Still detangling lowuart stuff

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@709 42af7a65-404d-4744-a932-0658087f49c3

configs/z80sim/ostest/defconfig

@@ -103,8 +103,13 @@ CONFIG_HAVE_LIBM=n
 # CONFIG_JULIAN_TIME - Enables Julian time conversions
 # CONFIG_START_YEAR, CONFIG_START_MONTH, CONFIG_START_DAY -
 #   Used to initialize the internal time logic.
+# CONFIG_HAVE_LOWUARTINIT - Provides low-level UART initialization
+#   logic as up_lowuartinit (only needed if there is no
+#   serial driver).
 # 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)
 #
 CONFIG_EXAMPLE=ostest
 CONFIG_DEBUG=n
@@ -118,7 +123,9 @@ CONFIG_START_YEAR=2007
 CONFIG_START_MONTH=2
 CONFIG_START_DAY=21
 CONFIG_JULIAN_TIME=n
+CONFIG_HAVE_LOWUARTINIT=n
 CONFIG_DEV_CONSOLE=n
+CONFIG_DEV_LOWCONSOLE=n
 
 #
 # The following can be used to disable categories of