/UdpNtpClient.ino
diff --git a/Ethernet/examples/WebClient/WebClient.ino b/examples/WebClient/WebClient.ino
similarity index 100%
rename from Ethernet/examples/WebClient/WebClient.ino
rename to examples/WebClient/WebClient.ino
diff --git a/Ethernet/examples/WebClientRepeating/WebClientRepeating.ino b/examples/WebClientRepeating/WebClientRepeating.ino
similarity index 100%
rename from Ethernet/examples/WebClientRepeating/WebClientRepeating.ino
rename to examples/WebClientRepeating/WebClientRepeating.ino
diff --git a/Ethernet/examples/WebServer/WebServer.ino b/examples/WebServer/WebServer.ino
similarity index 100%
rename from Ethernet/examples/WebServer/WebServer.ino
rename to examples/WebServer/WebServer.ino
diff --git a/Ethernet/examples/XivelyClient/XivelyClient.ino b/examples/XivelyClient/XivelyClient.ino
similarity index 100%
rename from Ethernet/examples/XivelyClient/XivelyClient.ino
rename to examples/XivelyClient/XivelyClient.ino
diff --git a/Ethernet/examples/XivelyClientString/XivelyClientString.ino b/examples/XivelyClientString/XivelyClientString.ino
similarity index 100%
rename from Ethernet/examples/XivelyClientString/XivelyClientString.ino
rename to examples/XivelyClientString/XivelyClientString.ino
diff --git a/keywords.txt b/keywords.txt
new file mode 100644
index 0000000..a115ca9
--- /dev/null
+++ b/keywords.txt
@@ -0,0 +1,42 @@
+#######################################
+# Syntax Coloring Map For Ethernet
+#######################################
+
+#######################################
+# Datatypes (KEYWORD1)
+#######################################
+
+Ethernet	KEYWORD1
+EthernetClient	KEYWORD1
+EthernetServer	KEYWORD1
+IPAddress	KEYWORD1
+
+#######################################
+# Methods and Functions (KEYWORD2)
+#######################################
+
+status	KEYWORD2
+connect	KEYWORD2
+write	KEYWORD2
+available	KEYWORD2
+read	KEYWORD2
+peek	KEYWORD2
+flush	KEYWORD2
+stop	KEYWORD2
+connected	KEYWORD2
+begin	KEYWORD2
+beginPacket	KEYWORD2
+endPacket	KEYWORD2
+parsePacket	KEYWORD2
+remoteIP	KEYWORD2
+remotePort	KEYWORD2
+setRXMemorySizes	KEYWORD2
+setTXMemorySizes	KEYWORD2
+
+#######################################
+# Constants (LITERAL1)
+#######################################
+
+W5100_ETHERNET_SHIELD	LITERAL1
+W5200_ETHERNET_SHIELD	LITERAL1
+W5500_ETHERNET_SHIELD	LITERAL1
diff --git a/Ethernet/util.h b/util.h
similarity index 100%
rename from Ethernet/util.h
rename to util.h
diff --git a/Ethernet/utility/socket.cpp b/utility/socket.cpp
similarity index 97%
rename from Ethernet/utility/socket.cpp
rename to utility/socket.cpp
index fd3e442..971c4bd 100644
--- a/Ethernet/utility/socket.cpp
+++ b/utility/socket.cpp
@@ -99,8 +99,8 @@ uint16_t send(SOCKET s, const uint8_t * buf, uint16_t len)
   uint16_t ret=0;
   uint16_t freesize=0;
 
-  if (len > W5100.SSIZE) 
-    ret = W5100.SSIZE; // check size not to exceed MAX size.
+  if (len > W5100.SSIZE[s]) 
+    ret = W5100.SSIZE[s]; // check size not to exceed MAX size.
   else 
     ret = len;
 
@@ -199,7 +199,7 @@ uint16_t sendto(SOCKET s, const uint8_t *buf, uint16_t len, uint8_t *addr, uint1
 {
   uint16_t ret=0;
 
-  if (len > W5100.SSIZE) ret = W5100.SSIZE; // check size not to exceed MAX size.
+  if (len > W5100.SSIZE[s]) ret = W5100.SSIZE[s]; // check size not to exceed MAX size.
   else ret = len;
 
   if
@@ -316,8 +316,8 @@ uint16_t igmpsend(SOCKET s, const uint8_t * buf, uint16_t len)
   uint8_t status=0;
   uint16_t ret=0;
 
-  if (len > W5100.SSIZE) 
-    ret = W5100.SSIZE; // check size not to exceed MAX size.
+  if (len > W5100.SSIZE[s]) 
+    ret = W5100.SSIZE[s]; // check size not to exceed MAX size.
   else 
     ret = len;
 
diff --git a/Ethernet/utility/socket.h b/utility/socket.h
similarity index 100%
rename from Ethernet/utility/socket.h
rename to utility/socket.h
diff --git a/Ethernet/utility/w5100.cpp b/utility/w5100.cpp
similarity index 73%
rename from Ethernet/utility/w5100.cpp
rename to utility/w5100.cpp
index 679504e..21d0984 100644
--- a/Ethernet/utility/w5100.cpp
+++ b/utility/w5100.cpp
@@ -34,12 +34,49 @@ void W5100Class::init(void)
   initSS();
   
   writeMR(1<<RST);
-  writeTMSR(0x55);
-  writeRMSR(0x55);
+  
+  uint16_t sizes[MAX_SOCK_NUM] = {2048,2048,2048,2048};
+  setTXMemorySizes(sizes);
+  setRXMemorySizes(sizes);
+}
+
+void W5100Class::setTXMemorySizes(uint16_t * sizes)
+{
+  uint8_t msr = 0;
+  for (int i=0; i<MAX_SOCK_NUM; i++) {
+    SSIZE[i] = sizes[i];
+    uint16_t size = sizes[i] >> 10;
+    uint8_t log2 = 0;
+    while (size >>= 1) ++log2;
+    msr |= log2 << (i * 2);
+  }
+  writeTMSR(msr);
+  
+  SMASK[0] = SSIZE[0] - 1;
+  SBASE[0] = TXBUF_BASE;
+  for (int i=1; i<MAX_SOCK_NUM; i++) {
+	SMASK[i] = SSIZE[i] - 1;
+    SBASE[i] = SBASE[i-1] + SSIZE[i];
+  }
+}
 
+void W5100Class::setRXMemorySizes(uint16_t * sizes)
+{
+  uint8_t msr = 0;
   for (int i=0; i<MAX_SOCK_NUM; i++) {
-    SBASE[i] = TXBUF_BASE + SSIZE * i;
-    RBASE[i] = RXBUF_BASE + RSIZE * i;
+    RSIZE[i] = sizes[i];
+    uint16_t size = sizes[i] >> 10;
+    uint8_t log2 = 0;
+    while (size >>= 1) ++log2;
+    msr |= log2 << (i * 2);
+  }
+  writeRMSR(msr);
+
+  RMASK[0] = RSIZE[0] - 1;
+  RBASE[0] = RXBUF_BASE;
+  for (int i=1; i<MAX_SOCK_NUM; i++) {
+    RMASK[i] = RSIZE[i] - 1;
+    RBASE[i] = RBASE[i-1] + RSIZE[i];
   }
 }
 
@@ -78,13 +115,13 @@ void W5100Class::send_data_processing_offset(SOCKET s, uint16_t data_offset, con
 {
   uint16_t ptr = readSnTX_WR(s);
   ptr += data_offset;
-  uint16_t offset = ptr & SMASK;
+  uint16_t offset = ptr & SMASK[s];
   uint16_t dstAddr = offset + SBASE[s];
 
-  if (offset + len > SSIZE) 
+  if (offset + len > SSIZE[s]) 
   {
     // Wrap around circular buffer
-    uint16_t size = SSIZE - offset;
+    uint16_t size = SSIZE[s] - offset;
     write(dstAddr, data, size);
     write(SBASE[s], data + size, len - size);
   } 
@@ -109,18 +146,26 @@ void W5100Class::recv_data_processing(SOCKET s, uint8_t *data, uint16_t len, uin
   }
 }
 
+void W5100Class::skip(SOCKET s, uint16_t len)
+{
+  uint16_t ptr;
+  ptr = readSnRX_RD(s);
+  ptr += len;
+  writeSnRX_RD(s, ptr);
+}
+
 void W5100Class::read_data(SOCKET s, volatile uint8_t *src, volatile uint8_t *dst, uint16_t len)
 {
   uint16_t size;
   uint16_t src_mask;
   uint16_t src_ptr;
 
-  src_mask = (uint16_t)src & RMASK;
+  src_mask = (uint16_t)src & RMASK[s];
   src_ptr = RBASE[s] + src_mask;
 
-  if( (src_mask + len) > RSIZE ) 
+  if( (src_mask + len) > RSIZE[s] ) 
   {
-    size = RSIZE - src_mask;
+    size = RSIZE[s] - src_mask;
     read(src_ptr, (uint8_t *)dst, size);
     dst += size;
     read(RBASE[s], (uint8_t *) dst, len - size);
diff --git a/Ethernet/utility/w5100.h b/utility/w5100.h
similarity index 96%
rename from Ethernet/utility/w5100.h
rename to utility/w5100.h
index 3bfb1aa..44e99e0 100644
--- a/Ethernet/utility/w5100.h
+++ b/utility/w5100.h
@@ -16,8 +16,8 @@
 typedef uint8_t SOCKET;
 
 //#define W5100_ETHERNET_SHIELD // Arduino Ethenret Shield and Compatibles ...
-//#define W5200_ETHERNET_SHIELD // WIZ820io, W5200 Ethernet Shield 
-#define W5500_ETHERNET_SHIELD   // WIZ550io, ioShield series of WIZnet
+#define W5200_ETHERNET_SHIELD // WIZ820io, W5200 Ethernet Shield 
+//#define W5500_ETHERNET_SHIELD   // WIZ550io, ioShield series of WIZnet
 
 #if defined(W5500_ETHERNET_SHIELD)
 #define WIZ550io_WITH_MACADDRESS // Use assigned MAC address of WIZ550io
@@ -183,6 +183,13 @@ class W5100Class {
    */
   void recv_data_processing(SOCKET s, uint8_t *data, uint16_t len, uint8_t peek = 0);
 
+  /**
+   * @brief Moves the Rx read pointer forward
+   *
+   * This function allows you to skip a number of bytes in the Rx pointer register.
+   */
+  void skip(SOCKET s, uint16_t len);
+
   inline void setGatewayIp(uint8_t *_addr);
   inline void getGatewayIp(uint8_t *_addr);
 
@@ -203,6 +210,8 @@ class W5100Class {
   uint16_t getTXFreeSize(SOCKET s);
   uint16_t getRXReceivedSize(SOCKET s);
   
+  void setTXMemorySizes(uint16_t * sizes);
+  void setRXMemorySizes(uint16_t * sizes);
 
   // W5100 Registers
   // ---------------
@@ -327,12 +336,12 @@ class W5100Class {
   static const uint8_t  RST = 7; // Reset BIT
 
   static const int SOCKETS = 4;
-  static const uint16_t SMASK = 0x07FF; // Tx buffer MASK
-  static const uint16_t RMASK = 0x07FF; // Rx buffer MASK
+  uint16_t SMASK[SOCKETS]; // Tx buffer MASK
+  uint16_t RMASK[SOCKETS]; // Rx buffer MASK
 public:
-  static const uint16_t SSIZE = 2048; // Max Tx buffer size
+  uint16_t SSIZE[SOCKETS]; // Max Tx buffer size
 private:
-  static const uint16_t RSIZE = 2048; // Max Rx buffer size
+  uint16_t RSIZE[SOCKETS]; // Max Rx buffer size
   uint16_t SBASE[SOCKETS]; // Tx buffer base address
   uint16_t RBASE[SOCKETS]; // Rx buffer base address
 
diff --git a/Ethernet/utility/w5200.cpp b/utility/w5200.cpp
similarity index 77%
rename from Ethernet/utility/w5200.cpp
rename to utility/w5200.cpp
index 5e2aa8a..8fbfe71 100644
--- a/Ethernet/utility/w5200.cpp
+++ b/utility/w5200.cpp
@@ -33,13 +33,36 @@ void W5200Class::init(void)
   
   writeMR(1<<RST);
   
+  uint16_t sizes[MAX_SOCK_NUM] = {2048,2048,2048,2048,2048,2048,2048,2048};
+  setTXMemorySizes(sizes);
+  setRXMemorySizes(sizes);
+}
+
+void W5200Class::setTXMemorySizes(uint16_t * sizes)
+{
   for (int i=0; i<MAX_SOCK_NUM; i++) {
-    write((0x4000 + i * 0x100 + 0x001F), 2);
-    write((0x4000 + i * 0x100 + 0x001E), 2);
+    SSIZE[i] = sizes[i];
+    write((0x4000 + i * 0x100 + 0x001F), SSIZE[i] >> 10);
+  }
+  SMASK[0] = SSIZE[0] - 1;
+  SBASE[0] = TXBUF_BASE;
+  for (int i=1; i<MAX_SOCK_NUM; i++) {
+	SMASK[i] = SSIZE[i] - 1;
+    SBASE[i] = SBASE[i-1] + SSIZE[i];
   }
+}
+
+void W5200Class::setRXMemorySizes(uint16_t * sizes)
+{
   for (int i=0; i<MAX_SOCK_NUM; i++) {
-    SBASE[i] = TXBUF_BASE + SSIZE * i;
-    RBASE[i] = RXBUF_BASE + RSIZE * i;
+    RSIZE[i] = sizes[i];
+    write((0x4000 + i * 0x100 + 0x001E), RSIZE[i] >> 10);
+  }
+  RMASK[0] = RSIZE[0] - 1;
+  RBASE[0] = RXBUF_BASE;
+  for (int i=1; i<MAX_SOCK_NUM; i++) {
+    RMASK[i] = RSIZE[i] - 1;
+    RBASE[i] = RBASE[i-1] + RSIZE[i];
   }
 }
 
@@ -78,13 +101,13 @@ void W5200Class::send_data_processing_offset(SOCKET s, uint16_t data_offset, con
 {
   uint16_t ptr = readSnTX_WR(s);
   ptr += data_offset;
-  uint16_t offset = ptr & SMASK;
+  uint16_t offset = ptr & SMASK[s];
   uint16_t dstAddr = offset + SBASE[s];
 
-  if (offset + len > SSIZE) 
+  if (offset + len > SSIZE[s]) 
   {
     // Wrap around circular buffer
-    uint16_t size = SSIZE - offset;
+    uint16_t size = SSIZE[s] - offset;
     write(dstAddr, data, size);
     write(SBASE[s], data + size, len - size);
   } 
@@ -109,18 +132,26 @@ void W5200Class::recv_data_processing(SOCKET s, uint8_t *data, uint16_t len, uin
   }
 }
 
+void W5200Class::skip(SOCKET s, uint16_t len)
+{
+  uint16_t ptr;
+  ptr = readSnRX_RD(s);
+  ptr += len;
+  writeSnRX_RD(s, ptr);
+}
+
 void W5200Class::read_data(SOCKET s, volatile uint8_t *src, volatile uint8_t *dst, uint16_t len)
 {
   uint16_t size;
   uint16_t src_mask;
   uint16_t src_ptr;
 
-  src_mask = (uint16_t)src & RMASK;
+  src_mask = (uint16_t)src & RMASK[s];
   src_ptr = RBASE[s] + src_mask;
 
-  if( (src_mask + len) > RSIZE ) 
+  if( (src_mask + len) > RSIZE[s] ) 
   {
-    size = RSIZE - src_mask;
+    size = RSIZE[s] - src_mask;
     read(src_ptr, (uint8_t *)dst, size);
     dst += size;
     read(RBASE[s], (uint8_t *) dst, len - size);
diff --git a/Ethernet/utility/w5200.h b/utility/w5200.h
similarity index 96%
rename from Ethernet/utility/w5200.h
rename to utility/w5200.h
index 22b1db6..d73de47 100644
--- a/Ethernet/utility/w5200.h
+++ b/utility/w5200.h
@@ -163,6 +163,13 @@ class W5200Class {
    */
   void recv_data_processing(SOCKET s, uint8_t *data, uint16_t len, uint8_t peek = 0);
 
+  /**
+   * @brief Moves the Rx read pointer forward
+   *
+   * This function allows you to skip a number of bytes in the Rx pointer register.
+   */
+  void skip(SOCKET s, uint16_t len);
+
   inline void setGatewayIp(uint8_t *_addr);
   inline void getGatewayIp(uint8_t *_addr);
 
@@ -183,6 +190,8 @@ class W5200Class {
   uint16_t getTXFreeSize(SOCKET s);
   uint16_t getRXReceivedSize(SOCKET s);
   
+  void setTXMemorySizes(uint16_t * sizes);
+  void setRXMemorySizes(uint16_t * sizes);
 
   // W5100 Registers
   // ---------------
@@ -303,12 +312,12 @@ class W5200Class {
 private:
   static const uint8_t  RST = 7; // Reset BIT
   static const int SOCKETS = 8;
-  static const uint16_t SMASK = 0x07FF; // Tx buffer MASK
-  static const uint16_t RMASK = 0x07FF; // Rx buffer MASK
+  uint16_t SMASK[SOCKETS]; // Tx buffer MASK
+  uint16_t RMASK[SOCKETS]; // Rx buffer MASK
 public:
-  static const uint16_t SSIZE = 2048; // Max Tx buffer size
+  uint16_t SSIZE[SOCKETS]; // Max Tx buffer size
 private:
-  static const uint16_t RSIZE = 2048; // Max Rx buffer size
+  uint16_t RSIZE[SOCKETS]; // Max Rx buffer size
   uint16_t SBASE[SOCKETS]; // Tx buffer base address
   uint16_t RBASE[SOCKETS]; // Rx buffer base address
 
diff --git a/Ethernet/utility/w5500.cpp b/utility/w5500.cpp
similarity index 83%
rename from Ethernet/utility/w5500.cpp
rename to utility/w5500.cpp
index 07694b9..233e01a 100644
--- a/Ethernet/utility/w5500.cpp
+++ b/utility/w5500.cpp
@@ -25,10 +25,26 @@ void W5500Class::init(void)
     delay(300);
     SPI.begin();
 
+    uint16_t sizes[MAX_SOCK_NUM] = {2048,2048,2048,2048,2048,2048,2048,2048};
+    setTXMemorySizes(sizes);
+    setRXMemorySizes(sizes);
+}
+
+void W5500Class::setTXMemorySizes(uint16_t * sizes)
+{
     for (int i=0; i<MAX_SOCK_NUM; i++) {
+        SSIZE[i] = sizes[i];
         uint8_t cntl_byte = (0x0C + (i<<5));
-        write( 0x1E, cntl_byte, 2); //0x1E - Sn_RXBUF_SIZE
-        write( 0x1F, cntl_byte, 2); //0x1F - Sn_TXBUF_SIZE
+        write( 0x1F, cntl_byte, SSIZE[i] >> 10); //0x1F - Sn_TXBUF_SIZE
+    }
+}
+
+void W5500Class::setRXMemorySizes(uint16_t * sizes)
+{
+    for (int i=0; i<MAX_SOCK_NUM; i++) {
+        RSIZE[i] = sizes[i];
+        uint8_t cntl_byte = (0x0C + (i<<5));
+        write( 0x1E, cntl_byte, RSIZE[i] >> 10); //0x1E - Sn_RXBUF_SIZE
     }
 }
 
@@ -88,6 +104,14 @@ void W5500Class::recv_data_processing(SOCKET s, uint8_t *data, uint16_t len, uin
     }
 }
 
+void W5500Class::skip(SOCKET s, uint16_t len)
+{
+    uint16_t ptr;
+    ptr = readSnRX_RD(s);
+    ptr += len;
+    writeSnRX_RD(s, ptr);
+}
+
 void W5500Class::read_data(SOCKET s, volatile uint8_t *src, volatile uint8_t *dst, uint16_t len)
 {
     uint8_t cntl_byte = (0x18+(s<<5));
diff --git a/Ethernet/utility/w5500.h b/utility/w5500.h
similarity index 97%
rename from Ethernet/utility/w5500.h
rename to utility/w5500.h
index f0a9882..b87468e 100644
--- a/Ethernet/utility/w5500.h
+++ b/utility/w5500.h
@@ -166,6 +166,13 @@ class W5500Class {
    */
   void recv_data_processing(SOCKET s, uint8_t *data, uint16_t len, uint8_t peek = 0);
 
+  /**
+   * @brief Moves the Rx read pointer forward
+   *
+   * This function allows you to skip a number of bytes in the Rx pointer register.
+   */
+  void skip(SOCKET s, uint16_t len);
+
   inline void setGatewayIp(uint8_t *_addr);
   inline void getGatewayIp(uint8_t *_addr);
 
@@ -189,6 +196,8 @@ class W5500Class {
   uint16_t getTXFreeSize(SOCKET s);
   uint16_t getRXReceivedSize(SOCKET s);
   
+  void setTXMemorySizes(uint16_t * sizes);
+  void setRXMemorySizes(uint16_t * sizes);
 
   // W5500 Registers
   // ---------------
@@ -324,9 +333,9 @@ class W5500Class {
   static const int SOCKETS = 8;
 
 public:
-  static const uint16_t SSIZE = 2048; // Max Tx buffer size
+  uint16_t SSIZE[SOCKETS]; // Max Tx buffer size
 private:
-  static const uint16_t RSIZE = 2048; // Max Rx buffer size
+  uint16_t RSIZE[SOCKETS]; // Max Rx buffer size
 
 private:
 #if defined(REL_GR_KURUMI) || defined(REL_GR_KURUMI_PROTOTYPE)