diff --git a/configs/demo9s12ne64/README.txt b/configs/demo9s12ne64/README.txt
index 0aceb49fc55..ef063b78419 100755
--- a/configs/demo9s12ne64/README.txt
+++ b/configs/demo9s12ne64/README.txt
@@ -264,24 +264,29 @@ HCS12/DEMO9S12NEC64-specific Configuration Options
 	  in this configuration: pages 3e, 3d, then 3f will appear as a
 	  contiguous address space in memory.
 
+  HCS12 Sub-system support
+
+	CONFIG_HCS12_SCI0
+	CONFIG_HCS12_SCI1
+
   HCS12 specific device driver settings:
 
-	CONFIG_SCIO_SERIAL_CONSOLE - selects the SCIO for the
-	   console and ttys0 (default is the UART0).
+	CONFIG_SCIn_SERIAL_CONSOLE - selects SCIn for the console and ttys0
+	  (default is the SCI0).
 
-	CONFIG_SCIO_RXBUFSIZE - Characters are buffered as received.
+	CONFIG_SCIn_RXBUFSIZE - Characters are buffered as received.
 	   This specific the size of the receive buffer
 
-	CONFIG_SCIO_TXBUFSIZE - Characters are buffered before
+	CONFIG_SCIn_TXBUFSIZE - Characters are buffered before
 	   being sent.  This specific the size of the transmit buffer
 
-	CONFIG_SCIO_BAUD - The configure BAUD of the UART.
+	CONFIG_SCIn_BAUD - The configure BAUD of the UART.
 
-	CONFIG_SCIO_BITS - The number of bits.  Must be either 7 or 8.
+	CONFIG_SCIn_BITS - The number of bits.  Must be either 7 or 8.
 
-	CONFIG_SCIO_PARTIY - 0=no parity, 1=odd parity, 2=even parity, 3=mark 1, 4=space 0
+	CONFIG_SCIn_PARTIY - 0=no parity, 1=odd parity, 2=even parity, 3=mark 1, 4=space 0
 
-	CONFIG_SCIO_2STOP - Two stop bits
+	CONFIG_SCIn_2STOP - Two stop bits
 
 Configurations
 ^^^^^^^^^^^^^^
diff --git a/configs/demo9s12ne64/ostest/defconfig b/configs/demo9s12ne64/ostest/defconfig
index 82fa012a3d4..9366f532122 100755
--- a/configs/demo9s12ne64/ostest/defconfig
+++ b/configs/demo9s12ne64/ostest/defconfig
@@ -33,7 +33,7 @@
 #
 ############################################################################
 #
-# architecture selection
+# Architecture selection
 #
 # CONFIG_ARCH - identifies the arch subdirectory and, hence, the
 #   processor architecture.
@@ -80,10 +80,10 @@ CONFIG_BOARD_LOOPSPERMSEC=5483
 CONFIG_DRAM_SIZE=0x00010000
 CONFIG_DRAM_START=0x20000000
 CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE)
-CONFIG_ARCH_IRQPRIO=y
+CONFIG_ARCH_IRQPRIO=n
 CONFIG_ARCH_INTERRUPTSTACK=n
 CONFIG_ARCH_STACKDUMP=y
-CONFIG_ARCH_BOOTLOADER=n
+CONFIG_ARCH_BOOTLOADER=y
 CONFIG_ARCH_LEDS=y
 CONFIG_ARCH_BUTTONS=n
 CONFIG_ARCH_CALIBRATION=n
@@ -104,27 +104,41 @@ CONFIG_ARCH_DMA=n
 CONFIG_HCS12_SERIALMON=y
 CONFIG_HCS12_NONBANKED=y
 
+#
+# CS12 Sub-system support
+#
+CONFIG_HCS12_SCI0=n
+CONFIG_HCS12_SCI1=n
+
 #
 # MC9S12NEC64 specific serial device driver settings
 #
-# CONFIG_SCIO_SERIAL_CONSOLE - selects the SCIO for the
-#   console and ttys0 (default is the SCIO).
-# CONFIG_SCIO_RXBUFSIZE - Characters are buffered as received.
+# CONFIG_SCIn_SERIAL_CONSOLE - selects SCIn for the
+#   console and ttys0 (default is the SCIn).
+# CONFIG_SCIn_RXBUFSIZE - Characters are buffered as received.
 #   This specific the size of the receive buffer
-# CONFIG_SCIO_TXBUFSIZE - Characters are buffered before
+# CONFIG_SCIn_TXBUFSIZE - Characters are buffered before
 #   being sent.  This specific the size of the transmit buffer
-# CONFIG_SCIO_BAUD - The configure BAUD of the UART.  Must be
-# CONFIG_SCIO_BITS - The number of bits.  Must be either 7 or 8.
-# CONFIG_SCIO_PARTIY - 0=no parity, 1=odd parity, 2=even parity
-# CONFIG_SCIO_2STOP - Two stop bits
+# CONFIG_SCIn_BAUD - The configure BAUD of the UART.  Must be
+# CONFIG_SCIn_BITS - The number of bits.  Must be either 7 or 8.
+# CONFIG_SCIn_PARTIY - 0=no parity, 1=odd parity, 2=even parity
+# CONFIG_SCIn_2STOP - Two stop bits
 #
-CONFIG_SCIO_SERIAL_CONSOLE=y
-CONFIG_SCIO_TXBUFSIZE=32
-CONFIG_SCIO_RXBUFSIZE=32
-CONFIG_SCIO_BAUD=115200
-CONFIG_SCIO_BITS=8
-CONFIG_SCIO_PARITY=0
-CONFIG_SCIO_2STOP=0
+CONFIG_SCI0_SERIAL_CONSOLE=n
+CONFIG_SCI0_TXBUFSIZE=32
+CONFIG_SCI0_RXBUFSIZE=32
+CONFIG_SCI0_BAUD=115200
+CONFIG_SCI0_BITS=8
+CONFIG_SCI0_PARITY=0
+CONFIG_SCI0_2STOP=0
+
+CONFIG_SCI1_SERIAL_CONSOLE=n
+CONFIG_SCI1_TXBUFSIZE=32
+CONFIG_SCI1_RXBUFSIZE=32
+CONFIG_SCI1_BAUD=115200
+CONFIG_SCI1_BITS=8
+CONFIG_SCI1_PARITY=0
+CONFIG_SCI1_2STOP=0
 
 #
 # MC9S12NEC64 specific SSI device driver settings
@@ -272,8 +286,8 @@ CONFIG_START_MONTH=12
 CONFIG_START_DAY=11
 CONFIG_GREGORIAN_TIME=n
 CONFIG_JULIAN_TIME=n
-CONFIG_DEV_CONSOLE=y
-CONFIG_DEV_LOWCONSOLE=y
+CONFIG_DEV_CONSOLE=n
+CONFIG_DEV_LOWCONSOLE=n
 CONFIG_MUTEX_TYPES=n
 CONFIG_PRIORITY_INHERITANCE=n
 CONFIG_SEM_PREALLOCHOLDERS=0
@@ -303,11 +317,11 @@ CONFIG_SIG_SIGWORK=4
 # o pthread_condtimedwait() depends on signals to wake
 #   up waiting tasks.
 #
-CONFIG_DISABLE_CLOCK=n
-CONFIG_DISABLE_POSIX_TIMERS=n
-CONFIG_DISABLE_PTHREAD=n
-CONFIG_DISABLE_SIGNALS=n
-CONFIG_DISABLE_MQUEUE=n
+CONFIG_DISABLE_CLOCK=y
+CONFIG_DISABLE_POSIX_TIMERS=y
+CONFIG_DISABLE_PTHREAD=y
+CONFIG_DISABLE_SIGNALS=y
+CONFIG_DISABLE_MQUEUE=y
 CONFIG_DISABLE_MOUNTPOINT=y
 CONFIG_DISABLE_ENVIRON=y
 CONFIG_DISABLE_POLL=y
@@ -318,7 +332,7 @@ CONFIG_DISABLE_POLL=y
 # CONFIG_NOPRINTF_FIELDWIDTH - sprintf-related logic is a
 #   little smaller if we do not support fieldwidthes
 #
-CONFIG_NOPRINTF_FIELDWIDTH=n
+CONFIG_NOPRINTF_FIELDWIDTH=y
 
 #
 # Allow for architecture optimized implementations
@@ -374,19 +388,19 @@ CONFIG_ARCH_KFREE=n
 #   timer structures to minimize dynamic allocations.  Set to
 #   zero for all dynamic allocations.
 #
-CONFIG_MAX_TASKS=16
+CONFIG_MAX_TASKS=8
 CONFIG_MAX_TASK_ARGS=4
-CONFIG_NPTHREAD_KEYS=4
-CONFIG_NFILE_DESCRIPTORS=8
-CONFIG_NFILE_STREAMS=8
+CONFIG_NPTHREAD_KEYS=0
+CONFIG_NFILE_DESCRIPTORS=0
+CONFIG_NFILE_STREAMS=0
 CONFIG_NAME_MAX=32
-CONFIG_STDIO_BUFFER_SIZE=256
-CONFIG_NUNGET_CHARS=2
-CONFIG_PREALLOC_MQ_MSGS=4
-CONFIG_MQ_MAXMSGSIZE=32
+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=4
+CONFIG_PREALLOC_TIMERS=0
 
 #
 # Filesystem configuration
@@ -394,6 +408,7 @@ CONFIG_PREALLOC_TIMERS=4
 # CONFIG_FS_FAT - Enable FAT filesystem support
 # CONFIG_FAT_SECTORSIZE - Max supported sector size
 # CONFIG_FS_ROMFS - Enable ROMFS filesystem support
+#
 CONFIG_FS_FAT=n
 CONFIG_FS_ROMFS=n
 
diff --git a/configs/z80sim/ostest/defconfig b/configs/z80sim/ostest/defconfig
index 0e48ca1dcbb..301fa4e4cf0 100644
--- a/configs/z80sim/ostest/defconfig
+++ b/configs/z80sim/ostest/defconfig
@@ -210,7 +210,7 @@ CONFIG_NOPRINTF_FIELDWIDTH=y
 # Allow for architecture optimized implementations
 #
 # The architecture can provide optimized versions of the
-# following to improve sysem performance
+# following to improve system performance
 #
 CONFIG_ARCH_MEMCPY=n
 CONFIG_ARCH_MEMCMP=n
@@ -229,7 +229,7 @@ CONFIG_ARCH_KFREE=n
 # Sizes of configurable things (0 disables)
 #
 # CONFIG_MAX_TASKS - The maximum number of simultaneously
-#   actived tasks.  This value must be a power of two.
+#   active tasks.  This value must be a power of two.
 # CONFIG_MAX_TASK_ARGS - This controls the maximum number of
 #   of parameters that a task may receive (i.e., maxmum value
 #   of 'argc')
@@ -300,6 +300,7 @@ CONFIG_PREALLOC_TIMERS=0
 # CONFIG_NET_BROADCAST - Broadcast support
 # CONFIG_NET_LLH_LEN - The link level header length
 # CONFIG_NET_FWCACHE_SIZE - number of packets to remember when looking for duplicates
+#
 CONFIG_NET=n
 CONFIG_NET_IPv6=n
 CONFIG_NSOCKET_DESCRIPTORS=0