diff --git a/arch/z16/src/z16f/chip.h b/arch/z16/src/z16f/chip.h
new file mode 100644
index 0000000000000000000000000000000000000000..d8d5a4177453fa9d975d37d6fc8b71c4fff46735
--- /dev/null
+++ b/arch/z16/src/z16f/chip.h
@@ -0,0 +1,122 @@
+/************************************************************************************
+ * arch/z16/src/z16f/chip.h
+ * include/arch/chip/chip.h
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+#ifndef __Z16F_CHIP_H
+#define __Z16F_CHIP_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+ 
+/* Z16F Chip Variants */
+
+#if defined(CONFIG_ARCH_CHIP_Z16F2810)
+# define Z16F_INVMEM_SIZE (128*1024)
+# define Z16F_IRAM_SIZE   (4*1024)
+# undef  Z16F_HAVE_EXTMEM
+#elif defined(CONFIG_ARCH_CHIP_Z16F2811)
+# define Z16F_INVMEM_SIZE (128*1024)
+# define Z16F_IRAM_SIZE   (4*1024)
+# define Z16F_HAVE_EXTMEM  1
+#elif defined(CONFIG_ARCH_CHIP_Z16F3211)
+# define Z16F_INVMEM_SIZE (32*1024)
+# define Z16F_IRAM_SIZE   (2*1024)
+# define Z16F_HAVE_EXTMEM  1
+#elif defined(CONFIG_ARCH_CHIP_Z16F6411)
+# define Z16F_INVMEM_SIZE (64*1024)
+# define Z16F_IRAM_SIZE   (4*1024)
+# define Z16F_HAVE_EXTMEM  1
+#else
+# error "Z16F chip variant not specified"
+#endif
+
+/* Memory areas
+ *
+ * Internal non-volatile memory starts at address zero.  The size
+ * of the internal non-volatile memory is chip-dependent.
+ */
+ 
+#define Z16F_INVMEM_BASE       0x000000
+
+/* Most chip variants support external memory */
+
+#ifdef Z16F_HAVE_EXTMEM
+#  define Z16F_EXTMEMCS0_BASE  0x020000 /* External memory at CS0 */
+#  define Z16F_EXTMEMCS0_SIZE  0x7e0000 /*   (actual depends on board) */
+#  define Z16F_EXTMEMCS1_BASE  0x800000 /* External memory at CS1 */
+#  define Z16F_EXTMEMCS1_SIZE  0x700000 /*   (actual depends on board) */
+#  define Z16F_EXTMEMCS2A_BASE 0xf00000 /* External memory at CS2 */
+#  define Z16F_EXTMEMCS2A_SIZE 0x0f8000 /*   (actual depends on board) */
+#  define Z16F_EXTMEMCS2B_BASE 0xffc000 /* External memory at CS2 */
+#  define Z16F_EXTMEMCS2B_SIZE 0x000800 /*   (actual depends on board) */
+#endif
+
+/* Internal RAM always ends at 0xffbfff.  The IRAM base address depends
+ * on the size of the IRAM supported by the chip.
+ */
+ 
+#define Z16F_IRAM_BASE         (0xffc000 - Z16F_IRAM_SIZE)
+
+/* External memory mapped peripherals, internal I/O memory and SFRS */
+
+#define Z16F_EXTIO_BASE        0xffc800 /* External peripherals CS3-5 */
+#define Z16F_EXTIO_SIZE        0x001800
+#define Z16F_IIO_BASE          0xffe000 /* Internal I/O memory and SFRs */
+#define Z16F_IIO_SIZE          0x001fff
+ 
+/************************************************************************************
+ * Public Function Prototypes
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+#endif
+
+#endif  /* __Z16F_CHIP_H */
diff --git a/configs/z16f2800100zcog/Make.defs b/configs/z16f2800100zcog/Make.defs
index ee7a692cefd5581cb1ad2cab9ac3ec42766c79cf..3b11c96d00826021d0e4e51d7bbdec9f7f9d2668 100644
--- a/configs/z16f2800100zcog/Make.defs
+++ b/configs/z16f2800100zcog/Make.defs
@@ -37,10 +37,10 @@ include ${TOPDIR}/.config
 
 # These are the directories where the ZNeo-II toolchain is installed
 
-ZDSINSTALLDIR		= C:/Program\ Files/ZiLOG/ZDSII_ZNEO_4.10.2
-ZDSBINDIR		= $(ZDSINSTALLDIR)/bin
-ZDSSTDINCDIR		= $(ZDSINSTALLDIR)/include/std
-ZDSZILOGINCDIR		= $(ZDSINSTALLDIR)/include/zilog
+ZDSINSTALLDIR		:= C:/Program\ Files/ZiLOG/ZDSII_ZNEO_4.10.2
+ZDSBINDIR		:= $(ZDSINSTALLDIR)/bin
+ZDSSTDINCDIR		:= $(ZDSINSTALLDIR)/include/std
+ZDSZILOGINCDIR		:= $(ZDSINSTALLDIR)/include/zilog
 
 # These are the same directories but with the directory separator
 # character swapped as needed by the ZNeo-II compiler
@@ -49,6 +49,12 @@ WTOPDIR			:= ${shell cygpath -w $(TOPDIR)}
 WZDSSTDINCDIR		:= ${shell cygpath -w $(ZDSSTDINCDIR)}
 WZDSZILOGINCDIR		:= ${shell cygpath -w $(ZDSZILOGINCDIR)}
 
+# Escaped versions
+
+ETOPDIR			:= ${shell echo "$(WTOPDIR)" | sed -e "s/ /%20/g"}
+EZDSSTDINCDIR		:= ${shell echo "$(WZDSSTDINCDIR)" | sed -e "s/ /%20/g"}
+EZDSZILOGINCDIR		:= ${shell echo "$(WZDSZILOGINCDIR)" | sed -e "s/ /%20/g"}
+
 # Assembler definitions
 
 ifeq ("${CONFIG_DEBUG}","y")
@@ -61,7 +67,7 @@ ARCHASMCPUFLAGS		= -cpu:Z16F2811AL -NOigcase
 ARCHASMLIST		= -NOlistmac -name -pagelen:56 -pagewidth:80 -quiet
 ARCHASMWARNINGS		= -warn
 ARCHASMDEFINES		= -define:_Z16F2811AL=1 -define:_Z16K_SERIES=1 -define:_Z16F_SERIES=1 \ 				  -define:__ASSEMBLY__
-ARCHASMINCLUDES		= -include:'$(WTOPDIR)\include;$(WZDSSTDINCDIR);$(WZDSZILOGINCDIR)'
+ARCHASMINCLUDES		= -include:'$(ETOPDIR)\include;$(EZDSSTDINCDIR);$(EZDSZILOGINCDIR)'
 AFLAGS			= $(ARCHASMCPUFLAGS) $(ARCHASMINCLUDES) $(ARCHASMLIST) \
 			  $(ARCHASMWARNINGS) $(ARCHASMOPTIMIZATION)
 
@@ -121,8 +127,8 @@ define ASSEMBLE
 endef
 
 define ARCHIVE
-	@echo "AR: $2"; \
-	@$(AR) $(ARFLAGS) $1=-+$2 || { echo "$(AR) $1=-+$2 FAILED!" ; exit 1 ; }
+	echo "AR: $2"; \
+	$(AR) $(ARFLAGS) $1=-+$2 || { echo "$(AR) $1=-+$2 FAILED!" ; exit 1 ; }
 endef
 
 # This is the tool to use for dependencies (i.e., none)
diff --git a/configs/z16f2800100zcog/defconfig b/configs/z16f2800100zcog/defconfig
index da6ecf5039b0dd30b5303222445f852c04cc64ab..7b6c85b31d4abd002d38c4dae3bc440375c4023e 100644
--- a/configs/z16f2800100zcog/defconfig
+++ b/configs/z16f2800100zcog/defconfig
@@ -40,6 +40,10 @@
 # CONFIG_ARCH_Z16 - Set if processor is Z16
 # CONFIG_ARCH_CHIP - Identifies the specific chip
 # CONFIG_ARCH_CHIP_Z16F - Set if this the Z16F
+# CONFIG_ARCH_CHIP_Z16F2810 - Identifies chip variant
+# CONFIG_ARCH_CHIP_Z16F2811
+# CONFIG_ARCH_CHIP_Z16F3211
+# CONFIG_ARCH_CHIP_Z16F6411
 # CONFIG_ARCH_BOARD - identifies the configs subdirectory and, hence,
 #   the board that supports the particular chip or SoC.
 # CONFIG_ARCH_BOARD_name - for use in C code
@@ -49,6 +53,10 @@ CONFIG_ARCH=z16
 CONFIG_ARCH_Z16=y
 CONFIG_ARCH_CHIP=z16f
 CONFIG_ARCH_CHIP_Z16F=y
+CONFIG_ARCH_CHIP_Z16F2810=n
+CONFIG_ARCH_CHIP_Z16F2811=y
+CONFIG_ARCH_CHIP_Z16F3211=n
+CONFIG_ARCH_CHIP_Z16F6411=n
 CONFIG_ARCH_BOARD=z16f2800100zcog
 CONFIG_ARCH_BOARD_Z16F2800100ZCOG=y
 CONFIG_DRAM_SIZE=65536
diff --git a/include/nuttx/sched.h b/include/nuttx/sched.h
index 3f7d1ae10f7db327ee8c21e5e0aecf404b8d6e56..7386979c88932fa92e529059187b925009d112ea 100644
--- a/include/nuttx/sched.h
+++ b/include/nuttx/sched.h
@@ -90,11 +90,13 @@ enum tstate_e
   TSTATE_TASK_RUNNING    = 3, /* READY_TO_RUN - And running */
 
   TSTATE_TASK_INACTIVE   = 4, /* BLOCKED - Initialized but not yet activated */
-  TSTATE_WAIT_SEM        = 5, /* BLOCKED - Waiting for a semaphore */
+  TSTATE_WAIT_SEM        = 5  /* BLOCKED - Waiting for a semaphore */
 #ifndef CONFIG_DISABLE_SIGNALS
-  TSTATE_WAIT_SIG        = 6, /* BLOCKED - Waiting for a signal */
+  ,
+  TSTATE_WAIT_SIG        = 6  /* BLOCKED - Waiting for a signal */
 #endif
 #ifndef CONFIG_DISABLE_MQUEUE
+  ,
   TSTATE_WAIT_MQNOTEMPTY,     /* BLOCKED - Waiting for a MQ to become not empty. */
   TSTATE_WAIT_MQNOTFULL       /* BLOCKED - Waiting for a MQ to become not full. */
 #endif
diff --git a/mm/mm_environment.h b/mm/mm_environment.h
index 973fe533c5f77b9ba5ab95dc4c8d7d8eb5798e09..b844c213378c2d289ae2af7d94127491103cbe78 100644
--- a/mm/mm_environment.h
+++ b/mm/mm_environment.h
@@ -1,7 +1,7 @@
-/************************************************************
+/****************************************************************************
  * mm_environment.h
  *
- *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -14,7 +14,7 @@
  *    notice, this list of conditions and the following disclaimer in
  *    the documentation and/or other materials provided with the
  *    distribution.
- * 3. Neither the name Gregory Nutt nor the names of its contributors may be
+ * 3. Neither the name NuttX nor the names of its contributors may be
  *    used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
@@ -31,14 +31,14 @@
  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  *
- ************************************************************/
+ ****************************************************************************/
 
 #ifndef __MM_ENVIRONMENT_H
 #define __MM_ENVIRONMENT_H
 
-/************************************************************
+/****************************************************************************
  * Included Files
- ************************************************************/
+ ****************************************************************************/
 
 /* The platform configuratioin file will not be included
  * when the memory manager is built for the host-based
@@ -61,9 +61,9 @@
 # include <assert.h>
 #endif
 
-/************************************************************
+/****************************************************************************
  * Definitions
- ************************************************************/
+ ****************************************************************************/
 
 /* Special definitions used when the memory mnager is built
  * for the host-based test harness.
@@ -74,6 +74,7 @@
 /* Fake NuttX dependencies */
 
 # define FAR                        /* Normally in compiler.h */
+# define CONFIG_CPP_HAVE_VARARGS 1  /* Normally in compiler.h */
 # define CONFIG_MM_REGIONS 2        /* Normally in config.h */
 # define CONFIG_CAN_PASS_STRUCTS 1  /* Normally in config.h */
 # undef  CONFIG_SMALL_MEMORY        /* Normally in config.h */
@@ -116,12 +117,12 @@ extern void mm_addregion(FAR void *heapstart, size_t heapsize);
 # define mm_errno (*get_errno_ptr())
 #endif
 
-/************************************************************
+/****************************************************************************
  * Public Types
- ************************************************************/
+ ****************************************************************************/
 
-/************************************************************
+/****************************************************************************
  * Pulblic Function Prototypes
- ************************************************************/
+ ****************************************************************************/
 
 #endif /* __MM_ENVIRONMENT_H */
diff --git a/mm/mm_sem.c b/mm/mm_sem.c
index 66c6670612007fed5943fc32dd030474d9ffead8..74b24af566b8979c30ddd25ad02f4461dc69734e 100644
--- a/mm/mm_sem.c
+++ b/mm/mm_sem.c
@@ -1,7 +1,7 @@
-/************************************************************
+/****************************************************************************
  * mm_sem.c
  *
- *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -14,7 +14,7 @@
  *    notice, this list of conditions and the following disclaimer in
  *    the documentation and/or other materials provided with the
  *    distribution.
- * 3. Neither the name Gregory Nutt nor the names of its contributors may be
+ * 3. Neither the name NuttX nor the names of its contributors may be
  *    used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
@@ -31,11 +31,11 @@
  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  *
- ************************************************************/
+ ****************************************************************************/
 
-/************************************************************
+/****************************************************************************
  * Included Files
- ************************************************************/
+ ****************************************************************************/
 
 #include "mm_environment.h"
 #include <unistd.h>
@@ -44,9 +44,9 @@
 #include <assert.h>
 #include "mm_internal.h"
 
-/************************************************************
+/****************************************************************************
  * Definitions
- ************************************************************/
+ ****************************************************************************/
 
 /* Define the following to enable semaphore state monitoring */
 //#define MONITOR_MM_SEMAPHORE 1
@@ -59,12 +59,16 @@
 #    define msemdbg printf
 #  endif
 #else
-# define msemdbg(x...)
+#  ifdef CONFIG_CPP_HAVE_VARARGS
+#    define msemdbg(x...)
+#  else
+#    define msemdbg (void)
+#  endif
 #endif
 
-/************************************************************
+/****************************************************************************
  * Private Data
- ************************************************************/
+ ****************************************************************************/
 
 /* Mutually exclusive access to this data set is enforced with
  * the following (un-named) semaphore. */
@@ -73,17 +77,17 @@ static  sem_t g_mm_semaphore;
 static  pid_t g_holder;
 static  int   g_counts_held;
 
-/************************************************************
+/****************************************************************************
  * Public Functions
- ************************************************************/
+ ****************************************************************************/
 
-/************************************************************
+/****************************************************************************
  * Name: mm_seminitialize
  *
  * Description:
  *   Initialize the MM mutex
  *
- ************************************************************/
+ ****************************************************************************/
 
 void mm_seminitialize(void)
 {
@@ -97,7 +101,7 @@ void mm_seminitialize(void)
   g_counts_held = 0;
 }
 
-/************************************************************
+/****************************************************************************
  * Name: mm_trysemaphore
  *
  * Description:
@@ -107,7 +111,7 @@ void mm_seminitialize(void)
  *   impossible to wait on a semaphore (e.g., the idle process
  *   when it performs its background memory cleanup).
  *
- ************************************************************/
+ ****************************************************************************/
 
 #ifndef MM_TEST
 int mm_trysemaphore(void)
@@ -141,14 +145,14 @@ int mm_trysemaphore(void)
 }
 #endif
 
-/************************************************************
+/****************************************************************************
  * Name: mm_takesemaphore
  *
  * Description:
  *   Take the MM mutex.  This is the normal action before all
  *   memory management actions.
  *
- ************************************************************/
+ ****************************************************************************/
 
 void mm_takesemaphore(void)
 {
@@ -186,13 +190,13 @@ void mm_takesemaphore(void)
           g_holder, g_counts_held);
 }
 
-/************************************************************
+/****************************************************************************
  * Name: mm_givesemaphore
  *
  * Description:
  *   Release the MM mutex when it is not longer needed.
  *
- ************************************************************/
+ ****************************************************************************/
 
 void mm_givesemaphore(void)
 {
@@ -223,14 +227,14 @@ void mm_givesemaphore(void)
     }
 }
 
-/************************************************************
+/****************************************************************************
  * Name: mm_getsemaphore
  *
  * Description:
  *   Return the current value of the MM semaphore (for test
  *   purposes only)
  *
- ************************************************************/
+ ****************************************************************************/
 
 #ifdef MM_TEST
 int mm_getsemaphore(void)
diff --git a/sched/os_internal.h b/sched/os_internal.h
index a54157cd81e9a2149a1de299bac4f9910c05f109..f1ec07b56e87b058eeb2b390021863115ce49aad 100644
--- a/sched/os_internal.h
+++ b/sched/os_internal.h
@@ -74,7 +74,7 @@ enum os_crash_codes_e
   OSERR_EXITFROMINTERRUPT,    /* Interrupt code attempted to exit */
   OSERR_BADUNBLOCKSTATE,      /* Attempt to unblock from bad state */
   OSERR_BADBLOCKSTATE,        /* Attempt to block from bad state */
-  OSERR_BADREPRIORITIZESTATE, /* Attempt to reprioritize in bad state or priority */
+  OSERR_BADREPRIORITIZESTATE  /* Attempt to reprioritize in bad state or priority */
 };
 
 /* Special task IDS */