Attempted to clean up mapUnibus() and bus-related faults; how well or ill-advised these changes are remains to be seen

devices/pdp11/machine/1120/monitor/debugger/README.md

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+---
+layout: page
+title: PDP-11/20 Boot Monitor with Debugger
+permalink: /devices/pdp11/machine/1120/monitor/debugger/
+machines:
+  - id: test1120
+    type: pdp11
+    debugger: true
+---
+
+PDP-11/20 Boot Monitor (with Debugger)
+--------------------------------------
+
+The machine below pre-loads the [PDP-11 Boot Monitor](/apps/pdp11/boot/monitor/) into RAM:
+
+	<ram id="ram" addr="0x0000" size="0xE000" file="/apps/pdp11/boot/monitor/PDPJSMON.json" load="0xC000" exec="0xC000"/>
+
+{% include machine.html id="test1120" %}

devices/pdp11/machine/1120/monitor/debugger/machine.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<?xml-stylesheet type="text/xsl" href="/versions/pdpjs/1.30.2/machine.xsl"?>
+<machine id="test1120" class="pdp11" border="1" pos="center" background="#FAEBD7">
+	<name pos="center">PDP-11/20 Boot Monitor with 56Kb and Debugger</name>
+	<computer id="computer" busWidth="16"/>
+	<cpu id="cpu" model="1120" cycles="6666667"/>
+	<ram id="ram" addr="0x0000" size="0xE000" file="/apps/pdp11/boot/monitor/PDPJSMON.json"/>
+	<device id="default" type="default"/>
+	<device id="pc11" type="pc11"/>
+	<serial id="dl11" adapter="0" binding="print"/>
+	<panel ref="/devices/pdp11/panel/test/debugger/terminal.xml"/>
+	<debugger id="debugger" base="8" messages="" commands=""/>
+</machine>