diff --git a/.github/test.sh b/.github/test.sh
index 402ddd6..af67c7b 100755
--- a/.github/test.sh
+++ b/.github/test.sh
@@ -4,14 +4,24 @@ set -e
 
 cd $(dirname "$0")/..
 
-run_sim() {
+case "$1" in
+  sim)
+    true
+  ;;
+  *)
+    echo "Unknown test suite '$1'"
+    exit 1
+  ;;
+esac
+
+run_task() {
   echo "::group::Test $1"
-  cd "$1"/sim/vhdl
-  $MAKE sim
+  cd "$1"/"$2"/vhdl
+  $MAKE "$2"
   cd ../../..
   echo '::endgroup::'
 }
 
 for item in aes cbcdes cbcmac_des cbctdes ctraes des tdes; do
-  run_sim $item
+  run_task "$item" "$1"
 done
diff --git a/.github/workflows/test.yml b/.github/workflows/simulation.yml
similarity index 52%
rename from .github/workflows/test.yml
rename to .github/workflows/simulation.yml
index aa591a3..a7ef041 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/simulation.yml
@@ -1,4 +1,4 @@
-name: 'test'
+name: 'Simulation'
 
 on:
   push:
@@ -9,34 +9,49 @@ jobs:
 
   lin:
     runs-on: ubuntu-latest
+    name: '🐧 Ubuntu 20.04'
     steps:
 
-    - uses: actions/checkout@v2
+    - name: '🧰 Checkout'
+      uses: actions/checkout@v2
       with:
         submodules: recursive
 
-    - name: Install dependencies
+    - name: '⚙️ Install dependencies'
       run: |
         sudo apt update -qq
         sudo apt install -y libssl-dev
 
-    - uses: ghdl/setup-ghdl-ci@master
+    - name: '🔧 Setup GHDL'
+      uses: ghdl/setup-ghdl-ci@master
       with:
         backend: llvm
 
-    - run: ./.github/test.sh
+    - name: '▶️ Test'
+      run: ./.github/test.sh sim
       env:
         MAKE: make
 
 
   win:
     runs-on: windows-latest
+    name: '🟪 MSYS2 MINGW64'
     defaults:
       run:
         shell: msys2 {0}
     steps:
 
-    - uses: msys2/setup-msys2@v2
+    - name: '⚙️ git config autocrlf'
+      run: git config --global core.autocrlf input
+      shell: bash
+
+    - name: '🧰 Checkout'
+      uses: actions/checkout@v2
+      with:
+        submodules: recursive
+
+    - name: '🟪 Setup MSYS2'
+      uses: msys2/setup-msys2@v2
       with:
         msystem: MINGW64
         update: true
@@ -45,13 +60,7 @@ jobs:
           mingw-w64-x86_64-ghdl-llvm
           mingw-w64-x86_64-openssl
 
-    - run: git config --global core.autocrlf input
-      shell: bash
-
-    - uses: actions/checkout@v2
-      with:
-        submodules: recursive
-
-    - run: ./.github/test.sh
+    - name: '▶️ Test'
+      run: ./.github/test.sh sim
       env:
         MAKE: mingw32-make
diff --git a/README.md b/README.md
index 5a54cf8..9b0345e 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,7 @@
-[![simulation](https://github.com/tmeissner/cryptocores/workflows/test/badge.svg?branch=master)](https://github.com/tmeissner/cryptocores/actions?query=workflow%3Atest)
+<p align="center">
+  <a title="GitHub Actions workflow 'simulation'" href="https://github.com/tmeissner/cryptocores/actions?query=workflow%3ASimulation"><img alt="'simulation' workflow Status" src="https://img.shields.io/github/workflow/status/tmeissner/cryptocores/Simulation/master?longCache=true&style=flat-square&label=build&logo=Github%20Actions&logoColor=fff"></a><!--
+  -->
+</p>
 
 # cryptocores
 Cryptography IP-cores & tests written in VHDL / Verilog