diff --git a/arch/z80/src/ez80/Toolchain.defs b/arch/z80/src/ez80/Toolchain.defs
index e8d6f5a49a..3b64474a33 100644
--- a/arch/z80/src/ez80/Toolchain.defs
+++ b/arch/z80/src/ez80/Toolchain.defs
@@ -103,3 +103,48 @@ else
   EZDSSTDINCDIR := ${shell echo "$(WZDSSTDINCDIR)" | sed -e "s/ /%20/g"}
   EZDSZILOGINCDIR := ${shell echo "$(WZDSZILOGINCDIR)" | sed -e "s/ /%20/g"}
 endif
+
+# CPU Identification
+
+ifeq ($(CONFIG_ARCH_CHIP_EZ80F91),y)
+  ARCHCPU = eZ80F91
+  ARCHCPUDEF = _EZ80F91
+  ARCHFAMILY = _EZ80ACCLAIM!
+else ifeq ($(CONFIG_ARCH_CHIP_EZ80F92),y)
+  ARCHCPU = eZ80F92
+  ARCHCPUDEF = _EZ80F92
+  ARCHFAMILY = _EZ80ACCLAIM!
+endif
+
+# Optimization level
+
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+  ARCHASMOPTIMIZATION = -debug -NOsdiopt
+  ARCHOPTIMIZATION = -debug
+else
+  ARCHASMOPTIMIZATION = -nodebug -NOsdiopt
+  ARCHOPTIMIZATION = -nodebug
+endif
+
+ifeq ($(CONFIG_DEBUG_NOOPT),y)
+  ARCHOPTIMIZATION += -reduceopt
+#else
+#  ARCHOPTIMIZATION += -optsize
+endif
+
+# Tool names/paths.
+
+CROSSDEV =
+CC = $(ZDSBINDIR)$(DELIM)ez80cc.exe
+CPP = gcc -E
+LD = $(ZDSBINDIR)$(DELIM)ez80link.exe
+AS = $(ZDSBINDIR)$(DELIM)ez80asm.exe
+AR = $(ZDSBINDIR)$(DELIM)ez80lib.exe
+
+# File extensions
+
+ASMEXT = .asm
+OBJEXT = .obj
+LIBEXT = .lib
+EXEEXT = .lod
+HEXEXT = .hex
diff --git a/boards/z80/ez80/ez80f910200kitg/scripts/Make.defs b/boards/z80/ez80/ez80f910200kitg/scripts/Make.defs
index 8744cf1079..452f5dde4c 100644
--- a/boards/z80/ez80/ez80f910200kitg/scripts/Make.defs
+++ b/boards/z80/ez80/ez80f910200kitg/scripts/Make.defs
@@ -36,6 +36,7 @@
 include $(TOPDIR)/.config
 include $(TOPDIR)/tools/Config.mk
 include ${TOPDIR}/arch/z80/src/ez80/Toolchain.defs
+include $(TOPDIR)/boards/z80/ez80/scripts/ez80_Config.mk
 
 # CFLAGS
 
@@ -53,18 +54,6 @@ endif
 
 # Assembler definitions
 
-ifeq ($(CONFIG_ARCH_CHIP_EZ80F91),y)
-  ARCHCPU = eZ80F91
-  ARCHCPUDEF = _EZ80F91
-  ARCHFAMILY = _EZ80ACCLAIM!
-endif
-
-ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
-  ARCHASMOPTIMIZATION = -debug -NOsdiopt
-else
-  ARCHASMOPTIMIZATION = -nodebug -NOsdiopt
-endif
-
 ARCHASMCPUFLAGS = -cpu:$(ARCHCPU) -NOigcase
 ARCHASMLIST = -list -NOlistmac -name -pagelen:56 -pagewidth:80 -quiet
 ARCHASMWARNINGS = -warn
@@ -73,20 +62,8 @@ AFLAGS = $(ARCHASMCPUFLAGS) $(ARCHASMINCLUDES) $(ARCHASMLIST) $(ARCHASMWARNINGS)
 
 # Compiler definitions
 
-ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
-  ARCHOPTIMIZATION = -debug
-else
-  ARCHOPTIMIZATION = -nodebug
-endif
-
-ifeq ($(CONFIG_DEBUG_NOOPT),y)
-  ARCHOPTIMIZATION += -reduceopt
-else
-  ARCHOPTIMIZATION += -optsize
-endif
-
 ARCHCPUFLAGS = -chartype:S -promote -cpu:$(ARCHCPU) -NOgenprintf -NOmodsect \
-               -asmsw:" $(ARCHASMCPUFLAGS) $(EARCHASMINCLUDES) $(ARCHASMWARNINGS) $(ARCHASMOPTIMIZATION)"
+               -asmsw:" $(ARCHASMCPUFLAGS) $(EARCHASMINCLUDES) $(ARCHASMWARNINGS) $(ARCHOPTIMIZATION)"
 ARCHLIST = -keeplst -NOlist -NOlistinc -keepasm
 ARCHPICFLAGS =
 ARCHWARNINGS = -warn
@@ -106,93 +83,6 @@ ARFLAGS = -quiet -warn
 
 LINKCMDTEMPLATE = $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)ez80f910200kitg.linkcmd
 
-# Tool names/paths.
-
-CROSSDEV =
-CC = $(ZDSBINDIR)$(DELIM)ez80cc.exe
-CPP = gcc -E
-LD = $(ZDSBINDIR)$(DELIM)ez80link.exe
-AS = $(ZDSBINDIR)$(DELIM)ez80asm.exe
-AR = $(ZDSBINDIR)$(DELIM)ez80lib.exe
-
-# File extensions
-
-ASMEXT = .asm
-OBJEXT = .obj
-LIBEXT = .lib
-EXEEXT = .lod
-HEXEXT = .hex
-
-# These are the macros that will be used in the NuttX make system
-# to compile and assembly source files and to insert the resulting
-# object files into an archive
-
-ifeq ($(CONFIG_WINDOWS_NATIVE),y)
-
-define PREPROCESS
-	@echo CPP: $1->$2
-	$(Q) $(CPP) $(CPPFLAGS) $($(strip $1)_CPPFLAGS) $1 -o $2
-endef
-
-define COMPILE
-	$(Q) $(CC) $(CFLAGS) $($(strip $1)_CFLAGS) ${shell echo $1 | sed -e "s/\//\\/g"}
-endef
-
-define ASSEMBLE
-	$(Q) $(AS) $(AFLAGS) $($(strip $1)_AFLAGS) ${shell echo $1 | sed -e "s/\//\\/g"}
-endef
-
-define MOVEOBJ
-	$(call MOVEFILE, "$1.obj", "$2$(DELIM)$1.obj")
-	$(call MOVEFILE, "$1.lst", "$2$(DELIM)$1.lst")
-	$(call MOVEFILE, "$1.src", "$2$(DELIM)$1.src")
-endef
-
-define ARCHIVE
-	for %%G in ($(2)) do ( $(AR) $(ARFLAGS) $1=-+%%G )
-endef
-
-define CLEAN
-	$(Q) if exist *.obj (del /f /q *.obj)
-	$(Q) if exist *.src (del /f /q *.src)
-	$(Q) if exist *.lib (del /f /q *.lib)
-	$(Q) if exist *.hex (del /f /q *.hex)
-	$(Q) if exist *.lod (del /f /q *.lod)
-	$(Q) if exist *.lst (del /f /q *.lst)
-endef
-
-else
-
-define PREPROCESS
-	@echo "CPP: $1->$2"
-	$(Q) $(CPP) $(CPPFLAGS) $($(strip $1)_CPPFLAGS) $1 -o $2
-endef
-
-define COMPILE
-	$(Q) $(CC) $(CFLAGS) $($(strip $1)_CFLAGS) `cygpath -w "$1"`
-endef
-
-define ASSEMBLE
-	$(Q) $(AS) $(AFLAGS) $($(strip $1)_AFLAGS) `cygpath -w "$1"`
-endef
-
-define MOVEOBJ
-	$(call MOVEFILE, "$1.obj", "$2$(DELIM)$1.obj")
-	$(call MOVEFILE, "$1.lst", "$2$(DELIM)$1.lst")
-	$(call MOVEFILE, "$1.src", "$2$(DELIM)$1.src")
-endef
-
-define ARCHIVE
-	for __obj in $(2) ; do \
-		$(AR) $(ARFLAGS) $1=-+$$__obj \
-	done
-endef
-
-define CLEAN
-	$(Q) rm -f *.obj *.src *.lib *.hex *.lod *.lst
-endef
-endif
-
 # Windows native host tool definitions
 
 ifeq ($(CONFIG_WINDOWS_NATIVE),y)
diff --git a/boards/z80/ez80/ez80f910200zco/scripts/Make.defs b/boards/z80/ez80/ez80f910200zco/scripts/Make.defs
index a5338d019e..65bbffe1d1 100644
--- a/boards/z80/ez80/ez80f910200zco/scripts/Make.defs
+++ b/boards/z80/ez80/ez80f910200zco/scripts/Make.defs
@@ -36,6 +36,7 @@
 include $(TOPDIR)/.config
 include $(TOPDIR)/tools/Config.mk
 include ${TOPDIR}/arch/z80/src/ez80/Toolchain.defs
+include $(TOPDIR)/boards/z80/ez80/scripts/ez80_Config.mk
 
 # CFLAGS
 
@@ -53,18 +54,6 @@ endif
 
 # Assembler definitions
 
-ifeq ($(CONFIG_ARCH_CHIP_EZ80F91),y)
-  ARCHCPU = eZ80F91
-  ARCHCPUDEF = _EZ80F91
-  ARCHFAMILY = _EZ80ACCLAIM!
-endif
-
-ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
-  ARCHASMOPTIMIZATION = -debug -NOsdiopt
-else
-  ARCHASMOPTIMIZATION = -nodebug -NOsdiopt
-endif
-
 ARCHASMCPUFLAGS = -cpu:$(ARCHCPU) -NOigcase
 ARCHASMLIST = -list -NOlistmac -name -pagelen:56 -pagewidth:80 -quiet
 ARCHASMWARNINGS = -warn
@@ -73,20 +62,8 @@ AFLAGS = $(ARCHASMCPUFLAGS) $(ARCHASMINCLUDES) $(ARCHASMLIST) $(ARCHASMWARNINGS)
 
 # Compiler definitions
 
-ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
-  ARCHOPTIMIZATION = -debug
-else
-  ARCHOPTIMIZATION = -nodebug
-endif
-
-ifeq ($(CONFIG_DEBUG_NOOPT),y)
-  ARCHOPTIMIZATION += -reduceopt
-else
-  ARCHOPTIMIZATION += -optsize
-endif
-
 ARCHCPUFLAGS = -chartype:S -promote -cpu:$(ARCHCPU) -NOgenprintf -NOmodsect \
-               -asmsw:" $(ARCHASMCPUFLAGS) $(EARCHASMINCLUDES) $(ARCHASMWARNINGS) $(ARCHASMOPTIMIZATION)"
+               -asmsw:" $(ARCHASMCPUFLAGS) $(EARCHASMINCLUDES) $(ARCHASMWARNINGS) $(ARCHOPTIMIZATION)"
 ARCHLIST = -keeplst -NOlist -NOlistinc -keepasm
 ARCHPICFLAGS =
 ARCHWARNINGS = -warn
@@ -106,93 +83,6 @@ ARFLAGS = -quiet -warn
 
 LINKCMDTEMPLATE = $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)ez80f910200zco.linkcmd
 
-# Tool names/paths.
-
-CROSSDEV =
-CC = $(ZDSBINDIR)$(DELIM)ez80cc.exe
-CPP = gcc -E
-LD = $(ZDSBINDIR)$(DELIM)ez80link.exe
-AS = $(ZDSBINDIR)$(DELIM)ez80asm.exe
-AR = $(ZDSBINDIR)$(DELIM)ez80lib.exe
-
-# File extensions
-
-ASMEXT = .asm
-OBJEXT = .obj
-LIBEXT = .lib
-EXEEXT = .lod
-HEXEXT = .hex
-
-# These are the macros that will be used in the NuttX make system
-# to compile and assembly source files and to insert the resulting
-# object files into an archive
-
-ifeq ($(CONFIG_WINDOWS_NATIVE),y)
-
-define PREPROCESS
-	@echo CPP: $1->$2
-	$(Q) $(CPP) $(CPPFLAGS) $($(strip $1)_CPPFLAGS) $1 -o $2
-endef
-
-define COMPILE
-	$(Q) $(CC) $(CFLAGS) $($(strip $1)_CFLAGS) ${shell echo $1 | sed -e "s/\//\\/g"}
-endef
-
-define ASSEMBLE
-	$(Q) $(AS) $(AFLAGS) $($(strip $1)_AFLAGS) ${shell echo $1 | sed -e "s/\//\\/g"}
-endef
-
-define MOVEOBJ
-	$(call MOVEFILE, "$1.obj", "$2$(DELIM)$1.obj")
-	$(call MOVEFILE, "$1.lst", "$2$(DELIM)$1.lst")
-	$(call MOVEFILE, "$1.src", "$2$(DELIM)$1.src")
-endef
-
-define ARCHIVE
-	for %%G in ($(2)) do ( $(AR) $(ARFLAGS) $1=-+%%G )
-endef
-
-define CLEAN
-	$(Q) if exist *.obj (del /f /q *.obj)
-	$(Q) if exist *.src (del /f /q *.src)
-	$(Q) if exist *.lib (del /f /q *.lib)
-	$(Q) if exist *.hex (del /f /q *.hex)
-	$(Q) if exist *.lod (del /f /q *.lod)
-	$(Q) if exist *.lst (del /f /q *.lst)
-endef
-
-else
-
-define PREPROCESS
-	@echo "CPP: $1->$2"
-	$(Q) $(CPP) $(CPPFLAGS) $($(strip $1)_CPPFLAGS) $1 -o $2
-endef
-
-define COMPILE
-	$(Q) $(CC) $(CFLAGS) $($(strip $1)_CFLAGS) `cygpath -w "$1"`
-endef
-
-define ASSEMBLE
-	$(Q) $(AS) $(AFLAGS) $($(strip $1)_AFLAGS) `cygpath -w "$1"`
-endef
-
-define MOVEOBJ
-	$(call MOVEFILE, "$1.obj", "$2$(DELIM)$1.obj")
-	$(call MOVEFILE, "$1.lst", "$2$(DELIM)$1.lst")
-	$(call MOVEFILE, "$1.src", "$2$(DELIM)$1.src")
-endef
-
-define ARCHIVE
-	for __obj in $(2) ; do \
-		$(AR) $(ARFLAGS) $1=-+$$__obj \
-	done
-endef
-
-define CLEAN
-	$(Q) rm -f *.obj *.src *.lib *.hex *.lod *.lst
-endef
-endif
-
 # Windows native host tool definitions
 
 ifeq ($(CONFIG_WINDOWS_NATIVE),y)
diff --git a/boards/z80/ez80/makerlisp/scripts/Make.defs b/boards/z80/ez80/makerlisp/scripts/Make.defs
index 48bf48aaac..be7c09a38d 100644
--- a/boards/z80/ez80/makerlisp/scripts/Make.defs
+++ b/boards/z80/ez80/makerlisp/scripts/Make.defs
@@ -36,6 +36,7 @@
 include $(TOPDIR)/.config
 include $(TOPDIR)/tools/Config.mk
 include ${TOPDIR}/arch/z80/src/ez80/Toolchain.defs
+include $(TOPDIR)/boards/z80/ez80/scripts/ez80_Config.mk
 
 # CFLAGS
 
@@ -45,26 +46,14 @@ ifeq ($(CONFIG_WINDOWS_NATIVE),y)
   ARCHSTDINCLUDES = -stdinc:$(TOPDIR)\include;$(ZDSSTDINCDIR);$(ZDSZILOGINCDIR)
   ARCHUSRINCLUDES = -usrinc:.
 else
-  ARCHASMINCLUDES = -include:'$(WTOPDIR)/include;$(WZDSSTDINCDIR);$(WZDSZILOGINCDIR)'
-  EARCHASMINCLUDES = -include:'$(ETOPDIR)/include;$(EZDSSTDINCDIR);$(EZDSZILOGINCDIR)'
-  ARCHSTDINCLUDES = -stdinc:'$(WTOPDIR)/include;$(WZDSSTDINCDIR);$(WZDSZILOGINCDIR)'
+  ARCHASMINCLUDES = -include:'$(WTOPDIR)\include;$(WZDSSTDINCDIR);$(WZDSZILOGINCDIR)'
+  EARCHASMINCLUDES = -include:'$(ETOPDIR)\include;$(EZDSSTDINCDIR);$(EZDSZILOGINCDIR)'
+  ARCHSTDINCLUDES = -stdinc:'$(WTOPDIR)\include;$(WZDSSTDINCDIR);$(WZDSZILOGINCDIR)'
   ARCHUSRINCLUDES = -usrinc:'.'
 endif
 
 # Assembler definitions
 
-ifeq ($(CONFIG_ARCH_CHIP_EZ80F91),y)
-  ARCHCPU = eZ80F91
-  ARCHCPUDEF = _EZ80F91
-  ARCHFAMILY = _EZ80ACCLAIM!
-endif
-
-ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
-  ARCHASMOPTIMIZATION = -debug -NOsdiopt
-else
-  ARCHASMOPTIMIZATION = -nodebug -NOsdiopt
-endif
-
 ARCHASMCPUFLAGS = -cpu:$(ARCHCPU) -NOigcase
 ARCHASMLIST = -list -NOlistmac -name -pagelen:56 -pagewidth:80 -quiet
 ARCHASMWARNINGS = -warn
@@ -73,20 +62,8 @@ AFLAGS = $(ARCHASMCPUFLAGS) $(ARCHASMINCLUDES) $(ARCHASMLIST) $(ARCHASMWARNINGS)
 
 # Compiler definitions
 
-ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
-  ARCHOPTIMIZATION = -debug
-else
-  ARCHOPTIMIZATION = -nodebug
-endif
-
-ifeq ($(CONFIG_DEBUG_NOOPT),y)
-  ARCHOPTIMIZATION += -reduceopt
-else
-  ARCHOPTIMIZATION += -optsize
-endif
-
 ARCHCPUFLAGS = -chartype:S -promote -cpu:$(ARCHCPU) -NOgenprintf -NOmodsect \
-               -asmsw:" $(ARCHASMCPUFLAGS) $(EARCHASMINCLUDES) $(ARCHASMWARNINGS) $(ARCHASMOPTIMIZATION)"
+               -asmsw:" $(ARCHASMCPUFLAGS) $(EARCHASMINCLUDES) $(ARCHASMWARNINGS) $(ARCHOPTIMIZATION)"
 ARCHLIST = -keeplst -NOlist -NOlistinc -keepasm
 ARCHPICFLAGS =
 ARCHWARNINGS = -warn
@@ -114,93 +91,6 @@ endif
 
 LINKCMDTEMPLATE = $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
 
-# Tool names/paths.
-
-CROSSDEV =
-CC = $(ZDSBINDIR)$(DELIM)ez80cc.exe
-CPP = gcc -E
-LD = $(ZDSBINDIR)$(DELIM)ez80link.exe
-AS = $(ZDSBINDIR)$(DELIM)ez80asm.exe
-AR = $(ZDSBINDIR)$(DELIM)ez80lib.exe
-
-# File extensions
-
-ASMEXT = .asm
-OBJEXT = .obj
-LIBEXT = .lib
-EXEEXT = .lod
-HEXEXT = .hex
-
-# These are the macros that will be used in the NuttX make system
-# to compile and assembly source files and to insert the resulting
-# object files into an archive
-
-ifeq ($(CONFIG_WINDOWS_NATIVE),y)
-
-define PREPROCESS
-	@echo CPP: $1->$2
-	$(Q) $(CPP) $(CPPFLAGS) $($(strip $1)_CPPFLAGS) $1 -o $2
-endef
-
-define COMPILE
-	$(Q) $(CC) $(CFLAGS) $($(strip $1)_CFLAGS) ${shell echo $1 | sed -e "s/\//\\/g"}
-endef
-
-define ASSEMBLE
-	$(Q) $(AS) $(AFLAGS) $($(strip $1)_AFLAGS) ${shell echo $1 | sed -e "s/\//\\/g"}
-endef
-
-define MOVEOBJ
-	$(call MOVEFILE, "$1.obj", "$2$(DELIM)$1.obj")
-	$(call MOVEFILE, "$1.lst", "$2$(DELIM)$1.lst")
-	$(call MOVEFILE, "$1.src", "$2$(DELIM)$1.src")
-endef
-
-define ARCHIVE
-	for %%G in ($(2)) do ( $(AR) $(ARFLAGS) $1=-+%%G )
-endef
-
-define CLEAN
-	$(Q) if exist *.obj (del /f /q *.obj)
-	$(Q) if exist *.src (del /f /q *.src)
-	$(Q) if exist *.lib (del /f /q *.lib)
-	$(Q) if exist *.hex (del /f /q *.hex)
-	$(Q) if exist *.lod (del /f /q *.lod)
-	$(Q) if exist *.lst (del /f /q *.lst)
-endef
-
-else
-
-define PREPROCESS
-	@echo "CPP: $1->$2"
-	$(Q) $(CPP) $(CPPFLAGS) $($(strip $1)_CPPFLAGS) $1 -o $2
-endef
-
-define COMPILE
-	$(Q) $(CC) $(CFLAGS) $($(strip $1)_CFLAGS) `cygpath -w "$1"`
-endef
-
-define ASSEMBLE
-	$(Q) $(AS) $(AFLAGS) $($(strip $1)_AFLAGS) `cygpath -w "$1"`
-endef
-
-define MOVEOBJ
-	$(call MOVEFILE, "$1.obj", "$2$(DELIM)$1.obj")
-	$(call MOVEFILE, "$1.lst", "$2$(DELIM)$1.lst")
-	$(call MOVEFILE, "$1.src", "$2$(DELIM)$1.src")
-endef
-
-define ARCHIVE
-	for __obj in $(2) ; do \
-		$(AR) $(ARFLAGS) $1=-+$$__obj \
-	done
-endef
-
-define CLEAN
-	$(Q) rm -f *.obj *.src *.lib *.hex *.lod *.lst
-endef
-endif
-
 # Windows native host tool definitions
 
 ifeq ($(CONFIG_WINDOWS_NATIVE),y)
diff --git a/boards/z80/ez80/scripts/eZ80_Config.mk b/boards/z80/ez80/scripts/eZ80_Config.mk
new file mode 100644
index 0000000000..f0265a9421
--- /dev/null
+++ b/boards/z80/ez80/scripts/eZ80_Config.mk
@@ -0,0 +1,89 @@
+############################################################################
+# boards/z80/ez80/scripts/eZ80_Config.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+# These are the macros that will be used in the NuttX make system to compile
+# and assembly source files and to insert the resulting object files into an
+# archive.  These replace the default definitions at tools/Config.mk
+
+ifeq ($(CONFIG_WINDOWS_NATIVE),y)
+
+define PREPROCESS
+	@echo CPP: $(1)->$(2)
+	$(Q) $(CPP) $(CPPFLAGS) $($(strip $(1))_CPPFLAGS) $(1) -o $(2)
+endef
+
+define COMPILE
+	$(Q) $(CC) $(CFLAGS) $($(strip $(1))_CFLAGS) ${shell echo $(1) | sed -e "s/\//\\/g"}
+endef
+
+define ASSEMBLE
+	$(Q) $(AS) $(AFLAGS) $($(strip $(1))_AFLAGS) ${shell echo $(1) | sed -e "s/\//\\/g"}
+endef
+
+define MOVEOBJ
+	$(call MOVEFILE, "$(1).obj", "$(2)$(DELIM)$(1).obj")
+	$(call MOVEFILE, "$(1).lst", "$(2)$(DELIM)$(1).lst")
+	$(call MOVEFILE, "$(1).src", "$(2)$(DELIM)$(1).src")
+endef
+
+define ARCHIVE
+	for %%G in ($(2)) do ( $(AR) $(ARFLAGS) $(1)=-+%%G )
+endef
+
+define CLEAN
+	$(Q) if exist *.obj (del /f /q *.obj)
+	$(Q) if exist *.src (del /f /q *.src)
+	$(Q) if exist *.lib (del /f /q *.lib)
+	$(Q) if exist *.hex (del /f /q *.hex)
+	$(Q) if exist *.lod (del /f /q *.lod)
+	$(Q) if exist *.lst (del /f /q *.lst)
+endef
+
+else
+
+define PREPROCESS
+	@echo "CPP: $(1)->$(2)"
+	$(Q) $(CPP) $(CPPFLAGS) $($(strip $(1))_CPPFLAGS) $(1) -o $(2)
+endef
+
+define COMPILE
+	$(Q) $(CC) $(CFLAGS) $($(strip $(1))_CFLAGS) `cygpath -w "$(1)"`
+endef
+
+define ASSEMBLE
+	$(Q) $(AS) $(AFLAGS) $($(strip $(1))_AFLAGS) `cygpath -w "$(1)"`
+endef
+
+define MOVEOBJ
+	$(call MOVEFILE, "$(1).obj", "$(2)$(DELIM)$(1).obj")
+	$(call MOVEFILE, "$(1).lst", "$(2)$(DELIM)$(1).lst")
+	$(call MOVEFILE, "$(1).src", "$(2)$(DELIM)$(1).src")
+endef
+
+define ARCHIVE
+	for __obj in $(2) ; do \
+		$(AR) $(ARFLAGS) $(1)=-+$$__obj \
+	done
+endef
+
+define CLEAN
+	$(Q) rm -f *.obj *.src *.lib *.hex *.lod *.lst
+endef
+endif
diff --git a/boards/z80/ez80/z20x/scripts/Make.defs b/boards/z80/ez80/z20x/scripts/Make.defs
index fc654f489a..264f962673 100644
--- a/boards/z80/ez80/z20x/scripts/Make.defs
+++ b/boards/z80/ez80/z20x/scripts/Make.defs
@@ -21,6 +21,7 @@
 include $(TOPDIR)/.config
 include $(TOPDIR)/tools/Config.mk
 include ${TOPDIR}/arch/z80/src/ez80/Toolchain.defs
+include $(TOPDIR)/boards/z80/ez80/scripts/ez80_Config.mk
 
 # CFLAGS
 
@@ -38,22 +39,6 @@ endif
 
 # Assembler definitions
 
-ifeq ($(CONFIG_ARCH_CHIP_EZ80F92),y)
-  ARCHCPU = eZ80F92
-  ARCHCPUDEF = _EZ80F92
-  ARCHFAMILY = _EZ80ACCLAIM!
-else ifeq ($(CONFIG_ARCH_CHIP_EZ80F91),y)
-  ARCHCPU = eZ80F91
-  ARCHCPUDEF = _EZ80F91
-  ARCHFAMILY = _EZ80ACCLAIM!
-endif
-
-ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
-  ARCHASMOPTIMIZATION = -debug -NOsdiopt
-else
-  ARCHASMOPTIMIZATION = -nodebug -NOsdiopt
-endif
-
 ARCHASMCPUFLAGS = -cpu:$(ARCHCPU) -NOigcase
 ARCHASMLIST = -list -NOlistmac -name -pagelen:56 -pagewidth:80 -quiet
 ARCHASMWARNINGS = -warn
@@ -62,20 +47,8 @@ AFLAGS = $(ARCHASMCPUFLAGS) $(ARCHASMINCLUDES) $(ARCHASMLIST) $(ARCHASMWARNINGS)
 
 # Compiler definitions
 
-ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
-  ARCHOPTIMIZATION = -debug
-else
-  ARCHOPTIMIZATION = -nodebug
-endif
-
-ifeq ($(CONFIG_DEBUG_NOOPT),y)
-  ARCHOPTIMIZATION += -reduceopt
-else
-  ARCHOPTIMIZATION += -optsize
-endif
-
 ARCHCPUFLAGS = -chartype:S -promote -cpu:$(ARCHCPU) -NOgenprintf -NOmodsect \
-               -asmsw:" $(ARCHASMCPUFLAGS) $(EARCHASMINCLUDES) $(ARCHASMWARNINGS) $(ARCHASMOPTIMIZATION)"
+               -asmsw:" $(ARCHASMCPUFLAGS) $(EARCHASMINCLUDES) $(ARCHASMWARNINGS) $(ARCHOPTIMIZATION)"
 ARCHLIST = -keeplst -NOlist -NOlistinc -keepasm
 ARCHPICFLAGS =
 ARCHWARNINGS = -warn
@@ -103,93 +76,6 @@ endif
 
 LINKCMDTEMPLATE = $(TOPDIR)$(DELIM)boards$(DELIM)$(CONFIG_ARCH)$(DELIM)$(CONFIG_ARCH_CHIP)$(DELIM)$(CONFIG_ARCH_BOARD)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
 
-# Tool names/paths.
-
-CROSSDEV =
-CC = $(ZDSBINDIR)$(DELIM)ez80cc.exe
-CPP = gcc -E
-LD = $(ZDSBINDIR)$(DELIM)ez80link.exe
-AS = $(ZDSBINDIR)$(DELIM)ez80asm.exe
-AR = $(ZDSBINDIR)$(DELIM)ez80lib.exe
-
-# File extensions
-
-ASMEXT = .asm
-OBJEXT = .obj
-LIBEXT = .lib
-EXEEXT = .lod
-HEXEXT = .hex
-
-# These are the macros that will be used in the NuttX make system
-# to compile and assembly source files and to insert the resulting
-# object files into an archive
-
-ifeq ($(CONFIG_WINDOWS_NATIVE),y)
-
-define PREPROCESS
-	@echo CPP: $1->$2
-	$(Q) $(CPP) $(CPPFLAGS) $($(strip $1)_CPPFLAGS) $1 -o $2
-endef
-
-define COMPILE
-	$(Q) $(CC) $(CFLAGS) $($(strip $1)_CFLAGS) ${shell echo $1 | sed -e "s/\//\\/g"}
-endef
-
-define ASSEMBLE
-	$(Q) $(AS) $(AFLAGS) $($(strip $1)_AFLAGS) ${shell echo $1 | sed -e "s/\//\\/g"}
-endef
-
-define MOVEOBJ
-	$(call MOVEFILE, "$1.obj", "$2$(DELIM)$1.obj")
-	$(call MOVEFILE, "$1.lst", "$2$(DELIM)$1.lst")
-	$(call MOVEFILE, "$1.src", "$2$(DELIM)$1.src")
-endef
-
-define ARCHIVE
-	for %%G in ($(2)) do ( $(AR) $(ARFLAGS) $1=-+%%G )
-endef
-
-define CLEAN
-	$(Q) if exist *.obj (del /f /q *.obj)
-	$(Q) if exist *.src (del /f /q *.src)
-	$(Q) if exist *.lib (del /f /q *.lib)
-	$(Q) if exist *.hex (del /f /q *.hex)
-	$(Q) if exist *.lod (del /f /q *.lod)
-	$(Q) if exist *.lst (del /f /q *.lst)
-endef
-
-else
-
-define PREPROCESS
-	@echo "CPP: $1->$2"
-	$(Q) $(CPP) $(CPPFLAGS) $($(strip $1)_CPPFLAGS) $1 -o $2
-endef
-
-define COMPILE
-	$(Q) $(CC) $(CFLAGS) $($(strip $1)_CFLAGS) `cygpath -w "$1"`
-endef
-
-define ASSEMBLE
-	$(Q) $(AS) $(AFLAGS) $($(strip $1)_AFLAGS) `cygpath -w "$1"`
-endef
-
-define MOVEOBJ
-	$(call MOVEFILE, "$1.obj", "$2$(DELIM)$1.obj")
-	$(call MOVEFILE, "$1.lst", "$2$(DELIM)$1.lst")
-	$(call MOVEFILE, "$1.src", "$2$(DELIM)$1.src")
-endef
-
-define ARCHIVE
-	for __obj in $(2) ; do \
-		$(AR) $(ARFLAGS) $1=-+$$__obj \
-	done
-endef
-
-define CLEAN
-	$(Q) rm -f *.obj *.src *.lib *.hex *.lod *.lst
-endef
-endif
-
 # Windows native host tool definitions
 
 ifeq ($(CONFIG_WINDOWS_NATIVE),y)