From cb61219e2286123408b9b5520f7bdfea101a6e0a Mon Sep 17 00:00:00 2001
From: Jeff Parsons <jeff@pcjs.org>
Date: Tue, 6 Dec 2016 15:00:19 -0800
Subject: [PATCH] Added support for virtual read/write breakpoints; physical
 read/write breakpoints are still used if the specified address is physical
 (preceded by %) or is outside the virtual 16-bit address range

---
 modules/pdp11/lib/cpu.js           |  14 +-
 modules/pdp11/lib/cpustate.js      | 233 +++++++++--
 modules/pdp11/lib/debugger.js      |  77 +++-
 versions/pdpjs/1.30.6/pdp11-dbg.js | 636 +++++++++++++++--------------
 versions/pdpjs/1.30.6/pdp11.js     | 426 +++++++++----------
 5 files changed, 817 insertions(+), 569 deletions(-)

diff --git a/modules/pdp11/lib/cpu.js b/modules/pdp11/lib/cpu.js
index e8596cbff..ce2caff56 100644
--- a/modules/pdp11/lib/cpu.js
+++ b/modules/pdp11/lib/cpu.js
@@ -189,15 +189,25 @@ CPUPDP11.prototype.initBus = function(cmp, bus, cpu, dbg)
     this.bus = bus;
     this.dbg = dbg;
     this.panel = cmp.panel;
-
     for (var i = 0; i < CPUPDP11.BUTTONS.length; i++) {
         var control = this.bindings[CPUPDP11.BUTTONS[i]];
         if (control) this.cmp.setBinding(null, CPUPDP11.BUTTONS[i], control);
     }
-
+    this.init();
     this.setReady();
 };
 
+/**
+ * init()
+ *
+ * Stub for initialization call (overridden by the CPUStatePDP11 component).
+ *
+ * @this {CPUPDP11}
+ */
+CPUPDP11.prototype.init = function()
+{
+};
+
 /**
  * finish()
  *
diff --git a/modules/pdp11/lib/cpustate.js b/modules/pdp11/lib/cpustate.js
index a1a6e66c5..1a1ea9e36 100644
--- a/modules/pdp11/lib/cpustate.js
+++ b/modules/pdp11/lib/cpustate.js
@@ -159,11 +159,30 @@ CPUStatePDP11.prototype.initProcessor = function()
     this.aIRQs = [];            // list of all IRQs, active or not (to be used for auto-configuration)
 
     this.flags.complete = false;
+
+    this.nReadBreaks = this.nWriteBreaks = 0;
+};
+
+/**
+ * init()
+ *
+ * Called once the Bus has been initialized.
+ *
+ * @this {CPUStatePDP11}
+ */
+CPUStatePDP11.prototype.init = function()
+{
+    this.getByteDirect = this.bus.getByte.bind(this.bus);
+    this.getWordDirect = this.bus.getWord.bind(this.bus);
+    this.setByteDirect = this.bus.setByte.bind(this.bus);
+    this.setWordDirect = this.bus.setWord.bind(this.bus);
 };
 
 /**
  * finish()
  *
+ * Called before the CPU is powered up.
+ *
  * TODO: This function simply ensures that we don't leave any IRQs installed with unresolved floating
  * (negative) vectors; however, properly assigning vectors according to device type (ie, auto-configuration)
  * is an exercise left for another day.
@@ -329,26 +348,35 @@ CPUStatePDP11.prototype.getMMUState = function()
  * Define handlers and DSPACE setting appropriate for the current MMU mode, in order to eliminate unnecessary calls
  * to mapVirtualToPhysical().
  *
- * TODO: We could further optimize readWord(), splitting it into readWordFromDSpace() and readWordFromISpace(),
- * eliminating the need to OR the addrDSpace bit when we know that bit is zero, but that's a pretty tiny optimization.
- *
  * @this {CPUStatePDP11}
  */
 CPUStatePDP11.prototype.setMemoryAccess = function()
 {
+    this.getByte = this.getByteDirect;
+    this.getWord = this.getWordDirect;
+    this.setByte = this.setByteDirect;
+    this.setWord = this.setWordDirect;
+    if (this.nReadBreaks) {
+        this.getByte = this.getByteChecked;
+        this.getWord = this.getWordChecked;
+    }
+    if (this.nWriteBreaks) {
+        this.setByte = this.setByteChecked;
+        this.setWord = this.setWordChecked;
+    }
     if (this.mmuEnable) {
         this.addrDSpace = PDP11.ACCESS.DSPACE;
         this.addrIOPage = (this.regMMR3 & PDP11.MMR3.MMU_22BIT)? BusPDP11.IOPAGE_22BIT : BusPDP11.IOPAGE_18BIT;
         this.getAddr = this.getVirtualAddrByMode;
-        this.readWord = this.readWordFromVirtual;
-        this.writeWord = this.writeWordToVirtual;
+        this.readWord = this.nReadBreaks? this.readWordFromVirtualChecked : this.readWordFromVirtual;
+        this.writeWord = this.nWriteBreaks? this.writeWordToVirtualChecked : this.writeWordToVirtual;
         this.bus.setIOPageRange((this.regMMR3 & PDP11.MMR3.MMU_22BIT)? 22 : 18);
     } else {
         this.addrDSpace = 0;
         this.addrIOPage = BusPDP11.IOPAGE_16BIT;
         this.getAddr = this.getPhysicalAddrByMode;
-        this.readWord = this.readWordFromPhysical;
-        this.writeWord = this.writeWordToPhysical;
+        this.readWord = this.nReadBreaks? this.readWordFromPhysicalChecked : this.readWordFromPhysical;
+        this.writeWord = this.nWriteBreaks? this.writeWordToPhysicalChecked : this.writeWordToPhysical;
         this.bus.setIOPageRange(16);
     }
 };
@@ -2073,6 +2101,66 @@ CPUStatePDP11.prototype.checkStackLimit1145 = function(access, step, addr)
     }
 };
 
+/**
+ * getByteChecked(addr)
+ *
+ * @this {CPUStatePDP11}
+ * @param {number} addr
+ * @return {number}
+ */
+CPUStatePDP11.prototype.getByteChecked = function(addr)
+{
+    if (DEBUGGER && this.dbg) {
+        this.dbg.checkMemoryRead(addr, 1);
+    }
+    return this.getByteDirect(addr);
+};
+
+/**
+ * getWordChecked(addr)
+ *
+ * @this {CPUStatePDP11}
+ * @param {number} addr
+ * @return {number}
+ */
+CPUStatePDP11.prototype.getWordChecked = function(addr)
+{
+    if (DEBUGGER && this.dbg) {
+        this.dbg.checkMemoryRead(addr, 2);
+    }
+    return this.getWordDirect(addr);
+};
+
+/**
+ * setByteChecked(addr, data)
+ *
+ * @this {CPUStatePDP11}
+ * @param {number} addr
+ * @param {number} data
+ */
+CPUStatePDP11.prototype.setByteChecked = function(addr, data)
+{
+    if (DEBUGGER && this.dbg) {
+        this.dbg.checkMemoryWrite(addr, 1);
+    }
+    this.setByteDirect(addr, data);
+};
+
+/**
+ * setWordChecked(addr, data)
+ *
+ * @this {CPUStatePDP11}
+ * @param {number} addr
+ * @param {number} data
+ */
+CPUStatePDP11.prototype.setWordChecked = function(addr, data)
+{
+    if (DEBUGGER && this.dbg) {
+        this.dbg.checkMemoryWrite(addr, 2);
+    }
+    this.setWordDirect(addr, data);
+};
+
 /**
  * getByteSafe(addr)
  *
@@ -2102,7 +2190,7 @@ CPUStatePDP11.prototype.getByteSafe = function(addr)
 CPUStatePDP11.prototype.getWordSafe = function(addr)
 {
     this.nDisableTraps++;
-    var w = this.readWord(addr);
+    var w = this.bus.getWord(this.mapVirtualToPhysical(addr, PDP11.ACCESS.READ_WORD));
     this.nDisableTraps--;
     return w;
 };
@@ -2135,10 +2223,42 @@ CPUStatePDP11.prototype.setByteSafe = function(addr, data)
 CPUStatePDP11.prototype.setWordSafe = function(addr, data)
 {
     this.nDisableTraps++;
-    this.writeWord(addr, data);
+    this.bus.setWord(this.mapVirtualToPhysical(addr, PDP11.ACCESS.WRITE_WORD), data);
     this.nDisableTraps--;
 };
 
+/**
+ * addMemBreak(addr, fWrite)
+ *
+ * @this {CPUStatePDP11}
+ * @param {number} addr
+ * @param {boolean} fWrite is true for a memory write breakpoint, false for a memory read breakpoint
+ */
+CPUStatePDP11.prototype.addMemBreak = function(addr, fWrite)
+{
+    if (DEBUGGER) {
+        var nBreaks = fWrite? this.nWriteBreaks++ : this.nReadBreaks++;
+        this.assert(nBreaks >= 0);
+        if (!nBreaks) this.setMemoryAccess();
+    }
+};
+
+/**
+ * removeMemBreak(addr, fWrite)
+ *
+ * @this {CPUStatePDP11}
+ * @param {number} addr
+ * @param {boolean} fWrite is true for a memory write breakpoint, false for a memory read breakpoint
+ */
+CPUStatePDP11.prototype.removeMemBreak = function(addr, fWrite)
+{
+    if (DEBUGGER) {
+        var nBreaks = fWrite? --this.nWriteBreaks : --this.nReadBreaks;
+        this.assert(nBreaks >= 0);
+        if (!nBreaks) this.setMemoryAccess();
+    }
+};
+
 /**
  * getPhysicalAddrByMode(mode, reg, access)
  *
@@ -2152,9 +2272,7 @@ CPUStatePDP11.prototype.setWordSafe = function(addr, data)
  */
 CPUStatePDP11.prototype.getPhysicalAddrByMode = function(mode, reg, access)
 {
-    var addr = this.getAddrByMode(mode, reg, access);
-    if (addr >= BusPDP11.UNIBUS_22BIT) addr = this.mapUnibus(addr);
-    return addr;
+    return this.getAddrByMode(mode, reg, access);
 };
 
 /**
@@ -2184,10 +2302,26 @@ CPUStatePDP11.prototype.getVirtualAddrByMode = function(mode, reg, access)
  */
 CPUStatePDP11.prototype.readWordFromPhysical = function(addr)
 {
-    if (addr >= BusPDP11.UNIBUS_22BIT) addr = this.mapUnibus(addr);
     return this.bus.getWord(this.addrLast = addr);
 };
 
+/**
+ * readWordFromPhysicalChecked(addr)
+ *
+ * This is a handler set up by setMemoryAccess().  All calls should go through readWord().
+ *
+ * @this {CPUStatePDP11}
+ * @param {number} addr
+ * @return {number}
+ */
+CPUStatePDP11.prototype.readWordFromPhysicalChecked = function(addr)
+{
+    if (DEBUGGER && this.dbg) {
+        this.dbg.checkMemoryRead(addr, 2);
+    }
+    return this.readWordFromPhysical(addr);
+};
+
 /**
  * readWordFromVirtual(addrVirtual)
  *
@@ -2202,6 +2336,23 @@ CPUStatePDP11.prototype.readWordFromVirtual = function(addrVirtual)
     return this.bus.getWord(this.addrLast = this.mapVirtualToPhysical(addrVirtual, PDP11.ACCESS.READ_WORD));
 };
 
+/**
+ * readWordFromVirtualChecked(addrVirtual)
+ *
+ * This is a handler set up by setMemoryAccess().  All calls should go through readWord().
+ *
+ * @this {CPUStatePDP11}
+ * @param {number} addrVirtual (input address is 17 bit (I&D))
+ * @return {number}
+ */
+CPUStatePDP11.prototype.readWordFromVirtualChecked = function(addrVirtual)
+{
+    if (DEBUGGER && this.dbg) {
+        this.dbg.checkMemoryRead(addrVirtual, 2);
+    }
+    return this.readWordFromVirtual(addrVirtual);
+};
+
 /**
  * writeWordToPhysical(addr, data)
  *
@@ -2213,11 +2364,26 @@ CPUStatePDP11.prototype.readWordFromVirtual = function(addrVirtual)
  */
 CPUStatePDP11.prototype.writeWordToPhysical = function(addr, data)
 {
-    if (addr >= BusPDP11.UNIBUS_22BIT) addr = this.mapUnibus(addr);
-    this.assert(!(data & ~0xffff));
     this.bus.setWord(this.addrLast = addr, data);
 };
 
+/**
+ * writeWordToPhysicalChecked(addr, data)
+ *
+ * This is a handler set up by setMemoryAccess().  All calls should go through writeWord().
+ *
+ * @this {CPUStatePDP11}
+ * @param {number} addr
+ * @param {number} data
+ */
+CPUStatePDP11.prototype.writeWordToPhysicalChecked = function(addr, data)
+{
+    if (DEBUGGER && this.dbg) {
+        this.dbg.checkMemoryWrite(addr, 2);
+    }
+    this.writeWordToPhysical(addr, data);
+};
+
 /**
  * writeWordToVirtual(addrVirtual, data)
  *
@@ -2232,6 +2398,23 @@ CPUStatePDP11.prototype.writeWordToVirtual = function(addrVirtual, data)
     this.bus.setWord(this.addrLast = this.mapVirtualToPhysical(addrVirtual, PDP11.ACCESS.WRITE_WORD), data);
 };
 
+/**
+ * writeWordToVirtualChecked(addrVirtual, data)
+ *
+ * This is a handler set up by setMemoryAccess().  All calls should go through writeWord().
+ *
+ * @this {CPUStatePDP11}
+ * @param {number} addrVirtual (input address is 17 bit (I&D))
+ * @param {number} data
+ */
+CPUStatePDP11.prototype.writeWordToVirtualChecked = function(addrVirtual, data)
+{
+    if (DEBUGGER && this.dbg) {
+        this.dbg.checkMemoryWrite(addrVirtual, 2);
+    }
+    this.writeWordToVirtual(addrVirtual, data);
+};
+
 /**
  * readWordFromPrevSpace(opCode, access)
  *
@@ -2287,14 +2470,14 @@ CPUStatePDP11.prototype.writeWordToPrevSpace = function(opCode, access, data)
         if (!(access & PDP11.ACCESS.DSPACE)) addr &= 0xffff;
         /*
          * TODO: Consider replacing the following code with writeWord(), by adding optional pswMode
-         * parameters for each of the discrete mapVirtualToPhysical() and bus.setWord() operations, because
+         * parameters for each of the discrete mapVirtualToPhysical() and setWord() operations, because
          * as it stands, this is the only remaining call to mapVirtualToPhysical() outside of our
          * setMemoryAccess() handlers.
          */
         this.pswMode = (this.regPSW >> 12) & 3;
         addr = this.mapVirtualToPhysical(addr | (access & PDP11.ACCESS.DSPACE), PDP11.ACCESS.WRITE);
         this.pswMode = (this.regPSW >> 14) & 3;
-        this.bus.setWord(addr, data);
+        this.setWord(addr, data);
     }
 };
 
@@ -2319,7 +2502,7 @@ CPUStatePDP11.prototype.readSrcByte = function(opCode)
     if (!mode) {
         result = this.regsGen[reg + this.offRegSrc] & this.maskRegSrcByte;
     } else {
-        result = this.bus.getByte(this.getAddr(mode, reg, PDP11.ACCESS.READ_BYTE));
+        result = this.getByte(this.getAddr(mode, reg, PDP11.ACCESS.READ_BYTE));
     }
     return result;
 };
@@ -2361,7 +2544,7 @@ CPUStatePDP11.prototype.readSrcWord = function(opCode)
     if (!mode) {
         result = this.regsGen[reg + this.offRegSrc];
     } else {
-        result = this.bus.getWord(this.getAddr(mode, reg, PDP11.ACCESS.READ_WORD));
+        result = this.getWord(this.getAddr(mode, reg, PDP11.ACCESS.READ_WORD));
     }
     return result;
 };
@@ -2395,7 +2578,7 @@ CPUStatePDP11.prototype.readDstByte = function(opCode)
     if (!mode) {
         result = this.regsGen[reg] & 0xff;
     } else {
-        result = this.bus.getByte(this.getAddr(mode, reg, PDP11.ACCESS.READ_BYTE));
+        result = this.getByte(this.getAddr(mode, reg, PDP11.ACCESS.READ_BYTE));
     }
     return result;
 };
@@ -2415,7 +2598,7 @@ CPUStatePDP11.prototype.readDstWord = function(opCode)
     if (!mode) {
         result = this.regsGen[reg];
     } else {
-        result = this.bus.getWord(this.getAddr(mode, reg, PDP11.ACCESS.READ_WORD));
+        result = this.getWord(this.getAddr(mode, reg, PDP11.ACCESS.READ_WORD));
     }
     return result;
 };
@@ -2441,7 +2624,7 @@ CPUStatePDP11.prototype.updateDstByte = function(opCode, data, fnOp)
     } else {
         var addr = this.dstAddr = this.getAddr(mode, reg, PDP11.ACCESS.UPDATE_BYTE);
         data = (data < 0? (this.regsGen[-data-1] & 0xff) : data);
-        this.bus.setByte(addr, fnOp.call(this, data, this.bus.getByte(addr)));
+        this.setByte(addr, fnOp.call(this, data, this.getByte(addr)));
         if (addr & 1) this.nStepCycles--;
     }
 };
@@ -2467,7 +2650,7 @@ CPUStatePDP11.prototype.updateDstWord = function(opCode, data, fnOp)
         this.regsGen[reg] = fnOp.call(this, data < 0? this.regsGen[-data-1] : data, this.regsGen[reg]);
     } else {
         var addr = this.getAddr(mode, reg, PDP11.ACCESS.UPDATE_WORD);
-        this.bus.setWord(addr, fnOp.call(this, data < 0? this.regsGen[-data-1] : data, this.bus.getWord(addr)));
+        this.setWord(addr, fnOp.call(this, data < 0? this.regsGen[-data-1] : data, this.getWord(addr)));
     }
 };
 
@@ -2505,7 +2688,7 @@ CPUStatePDP11.prototype.writeDstByte = function(opCode, data, writeFlags, fnFlag
     } else {
         var addr = this.getAddr(mode, reg, PDP11.ACCESS.WRITE_BYTE);
         fnFlags.call(this, (data = data < 0? (this.regsGen[-data-1] & 0xff) : data) << 8);
-        this.bus.setByte(addr, data);
+        this.setByte(addr, data);
         if (addr & 1) this.nStepCycles--;
     }
 };
@@ -2533,7 +2716,7 @@ CPUStatePDP11.prototype.writeDstWord = function(opCode, data, fnFlags)
     } else {
         var addr = this.getAddr(mode, reg, PDP11.ACCESS.WRITE_WORD);
         fnFlags.call(this, (data = data < 0? this.regsGen[-data-1] : data));
-        this.bus.setWord(addr, data);
+        this.setWord(addr, data);
     }
 };
 
diff --git a/modules/pdp11/lib/debugger.js b/modules/pdp11/lib/debugger.js
index 96430b407..96fc7d1bb 100644
--- a/modules/pdp11/lib/debugger.js
+++ b/modules/pdp11/lib/debugger.js
@@ -895,7 +895,7 @@ if (DEBUGGER) {
      */
     DebuggerPDP11.prototype.toStrAddr = function(dbgAddr)
     {
-        return this.toStrOffset(dbgAddr.addr);
+        return (dbgAddr.fPhysical? '%' : '') + this.toStrOffset(dbgAddr.addr);
     };
 
     /**
@@ -943,8 +943,8 @@ if (DEBUGGER) {
             n = 1;
         }
 
-        this.println("blockid   physical   blockaddr   used    size    type");
-        this.println("--------  ---------  ----------  ------  ------  ----");
+        this.println("blockid   physical   blockaddr  used    size    type");
+        this.println("--------  ---------  ---------  ------  ------  ----");
 
         var typePrev = -1, cPrev = 0;
         while (n--) {
@@ -955,7 +955,7 @@ if (DEBUGGER) {
                 typePrev = block.type;
                 var sType = MemoryPDP11.TYPE_NAMES[typePrev];
                 if (block) {
-                    this.println(str.toHex(block.id, 8) + "  %" + str.toHex(i << this.bus.nBlockShift, 8) + "  %%" + str.toHex(block.addr, 8) + "  " + str.toHexWord(block.used) + "  " + str.toHexWord(block.size) + "  " + sType);
+                    this.println(str.toHex(block.id, 8) + "  %" + str.toHex(i << this.bus.nBlockShift, 8) + "  %" + str.toHex(block.addr, 8) + "  " + str.toHexWord(block.used) + "  " + str.toHexWord(block.size) + "  " + sType);
                 }
                 if (typePrev != MemoryPDP11.TYPE.NONE) typePrev = -1;
                 cPrev = 0;
@@ -1731,12 +1731,40 @@ if (DEBUGGER) {
         var cpu = this.cpu;
 
         /*
-         * Since opHalt() will rewind the PC on a HALT, purely for our debugging benefit, we must compensate
-         * for that here by skipping over the HALT if/when the machine starts up again.
+         * If opHalt() calls our stopInstruction() function, it will effectively rewind the PC back to the HALT,
+         * purely for our debugging benefit, so we must compensate for that here by advancing the PC past the HALT
+         * when the machine starts up again.
          */
         if (!nState) {
             opCode = this.cpu.getWordSafe(addr);
-            if (opCode == PDP11.OPCODE.HALT) {
+            /*
+             * We have to be careful about this HALT-skipping code, because as fate would have it, I inadvertently
+             * stopped the following diagnostic with a breakpoint *on* a HALT instruction:
+             *
+             *      .R EKBEE1
+             *      EKBEE1.BIC
+             *
+             *      CEKBEE0 11/70 MEM MGMT
+             *
+             *      CPU UNDER TEST FOUND TO BE A KB11-CM
+             *      bp 033330 hit
+             *      stopped (28339757 instructions, 123994176 cycles, 19177 ms, 6465775 hz)
+             *      R0=140000 R1=033330 R2=100143 R3=133260 R4=000000 R5=177700
+             *      SP=000600 PC=033330 PS=140000 IR=000000 SL=000377 T0 N0 Z0 V0 C0
+             *      033330: 000000                 HALT
+             *
+             * Since we haven't executed the HALT yet, it would be wrong (and would cause a diagnostic failure) to
+             * skip over it.  In this particular case, the PDR for the address of the HALT instruction was invalid,
+             * so the HALT gets fetched but not executed.
+             *
+             * My first thought was that maybe we need to probe the address more thoroughly (getWordSafe() does
+             * not), but it should be sufficient to simply confirm that the PC of the last opcode executed matches
+             * the addr of this HALT.
+             *
+             * Yes, I could save myself this grief by eliminating these PC hacks, both here and in stopInstruction(),
+             * but I still think it's a useful debugging aid.
+             */
+            if (opCode == PDP11.OPCODE.HALT && this.cpu.getLastPC() == addr) {
                 addr = this.cpu.advancePC(2);
             }
         }
@@ -1873,19 +1901,29 @@ if (DEBUGGER) {
      */
     DebuggerPDP11.prototype.clearBreakpoints = function()
     {
-        var i, dbgAddr;
+        var i, dbgAddr, addr;
         this.aBreakExec = ["bp"];
         if (this.aBreakRead !== undefined) {
             for (i = 1; i < this.aBreakRead.length; i++) {
                 dbgAddr = this.aBreakRead[i];
-                this.bus.removeMemBreak(this.getAddr(dbgAddr), false);
+                addr = this.getAddr(dbgAddr);
+                if (!dbgAddr.fPhysical) {
+                    this.cpu.removeMemBreak(addr, false);
+                } else {
+                    this.bus.removeMemBreak(addr, false);
+                }
             }
         }
         this.aBreakRead = ["br"];
         if (this.aBreakWrite !== undefined) {
             for (i = 1; i < this.aBreakWrite.length; i++) {
                 dbgAddr = this.aBreakWrite[i];
-                this.bus.removeMemBreak(this.getAddr(dbgAddr), true);
+                addr = this.getAddr(dbgAddr);
+                if (!dbgAddr.fPhysical) {
+                    this.cpu.removeMemBreak(addr, true);
+                } else {
+                    this.bus.removeMemBreak(addr, true);
+                }
             }
         }
         this.aBreakWrite = ["bw"];
@@ -1947,7 +1985,17 @@ if (DEBUGGER) {
                 this.println("invalid address: " + this.toStrAddr(dbgAddr));
                 fSuccess = false;
             } else {
-                this.bus.addMemBreak(addr, aBreak == this.aBreakWrite);
+                var fWrite = (aBreak == this.aBreakWrite);
+                /*
+                 * We automatically promote any read/write breakpoint address to fPhysical if it's
+                 * outside the 16-bit virtual address range.
+                 */
+                if (addr > 0xffff) dbgAddr.fPhysical = true;
+                if (!dbgAddr.fPhysical) {
+                    this.cpu.addMemBreak(addr, fWrite);
+                } else {
+                    this.bus.addMemBreak(addr, fWrite);
+                }
             }
         }
 
@@ -1993,7 +2041,12 @@ if (DEBUGGER) {
                         }
                         aBreak.splice(i, 1);
                         if (aBreak != this.aBreakExec) {
-                            this.bus.removeMemBreak(addr, aBreak == this.aBreakWrite);
+                            var fWrite = (aBreak == this.aBreakWrite);
+                            if (!dbgAddrBreak.fPhysical) {
+                                this.cpu.removeMemBreak(addr, fWrite);
+                            } else {
+                                this.bus.removeMemBreak(addr, fWrite);
+                            }
                         }
                         /*
                          * We'll mirror the logic in addBreakpoint() and leave the history buffer alone if this
diff --git a/versions/pdpjs/1.30.6/pdp11-dbg.js b/versions/pdpjs/1.30.6/pdp11-dbg.js
index 78c50ba4a..f059d4caa 100644
--- a/versions/pdpjs/1.30.6/pdp11-dbg.js
+++ b/versions/pdpjs/1.30.6/pdp11-dbg.js
@@ -32,333 +32,335 @@
  http://pcjs.org/modules/pdp11/lib/computer.js (C) Jeff Parsons 2012-2016
  http://pcjs.org/modules/shared/lib/state.js (C) Jeff Parsons 2012-2016
 */
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-a||1024<=this.F.length)this.i(this.F),this.F="";10!=a&&(this.F+=String.fromCharCode(a))}Pc(this.b,this.Ba,1E3/Math.round(this.wa/10));this.g&=-129};var Zg={},Xg=(Zg[65392]=[null,null,Vg.prototype.ee,Vg.prototype.df,"RCSR"],Zg[65394]=[null,null,Vg.prototype.de,Vg.prototype.cf,"RBUF"],Zg[65396]=[null,null,Vg.prototype.Ge,Vg.prototype.Hf,"XCSR"],Zg[65398]=[null,null,Vg.prototype.Fe,Vg.prototype.Gf,"XBUF"],Zg);
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-b+" changes applied)";b=-1;break}if(this.g){c="unable to modify write-protected disk";b=-1;break}e=g[f++];f=g[f++];g=e+f.length;if(h=this.b[h][l][m]){for(l=h.data.length;l<e;)h.data[l++]=h.pattern;l=0;h.ab=e;for(h.Ra=f.length;e<g;)h.data[e++]=f[l++];b++}}}0>b&&-2!=b&&this.controller.M("Unable to restore disk '"+this.Xa+": "+c);return b};
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-function Wh(a,b,c,d){var e=a.D.listDrives,e=e&&na(e.value,10);if(void 0===e||0>e||e>=a.g.length)a.M("Unable to load the selected drive");else if(c)if("?"==c)a.M('Use "Choose File" and "Mount" to select and load a local disk.');else{if("??"==c){c=window.prompt("Enter the URL of a remote disk image.","")||"";if(!c)return;b=w(c);a.status("Attempting to load "+c+' as "'+b+'"')}bi(a,e,b,c,!1,d)}else ai(a,e)}
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-function Xh(a,b){var c=0;b||(b=[]);a.P=b[c++]||2496;a.v=b[c++]||0;a.f=b[c++]||128;a.I=b[c++]||0;a.H=b[c++]||0;a.A=b[c++]||0;a.N=b[c]||0;for(b=0;b<a.g.length;b++){var d=a.g[b];void 0===d&&(d=a.g[b]={});c=a;d.Bb=b;d.name=c.mb;d.zb=d.ib=!1;d.fa=203;d.ka=2;d.ia=12;d.Ca=512;d.dc=!0;d.od=0;d.md=0;d.nc=1;d.Mc=d.ia;d.rc=d.Ca;d.yd=0;d.Je=null;d.qa||(d.Pa="");d.status=2368}return!0}
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-k.Bc=function(a,b,c,d,e,f,g,h,l){var m=0;a=a.qa;var n=null,r;a||(m=128,e=0);for(;e--;){if(!n){n=a.seek(b,c,d+1);if(!n){m=4096;break}r=0}var u,t;if(0>(u=a.read(n,r++))||0>(t=a.read(n,r++))){m=32;break}if(!h&&($b(this.w,f,u|t<<8),Mc(this.w))){m=1024;break}f+=g;if(r>=a.Ca&&(n=null,++d>=a.ia&&(d=0,++c>=a.ka&&(c=0,++b>=a.fa)))){m=64;break}}return l?l(m,b,c,d,e,f):m};
-k.dd=function(a,b,c,d,e,f,g,h,l){var m=0;a=a.qa;var n=null,r;a||(m=128,e=0);for(;e--;){var u=ac(this.w,f);if(Mc(this.w)){m=1024;break}f+=g;if(!n){n=a.seek(b,c,d+1,!0);if(!n){m=4096;break}r=0}if(h){var t,C;if(0>(t=a.read(n,r++))||0>(C=a.read(n,r++))){m=32;break}if(u!=(t|C<<8)){m=1;break}}else if(!a.write(n,r++,u&255)||!a.write(n,r++,u>>8)){m=32;break}if(r>=a.Ca&&(n=null,++d>=a.ia&&(d=0,++c>=a.ka&&(c=0,++b>=a.fa)))){m=64;break}}return l?l(m,b,c,d,e,f):m};k.je=function(){return this.P};k.jf=function(){};
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-k.ff=function(a){this.f=this.f&-3968|a&3967;if(this.f&1){a=!0;var b,c="",d=(this.A&57344)>>13,e=this.g[d],f,g,h,l,m,n;this.f&=-129;var r=(this.f&14)>>1;switch(r){case 0:K(this)&&I(this,this.type+": CRESET("+d+")",!0);this.v=0;this.f=128;this.A=0;break;case 4:f=(this.A&8160)>>5;K(this)&&I(this,this.type+": SEEK("+f+")",!0);f>=e.fa&&(this.v|=32832,this.f|=49152);break;case 5:c="RCHK";case 2:c||(c="READ"),b=this.Bc;case 3:c||(c="WCHK");case 1:c||(c="WRITE");b||(b=this.dd);f=(this.A&8160)>>5;g=(this.A&
-16)>>4;h=this.A&15;l=65536-this.I&65535;m=(this.f&48)<<12|this.H;n=this.f&2048?0:2;K(this)&&I(this,this.type+": "+c+"("+f+":"+g+":"+h+") "+p(m)+"-"+p(m+(l-1<<1)),!0,!0);if(f>=e.fa){this.v|=32832;this.f|=49152;break}if(h>=e.ia){this.v|=32800;this.f|=49152;break}a=b.call(this,e,f,g,h,l,m,n,3<=r,this.bd.bind(this));break;case 6:K(this)&&I(this,this.type+": DRESET("+d+")");break;default:K(this)&&I(this,this.type+": UNSUPPORTED("+r+")")}this.P=e.status|(e.qa?128:0)|d<<13|this.A&15;this.v&32768&&K(this)&&
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-k.za=function(a,b,c){var d=this;switch(b){case "listDisks":return this.D[b]=c,c.onchange=function(){var a=d.D.descDisk,b=c.options&&c.options[c.selectedIndex];if(a&&b){var g={};if(b=b.getAttribute("data-value"))try{g=eval("("+b+")")}catch(h){x("RL11 option error: "+h.message)}b=g.desc;void 0===b&&(b="");g=g.href;void 0!==g&&(b='<a href="'+g+'" target="_blank">'+b+"</a>");a.innerHTML=b}},!0;case "descDisk":case "listDrives":return this.D[b]=c,c.onchange=function(){var a=na(c.value,10);null!=a&&ei(d,
-a)},!0;case "loadDisk":return this.D[b]=c,c.onclick=function(){var a=d.D.listDisks;a&&a.options&&fi(d,a.options[a.selectedIndex].text,a.value)},!0;case "bootDisk":return this.D[b]=c,c.onclick=function(){var a,b=d.D.listDrives,b=b&&na(b.value,10);null==b||0>b||b>=d.g.length||!(a=d.g[b])?d.M("Unable to boot the selected drive"):a.qa?(Rd(d.b,0,!0),(a=d.Cc(a,0,0,0,512,0))&&d.M("Unable to read the boot sector ("+a+")")):d.M("Load a disk into the drive first")},!0;case "saveDisk":if(!this.N){c.parentNode.removeChild(c);
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+function vi(a){var b,c,d;a.f=["bp"];if(a.P)for(b=1;b<a.P.length;b++)c=a.P[b],d=a.aa(c),c.ab?a.w.Kb(d,!1):a.b.Kb(d,!1);a.P=["br"];if(a.K)for(b=1;b<a.K.length;b++)c=a.K[b],d=a.aa(c),c.ab?a.w.Kb(d,!0):a.b.Kb(d,!0);a.K=["bw"];a.$a=0}
+h.Bb=function(a,b,c){var d=!0;c||Qi(this,a,b,!1,!0);if(a!=this.f){var e=this.aa(b);if(-1===e)this.j("invalid address: "+Y(this,b)),d=!1;else{var f=a==this.K;65535<e&&(b.ab=!0);b.ab?this.w.uc(e,f):this.b.uc(e,f)}}d&&(a.push(b),c?b.bb=!0:(Ri(this,a,a.length-1,"set"),wi(this)));return d};
+function Qi(a,b,c,d,e){var f=!1;c=a.aa(c);for(var g=1;g<b.length;g++){var k=b[g];if(c==a.aa(k)&&(!d||k.bb)){f=!0;k.bb||e||Ri(a,b,g,"cleared");b.splice(g,1);b!=a.f&&(b=b==a.K,k.ab?a.w.Kb(c,b):a.b.Kb(c,b));k.bb||wi(a);break}}return f}function Si(a,b){for(var c=1;c<b.length;c++)Ri(a,b,c);return b.length-1}function Ri(a,b,c,d){c=b[c];a.j(b[0]+" "+Y(a,c)+(d?" "+d:c.fd?' "'+c.fd+'"':""))}
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+function Pi(a,b,c,d,e){var f=!1;if(!a.$a++)for(var g=1;!f&&g<d.length;g++){var k=d[g];if(!e||k.bb)for(var l=a.aa(k)&(d==a.f?65535:-1),m=0;m<c;m++)if(b+m==l){var n,f=!0;k.bb&&(Qi(a,d,k,!0),e=!0);if(n=k.wd){for(var f=!1,r=0;r<n.length;r++)if(!Ti(a,n[r],!0)){if(n[r].indexOf("if")){f=!0;break}for(var u=r+1;u<n.length&&n[u].indexOf("else");u++)r++;if(u==n.length){f=!0;break}}a.b.C.U||(f=!0)}if(f){e||Ri(a,d,g,"hit");break}}}a.$a--;return f}
+function Ui(a,b,c,d){var e=X(b.H),f=a.ia(b,2),g,k;for(k in a.zb)if(g=a.zb[k][f&k])break;g||(g=Di);var l=g[0];0<=a.Nb.indexOf(l)&&(g=Di,l=g[0]);var m=k="",n=zi[l],r=g.length-1;l||r||(k=M(a,f));for(l=1;l<=r;l++){var u=g[l];if(void 0!==u){var t;t=a;var C=u,u=b,y="",A=C&61440;if(4096==A)u=u.H+((f&255)<<24>>23)&65535,y=M(t,u);else if(8192==A)u=u.H-((f&63)<<1)&65535,y=M(t,u);else if(12288==A)y=M(t,f&7,1);else if(24576==A)y=M(t,f&63,1);else if(32768==A)y=M(t,f&255,1);else if(A=f&C,C&4032&&(A>>=6,C>>=6),
+C&63){var C=null,D=A&7;switch(A&56){case 0:y=Ki(D);break;case 8:y="@"+Ki(D);C=Vi(t,t.b.u[D]);break;case 16:7>D?y="("+Ki(D)+")+":(A=t.ia(u,2),y="#"+M(t,A,0,!0));break;case 24:7>D?y="@("+Ki(D)+")+":(A=t.ia(u,2),y="@#"+M(t,A,0,!0),C=Vi(t,A));break;case 32:y="-("+Ki(D)+")";break;case 40:y="@-("+Ki(D)+")";break;case 48:A=t.ia(u,2);y=M(t,A,0,!0)+"("+Ki(D)+")";7==D&&(y=M(t,A=A+u.H&65535),C=Vi(t,A));break;case 56:A=t.ia(u,2),y="@"+M(t,A)+"("+Ki(D)+")",7==D&&(y="@"+M(t,A=A+u.H&65535),C=Vi(t,bc(t.b,A)))}C&&
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+function Z(a,b){var c="",d=a.b;if(8>b)c=Ki(b),c+="="+M(a,d.u[b]);else if(13>b)c="A"+(b-8)+"="+M(a,d.hb[b-8]);else if(16<=b&&20>b)c="S"+(b-16)+"="+M(a,d.Na[b-16]);else switch(b){case 20:c="PS="+M(a,gd(d));break;case 21:c="IR="+M(a,d.Ib);break;case 22:c="ER="+M(a,d.qa);break;case 23:c="SL="+M(a,d.mb);break;case 24:c="MMR0="+M(a,ad(d));break;case 25:c="MMR1="+M(a,cd(d));break;case 26:c="MMR2="+M(a,dd(d));break;case 27:c="MMR3="+M(a,d.Ma);break;case 28:a.v&&(c="AR="+M(a,a.v.Da,3));break;case 29:a.v&&
+(c="DR="+M(a,a.v.Hb));break;case 30:a.v&&rc(a.v)&&(c="SR="+M(a,a.v.nb,3))}c&&(c+=" ");return c}function Xi(a,b){var c,d="";for(c=0;6>c;c++)d+=Z(a,c);d=d+"\n"+(Z(a,6)+Z(a,7));d+=Z(a,20)+Z(a,21)+Z(a,23);d+=Wi(a,"T")+Wi(a,"N")+Wi(a,"Z")+Wi(a,"V")+Wi(a,"C");b&&(b=d,c=""+(Z(a,24)+Z(a,25)),c+=Z(a,26)+Z(a,27)+Z(a,22),c=c+"\n"+(Z(a,30)+Z(a,28)+Z(a,29)),d=b+("\n"+c));return d}h.Wc=function(a,b){return a[0]>b[0]?1:a[0]<b[0]?-1:0};
+function Og(a,b,c,d,e){var f=[],g;for(g in e){var k=e[g];"number"==typeof k&&(e[g]=k={o:k});var l=k.o,m=k.a;if(void 0!==l){var n=f,l=[l>>>0,g],r=Ba(n,l,a.Wc);0>r&&n.splice(-(r+1),0,l)}m&&(k.a=m.replace(/''/g,'"'))}a.G.push({gh:b,H:c,Od:d,ka:e,Sc:f})}function Yi(a,b,c){var d=[],e=a.aa(b)>>>0;for(b=0;b<a.G.length;b++){var f=a.G[b],g=f.H>>>0,k=f.Od;if(e>=g&&e<g+k){e=Ba(f.Sc,[e-g],a.Wc);0<=e?Zi(a,b,e,d):c&&(e=~e,Zi(a,b,e-1,d),Zi(a,b,e,d));break}}return d}
+function Zi(a,b,c,d){var e={},f=a.G[b].Sc,g=0,k=null;0<=c&&c<f.length&&(g=f[c][0],k=f[c][1]);k&&(e=a.G[b].ka[k],k="."==k.charAt(0)?null:e.l||k);d.push(k);d.push(g);d.push(e.a);d.push(e.c)}function $i(a,b){var c=b.match(/^\s*([A-Z_]?[A-Z0-9_]*)\s*(=?)\s*(.*)$/i);if(c){if(!c[1])return ti(a)||a.j("no variables"),!0;if(!c[2])return ti(a,c[1]);if(!c[3])return delete a.ba[c[1]],!0;b=pi(a,c[3]);return void 0!==b?(a.ba[c[1]]=b,!0):!1}a.j("invalid assignment:"+b);return!1}
+function aj(a,b,c){var d=null;if(b=Fi(a,b,!0)){a.aa(b);var e=Yi(a,b,!0);if(e.length){var f,g;e[0]&&(g="",(f=b.H-e[1])&&(g=" + "+v(f)),f=e[0]+" ("+M(a,e[1])+")"+g,c&&a.j(f),d=f);4<e.length&&e[4]&&(g="",(f=e[5]-b.H)&&(g=" - "+v(f)),f=e[4]+" ("+M(a,e[5])+")"+g,c&&a.j(f),d||(d=f))}else c&&a.j("no symbols")}return d}
+function Mi(a,b){var c;if(b&&"?"==b[1])a.j("register commands:"),a.j("\tr\tdump registers"),a.j("\trm\tdump misc registers"),a.j("\trx [#]\tset flag or register x to [#]");else{var d=!1,e=a.b;null==c&&(c=!0);if(b&&1<b.length){var f=b[1];if("m"==f)d=!0;else{var g=f.indexOf("=");if(0<g)b=f.substr(g+1),f=f.substr(0,g);else if(2<b.length)b=b[2];else{a.j("missing value for "+b[1]);return}g=pi(a,b);if(void 0===g)return;b=f.toUpperCase();switch(b){case "SP":case "R6":e.u[6]=g&65535;break;case "PC":case "R7":Rd(e,
+g);a.L=X(e.u[7]);break;case "N":e.X=g?32768:0;break;case "Z":e.Z=g?0:1;break;case "V":e.W=g?32768:0;break;case "C":e.V=g?65536:0;break;case "PS":hd(e,g);break;case "IR":fd(e,g);break;case "ER":e.qa=g;d=!0;break;case "SL":e.mb=g|255;break;case "MMR0":bd(e,g);d=!0;break;case "MMR3":ed(e,g);d=!0;break;case "AR":a.v&&(d=a.v,cc(d,d.Da=g));d=!0;break;case "DR":a.v&&(d=a.v,$b(d,d.Hb=g));d=!0;break;case "SR":if(a.v&&rc(a.v)){dc(a.v,g);d=!0;break}default:if("R"==b.charAt(0)&&(b=+b.charAt(1),0<=b&&6>b)){e.u[b]=
+g&65535;break}a.j("unknown register: "+f);return}a.B.ya();a.j("updated registers:")}}a.j(Xi(a,d));c&&(a.L=X(e.u[7]),Ni(a,Y(a,a.L)))}}function bj(a,b){b=ua(b);var c=b.match(/^(['"])(.*?)\1$/);c?1<c[2].length?a.j(c[2]):si(a,null,c[2].charCodeAt(0)):pi(a,b,!0)}
+function cj(a,b,c){if("?"==c)a.j("trace commands:"),a.j("\tt  [#]\ttrace # instructions"),a.j("\ttr [#]\ttrace # instructions with register updates"),a.j("\ttc [#]\ttrace # cycles"),a.j("note: bn [#] breaks after # instructions without updates");else{var d="t"!=b;c=ri(a,c,null,!0)||1;var e=0;"tc"==b&&(e=c,c=1);a.Ab=b;Ra(c,function(){return tb(a,!0)&&a.xb(e,d,!1)},function(){a.v&&a.v.stop();a.B.ya(-1);tb(a,!1)})}}
+function Ni(a,b,c,d){if(b=Fi(a,b,!0)){void 0===d&&(d=1);var e=256;if(void 0!==c)if("l"==c.charAt(0))c=ri(a,c.substr(1)),null!=c&&(d=c);else{d=Fi(a,c,!0);if(!d||d.H<b.H)return;e=d.H-b.H;if(256<e){a.j("range too large");return}d=-1}c=0;for(var f;0<e&&d--;){f=ub(a,!1)||a.N?a.I:null;var g=null!=f?"cycles":null,k=Yi(a,b),l=b.H;if(k[0]&&d&&(!c&&d||0>k[0].indexOf("+"))){var m=k[0]+":";k[2]&&(m+=" "+k[2]);a.j(m)}k[3]&&(g=k[3],f=null);f=Ui(a,b,g,f);a.j(f);a.L=b;e-=b.H-l;c++}}}
+function Ti(a,b,c){var d=!0;try{b.length&&"end"!=b?c||a.j(">> "+b):(a.T&&(a.j("ended assemble at "+Y(a,a.S)),a.L=a.S,a.T=!1),b="");var e=b.charAt(0);if('"'==e||"'"==e)return!0;a.oa=null;if(Ab(a)&&0<b.length){a.T&&(b="a "+Y(a,a.S)+" "+b);var f=!1,g=b.replace(/ +/g," ").split(" ");g[0]=g[0].toLowerCase();if(g&&g.length)for(var k=g[0],l=k.charAt(0),m=1;m<k.length;m++){var n=k.charAt(m);if("?"==l||"r"==l||"a">n||"z"<n){g[0]=k.substr(m);g.unshift(k.substr(0,m));break}}switch(g[0].charAt(0)){case "a":var r=
+Fi(a,g[1],!0);if(r)if(a.S=r,void 0===g[2])a.j("begin assemble at "+Y(a,r)),a.T=!0,a.B.ya();else{var u;a.j("not supported yet");u=[];if(u.length){for(var t=0;t<u.length;t++)a.ob(r,u[t],1);a.j(Ui(a,a.S))}}break;case "b":a:{var C=g[0],y=g[1],A=b;if("?"==y)a.j("breakpoint commands:"),a.j("\tbp [#]\tset exec breakpoint at addr #"),a.j("\tbr [#]\tset read breakpoint at addr #"),a.j("\tbw [#]\tset write breakpoint at addr #"),a.j("\tbc [#]\tclear breakpoint at addr #"),a.j("\tbl\tlist all breakpoints"),
+a.j("\tbn [#]\tbreak after # instruction(s)");else{var D=C.charAt(1);if("l"==D){var Ua;Ua=0+Si(a,a.f);Ua+=Si(a,a.P);(Ua+=Si(a,a.K))||a.j("no breakpoints")}else if("n"==D)a.wa=ri(a,y),a.j("break after "+a.wa+" instruction(s)");else if(void 0===y)a.j("missing breakpoint address");else{var S=X();if("*"!=y&&(S=Fi(a,y,!0),!S))break a;"c"==D?null==S.H?(vi(a),a.j("all breakpoints cleared")):Qi(a,a.f,S)||Qi(a,a.P,S)||Qi(a,a.K,S)||a.j("breakpoint missing: "+Y(a,S)):null!=S.H&&(Ji(a,S,A),"p"==D?a.Bb(a.f,S):
+"r"==D?a.Bb(a.P,S):"w"==D?a.Bb(a.K,S):a.j("unknown breakpoint command: "+D))}}}break;case "c":a.jb&&(a.jb.value="");break;case "d":a:{var vb,La=g[0],wa=g[1],Ma=g[2],vj=g[3];if("?"==wa){var wb="";for(vb in Gb)a.Pa[vb]&&(wb&&(wb+=","),wb+=vb);wb+=",state,symbols";a.j("dump memory commands:");a.j("\tda [a]        dump info for address a");a.j("\tdb [a] [n]    dump n bytes at address a");a.j("\tdw [a] [n]    dump n words at address a");a.j("\tdd [a] [n]    dump n dwords at address a");a.j("\tds [a] [n]    dump n words at address a as JSON");
+a.j("\tdh [p] [n]    dump n instructions from history position p");wb.length&&a.j("dump extension commands:\n\t"+wb)}else if("state"==wa){var dh=dj(a.B,!0);"console"==Ma?console.log(dh):(a.jb&&(a.jb.value=""),a.j(dh))}else if("symbols"==wa)for(var ae=0;ae<a.G.length;ae++){var be=a.G[ae],xb;for(xb in be.ka)if("."!=xb.charAt(0)){var eh=be.ka[xb].o;if(void 0!==eh){var fh=be.ka[xb].l;fh&&(xb=fh);a.j(M(a,eh)+" "+xb)}}}else{if("d"==La){for(vb in Gb)if(g[1]==vb){var gh=a.Pa[vb];gh?(g.shift(),g.shift(),gh(g)):
+a.j("no dump registered for "+wa);break a}wa||(La=a.Qb||"dw")}else a.Qb=La;if("dh"==La){var hh=wa,ih=Ma,jh="",kh=0,na=a.ca,xa=a.F;if(xa.length){var ha=+hh||a.sb,ec=+ih||10;isNaN(ha)?ha=ec:jh="more ";ha>xa.length&&(a.j("note: only "+xa.length+" available"),ha=xa.length);na-=ha;0>na&&(null==xa[xa.length-1].H?(ha=na+ha,na=0):na+=xa.length);var ce=[];"call"==ih&&(ec=1E5,ce=["CALL"]);for(void 0!==hh&&a.j(ha+" instructions earlier:");0<ec&&na!=a.ca;){var lh=xa[na++];if(null==lh.H)break;var fc=X(lh.H),wj=
+ha--,mh=Ui(a,fc,"history",wj);(!ce.length||0<=mh.indexOf(ce[0]))&&a.j(mh);fc.xc&&(na+=fc.xc,ec-=fc.xc,ha-=fc.xc);na>=xa.length&&(na=0);a.sb=ha;kh++;ec--}}kh||(a.j("no "+jh+"history available"),a.sb=void 0)}else{var ya=Fi(a,wa);if(ya)if("da"==La){var ia=a.b.jc(ya.H);a.j(ta("",19)+oa(ya.H,17,3)+"  "+p(ya.H,8));1<ia.length&&(a.j(ta("",24)+oa(ia[1],13,3)+"  "+p(ia[1],8)),a.j("+   "+Bi[ia[2]]+"PAR"+ia[3]+": "+oa(ia[4],22,3)+"  "+p(ia[4],8)),a.j("&  MMUMASK: "+oa(ia[5],22,3)+"  "+p(ia[5],8)),a.j("= PHYSICAL: "+
+oa(ia[0],22,3)+"  "+p(ia[0],8)))}else{var Xa=0,de="ds"==La;if(Ma){if("l"==Ma.charAt(0))Ma=Ma.substr(1)||vj,Xa=ri(a,Ma);else{var nh=Fi(a,Ma);nh&&(Xa=nh.H-ya.H)}0>Xa&&(Xa=0);65536<Xa&&(Xa=65536)}for(var Ya="dd"==La?4:"db"==La?1:2,Tc=Ya*Xa||128,ee=de?16:a.na,xj=(Tc+ee-1)/ee|0||1,Za="";xj--&&0<Tc;){for(var $a="",fe="",wa=Y(a,ya),Uc=ee,gc=0,hc=0;0<Uc&&0<Tc;){var yb=1,Vc=1==Ya?a.cb(ya,yb):a.ia(ya,yb=2),gc=gc|Vc<<(hc<<3),hc=hc+yb;hc==Ya&&(de?($a&&($a+=","),$a+="0x"+q(gc,2*Ya)):($a+=M(a,gc,Ya),$a+=1==Ya?
+9==Uc?"-":" ":"  "),gc=hc=0);Uc-=yb;for(Tc-=yb;1==Ya&&yb--;)var ge=Vc&255,fe=fe+(32<=ge&&128>ge?String.fromCharCode(ge):"."),Vc=Vc>>8}Za&&(Za+="\n");Za=de?Za+($a+","):Za+(wa+":  "+$a+(0==Uc?" "+fe:""))}Za&&a.j(Za);a.Ya=ya}}}}break;case "e":if("else"==g[0])break;var zb,he,ie,je,ke=g[0],le=g[1];"eb"==ke?(zb=1,he=255,ie=a.cb,je=a.ob):"e"==ke||"ew"==ke?(zb=2,he=65535,ie=a.ia,je=a.Sa):le=null;if(null==le)a.j("edit memory commands:"),a.j("\teb [a] [...]  edit bytes at address a"),a.j("\tew [a] [...]  edit words at address a");
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+h.ia=function(a,b,c,d){this.l=a;this.h=b;this.a=c;this.D=d;if(a=If(this,tc(this.l,"autoMount")))for(var e in a)e.substr(0,2)==this.type.substr(0,2)&&(this.w[e]=a[e]);Lf(this);this.Xa=Vb(this.a,144,5,65536);fb(b,this,Mf);hb(b,this.reset.bind(this));Nf(this,"None","",!0);this.A&&Nf(this,"Local Disk","?");Nf(this,"Remote Disk","??");Of(this)||F(this)};
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+h.ia=function(a,b,c,d){this.l=a;this.h=b;this.a=c;this.D=d;if(a=Sf(this,tc(this.l,"autoMount")))for(var e in a)e.substr(0,2)==this.type.substr(0,2)&&(this.A[e]=a[e]);Vf(this);this.Xa=Vb(this.a,112,5,131072);fb(b,this,Wf);hb(b,this.reset.bind(this));Xf(this,"None","",!0);this.C&&Xf(this,"Local Disk","?");Xf(this,"Remote Disk","??");Yf(this)||F(this)};
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