Simplified the I/O registration function, added support for Panel debugger messages, and added some new Panel behavior on the RESET instruction

devices/pdp11/machine/1170/panel/debugger/xxdp/README.md

@@ -0,0 +1,19 @@
+---
+layout: page
+title: PDP-11/70 with Front Panel and Debugger
+permalink: /devices/pdp11/machine/1170/panel/debugger/xxdp/
+machines:
+  - id: test1170
+    type: pdp11
+    debugger: true
+    autoStart: true
+    autoMount:
+      RL0:
+        path: http://archive.pcjs.org/disks/dec/rl02k/RL02K-XXDP.json
+---
+
+{% include machine.html id="test1170" %}
+
+Other interesting things to know about this machine:
+
+* It includes an [M9312 ROM](/devices/pdp11/rom/M9312/) at address 165000.  The exact ROM is [23-616F1](/devices/pdp11/rom/M9312/23-616F1.txt).