npc: basic architecture implementation

npc/csrc_nvboard/Flow/main.cpp

@@ -0,0 +1,12 @@
+#include <verilated.h>
+#include <verilated_vcd_c.h>
+// #include <nvboard.h>
+#include <VFlow.h>
+
+const int MAX_SIM_TIME=100;
+
+// void nvboard_bind_all_pins(VFLow* top);
+
+int main(int argc, char **argv, char **env) {
+    return 0;
+}