diff --git a/README.md b/README.md
index 7744a35..e912ab6 100644
--- a/README.md
+++ b/README.md
@@ -76,7 +76,8 @@ source "$INSTALL_DIR/conda/etc/profile.d/conda.sh"
 conda activate xc7
 git clone https://github.com/SymbiFlow/symbiflow-examples && cd symbiflow-examples
 # counter example
-pushd examples/xc7/counter_test && TARGET="arty" make && popd
+pushd examples/xc7/counter_test && TARGET="arty_50" make && popd
+pushd examples/xc7/counter_test && TARGET="arty_100" make && popd
 pushd examples/xc7/counter_test && make clean && TARGET="basys3" make && popd
 # picosoc example
 pushd examples/xc7/picosoc_demo && make && popd
diff --git a/examples/xc7/counter_test/Makefile b/examples/xc7/counter_test/Makefile
index 8e416f3..078b6c1 100644
--- a/examples/xc7/counter_test/Makefile
+++ b/examples/xc7/counter_test/Makefile
@@ -7,9 +7,13 @@ BITSTREAM_DEVICE := artix7
 SDC:=${current_dir}/counter.sdc
 BUILDDIR:=build
 
-ifeq ($(TARGET),arty)
+ifeq ($(TARGET),arty_50)
   PARTNAME := xc7a35tcsg324-1
   PCF:=${current_dir}/arty.pcf
+else ifeq ($(TARGET),arty_100)
+  PARTNAME:= xc7a100tcsg324-1
+  PCF:=${current_dir}/arty.pcf
+  DEVICE:= xc7a100t_test
 else
   PARTNAME:= xc7a35tcpg236-1
   PCF:=${current_dir}/basys3.pcf