diff --git a/configs/ez80f910200zco/nettest/defconfig b/configs/ez80f910200zco/nettest/defconfig
index d27ddf73807c79f54448e74db14e7f1abdf985e4..be1b18a57633f583a67616971cdee1307d99cd51 100644
--- a/configs/ez80f910200zco/nettest/defconfig
+++ b/configs/ez80f910200zco/nettest/defconfig
@@ -93,6 +93,7 @@ CONFIG_ARCH_TIMERHOOK=y
 # CONFIG_UARTn_TXBUFSIZE - Characters are buffered before
 #   being sent.  This specific the size of the transmit buffer
 # CONFIG_UARTn_BAUD - The configure BAUD of the UART.
+# CONFIG_UARTn_BITS - The number of data bits (7 or 8)
 # CONFIG_UARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity
 # CONFIG_UARTn_2STOP - 0=1 stop bit; 1=Two stop bits
 #
@@ -106,6 +107,8 @@ CONFIG_UART0_RXBUFSIZE=0
 CONFIG_UART1_RXBUFSIZE=0
 CONFIG_UART0_BAUD=57600
 CONFIG_UART1_BAUD=57600
+CONFIG_UART0_BITS=0
+CONFIG_UART1_BITS=0
 CONFIG_UART0_PARITY=0
 CONFIG_UART1_PARITY=0
 CONFIG_UART0_2STOP=0
@@ -165,6 +168,7 @@ CONFIG_HAVE_LIBM=n
 #   that will be used in the build
 # CONFIG_DEBUG - enables built-in debug options
 # CONFIG_DEBUG_VERBOSE - enables verbose debug output
+# CONFIG_DEBUG_NET - enables debug of the network subsystem
 # CONFIG_MM_REGIONS - If the architecture includes multiple
 #   regions of memory to allocate from, this specifies the
 #   number of memory regions that the memory manager must
@@ -195,19 +199,20 @@ CONFIG_HAVE_LIBM=n
 # CONFIG_DEV_CONSOLE - Set if architecture-specific logic
 #   provides /dev/console.  Enables stdout, stderr, stdin.
 # CONFIG_DEV_LOWCONSOLE - Use the simple, low-level serial console
-#   driver (minimul support)
+#   driver (minimal, write-only support)
 #
 CONFIG_EXAMPLE=nettest
 CONFIG_DEBUG=y
 CONFIG_DEBUG_VERBOSE=n
+CONFIG_DEBUG_NET=n
 CONFIG_MM_REGIONS=1
 CONFIG_ARCH_LOWPUTC=y
-CONFIG_RR_INTERVAL=0
+CONFIG_RR_INTERVAL=200
 CONFIG_SCHED_INSTRUMENTATION=n
 CONFIG_TASK_NAME_SIZE=0
 CONFIG_START_YEAR=2009
 CONFIG_START_MONTH=2
-CONFIG_START_DAY=25
+CONFIG_START_DAY=28
 CONFIG_JULIAN_TIME=n
 CONFIG_HAVE_LOWUARTINIT=y
 CONFIG_DEV_CONSOLE=y
@@ -229,9 +234,9 @@ CONFIG_DEV_LOWCONSOLE=y
 #   up waiting tasks.
 #
 CONFIG_DISABLE_CLOCK=n
-CONFIG_DISABLE_POSIX_TIMERS=y
+CONFIG_DISABLE_POSIX_TIMERS=n
 CONFIG_DISABLE_PTHREAD=y
-CONFIG_DISABLE_SIGNALS=y
+CONFIG_DISABLE_SIGNALS=n
 CONFIG_DISABLE_MQUEUE=y
 CONFIG_DISABLE_MOUNTPOINT=y
 CONFIG_DISABLE_ENVIRON=y
@@ -309,9 +314,9 @@ CONFIG_STDIO_BUFFER_SIZE=0
 CONFIG_NUNGET_CHARS=0
 CONFIG_PREALLOC_MQ_MSGS=0
 CONFIG_MQ_MAXMSGSIZE=0
-CONFIG_MAX_WDOGPARMS=2
-CONFIG_PREALLOC_WDOGS=4
-CONFIG_PREALLOC_TIMERS=0
+CONFIG_MAX_WDOGPARMS=4
+CONFIG_PREALLOC_WDOGS=8
+CONFIG_PREALLOC_TIMERS=8
 
 #
 # Framebuffer driver options
@@ -368,19 +373,21 @@ CONFIG_MMCSD_READONLY=n
 # CONFIG_NET_FWCACHE_SIZE - number of packets to remember when looking for duplicates
 CONFIG_NET=y
 CONFIG_NET_IPv6=n
-CONFIG_NSOCKET_DESCRIPTORS=16
+CONFIG_NSOCKET_DESCRIPTORS=8
 CONFIG_NET_SOCKOPTS=y
 CONFIG_NET_BUFSIZE=420
 CONFIG_NET_TCP=y
-CONFIG_NET_TCP_CONNS=40
-CONFIG_NET_MAX_LISTENPORTS=40
-CONFIG_NET_UDP=y
+CONFIG_NET_TCP_CONNS=8
+CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
+CONFIG_NET_TCPBACKLOG=n
+CONFIG_NET_MAX_LISTENPORTS=8
+CONFIG_NET_UDP=n
 CONFIG_NET_UDP_CHECKSUMS=y
 #CONFIG_NET_UDP_CONNS=10
 CONFIG_NET_ICMP=y
 CONFIG_NET_ICMP_PING=n
 #CONFIG_NET_PINGADDRCONF=0
-CONFIG_NET_STATISTICS=y
+CONFIG_NET_STATISTICS=n
 #CONFIG_NET_RECEIVE_WINDOW=
 #CONFIG_NET_ARPTAB_SIZE=8
 CONFIG_NET_BROADCAST=n
@@ -571,8 +578,8 @@ CONFIG_NX_MXCLIENTMSGS=16
 
 #
 # Settings for examples/uip
-CONFIG_EXAMPLE_UIP_IPADDR=(192<<24|168<<16|0<<8|128)
-CONFIG_EXAMPLE_UIP_DRIPADDR=(192<<24|168<<16|0<<8|1)
+CONFIG_EXAMPLE_UIP_IPADDR=(10<<24|0<<16|0<<8|2)
+CONFIG_EXAMPLE_UIP_DRIPADDR=(10<<24|0<<16|0<<8|1)
 CONFIG_EXAMPLE_UIP_NETMASK=(255<<24|255<<16|255<<8|0)
 CONFIG_EXAMPLE_UIP_SMTP=n
 CONFIG_EXAMPLE_UIP_TELNETD=n
@@ -582,13 +589,25 @@ CONFIG_EXAMPLE_UIP_WEBCLIENT=n
 
 #
 # Settings for examples/nettest
+# CONFIG_EXAMPLE_NETTEST_SERVER - The target board can act
+#   as either the client side or server side of the test
+# CONFIG_EXAMPLE_NETTEST_PERFORMANCE - If set, then the
+#   client side simply receives messages forever, allowing
+#   measurement of throughput
+# CONFIG_EXAMPLE_NETTEST_NOMAC - Set if the hardware has
+#   no MAC address; one will be assigned
+# CONFIG_EXAMPLE_NETTEST_IPADDR - Target board IP address
+# CONFIG_EXAMPLE_NETTEST_DRIPADDR - Default router address
+# CONFIG_EXAMPLE_NETTEST_NETMASK - Network mask
+# CONFIG_EXAMPLE_NETTEST_CLIENTIP - IP address of the
+#   client side of the test (may be target or host)
 CONFIG_EXAMPLE_NETTEST_SERVER=n
 CONFIG_EXAMPLE_NETTEST_PERFORMANCE=n
 CONFIG_EXAMPLE_NETTEST_NOMAC=n
-CONFIG_EXAMPLE_NETTEST_IPADDR=(192<<24|168<<16|0<<8|128)
-CONFIG_EXAMPLE_NETTEST_DRIPADDR=(192<<24|168<<16|0<<8|1)
+CONFIG_EXAMPLE_NETTEST_IPADDR=(10<<24|0<<16|0<<8|2)
+CONFIG_EXAMPLE_NETTEST_DRIPADDR=(10<<24|0<<16|0<<8|1)
 CONFIG_EXAMPLE_NETTEST_NETMASK=(255<<24|255<<16|255<<8|0)
-CONFIG_EXAMPLE_NETTEST_CLIENTIP=(192<<24|168<<16|0<<8|106)
+CONFIG_EXAMPLE_NETTEST_CLIENTIP=(10<<24|0<<16|0<<8|1)
 
 #
 # Settings for examples/ostest