4x SRAM + 4x MBIST integrated with wishbone interconnect
diff --git a/signoff/mbist2/PDK_SOURCES b/signoff/mbist2/PDK_SOURCES
new file mode 100644
index 0000000..ca3684a
--- /dev/null
+++ b/signoff/mbist2/PDK_SOURCES
@@ -0,0 +1,6 @@
+-ne openlane 
+8d686c081c2c9aefa16dbbd8ccf5bc8f4dcabc4b
+-ne skywater-pdk 
+c094b6e83a4f9298e47f696ec5a7fd53535ec5eb
+-ne open_pdks 
+14db32aa8ba330e88632ff3ad2ff52f4f4dae1ad