update github actions

.github/workflows/cross_platform_tests.yml

@@ -1,33 +0,0 @@
-name: cross_platform_tests
-on: [push]
-jobs:
-  install-iverilog-source:
-    runs-on: ubuntu-latest
-    steps:
-      - run: sudo apt install bison flex g++ gcc gperf
-      - run: git clone https://github.com/steveicarus/iverilog.git
-
-      - name: autoconf
-        run: sh ./autoconf.sh
-        working-directory: iverilog/
-
-      - name: configure
-        run: ./configure
-        working-directory: iverilog/
-
-      - name: make
-        run: make -j$(nproc)
-        working-directory: iverilog/
-
-      - name: make check
-        run: make check
-        working-directory: iverilog/
-
-      - name: sudo make install
-        run: sudo make install
-        working-directory: iverilog/
-  
-  install-iverilog-apt:
-    runs-on: ubuntu-latest
-    steps:
-      - run: sudo apt install iverilog

.github/workflows/functional_simulation.yml

@@ -2,9 +2,23 @@ name: functional_simulation
 on: [push]
 jobs:
   uart:
-    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        os: [ubuntu-latest, ubuntu-22.04, ubuntu-20.04]
+    runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
       - run: sudo apt install iverilog
       - run: iverilog -g2012 -o sim.out test/uart_tb.sv src/uart_tx.sv src/uart_rx.sv
+      - run: vvp sim.out
+  
+  fifo:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, ubuntu-22.04, ubuntu-20.04]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v3
+      - run: sudo apt install iverilog
+      - run: iverilog -g2012 -o sim.out test/fifo_tb.sv src/fifo.sv src/xilinx_true_dual_port_read_first_2_clock_ram.v
       - run: vvp sim.out