DEC's "TRAP TEST" finally passes (and I learned a lot about PDP-11 opcode idiosyncrasies in the process)

modules/pdp11/lib/serialport.js

@@ -312,6 +312,8 @@ SerialPortPDP11.prototype.initBus = function(cmp, bus, cpu, dbg)
     });
 
     bus.addIOTable(this, SerialPortPDP11.UNIBUS_IOTABLE);
+    bus.addResetHandler(this.reset.bind(this));
+
     this.setReady();
 };
 
@@ -460,7 +462,7 @@ SerialPortPDP11.prototype.initState = function(data)
     this.rbuf = 0;
     this.rcsr = 0;
     this.xcsr = PDP11.DL11.XCSR.READY;
-    this.abReceive = [];
+    // this.abReceive = [];
     return true;
 };