diff --git a/bugs.txt b/bugs.txt
deleted file mode 100644
index 4c5a15a3c..000000000
--- a/bugs.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-1. [ ] AMO should always generate store faults never load faults.  We are generating both.
-
diff --git a/fpga/debug_notes.org b/fpga/debug_notes.org
deleted file mode 100644
index 84952d8c5..000000000
--- a/fpga/debug_notes.org
+++ /dev/null
@@ -1,16 +0,0 @@
-* December 12, 2021
-Indefinite lockup in the dcache with STATE_PTW_FAULT_CPU_BUSY
-InstrM = f884_3803
-PCM = ffff_ffff_8030_8004
-
-Indefinite lockup in the dcache with STATE_PTW_FAULT_CPU_BUSY
-InstrM = 0207_ba03
-PCM = ffff_ffff_8034_89fe
-
-Indefinite lockup in the dcache with STATE_PTW_FAULT_CPU_BUSY
-InstrM = 0016_c383
-PCM = ffff_ffff_8030_7504
-
-Indefinite lockup in the dcache with STATE_PTW_FAULT_CPU_BUSY
-InstrM = 0006_a703
-PCM = ffff_ffff_8028_fa02
diff --git a/setup.imperas.sh b/setup.imperas.sh
deleted file mode 100644
index 71d5dcfd5..000000000
--- a/setup.imperas.sh
+++ /dev/null
@@ -1,57 +0,0 @@
-#!/bin/bash
-
-IMP_HASH=56b1479
-
-REPO=davidharrishmc
-REPO=eroom1966
-git clone https://github.com/${REPO}/riscv-wally -b imperas
-
-cd riscv-wally
-WALLY=$(dirname ${BASH_SOURCE[0]:-$0})
-export WALLY=$(cd "$WALLY" && pwd)
-
-# clone the Imperas repo
-if [ ! -d external ]; then
-    mkdir -p external
-fi
-pushd external
-    if [ ! -f ImperasDV-HMC ]; then
-        git clone git@github.com:Imperas/ImperasDV-HMC.git
-    fi
-    pushd ImperasDV-HMC
-        git checkout $IMP_HASH
-    popd
-popd
-
-# Setup Imperas
-source ${WALLY}/external/ImperasDV-HMC/Imperas/bin/setup.sh
-setupImperas ${WALLY}/external/ImperasDV-HMC/Imperas
-export IMPERAS_PERSONALITY=CPUMAN_DV_ASYNC
-
-# setup QUESTA (Imperas only command, YMMV)
-svsetup -questa
-
-pushd sim
-    # With IDV
-    IMPERAS_TOOLS=$(pwd)/imperas.ic \
-        OTHERFLAGS="+TRACE2LOG_ENABLE=1 VERBOSE=1" \
-        TESTDIR=${WALLY}/external/ImperasDV-HMC/tests/riscof/work/riscv-arch-test/rv64i_m/F/src/fadd_b1-01.S  \
-        vsim -c -do "do wally-imperas.do rv64gc"
-popd
-
-# notes
-# run the pushd external  code
-
-#source external/ImperasDV-HMC/Imperas/bin/setup.sh 
-#  setupImperas /home/ross/repos/active-wally/riscv-wally/external/ImperasDV-HMC/Imperas
-#  env | grep IMPERAS
-#  export IMPERAS_PERSONALITY=CPUMAN_DV_ASYNC
-
-IMPERAS_TOOLS=$(pwd)/imperas.ic \
-OTHERFLAGS="+TRACE2LOG_ENABLE=1 VERBOSE=1" \
-TESTDIR=../../tests/riscof_lee/work/riscv-arch-test/rv64i_m/F/src/fadd_b1-01.S  \
-vsim -c -do "do wally-imperas.do rv64gc"
-
-
-# getting library issue.
-# try switching to modelsim 2022.01
diff --git a/sim/coverage b/sim/coverage
deleted file mode 100755
index 038253911..000000000
--- a/sim/coverage
+++ /dev/null
@@ -1,2 +0,0 @@
-# recompile coverage tests and run coverage including them
-pushd $WALLY/tests/coverage; make; popd; ./regression-wally -coverage
diff --git a/sim/make-tests.sh b/sim/make-tests.sh
deleted file mode 100755
index de7765086..000000000
--- a/sim/make-tests.sh
+++ /dev/null
@@ -1,16 +0,0 @@
-#!/bin/bash
-
-rm -r work*
-make allclean
-make
-# cd ../../tests/imperas-riscv-tests/
-# make allclean
-# make
-# cd ../wally-riscv-arch-test
-# make allclean
-# make
-# make XLEN=32
-# exe2memfile.pl work/*/*/*.elf
-# cd ../linux-testgen/linux-testvectors
-# ./tvLinker.sh
-# cd ../../../regression
diff --git a/sim/questa/coverage b/sim/questa/coverage
deleted file mode 100755
index 038253911..000000000
--- a/sim/questa/coverage
+++ /dev/null
@@ -1,2 +0,0 @@
-# recompile coverage tests and run coverage including them
-pushd $WALLY/tests/coverage; make; popd; ./regression-wally -coverage
diff --git a/sim/questa/sim-testfloat b/sim/questa/sim-testfloat
deleted file mode 100755
index ee13f17c9..000000000
--- a/sim/questa/sim-testfloat
+++ /dev/null
@@ -1,14 +0,0 @@
-
-# cvtint - test integer conversion unit (fcvtint)
-# cvtfp  - test floating-point conversion unit (fcvtfp)
-# cmp    - test comparison unit's LT, LE, EQ opperations (fcmp)
-# add    - test addition
-# fma    - test fma
-# sub    - test subtraction
-# div    - test division
-# sqrt   - test square root
-# all    - test everything
-
-
-wsim fdqh_ieee_rv64gc $1 --tb testbench_fp --gui
-
diff --git a/sim/questa/sim-testfloat-batch b/sim/questa/sim-testfloat-batch
deleted file mode 100755
index 52ad83c0f..000000000
--- a/sim/questa/sim-testfloat-batch
+++ /dev/null
@@ -1,17 +0,0 @@
-# Run TestFloat simulation
-
-# cvtint - test integer conversion unit (fcvtint)
-# cvtfp  - test floating-point conversion unit (fcvtfp)
-# cmp    - test comparison unit's LT, LE, EQ opperations (fcmp)
-# add    - test addition
-# fma    - test fma
-# mul    - test mult with fma
-# sub    - test subtraction
-# div    - test division
-# sqrt   - test square root
-# all    - test everything
-
-#vsim -c -do "do testfloat.do fdqh_ieee_rv64gc $1"
-wsim fdqh_ieee_rv64gc $1 --tb testbench_fp
-#wsim fdqh_ieee_rv64gc $1 --tb testbench_fp --gui
-
diff --git a/sim/questa/sim-testfloat-verilator b/sim/questa/sim-testfloat-verilator
deleted file mode 100755
index 1bd0386b9..000000000
--- a/sim/questa/sim-testfloat-verilator
+++ /dev/null
@@ -1,23 +0,0 @@
-#!/bin/bash
-
-# sim-testfloat-verilator
-# David_Harris@hmc.edu 3 April 2024 
-# Run Testfloat simulations with Verilator
-# SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
-
-# cvtint - test integer conversion unit (fcvtint)
-# cvtfp  - test floating-point conversion unit (fcvtfp)
-# cmp    - test comparison unit's LT, LE, EQ opperations (fcmp)
-# add    - test addition
-# fma    - test fma
-# mul    - test mult with fma
-# sub    - test subtraction
-# div    - test division
-# sqrt   - test square root
-# all    - test everything
-
-wsim fdqh_ieee_rv64gc add --tb testbench_fp --sim verilator
-
-# Change TEST_SIZE to only test certain FP width
-# values are QP, DP, SP, HP or all for all tests
-#vsim -voptargs=+acc work.testbenchfp -GTEST=$2 -GTEST_SIZE="all" 
diff --git a/sim/questa/sim-wally b/sim/questa/sim-wally
deleted file mode 100755
index 3359be0eb..000000000
--- a/sim/questa/sim-wally
+++ /dev/null
@@ -1,2 +0,0 @@
-wsim rv64gc arch64i --gui
-
diff --git a/sim/questa/sim-wally-batch b/sim/questa/sim-wally-batch
deleted file mode 100755
index 7b3c69339..000000000
--- a/sim/questa/sim-wally-batch
+++ /dev/null
@@ -1 +0,0 @@
-wsim rv64gc arch64i 
diff --git a/sim/run-imperasdv-tests.bash b/sim/run-imperasdv-tests.bash
deleted file mode 100755
index a9facd0e4..000000000
--- a/sim/run-imperasdv-tests.bash
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/bin/bash
-
-if [ -d results ]; then
-    rm -rf results
-fi
-mkdir -p results
-
-ALL=$(find ${WALLY}/external/ImperasDV-HMC/tests/riscof/work/riscv-arch-test/rv64i_m -name "ref" -type d)
-
-export IMPERAS_TOOLS=$(pwd)/imperas.ic
-export OTHERFLAGS="+TRACE2LOG_ENABLE=1 VERBOSE=1"
-
-for t in $ALL; do
-    export TESTDIR=$(dirname ${t})
-    OUTLOG=$(echo ${TESTDIR} | sed "s|${WALLY}/external/ImperasDV-HMC/tests/riscof/work|results|").log
-    OUTDIR=$(dirname ${OUTLOG})
-    echo "Running test ${TESTDIR} -> ${OUTDIR} :: ${OUTLOG}"
-
-    mkdir -p ${OUTDIR}
-    vsim -c -do "do wally-imperas.do rv64gc"
-    mv transcript ${OUTLOG}
-done
diff --git a/sim/test b/sim/test
deleted file mode 100644
index 9daeafb98..000000000
--- a/sim/test
+++ /dev/null
@@ -1 +0,0 @@
-test
diff --git a/sim/verilator/sim-wally-batch b/sim/verilator/sim-wally-batch
deleted file mode 100755
index 63b4a4cba..000000000
--- a/sim/verilator/sim-wally-batch
+++ /dev/null
@@ -1 +0,0 @@
-wsim -s verilator rv64gc arch64i