trying arbiter

dataflow_neuro/cell_lib_async.act

@@ -478,6 +478,24 @@ namespace tmpl {
                 p_n_mode <- 1;
             y {-1}}
         }
+        export defcell arbiter_handshake(bool in1_r, in1_a,in2_r, in2_a out_r, out_a)
+        {
+          bool _u, _v;
+          A_2C_B_X1 cel1(.c1 = out_a,.c2 = v,.y = in1_a);
+          A_2C_B_X1 cel2(.c1 = out_a,.c2 = u,.y = in2_a);
+          prs {
+           [keeper=0]  in1_v &  _v -> _u-
+           [keeper=0] ~in1_v  | ~_v  -> _u+
+           [keeper=0]  in2_v &  _u -> _v-
+           [keeper=0] ~in2_v  | ~_u  -> _v+
+           [keeper=0] ~_u | ~in2_a  => u+
+           [keeper=0] ~_v | ~in1_a  => v+
+           [keeper=0] u | v  => out_r 
+          }
+          spec {
+            mk_excllo(_u, _v)
+          }
+        }
         }}