diff --git a/sim/questa/imperas.ic b/sim/questa/imperas.ic
index 51344b75a..af15cb972 100644
--- a/sim/questa/imperas.ic
+++ b/sim/questa/imperas.ic
@@ -15,8 +15,8 @@
 
 # bit manipulation
 --override cpu/add_Extensions=B 
-#--override cpu/add_implicit_Extensions=B 
 --override cpu/bitmanip_version=1.0.0
+--override cpu/misa_B_Zba_Zbb_Zbs=T
 
 # More extensions
 --override cpu/Zcb=T
@@ -60,17 +60,11 @@
 --override cpu/misa_Extensions_mask=0x0 # MISA not writable
 --override cpu/Sstc=T
 
-# unsuccessfully attempt to add B extension (DH 12/21/23)
-#--override cpu/add_Extensions="B"
-#--override cpu/misa_Extensions=0x0014112F
-
 # Enable SVADU hardware update of A/D bits when menvcfg.ADUE=1
 --override cpu/Svadu=T
 #--override cpu/updatePTEA=F
 #--override cpu/updatePTED=F
 
-
-# THIS NEEDS FIXING to 16
 --override cpu/PMP_registers=16
 --override cpu/PMP_undefined=T
 
diff --git a/testbench/Makefile b/testbench/Makefile
index 8ad71f522..87870b451 100644
--- a/testbench/Makefile
+++ b/testbench/Makefile
@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
 
 %.elf.memfile: %.elf
-	riscv64-unknown-elf-elf2hex --bit-width 64 --input $< --output $@
+	riscv64-unknown-elf-elf2hex  --bit-width $(if $(findstring rv32,$*),32,64) --input $< --output $@
 
 %.elf.objdump.addr: %.elf.objdump
 	extractFunctionRadix.sh $<
diff --git a/testbench/testbench.sv b/testbench/testbench.sv
index 003d4d9ae..f167482b9 100644
--- a/testbench/testbench.sv
+++ b/testbench/testbench.sv
@@ -941,7 +941,7 @@ task automatic updateProgramAddrLabelArray;
   string cmd;
 
   // if memfile, label, or addr files are out of date or don't exist, generate them
-  cmd = {"make -f ", WALLY_DIR, "/testbench/Makefile ", memfilename, " ", ProgramAddrMapFile};
+  cmd = {"make -s -f ", WALLY_DIR, "/testbench/Makefile ", memfilename, " ", ProgramAddrMapFile};
   $system(cmd);
 
   ProgramLabelMapFP = $fopen(ProgramLabelMapFile, "r");