diff --git a/Makefile b/Makefile
index e7bd7b4..3862fec 100644
--- a/Makefile
+++ b/Makefile
@@ -17,23 +17,25 @@
 
 export CARAVEL_ROOT?=$(PWD)/caravel
 PRECHECK_ROOT?=${HOME}/mpw_precheck
-MCW_ROOT?=$(PWD)/mgmt_core_wrapper
+export MCW_ROOT?=$(PWD)/mgmt_core_wrapper
 SIM?=RTL
 
-export SKYWATER_COMMIT=f70d8ca46961ff92719d8870a18a076370b85f6c
-export OPEN_PDKS_COMMIT?=41c0908b47130d5675ff8484255b43f66463a7d6
-export OPENLANE_TAG=2022.07.02_01.38.08
-
 # Install lite version of caravel, (1): caravel-lite, (0): caravel
 CARAVEL_LITE?=1
 
 # PDK switch varient
-export PDK?=sky130B
+export PDK?=sky130A
+#export PDK?=gf180mcuC
 export PDKPATH?=$(PDK_ROOT)/$(PDK)
 
-MPW_TAG ?= mpw-7a
 
 
+ifeq ($(PDK),sky130A)
+	SKYWATER_COMMIT=f70d8ca46961ff92719d8870a18a076370b85f6c
+	export OPEN_PDKS_COMMIT?=0059588eebfc704681dc2368bd1d33d96281d10f
+	export OPENLANE_TAG?=2022.11.19
+	MPW_TAG ?= mpw-8c
+
 ifeq ($(CARAVEL_LITE),1)
 	CARAVEL_NAME := caravel-lite
 	CARAVEL_REPO := https://github.com/efabless/caravel-lite
@@ -44,6 +46,38 @@
 	CARAVEL_TAG := $(MPW_TAG)
 endif
 
+endif
+
+ifeq ($(PDK),sky130B)
+	SKYWATER_COMMIT=f70d8ca46961ff92719d8870a18a076370b85f6c
+	export OPEN_PDKS_COMMIT?=0059588eebfc704681dc2368bd1d33d96281d10f
+	export OPENLANE_TAG?=2022.11.19
+	MPW_TAG ?= mpw-8c
+
+ifeq ($(CARAVEL_LITE),1)
+	CARAVEL_NAME := caravel-lite
+	CARAVEL_REPO := https://github.com/efabless/caravel-lite
+	CARAVEL_TAG := $(MPW_TAG)
+else
+	CARAVEL_NAME := caravel
+	CARAVEL_REPO := https://github.com/efabless/caravel
+	CARAVEL_TAG := $(MPW_TAG)
+endif
+
+endif
+
+ifeq ($(PDK),gf180mcuC)
+
+	MPW_TAG ?= gfmpw-0b
+	CARAVEL_NAME := caravel
+	CARAVEL_REPO := https://github.com/efabless/caravel-gf180mcu
+	CARAVEL_TAG := $(MPW_TAG)
+	#OPENLANE_TAG=ddfeab57e3e8769ea3d40dda12be0460e09bb6d9
+	export OPEN_PDKS_COMMIT?=0059588eebfc704681dc2368bd1d33d96281d10f
+	export OPENLANE_TAG?=2022.11.19
+
+endif
+
 # Include Caravel Makefile Targets
 .PHONY: % : check-caravel
 %:
@@ -63,40 +97,19 @@
 simenv:
 	docker pull efabless/dv:latest
 
-# Install Sandpiper 
-.PHONY: sandpiper
-sandpiper:
-	python3 -m pip install --upgrade sandpiper-saas
-
-# Install Makerchip 
-.PHONY: makerchip
-makerchip:
-	python3 -m pip install --upgrade makerchip-app
-
 .PHONY: setup
-setup: install check-env install_mcw openlane pdk-with-volare sandpiper makerchip
+setup: install check-env install_mcw openlane pdk-with-volare setup-timing-scripts
 
 # Openlane
 blocks=$(shell cd openlane && find * -maxdepth 0 -type d)
-rtl_path=$(shell cd verilog/rtl && pwd)
-tlv_path=$(shell cd verilog/tlv && pwd)
 .PHONY: $(blocks)
 $(blocks): % :
-	@if [ -f $(tlv_path)/$@.tlv ]; then\
-		if [ -f $(rtl_path)/$@.v ]; then\
-			if [ $(tlv_path)/$@.tlv -nt  $(rtl_path)/$@.v ]; then\
-				sandpiper-saas -o $@.v -i $(tlv_path)/$@.tlv -pverilog --outdir $(rtl_path) --sv_url_inc --noline;\
-			fi;\
-		else \
-			sandpiper-saas -o $@.v -i $(tlv_path)/$@.tlv -pverilog --outdir $(rtl_path) --sv_url_inc --noline;\
-		fi;\
-	fi
 	$(MAKE) -C openlane $*
 
 dv_patterns=$(shell cd verilog/dv && find * -maxdepth 0 -type d)
 dv-targets-rtl=$(dv_patterns:%=verify-%-rtl)
 dv-targets-gl=$(dv_patterns:%=verify-%-gl)
-dv-targets-gl-sdf=$(dv_patterns	q:%=verify-%-gl-sdf)
+dv-targets-gl-sdf=$(dv_patterns:%=verify-%-gl-sdf)
 
 TARGET_PATH=$(shell pwd)
 verify_command="source ~/.bashrc && cd ${TARGET_PATH}/verilog/dv/$* && export SIM=${SIM} && make"
@@ -108,8 +121,10 @@
 		-e CARAVEL_ROOT=${CARAVEL_ROOT} \
 		-e TOOLS=/foss/tools/riscv-gnu-toolchain-rv32i/217e7f3debe424d61374d31e33a091a630535937 \
 		-e DESIGNS=$(TARGET_PATH) \
+		-e USER_PROJECT_VERILOG=$(TARGET_PATH)/verilog \
 		-e PDK=$(PDK) \
 		-e CORE_VERILOG_PATH=$(TARGET_PATH)/mgmt_core_wrapper/verilog \
+		-e CARAVEL_VERILOG_PATH=$(TARGET_PATH)/caravel/verilog \
 		-e MCW_ROOT=$(MCW_ROOT) \
 		-u $$(id -u $$USER):$$(id -g $$USER) efabless/dv:latest \
 		sh -c $(verify_command)
@@ -245,3 +260,82 @@
 	cd $(CARAVEL_ROOT) && $(MAKE) help
 	@$(MAKE) -pRrq -f $(lastword $(MAKEFILE_LIST)) : 2>/dev/null | awk -v RS= -F: '/^# File/,/^# Finished Make data base/ {if ($$1 !~ "^[#.]") {print $$1}}' | sort | egrep -v -e '^[^[:alnum:]]' -e '^$@$$'
 
+
+export CUP_ROOT=$(shell pwd)
+export TIMING_ROOT?=$(shell pwd)/deps/timing-scripts
+export PROJECT_ROOT=$(CUP_ROOT)
+timing-scripts-repo=https://github.com/efabless/timing-scripts.git
+
+$(TIMING_ROOT):
+	@mkdir -p $(CUP_ROOT)/deps
+	@git clone $(timing-scripts-repo) $(TIMING_ROOT)
+
+.PHONY: setup-timing-scripts
+setup-timing-scripts: $(TIMING_ROOT)
+	@( cd $(TIMING_ROOT) && git pull )
+	@#( cd $(TIMING_ROOT) && git fetch && git checkout $(MPW_TAG); )
+
+./verilog/gl/user_project_wrapper.v:
+	$(error you don't have $@)
+
+./env/spef-mapping.tcl: 
+	@echo "run the following:"
+	@echo "make extract-parasitics"
+	@echo "make create-spef-mapping"
+	exit 1
+
+.PHONY: create-spef-mapping
+create-spef-mapping: ./verilog/gl/user_project_wrapper.v
+	docker run \
+		--rm \
+		-u $$(id -u $$USER):$$(id -g $$USER) \
+		-v $(PDK_ROOT):$(PDK_ROOT) \
+		-v $(CUP_ROOT):$(CUP_ROOT) \
+		-v $(CARAVEL_ROOT):$(CARAVEL_ROOT) \
+		-v $(MCW_ROOT):$(MCW_ROOT) \
+		-v $(TIMING_ROOT):$(TIMING_ROOT) \
+		-w $(shell pwd) \
+		efabless/timing-scripts:latest \
+		python3 $(TIMING_ROOT)/scripts/generate_spef_mapping.py \
+			-i ./verilog/gl/user_project_wrapper.v \
+			-o ./env/spef-mapping.tcl \
+			--pdk-path $(PDK_ROOT)/$(PDK) \
+			--macro-parent mprj \
+			--project-root "$(CUP_ROOT)"
+
+.PHONY: extract-parasitics
+extract-parasitics: ./verilog/gl/user_project_wrapper.v
+	docker run \
+		--rm \
+		-u $$(id -u $$USER):$$(id -g $$USER) \
+		-v $(PDK_ROOT):$(PDK_ROOT) \
+		-v $(CUP_ROOT):$(CUP_ROOT) \
+		-v $(CARAVEL_ROOT):$(CARAVEL_ROOT) \
+		-v $(MCW_ROOT):$(MCW_ROOT) \
+		-v $(TIMING_ROOT):$(TIMING_ROOT) \
+		-w $(shell pwd) \
+		efabless/timing-scripts:latest \
+		python3 $(TIMING_ROOT)/scripts/get_macros.py \
+			-i ./verilog/gl/user_project_wrapper.v \
+			-o ./tmp-macros-list \
+			--project-root "$(CUP_ROOT)" \
+			--pdk-path $(PDK_ROOT)/$(PDK)
+	@cat ./tmp-macros-list | cut -d " " -f2 \
+		| xargs -I % bash -c "$(MAKE) -C $(TIMING_ROOT) \
+			-f $(TIMING_ROOT)/timing.mk rcx-% || echo 'Cannot extract %. Probably no def for this macro'"
+	@$(MAKE) -C $(TIMING_ROOT) -f $(TIMING_ROOT)/timing.mk rcx-user_project_wrapper
+	@cat ./tmp-macros-list
+	@rm ./tmp-macros-list
+	
+.PHONY: caravel-sta
+caravel-sta: ./env/spef-mapping.tcl
+	@$(MAKE) -C $(TIMING_ROOT) -f $(TIMING_ROOT)/timing.mk caravel-timing-typ
+	@$(MAKE) -C $(TIMING_ROOT) -f $(TIMING_ROOT)/timing.mk caravel-timing-fast
+	@$(MAKE) -C $(TIMING_ROOT) -f $(TIMING_ROOT)/timing.mk caravel-timing-slow
+	@echo =================================================Summary=================================================
+	@find $(PROJECT_ROOT)/signoff/caravel/openlane-signoff -name "*-summary.rpt" | head -n1 \
+		| xargs tail -n2 | head -n1
+	@find $(PROJECT_ROOT)/signoff/caravel/openlane-signoff -name "*-summary.rpt" \
+		| xargs -I {} tail -n1 "{}"
+	@echo =========================================================================================================
+	@echo "You can find results for all corners in $(CUP_ROOT)/signoff/caravel/openlane-signoff/timing/"
diff --git a/lef/sky130_sram_1kbyte_1rw1r_32x256_8.lef b/lef/sky130_sram_1kbyte_1rw1r_32x256_8.lef
new file mode 100644
index 0000000..30b2ff4
--- /dev/null
+++ b/lef/sky130_sram_1kbyte_1rw1r_32x256_8.lef
@@ -0,0 +1,1093 @@
+VERSION 5.4 ;
+NAMESCASESENSITIVE ON ;
+BUSBITCHARS "[]" ;
+DIVIDERCHAR "/" ;
+UNITS
+  DATABASE MICRONS 1000 ;
+END UNITS
+MACRO sky130_sram_1kbyte_1rw1r_32x256_8
+   CLASS BLOCK ;
+   SIZE 479.78 BY 397.5 ;
+   SYMMETRY X Y R90 ;
+   PIN din0[0]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  106.76 0.0 107.14 1.06 ;
+      END
+   END din0[0]
+   PIN din0[1]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  112.88 0.0 113.26 1.06 ;
+      END
+   END din0[1]
+   PIN din0[2]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  118.32 0.0 118.7 1.06 ;
+      END
+   END din0[2]
+   PIN din0[3]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  125.12 0.0 125.5 1.06 ;
+      END
+   END din0[3]
+   PIN din0[4]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  130.56 0.0 130.94 1.06 ;
+      END
+   END din0[4]
+   PIN din0[5]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  136.0 0.0 136.38 1.06 ;
+      END
+   END din0[5]
+   PIN din0[6]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  141.44 0.0 141.82 1.06 ;
+      END
+   END din0[6]
+   PIN din0[7]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  148.24 0.0 148.62 1.06 ;
+      END
+   END din0[7]
+   PIN din0[8]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  153.68 0.0 154.06 1.06 ;
+      END
+   END din0[8]
+   PIN din0[9]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  159.12 0.0 159.5 1.06 ;
+      END
+   END din0[9]
+   PIN din0[10]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  165.24 0.0 165.62 1.06 ;
+      END
+   END din0[10]
+   PIN din0[11]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  170.68 0.0 171.06 1.06 ;
+      END
+   END din0[11]
+   PIN din0[12]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  177.48 0.0 177.86 1.06 ;
+      END
+   END din0[12]
+   PIN din0[13]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  182.92 0.0 183.3 1.06 ;
+      END
+   END din0[13]
+   PIN din0[14]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  188.36 0.0 188.74 1.06 ;
+      END
+   END din0[14]
+   PIN din0[15]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  194.48 0.0 194.86 1.06 ;
+      END
+   END din0[15]
+   PIN din0[16]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  201.28 0.0 201.66 1.06 ;
+      END
+   END din0[16]
+   PIN din0[17]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  206.72 0.0 207.1 1.06 ;
+      END
+   END din0[17]
+   PIN din0[18]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  212.16 0.0 212.54 1.06 ;
+      END
+   END din0[18]
+   PIN din0[19]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  217.6 0.0 217.98 1.06 ;
+      END
+   END din0[19]
+   PIN din0[20]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  224.4 0.0 224.78 1.06 ;
+      END
+   END din0[20]
+   PIN din0[21]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  229.84 0.0 230.22 1.06 ;
+      END
+   END din0[21]
+   PIN din0[22]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  235.28 0.0 235.66 1.06 ;
+      END
+   END din0[22]
+   PIN din0[23]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  241.4 0.0 241.78 1.06 ;
+      END
+   END din0[23]
+   PIN din0[24]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  246.84 0.0 247.22 1.06 ;
+      END
+   END din0[24]
+   PIN din0[25]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  253.64 0.0 254.02 1.06 ;
+      END
+   END din0[25]
+   PIN din0[26]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  259.08 0.0 259.46 1.06 ;
+      END
+   END din0[26]
+   PIN din0[27]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  264.52 0.0 264.9 1.06 ;
+      END
+   END din0[27]
+   PIN din0[28]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  269.96 0.0 270.34 1.06 ;
+      END
+   END din0[28]
+   PIN din0[29]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  276.08 0.0 276.46 1.06 ;
+      END
+   END din0[29]
+   PIN din0[30]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  282.88 0.0 283.26 1.06 ;
+      END
+   END din0[30]
+   PIN din0[31]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  288.32 0.0 288.7 1.06 ;
+      END
+   END din0[31]
+   PIN addr0[0]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  77.52 0.0 77.9 1.06 ;
+      END
+   END addr0[0]
+   PIN addr0[1]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met3 ;
+         RECT  0.0 128.52 1.06 128.9 ;
+      END
+   END addr0[1]
+   PIN addr0[2]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met3 ;
+         RECT  0.0 137.36 1.06 137.74 ;
+      END
+   END addr0[2]
+   PIN addr0[3]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met3 ;
+         RECT  0.0 142.12 1.06 142.5 ;
+      END
+   END addr0[3]
+   PIN addr0[4]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met3 ;
+         RECT  0.0 150.28 1.06 150.66 ;
+      END
+   END addr0[4]
+   PIN addr0[5]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met3 ;
+         RECT  0.0 155.72 1.06 156.1 ;
+      END
+   END addr0[5]
+   PIN addr0[6]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met3 ;
+         RECT  0.0 164.56 1.06 164.94 ;
+      END
+   END addr0[6]
+   PIN addr0[7]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met3 ;
+         RECT  0.0 170.68 1.06 171.06 ;
+      END
+   END addr0[7]
+   PIN addr1[0]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  397.12 396.44 397.5 397.5 ;
+      END
+   END addr1[0]
+   PIN addr1[1]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met3 ;
+         RECT  478.72 82.96 479.78 83.34 ;
+      END
+   END addr1[1]
+   PIN addr1[2]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met3 ;
+         RECT  478.72 74.8 479.78 75.18 ;
+      END
+   END addr1[2]
+   PIN addr1[3]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met3 ;
+         RECT  478.72 68.0 479.78 68.38 ;
+      END
+   END addr1[3]
+   PIN addr1[4]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  415.48 0.0 415.86 1.06 ;
+      END
+   END addr1[4]
+   PIN addr1[5]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  413.44 0.0 413.82 1.06 ;
+      END
+   END addr1[5]
+   PIN addr1[6]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  414.12 0.0 414.5 1.06 ;
+      END
+   END addr1[6]
+   PIN addr1[7]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  414.8 0.0 415.18 1.06 ;
+      END
+   END addr1[7]
+   PIN csb0
+      DIRECTION INPUT ;
+      PORT
+         LAYER met3 ;
+         RECT  0.0 27.88 1.06 28.26 ;
+      END
+   END csb0
+   PIN csb1
+      DIRECTION INPUT ;
+      PORT
+         LAYER met3 ;
+         RECT  478.72 382.16 479.78 382.54 ;
+      END
+   END csb1
+   PIN web0
+      DIRECTION INPUT ;
+      PORT
+         LAYER met3 ;
+         RECT  0.0 36.04 1.06 36.42 ;
+      END
+   END web0
+   PIN clk0
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  29.24 0.0 29.62 1.06 ;
+      END
+   END clk0
+   PIN clk1
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  450.16 396.44 450.54 397.5 ;
+      END
+   END clk1
+   PIN wmask0[0]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  83.64 0.0 84.02 1.06 ;
+      END
+   END wmask0[0]
+   PIN wmask0[1]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  89.08 0.0 89.46 1.06 ;
+      END
+   END wmask0[1]
+   PIN wmask0[2]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  95.88 0.0 96.26 1.06 ;
+      END
+   END wmask0[2]
+   PIN wmask0[3]
+      DIRECTION INPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  100.64 0.0 101.02 1.06 ;
+      END
+   END wmask0[3]
+   PIN dout0[0]
+      DIRECTION OUTPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  139.4 0.0 139.78 1.06 ;
+      END
+   END dout0[0]
+   PIN dout0[1]
+      DIRECTION OUTPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  146.2 0.0 146.58 1.06 ;
+      END
+   END dout0[1]
+   PIN dout0[2]
+      DIRECTION OUTPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  151.64 0.0 152.02 1.06 ;
+      END
+   END dout0[2]
+   PIN dout0[3]
+      DIRECTION OUTPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  159.8 0.0 160.18 1.06 ;
+      END
+   END dout0[3]
+   PIN dout0[4]
+      DIRECTION OUTPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  165.92 0.0 166.3 1.06 ;
+      END
+   END dout0[4]
+   PIN dout0[5]
+      DIRECTION OUTPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  172.04 0.0 172.42 1.06 ;
+      END
+   END dout0[5]
+   PIN dout0[6]
+      DIRECTION OUTPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  178.16 0.0 178.54 1.06 ;
+      END
+   END dout0[6]
+   PIN dout0[7]
+      DIRECTION OUTPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  184.28 0.0 184.66 1.06 ;
+      END
+   END dout0[7]
+   PIN dout0[8]
+      DIRECTION OUTPUT ;
+      PORT
+         LAYER met4 ;
+         RECT  189.04 0.0 189.42 1.06 ;
+      END
+   END dout0[8]
+   PIN dout0[9]
+      DIRECTION OUTPUT ;
+      PORT
+         LAYER met4 ;
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+   END
+END    sky130_sram_1kbyte_1rw1r_32x256_8
+END    LIBRARY
diff --git a/verilog/rtl/user_defines.v b/verilog/rtl/user_defines.v
new file mode 100644
index 0000000..93feb57
--- /dev/null
+++ b/verilog/rtl/user_defines.v
@@ -0,0 +1,92 @@
+// SPDX-FileCopyrightText: 2022 Efabless Corporation
+//
+// Licensed 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.
+// SPDX-License-Identifier: Apache-2.0
+
+`default_nettype none
+
+`ifndef __USER_DEFINES_H
+// User GPIO initial configuration parameters
+`define __USER_DEFINES_H
+
+// deliberately erroneous placeholder value; user required to config GPIO's to other
+`define GPIO_MODE_INVALID                  13'hXXXX
+
+// Authoritive source of these MODE defs is: caravel/verilog/rtl/user_defines.v
+// Useful GPIO mode values.  These match the names used in defs.h.
+//
+`define GPIO_MODE_MGMT_STD_INPUT_NOPULL    13'h0403
+`define GPIO_MODE_MGMT_STD_INPUT_PULLDOWN  13'h0c01
+`define GPIO_MODE_MGMT_STD_INPUT_PULLUP    13'h0801
+`define GPIO_MODE_MGMT_STD_OUTPUT          13'h1809
+`define GPIO_MODE_MGMT_STD_BIDIRECTIONAL   13'h1801
+`define GPIO_MODE_MGMT_STD_ANALOG          13'h000b
+
+`define GPIO_MODE_USER_STD_INPUT_NOPULL    13'h0402
+`define GPIO_MODE_USER_STD_INPUT_PULLDOWN  13'h0c00
+`define GPIO_MODE_USER_STD_INPUT_PULLUP    13'h0800
+`define GPIO_MODE_USER_STD_OUTPUT          13'h1808
+`define GPIO_MODE_USER_STD_BIDIRECTIONAL   13'h1800
+`define GPIO_MODE_USER_STD_OUT_MONITORED   13'h1802
+`define GPIO_MODE_USER_STD_ANALOG          13'h000a
+
+// The power-on configuration for GPIO 0 to 4 is fixed and cannot be
+// modified (allowing the SPI and debug to always be accessible unless
+// overridden by a flash program).
+
+// The values below can be any of the standard types defined above,
+// or they can be any 13-bit value if the user wants a non-standard
+// startup state for the GPIO.  By default, every GPIO from 5 to 37
+// is set to power up as an input controlled by the management SoC.
+// Users may want to redefine these so that the user project powers
+// up in a state that can be used immediately without depending on
+// the management SoC to run a startup program to configure the GPIOs.
+
+`define USER_CONFIG_GPIO_5_INIT  `GPIO_MODE_INVALID
+`define USER_CONFIG_GPIO_6_INIT  `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_7_INIT  `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_8_INIT  `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_9_INIT  `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_10_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_11_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_12_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_13_INIT `GPIO_MODE_USER_STD_OUTPUT
+
+// Configurations of GPIO 14 to 24 are used on caravel but not caravan.
+`define USER_CONFIG_GPIO_14_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_15_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_16_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_17_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_18_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_19_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_20_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_21_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_22_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_23_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_24_INIT `GPIO_MODE_USER_STD_OUTPUT
+
+`define USER_CONFIG_GPIO_25_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_26_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_27_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_28_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_29_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_30_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_31_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_32_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_33_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_34_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_35_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_36_INIT `GPIO_MODE_USER_STD_OUTPUT
+`define USER_CONFIG_GPIO_37_INIT `GPIO_MODE_USER_STD_OUTPUT
+
+`endif // __USER_DEFINES_H
\ No newline at end of file
diff --git a/verilog/rtl/user_project_wrapper.v b/verilog/rtl/user_project_wrapper.v
index 62a1421..90b8e21 100644
--- a/verilog/rtl/user_project_wrapper.v
+++ b/verilog/rtl/user_project_wrapper.v
@@ -166,7 +166,7 @@
 
 assign la_data_out[39:0]   = {dmem_addra[7:0],dmem_dina};
 assign la_data_out[111:72] = {addr0, din0};
-assign io_out[31:0]        = dmem_doutb;
+assign io_out[37:6]        = dmem_doutb;
 endmodule	// user_project_wrapper
 
 `default_nettype wire