diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -30,4 +30,5 @@ test:
 
 distclean:
 	$(MAKE) -C tests distclean
+	$(MAKE) -C designs distclean
 
diff --git a/boards/em-LeonLPP-A3PE3kL-v3-core1/em-LeonLPP-A3PE3kL_withHK-DAC.pdc b/boards/em-LeonLPP-A3PE3kL-v3-core1/em-LeonLPP-A3PE3kL_withHK-DAC.pdc
--- a/boards/em-LeonLPP-A3PE3kL-v3-core1/em-LeonLPP-A3PE3kL_withHK-DAC.pdc
+++ b/boards/em-LeonLPP-A3PE3kL-v3-core1/em-LeonLPP-A3PE3kL_withHK-DAC.pdc
@@ -78,7 +78,7 @@ set_io	{led[0]}	-pinname	K17	-fixed	yes	
 set_io	{led[1]}	-pinname	L18	-fixed	yes	-DIRECTION	Inout
 set_io	{led[2]}	-pinname	M17	-fixed	yes	-DIRECTION	Inout
 
-set_io	TAG1    -pinname	J12	-fixed	yes	-DIRECTION	Inout
+#set_io	TAG1    -pinname	J12	-fixed	yes	-DIRECTION	Inout
 set_io	TAG2	-pinname	K13	-fixed	yes	-DIRECTION	Inout
 set_io	TAG3	-pinname	L16	-fixed	yes	-DIRECTION	Inout
 set_io	TAG4	-pinname	L15	-fixed	yes	-DIRECTION	Inout
diff --git a/designs/LFR-EQM-WFP_MS-RTAX/LFR-EQM.vhd b/designs/LFR-EQM-WFP_MS-RTAX/LFR-EQM.vhd
--- a/designs/LFR-EQM-WFP_MS-RTAX/LFR-EQM.vhd
+++ b/designs/LFR-EQM-WFP_MS-RTAX/LFR-EQM.vhd
@@ -256,6 +256,7 @@ BEGIN  -- beh
       NB_APB_SLAVE    => NB_APB_SLAVE,
       ADDRESS_SIZE    => 19,
       USES_IAP_MEMCTRLR => 1,
+      USES_MBE_PIN      => 1,
       BYPASS_EDAC_MEMCTRLR => '0',
       SRBANKSZ          => 8)
     PORT MAP (
diff --git a/designs/LFR-RTAX_keypoint/LFR-EQM.vhd b/designs/LFR-RTAX_keypoint/LFR-EQM.vhd
--- a/designs/LFR-RTAX_keypoint/LFR-EQM.vhd
+++ b/designs/LFR-RTAX_keypoint/LFR-EQM.vhd
@@ -260,6 +260,7 @@ BEGIN  -- beh
       NB_APB_SLAVE    => NB_APB_SLAVE,
       ADDRESS_SIZE    => 19,
       USES_IAP_MEMCTRLR => 1,
+      USES_MBE_PIN      => 1,
       BYPASS_EDAC_MEMCTRLR => '0',
       SRBANKSZ          => 8)
     PORT MAP (
@@ -602,4 +603,4 @@ BEGIN  -- beh
     --TAG(8) <= nSRAM_BUSY;
   END GENERATE USE_DEBUG_VECTOR_IF2;
   
-END beh;
\ No newline at end of file
+END beh;
diff --git a/designs/LFR-em-WFP_MS/LFR-em.vhd b/designs/LFR-em-WFP_MS/LFR-em.vhd
--- a/designs/LFR-em-WFP_MS/LFR-em.vhd
+++ b/designs/LFR-em-WFP_MS/LFR-em.vhd
@@ -164,6 +164,7 @@ ARCHITECTURE beh OF LFR_em IS
   ----------------------------------------------------------------------------
   SIGNAL nSRAM_CE_s : STD_LOGIC_VECTOR(1 DOWNTO 0);
   SIGNAL nSRAM_READY : STD_LOGIC;
+  SIGNAL SRAM_MBE : STD_LOGIC;
 
 BEGIN  -- beh
 
@@ -234,6 +235,7 @@ BEGIN  -- beh
       NB_APB_SLAVE    => NB_APB_SLAVE,
       ADDRESS_SIZE    => 20,
       USES_IAP_MEMCTRLR => USE_IAP_MEMCTRL,
+      USES_MBE_PIN      => 0,
       BYPASS_EDAC_MEMCTRLR => '0',
       SRBANKSZ          => 9)
     PORT MAP (
@@ -256,7 +258,7 @@ BEGIN  -- beh
       nSRAM_CE  => nSRAM_CE_s,
       nSRAM_OE  => nSRAM_OE,
       nSRAM_READY => nSRAM_READY,
-      SRAM_MBE    => '0',
+      SRAM_MBE    => SRAM_MBE,
 
       apbi_ext   => apbi_ext,
       apbo_ext   => apbo_ext,
diff --git a/designs/LFR-em-WFP_MS/Makefile b/designs/LFR-em-WFP_MS/Makefile
--- a/designs/LFR-em-WFP_MS/Makefile
+++ b/designs/LFR-em-WFP_MS/Makefile
@@ -1,4 +1,3 @@
-#GRLIB=../..
 VHDLIB=../..
 SCRIPTSDIR=$(VHDLIB)/scripts/
 GRLIB := $(shell sh $(VHDLIB)/scripts/lpp_relpath.sh)
@@ -11,13 +10,9 @@ QSF=$(GRLIB)/boards/$(BOARD)/$(TOP).qsf
 EFFORT=high
 XSTOPT=
 SYNPOPT="set_option -pipe 0; set_option -retiming 0; set_option -write_apr_constraint 0"
-#VHDLSYNFILES=config.vhd ahbrom.vhd leon3mp.vhd
-#VHDLSYNFILES=config.vhd leon3mp.vhd
 VHDLSYNFILES=LFR-em.vhd
 VHDLSIMFILES=testbench.vhd
-#SIMTOP=testbench
-#SDCFILE=$(GRLIB)/boards/$(BOARD)/synplify.sdc
-#SDC=$(GRLIB)/boards/$(BOARD)/leon3mp.sdc
+
 PDC=$(VHDLIB)/boards/$(BOARD)/em-LeonLPP-A3PE3kL_withHK-DAC.pdc
 
 SDCFILE=$(VHDLIB)/boards/$(BOARD)/LFR_EM_synthesis.sdc
@@ -29,7 +24,7 @@ CLEAN=soft-clean
 TECHLIBS = proasic3e
 
 LIBSKIP = core1553bbc core1553brm core1553brt gr1553 corePCIF \
-	tmtc openchip hynix ihp gleichmann micron usbhc
+	tmtc openchip hynix ihp gleichmann micron usbhc opencores can greth
 
 DIRSKIP = b1553 pcif leon2 leon2ft crypto satcan ddr usb ata i2c \
 	pci grusbhc haps slink ascs pwm coremp7 spi ac97 \
diff --git a/designs/Makefile b/designs/Makefile
new file mode 100644
--- /dev/null
+++ b/designs/Makefile
@@ -0,0 +1,10 @@
+SUBDIRS := $(shell find ./  -maxdepth 1 -mindepth 1 -type d)
+
+all :
+
+.PHONY: force
+
+
+%:
+	-for d in $(SUBDIRS); do (cd $$d; $(MAKE) $@ ); done
+
diff --git a/lib/lpp/lpp_leon3_soc/leon3_soc.vhd b/lib/lpp/lpp_leon3_soc/leon3_soc.vhd
--- a/lib/lpp/lpp_leon3_soc/leon3_soc.vhd
+++ b/lib/lpp/lpp_leon3_soc/leon3_soc.vhd
@@ -73,6 +73,7 @@ ENTITY leon3_soc IS
     --
     ADDRESS_SIZE      : INTEGER := 19;
     USES_IAP_MEMCTRLR : INTEGER := 1;
+    USES_MBE_PIN      : INTEGER := 1;
     BYPASS_EDAC_MEMCTRLR : STD_LOGIC := '0';
     SRBANKSZ          : INTEGER := 8;
     SLOW_TIMING_EMULATION : integer := 0
@@ -446,16 +447,23 @@ BEGIN
         );
 
     memi.brdyn <= nSRAM_READY;
+    
+drv_mbe: IF USES_MBE_PIN = 1 GENERATE
+        mbe_pad : iopad
+          GENERIC MAP(tech => padtech, oepol => USES_IAP_MEMCTRLR)
+          PORT MAP(pad => SRAM_MBE,
+                   i   => mbe,
+                   en  => mbe_drive,
+                   o   => memi.bexcn);
 
-    mbe_pad : iopad
-      GENERIC MAP(tech => padtech, oepol => USES_IAP_MEMCTRLR)
-      PORT MAP(pad => SRAM_MBE,
-               i   => mbe,
-               en  => mbe_drive,
-               o   => memi.bexcn);
-
-    nSRAM_CE_s <= (memo.ramsn(1 DOWNTO 0));
-    nSRAM_OE_s <= memo.oen;
+        nSRAM_CE_s <= (memo.ramsn(1 DOWNTO 0));
+        nSRAM_OE_s <= memo.oen;
+    END GENERATE;
+    
+no_drv_mbe: IF USES_MBE_PIN /= 1 GENERATE
+        memi.bexcn <= '1';
+    END GENERATE;
+    
     
   END GENERATE;
 
diff --git a/lib/lpp/lpp_leon3_soc/lpp_leon3_soc_pkg.vhd b/lib/lpp/lpp_leon3_soc/lpp_leon3_soc_pkg.vhd
--- a/lib/lpp/lpp_leon3_soc/lpp_leon3_soc_pkg.vhd
+++ b/lib/lpp/lpp_leon3_soc/lpp_leon3_soc_pkg.vhd
@@ -55,6 +55,7 @@ PACKAGE lpp_leon3_soc_pkg IS
       NB_APB_SLAVE    : INTEGER;
       ADDRESS_SIZE    : INTEGER;
       USES_IAP_MEMCTRLR : INTEGER;
+      USES_MBE_PIN      : INTEGER:=1;
       BYPASS_EDAC_MEMCTRLR : STD_LOGIC;
       SRBANKSZ        : INTEGER := 8;
       SLOW_TIMING_EMULATION : integer := 0