diff --git a/fpga/zsbl/splitfile.sh b/fpga/zsbl/splitfile.sh
new file mode 100755
index 000000000..1e367c872
--- /dev/null
+++ b/fpga/zsbl/splitfile.sh
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+# Acquired from here.
+# https://stackoverflow.com/questions/3066948/how-to-file-split-at-a-line-number
+file_name=$1
+
+# set first K lines:
+K=512
+
+# line count (N): 
+N=$(wc -l < $file_name)
+
+# length of the bottom file:
+L=$(( $N - $K ))
+
+# create the top of file: 
+head -n $K $file_name > boot.mem
+
+# create bottom of file: 
+tail -n $L $file_name > data.mem