Initial commit

src/rvx0_apb.sv

@@ -0,0 +1,25 @@
+/* verilator lint_off UNOPTFLAT */
+
+interface rvx0_apb ();
+    logic pclk;
+    logic prstn;
+    logic [31:0] paddr;
+    logic pwrite;
+    logic penable;
+    logic [31:0] pwdata;
+    logic psel;
+
+    logic pready;
+    logic [31:0] prdata;
+    logic pslverr;
+
+    modport master (
+        input pready, prdata, pslverr,
+        output pclk, prstn, paddr, penable, pwrite, pwdata
+    );
+
+    modport slave (
+        input pclk, prstn, paddr, pwrite, penable, pwdata, psel,
+        output pready, prdata, pslverr
+    );
+endinterface