diff --git a/misc/pascal/nuttx/Makefile b/misc/pascal/nuttx/Makefile
index aa041eb23c..cfabb1424d 100644
--- a/misc/pascal/nuttx/Makefile
+++ b/misc/pascal/nuttx/Makefile
@@ -33,10 +33,15 @@
 #
 ############################################################################
 
-PCODEDIR := ${shell pwd | sed -e 's/ /\\ /g'}
-
 -include $(TOPDIR)/Make.defs
 include $(APPDIR)$(DELIM)Make.defs
+DELIM ?= $(strip /)
+
+ifeq ($(CONFIG_WINDOWS_NATIVE),y)
+  PCODEDIR := ${shell echo %CD%}
+else
+  PCODEDIR := ${shell pwd | sed -e 's/ /\\ /g'}
+endif
 
 # Default tools
 
diff --git a/nuttx/ChangeLog b/nuttx/ChangeLog
index f986619a3d..73c873f01c 100644
--- a/nuttx/ChangeLog
+++ b/nuttx/ChangeLog
@@ -3712,7 +3712,10 @@
 	  From Freddie Chopin.
 	* z8encore000zco/ostest and z8f64200100kit/ostest:  Can now be modified to
 	  support the Windows native builds (see corresponding README.txt files).
-	* configures/z16f2800100zcog - All configurations updated to use the ZDS-II
+	* configs/z16f2800100zcog - All configurations updated to use the ZDS-II
 	  5.0.1 toolchain.
-	* configures/z16f2800100zcog - All configurations updated to use Kconfig/mconf
+	* configs/z16f2800100zcog - All configurations updated to use Kconfig/mconf
 	  configuration tools.
+	* configs/z16f2800100zcog/ostest - Now supports a native Windows build
+	  (other ZNEO configs may also support the native build, but this has not
+	  been verfiied).
diff --git a/nuttx/arch/z16/src/Makefile b/nuttx/arch/z16/src/Makefile
index f209dcaed8..5c0ef42beb 100644
--- a/nuttx/arch/z16/src/Makefile
+++ b/nuttx/arch/z16/src/Makefile
@@ -56,10 +56,10 @@ CFLAGS = $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(INCLUDES) $(ARCHD
 CPPFLAGS += -I$(ARCHSRCDIR)
 
 ifeq ($(CONFIG_WINDOWS_NATIVE),y)
-  LDFLAGS  += @"$(ARCHSRCDIR)/nuttx.linkcmd"
+  LDFLAGS += @"$(ARCHSRCDIR)/nuttx.linkcmd"
 else
 ifeq ($(COMPILER),zneocc.exe)
-  LDFLAGS  += @"${shell cygpath -w $(ARCHSRCDIR)/nuttx.linkcmd}"
+  LDFLAGS += @"${shell cygpath -w $(ARCHSRCDIR)/nuttx.linkcmd}"
 endif
 endif
 
@@ -108,7 +108,7 @@ ifeq ($(COMPILER),zneocc.exe)
 nuttx.linkcmd: $(LINKCMDTEMPLATE)
 	$(Q) cp -f $(LINKCMDTEMPLATE) nuttx.linkcmd
 ifeq ($(CONFIG_WINDOWS_NATIVE),y)
-	@echo "$(TOPDIR)\nuttx}"= \>>nuttx.linkcmd
+	@echo "$(TOPDIR)\nuttx"= \>>nuttx.linkcmd
 	@echo   "$(ARCHSRCDIR)\$(HEAD_OBJ)", \>>nuttx.linkcmd
 	$(Q) for %%G in ($(LINKLIBS)) do ( echo   "$(TOPDIR)\lib\%%G", \>>nuttx.linkcmd )
 	@echo   "$(ARCHSRCDIR)\board\libboard$(LIBEXT)", \>>nuttx.linkcmd
@@ -133,30 +133,42 @@ nuttx$(EXEEXT): $(HEAD_OBJ) board/libboard$(LIBEXT) nuttx.linkcmd
 	$(Q) $(LD) $(LDFLAGS)
 
 .depend: Makefile chip/Make.defs $(DEPSRCS)
+ifeq ($(CONFIG_WINDOWS_NATIVE),y)
+	$(Q) if exist board$(DELIM)Makefile ( $(MAKE) -C board TOPDIR="$(TOPDIR)" depend )
+else
 	$(Q) if [ -e board/Makefile ]; then \
 		$(MAKE) -C board TOPDIR="$(TOPDIR)" depend ; \
 	fi
+endif
 	$(Q) $(MKDEP) --dep-path chip --dep-path common "$(CC)" -- $(CFLAGS) -- $(DEPSRCS) >Make.dep
 	$(Q) touch $@
 
 # This is part of the top-level export target
 
 export_head: board/libboard$(LIBEXT) $(HEAD_OBJ)
+ifeq ($(CONFIG_WINDOWS_NATIVE),y)
+	$(Q) if exist "$(EXPORT_DIR)$(DELIM)startup" ( copy $(HEAD_OBJ) "$(EXPORT_DIR)$(DELIM)startup$(DELIM)." /b /y)
+else
 	$(Q) if [ -d "$(EXPORT_DIR)/startup" ]; then \
 		cp -f $(HEAD_OBJ) "$(EXPORT_DIR)/startup"; \
 	 else \
 		echo "$(EXPORT_DIR)/startup does not exist"; \
 		exit 1; \
 	 fi
+endif
 
 # Dependencies
 
 depend: .depend
 
 clean:
+ifeq ($(CONFIG_WINDOWS_NATIVE),y)
+	$(Q) if exist board$(DELIM)Makefile ( $(MAKE) -C board TOPDIR="$(TOPDIR)" clean )
+else
 	$(Q) if [ -e board/Makefile ]; then \
 		$(MAKE) -C board TOPDIR="$(TOPDIR)" clean ; \
 	fi
+endif
 ifeq ($(COMPILER),zneocc.exe)
 	$(call DELFILE, nuttx.linkcmd)
 	$(call DELFILE, *.asm)
@@ -167,9 +179,13 @@ endif
 	$(call CLEAN)
 
 distclean: clean
+ifeq ($(CONFIG_WINDOWS_NATIVE),y)
+	$(Q) if exist board$(DELIM)Makefile ( $(MAKE) -C board TOPDIR="$(TOPDIR)" distclean )
+else
 	$(Q) if [ -e board/Makefile ]; then \
 		$(MAKE) -C board TOPDIR="$(TOPDIR)" distclean ; \
 	fi
+endif
 	$(call DELFILE, Make.dep)
 	$(call DELFILE, .depend)
 
diff --git a/nuttx/binfmt/Makefile b/nuttx/binfmt/Makefile
index 932a5ec13b..bda9602acd 100644
--- a/nuttx/binfmt/Makefile
+++ b/nuttx/binfmt/Makefile
@@ -34,6 +34,7 @@
 ############################################################################
 
 -include $(TOPDIR)/Make.defs
+DELIM ?= $(strip /)
 
 ifeq ($(WINTOOL),y)
 INCDIROPT = -w
diff --git a/nuttx/configs/ez80f910200kitg/ostest/Make.defs b/nuttx/configs/ez80f910200kitg/ostest/Make.defs
index 0124684c67..c2aab3c9fb 100644
--- a/nuttx/configs/ez80f910200kitg/ostest/Make.defs
+++ b/nuttx/configs/ez80f910200kitg/ostest/Make.defs
@@ -181,7 +181,7 @@ define ASSEMBLE
 endef
 
 define ARCHIVE
-	echo AR: $2
+	@echo AR: $2
 	$(Q) for %%G in ($(2)) do ( "$(AR)" $(ARFLAGS) $1=-+%%G )
 endef
 
diff --git a/nuttx/configs/ez80f910200zco/dhcpd/Make.defs b/nuttx/configs/ez80f910200zco/dhcpd/Make.defs
index f227a046ce..1ad97cffe6 100644
--- a/nuttx/configs/ez80f910200zco/dhcpd/Make.defs
+++ b/nuttx/configs/ez80f910200zco/dhcpd/Make.defs
@@ -181,7 +181,7 @@ define ASSEMBLE
 endef
 
 define ARCHIVE
-	echo AR: $2
+	@echo AR: $2
 	$(Q) for %%G in ($(2)) do ( "$(AR)" $(ARFLAGS) $1=-+%%G )
 endef
 
diff --git a/nuttx/configs/ez80f910200zco/httpd/Make.defs b/nuttx/configs/ez80f910200zco/httpd/Make.defs
index 398a6ec5d1..77a5e731cf 100644
--- a/nuttx/configs/ez80f910200zco/httpd/Make.defs
+++ b/nuttx/configs/ez80f910200zco/httpd/Make.defs
@@ -181,7 +181,7 @@ define ASSEMBLE
 endef
 
 define ARCHIVE
-	echo AR: $2
+	@echo AR: $2
 	$(Q) for %%G in ($(2)) do ( "$(AR)" $(ARFLAGS) $1=-+%%G )
 endef
 
diff --git a/nuttx/configs/ez80f910200zco/nettest/Make.defs b/nuttx/configs/ez80f910200zco/nettest/Make.defs
index 02b6a22a26..c0d7c2f1d9 100644
--- a/nuttx/configs/ez80f910200zco/nettest/Make.defs
+++ b/nuttx/configs/ez80f910200zco/nettest/Make.defs
@@ -181,7 +181,7 @@ define ASSEMBLE
 endef
 
 define ARCHIVE
-	echo AR: $2
+	@echo AR: $2
 	$(Q) for %%G in ($(2)) do ( "$(AR)" $(ARFLAGS) $1=-+%%G )
 endef
 
diff --git a/nuttx/configs/ez80f910200zco/nsh/Make.defs b/nuttx/configs/ez80f910200zco/nsh/Make.defs
index 6a0c9bb73e..258e8a5dc1 100644
--- a/nuttx/configs/ez80f910200zco/nsh/Make.defs
+++ b/nuttx/configs/ez80f910200zco/nsh/Make.defs
@@ -181,7 +181,7 @@ define ASSEMBLE
 endef
 
 define ARCHIVE
-	echo AR: $2
+	@echo AR: $2
 	$(Q) for %%G in ($(2)) do ( "$(AR)" $(ARFLAGS) $1=-+%%G )
 endef
 
diff --git a/nuttx/configs/ez80f910200zco/ostest/Make.defs b/nuttx/configs/ez80f910200zco/ostest/Make.defs
index 727c68ba3b..e61e328bc2 100644
--- a/nuttx/configs/ez80f910200zco/ostest/Make.defs
+++ b/nuttx/configs/ez80f910200zco/ostest/Make.defs
@@ -181,7 +181,7 @@ define ASSEMBLE
 endef
 
 define ARCHIVE
-	echo AR: $2
+	@echo AR: $2
 	$(Q) for %%G in ($(2)) do ( "$(AR)" $(ARFLAGS) $1=-+%%G )
 endef
 
diff --git a/nuttx/configs/ez80f910200zco/poll/Make.defs b/nuttx/configs/ez80f910200zco/poll/Make.defs
index d7ba08ec0f..c6cbd46167 100644
--- a/nuttx/configs/ez80f910200zco/poll/Make.defs
+++ b/nuttx/configs/ez80f910200zco/poll/Make.defs
@@ -181,7 +181,7 @@ define ASSEMBLE
 endef
 
 define ARCHIVE
-	echo AR: $2
+	@echo AR: $2
 	$(Q) for %%G in ($(2)) do ( "$(AR)" $(ARFLAGS) $1=-+%%G )
 endef
 
diff --git a/nuttx/configs/z16f2800100zcog/README.txt b/nuttx/configs/z16f2800100zcog/README.txt
index 0c69c75bca..e12931df20 100644
--- a/nuttx/configs/z16f2800100zcog/README.txt
+++ b/nuttx/configs/z16f2800100zcog/README.txt
@@ -139,6 +139,9 @@ ostest
          the end of the lines after a line continuation (\ ^M).  If these
          trailing bad characters are manually eliminated, then the build
          will succeed on the next try.
+      d. Hmmm... when last tested, there some missing .obj files in arch/z16/src.
+         A little additional TLC might be needed to get a reliable Windows
+         native build.
 
 pashello
 --------
diff --git a/nuttx/configs/z16f2800100zcog/ostest/Make.defs b/nuttx/configs/z16f2800100zcog/ostest/Make.defs
index 1cd4250638..20565edeb6 100644
--- a/nuttx/configs/z16f2800100zcog/ostest/Make.defs
+++ b/nuttx/configs/z16f2800100zcog/ostest/Make.defs
@@ -174,7 +174,7 @@ define ASSEMBLE
 endef
 
 define ARCHIVE
-	echo AR: $2
+	@echo AR: $2
 	$(Q) for %%G in ($(2)) do ( "$(AR)" $(ARFLAGS) $1=-+%%G )
 endef
 
diff --git a/nuttx/configs/z16f2800100zcog/ostest/defconfig b/nuttx/configs/z16f2800100zcog/ostest/defconfig
index 027d6d73c9..f9ed657275 100644
--- a/nuttx/configs/z16f2800100zcog/ostest/defconfig
+++ b/nuttx/configs/z16f2800100zcog/ostest/defconfig
@@ -8,10 +8,14 @@ CONFIG_NUTTX_NEWCONFIG=y
 # Build Setup
 #
 # CONFIG_EXPERIMENTAL is not set
-CONFIG_HOST_LINUX=y
+# CONFIG_HOST_LINUX is not set
 # CONFIG_HOST_OSX is not set
-# CONFIG_HOST_WINDOWS is not set
+CONFIG_HOST_WINDOWS=y
 # CONFIG_HOST_OTHER is not set
+# CONFIG_WINDOWS_NATIVE is not set
+CONFIG_WINDOWS_CYGWIN=y
+# CONFIG_WINDOWS_MSYS is not set
+# CONFIG_WINDOWS_OTHER is not set
 
 #
 # Build Configuration
diff --git a/nuttx/configs/z16f2800100zcog/pashello/Make.defs b/nuttx/configs/z16f2800100zcog/pashello/Make.defs
index 10a5ee6893..e0cfc6e314 100644
--- a/nuttx/configs/z16f2800100zcog/pashello/Make.defs
+++ b/nuttx/configs/z16f2800100zcog/pashello/Make.defs
@@ -174,7 +174,7 @@ define ASSEMBLE
 endef
 
 define ARCHIVE
-	echo AR: $2
+	@echo AR: $2
 	$(Q) for %%G in ($(2)) do ( "$(AR)" $(ARFLAGS) $1=-+%%G )
 endef
 
diff --git a/nuttx/configs/z16f2800100zcog/pashello/defconfig b/nuttx/configs/z16f2800100zcog/pashello/defconfig
index c9f0d96731..aa0fb0b1a1 100644
--- a/nuttx/configs/z16f2800100zcog/pashello/defconfig
+++ b/nuttx/configs/z16f2800100zcog/pashello/defconfig
@@ -8,10 +8,14 @@ CONFIG_NUTTX_NEWCONFIG=y
 # Build Setup
 #
 # CONFIG_EXPERIMENTAL is not set
-CONFIG_HOST_LINUX=y
+# CONFIG_HOST_LINUX is not set
 # CONFIG_HOST_OSX is not set
-# CONFIG_HOST_WINDOWS is not set
+CONFIG_HOST_WINDOWS=y
 # CONFIG_HOST_OTHER is not set
+# CONFIG_WINDOWS_NATIVE is not set
+CONFIG_WINDOWS_CYGWIN=y
+# CONFIG_WINDOWS_MSYS is not set
+# CONFIG_WINDOWS_OTHER is not set
 
 #
 # Build Configuration
diff --git a/nuttx/configs/z16f2800100zcog/src/Makefile b/nuttx/configs/z16f2800100zcog/src/Makefile
index 0977550077..fcb4bac3ac 100644
--- a/nuttx/configs/z16f2800100zcog/src/Makefile
+++ b/nuttx/configs/z16f2800100zcog/src/Makefile
@@ -39,7 +39,7 @@ SCHEDSRCDIR = $(TOPDIR)$(DELIM)sched
 ARCHSRCDIR = $(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src
 
 ifeq ($(CONFIG_WINDOWS_NATIVE),y)
-  USRINCLUDES = -usrinc:'.;$(SCHEDSRCDIR);$(ARCHSRCDIR);$(ARCHSRCDIR)\common'
+  USRINCLUDES = -usrinc:".;$(SCHEDSRCDIR);$(ARCHSRCDIR);$(ARCHSRCDIR)\common"
 else
   WSCHEDSRCDIR = ${shell cygpath -w $(SCHEDSRCDIR)}
   WARCHSRCDIR = ${shell cygpath -w $(ARCHSRCDIR)}
diff --git a/nuttx/configs/z8encore000zco/ostest/Make.defs b/nuttx/configs/z8encore000zco/ostest/Make.defs
index 9ce0052607..e9eacba898 100644
--- a/nuttx/configs/z8encore000zco/ostest/Make.defs
+++ b/nuttx/configs/z8encore000zco/ostest/Make.defs
@@ -207,7 +207,7 @@ define ASSEMBLE
 endef
 
 define ARCHIVE
-	echo AR: $2
+	@echo AR: $2
 	$(Q) for %%G in ($(2)) do ( "$(AR)" $(ARFLAGS) $1=-+%%G )
 endef
 
diff --git a/nuttx/configs/z8f64200100kit/ostest/Make.defs b/nuttx/configs/z8f64200100kit/ostest/Make.defs
index 85cb5c4015..1cc9726aa9 100644
--- a/nuttx/configs/z8f64200100kit/ostest/Make.defs
+++ b/nuttx/configs/z8f64200100kit/ostest/Make.defs
@@ -207,7 +207,7 @@ define ASSEMBLE
 endef
 
 define ARCHIVE
-	echo AR: $2
+	@echo AR: $2
 	$(Q) for %%G in ($(2)) do ( "$(AR)" $(ARFLAGS) $1=-+%%G )
 endef
 
diff --git a/nuttx/drivers/Makefile b/nuttx/drivers/Makefile
index b2bf1b6119..aaaa67bd79 100644
--- a/nuttx/drivers/Makefile
+++ b/nuttx/drivers/Makefile
@@ -34,6 +34,7 @@
 ############################################################################
 
 -include $(TOPDIR)/Make.defs
+DELIM ?= $(strip /)
 
 ifeq ($(WINTOOL),y)
 INCDIROPT = -w
diff --git a/nuttx/syscall/Makefile b/nuttx/syscall/Makefile
index ec2627b464..4556912be5 100644
--- a/nuttx/syscall/Makefile
+++ b/nuttx/syscall/Makefile
@@ -34,6 +34,8 @@
 ###########################################################################
 
 -include $(TOPDIR)/Make.defs
+DELIM ?= $(strip /)
+
 include proxies$(DELIM)Make.defs
 include stubs$(DELIM)Make.defs