Index: firmware/FSC/src/w5100_spi_interface.c
===================================================================
--- firmware/FSC/src/w5100_spi_interface.c	(revision 11671)
+++ firmware/FSC/src/w5100_spi_interface.c	(revision 11681)
@@ -455,5 +455,5 @@
 	  */      for (U16 i = 0; i < NumBytes; ++i)
 		{
-			w5100_write(SO_TX_BASE + (offset + i)&SO_TX_MASK, string[i]);
+			w5100_write(S0_TX_BASE + (offset + i)&S0_TX_MASK, string[i]);
 			//usart_write_str((pU08)"wr:");
 			//usart_write_U16_hex(start_address + i);