      end</pre>
<pre style="margin:0; padding:0 "> 126:       // waiting for ack from receiver</pre>
<pre style="background-color: #C0C0C0; margin:0; padding:0 "> 127:       HsPhase1: begin</pre>
<pre style="background-color: #C0C0C0; margin:0; padding:0 "> 128:         if (ack_level) begin</pre>
<pre style="background-color: #C0C0C0; margin:0; padding:0 "> 129:           state_d  = HsPhase2;</pre>
<pre style="background-color: #C0C0C0; margin:0; padding:0 "> 130:         end else begin</pre>
<pre style="ba