making hello-world run on all Boards

libwrap/sys/puts.c

@@ -15,6 +15,10 @@ int __wrap_puts(const char *s)
 #if defined(BOARD_ehrenberg)
     while (uart_get_tx_free(uart)==0) ;
     uart_write(uart, *s);
+#elif defined(BOARD_iss)
+            *((uint32_t*) 0xFFFF0000) = *s;
+#elif defined(BOARD_TGC5L)
+            //TODO: implement
 #else
     while (UART0_REG(UART_REG_TXFIFO) & 0x80000000) ;
     UART0_REG(UART_REG_TXFIFO) = *s;