Move TinyALU clock generation to cocotb testbench

.github/workflows/main.old

@@ -0,0 +1,49 @@
+name: Regression Tests
+
+on:
+  push:
+    branches:
+    - master
+    - ral_dev
+  pull_request:
+    branches:
+    - master
+    - ral_dev
+  workflow_dispatch:
+
+jobs:
+
+
+  tests:
+
+    name: Python ${{matrix.python-version}}
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - python-version: 3.8
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python ${{matrix.python-version}}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{matrix.python-version}}
+
+    - name: Install Python testing dependencies
+      run: |
+        pip install tox tox-gh-actions
+
+    - name: Install Icarus Verilog
+      run: |
+        sudo apt install -y --no-install-recommends iverilog
+
+    - name: Install GHDL
+      run: |
+        sudo apt install -y --no-install-recommends ghdl-mcode ghdl
+
+    - name: Test
+      run: |
+        tox

.github/workflows/main.yml

@@ -12,38 +12,54 @@ on:
   workflow_dispatch:
 
 jobs:
-
-
   tests:
-
-    name: Python ${{matrix.python-version}}
-    runs-on: ubuntu-latest
+    name: Python ${{matrix.python-version}} on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
 
     strategy:
       fail-fast: false
       matrix:
-        include:
-          - python-version: 3.8
-
+        python-version: [3.8]
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        
     steps:
     - uses: actions/checkout@v2
+
     - name: Set up Python ${{matrix.python-version}}
       uses: actions/setup-python@v2
       with:
         python-version: ${{matrix.python-version}}
 
     - name: Install Python testing dependencies
-      run: |
-        pip install tox tox-gh-actions
+      run: pip install tox tox-gh-actions
 
     - name: Install Icarus Verilog
-      run: |
-        sudo apt install -y --no-install-recommends iverilog
+      if: runner.os == 'Linux'
+      run: sudo apt-get update && sudo apt install -y --no-install-recommends iverilog
+
+    - name: Install Icarus Verilog on macOS
+      if: runner.os == 'macOS'
+      run: brew install icarus-verilog
 
-    - name: Install GHDL
-      run: |
-        sudo apt install -y --no-install-recommends ghdl-mcode ghdl
+    - name: Install Icarus Verilog on Windows
+      if: runner.os == 'Windows'
+      run: choco install iverilog
 
-    - name: Test
-      run: |
-        tox
+    - name: Install GHDL
+      if: runner.os == 'Linux' || runner.os == 'Windows'
+      uses: ghdl/[email protected]
+      with:
+        version: 5.0.1
+        backend: mcode
+        investigate: true
+
+    - name: Install GHDL on macOS
+      if: runner.os == 'macOS'
+      uses: ghdl/[email protected]
+      with:
+        version: 5.0.1
+        backend: llvm
+        investigate: true
+
+    - name: Run Tests
+      run: tox

examples/TinyALU/hdl/vhdl/tinyalu.vhd

@@ -93,7 +93,7 @@ CLOCK:
 clk <=  '1' after 1 us when clk = '0' else
         '0' after 1 us when clk = '1';
 
--- purpose: This block shunts the start signal to the correct block. 
+-- purpose: This block shunts the start signal to the correct block.
 -- The multiply only sees the start signal when op(2) is '1'
 -- type   : combinational
 -- inputs : op(2),start

examples/TinyALU/tinyalu_utils.py

@@ -1,4 +1,5 @@
 import cocotb
+from cocotb.clock import Clock
 from cocotb.triggers import FallingEdge
 from cocotb.queue import QueueEmpty, Queue
 import enum
@@ -118,6 +119,7 @@ async def result_mon_bfm(self):
             prev_done = done
 
     def start_bfm(self):
+        cocotb.start_soon(Clock(self.dut.clk, 2000000, unit="ps").start())
         cocotb.start_soon(self.driver_bfm())
         cocotb.start_soon(self.cmd_mon_bfm())
         cocotb.start_soon(self.result_mon_bfm())