diff --git a/rtl/w11a/pdp11_mmu.vbom b/rtl/w11a/pdp11_mmu.vbom
index be4f5ef1..b0cebe6e 100644
--- a/rtl/w11a/pdp11_mmu.vbom
+++ b/rtl/w11a/pdp11_mmu.vbom
@@ -3,8 +3,8 @@
 ../ibus/iblib.vhd
 pdp11.vbom
 # components
-pdp11_mmu_sadr.vbom
-pdp11_mmu_ssr12.vbom
+pdp11_mmu_padr.vbom
+pdp11_mmu_mmr12.vbom
 ../ibus/ib_sres_or_3.vbom
 ../ibus/ib_sel.vbom
 # design
diff --git a/rtl/w11a/pdp11_mmu_ssr12.vbom b/rtl/w11a/pdp11_mmu_mmr12.vbom
similarity index 83%
rename from rtl/w11a/pdp11_mmu_ssr12.vbom
rename to rtl/w11a/pdp11_mmu_mmr12.vbom
index 593ba148..23eb9e6a 100644
--- a/rtl/w11a/pdp11_mmu_ssr12.vbom
+++ b/rtl/w11a/pdp11_mmu_mmr12.vbom
@@ -5,4 +5,4 @@ pdp11.vbom
 # components
 ../ibus/ib_sel.vbom
 # design
-pdp11_mmu_ssr12.vhd
+pdp11_mmu_mmr12.vhd
diff --git a/rtl/w11a/pdp11_mmu_ssr12.vhd b/rtl/w11a/pdp11_mmu_mmr12.vhd
similarity index 100%
rename from rtl/w11a/pdp11_mmu_ssr12.vhd
rename to rtl/w11a/pdp11_mmu_mmr12.vhd
diff --git a/rtl/w11a/pdp11_mmu_sadr.vbom b/rtl/w11a/pdp11_mmu_padr.vbom
similarity index 92%
rename from rtl/w11a/pdp11_mmu_sadr.vbom
rename to rtl/w11a/pdp11_mmu_padr.vbom
index 5090ee40..74b9873f 100644
--- a/rtl/w11a/pdp11_mmu_sadr.vbom
+++ b/rtl/w11a/pdp11_mmu_padr.vbom
@@ -8,4 +8,4 @@ pdp11.vbom
 [xst]../vlib/memlib/ram_1swar_gen_unisim.vbom
 [vsyn]../vlib/memlib/ram_1swar_gen.vbom
 # design
-pdp11_mmu_sadr.vhd
+pdp11_mmu_padr.vhd
diff --git a/rtl/w11a/pdp11_mmu_sadr.vhd b/rtl/w11a/pdp11_mmu_padr.vhd
similarity index 100%
rename from rtl/w11a/pdp11_mmu_sadr.vhd
rename to rtl/w11a/pdp11_mmu_padr.vhd