diff --git a/modules/pdp11/lib/cpustate.js b/modules/pdp11/lib/cpustate.js
index 2d05157c7..b34f2d637 100644
--- a/modules/pdp11/lib/cpustate.js
+++ b/modules/pdp11/lib/cpustate.js
@@ -243,17 +243,18 @@ CPUStatePDP11.prototype.resetCPU = function()
  */
 CPUStatePDP11.prototype.resetMMU = function()
 {
-    this.regSL = 0xff;          // 177774
-    this.regErr = 0;            // 177766
-    this.regPIR = 0;            // 177772
     this.regMMR0 = 0;           // 177572
     this.regMMR1 = 0;           // 177574
     this.regMMR2 = 0;           // 177576
     this.regMMR3 = 0;           // 172516
+    this.regErr = 0;            // 177766
+    this.regPIR = 0;            // 177772
+    this.regSL = 0xff;          // 177774
     this.mmuEnable = 0;         // MMU enabled for PDP11.ACCESS.READ or PDP11.ACCESS.WRITE
     this.mmuLastMode = 0;
     this.mmuMask = 0x3ffff;
 
+    this.lastAddr = 0;          // this is queried by the Panel when it's not using its own ADDRESS register
     this.lastOp = 0;            // stores the PC and any auto-incs or auto-decs from the last opcode; used to update MMR1 and MMR2
 
     this.resetTriggers();
@@ -684,6 +685,17 @@ CPUStatePDP11.prototype.getPC = function()
     return this.regsGen[PDP11.REG.PC];
 };
 
+/**
+ * getLastAddr()
+ *
+ * @this {CPUStatePDP11}
+ * @return {number}
+ */
+CPUStatePDP11.prototype.getLastAddr = function()
+{
+    return this.lastAddr;
+};
+
 /**
  * getLastPC()
  *
@@ -1605,8 +1617,13 @@ CPUStatePDP11.prototype.mapVirtualToPhysical = function(virtualAddress, accessFl
                 newMMR0 |= (this.mmuLastMode << 5) | (this.mmuLastPage << 1);
                 this.assert(!(newMMR0 & ~PDP11.MMR0.UPDATE));
                 this.setMMR0((this.regMMR0 & ~PDP11.MMR0.UPDATE) | newMMR0);
+                /*
+                 * I've decided to NOT set fAbort if MMR0 already indicates an ABORT condition,
+                 * because otherwise we run the risk of infinitely looping; eg, we call trap(), which
+                 * calls mapVirtualToPhysical() on the trap vector, which faults again, etc.
+                 */
+                fAbort = true;
             }
-            fAbort = true;
         }
         if (!(this.regMMR0 & (PDP11.MMR0.ABORT | PDP11.MMR0.TRAP_MMU))) {
             /*
@@ -1999,7 +2016,7 @@ CPUStatePDP11.prototype.getVirtualAddrByMode = function(mode, reg, accessFlags)
  */
 CPUStatePDP11.prototype.readWordFromPhysical = function(physicalAddress)
 {
-    return this.bus.getWord(physicalAddress);
+    return this.bus.getWord(this.lastAddr = physicalAddress);
 };
 
 /**
@@ -2013,7 +2030,7 @@ CPUStatePDP11.prototype.readWordFromPhysical = function(physicalAddress)
  */
 CPUStatePDP11.prototype.readWordFromVirtual = function(virtualAddress)
 {
-    return this.bus.getWord(this.mapVirtualToPhysical(virtualAddress, PDP11.ACCESS.READ_WORD));
+    return this.bus.getWord(this.lastAddr = this.mapVirtualToPhysical(virtualAddress, PDP11.ACCESS.READ_WORD));
 };
 
 /**
@@ -2027,7 +2044,7 @@ CPUStatePDP11.prototype.readWordFromVirtual = function(virtualAddress)
  */
 CPUStatePDP11.prototype.writeWordToPhysical = function(physicalAddress, data)
 {
-    this.bus.setWord(physicalAddress, data & 0xffff);
+    this.bus.setWord(this.lastAddr = physicalAddress, data & 0xffff);
 };
 
 /**
@@ -2041,7 +2058,7 @@ CPUStatePDP11.prototype.writeWordToPhysical = function(physicalAddress, data)
  */
 CPUStatePDP11.prototype.writeWordToVirtual = function(virtualAddress, data)
 {
-    this.bus.setWord(this.mapVirtualToPhysical(virtualAddress, PDP11.ACCESS.WRITE_WORD), data);
+    this.bus.setWord(this.lastAddr = this.mapVirtualToPhysical(virtualAddress, PDP11.ACCESS.WRITE_WORD), data);
 };
 
 /**
diff --git a/modules/pdp11/lib/debugger.js b/modules/pdp11/lib/debugger.js
index bf18ed94d..5dc89dc67 100644
--- a/modules/pdp11/lib/debugger.js
+++ b/modules/pdp11/lib/debugger.js
@@ -266,7 +266,32 @@ if (DEBUGGER) {
      * Register numbers 0-7 are reserved for cpu.regsGen, 8-15 are reserved for cpu.regsAlt, and 16-19 for cpu.regsStack.
      */
     DebuggerPDP11.REG_PSW       = 20;
-    DebuggerPDP11.REG_SR        = 21;           // SWITCH register; see Panel's getSR() and setSR()
+    DebuggerPDP11.REG_PIR       = 21;
+    DebuggerPDP11.REG_ERR       = 22;
+    DebuggerPDP11.REG_SL        = 23;
+    DebuggerPDP11.REG_MMR0      = 24;
+    DebuggerPDP11.REG_MMR1      = 25;
+    DebuggerPDP11.REG_MMR2      = 26;
+    DebuggerPDP11.REG_MMR3      = 27;
+    DebuggerPDP11.REG_AR        = 28;           // ADDRESS register; see Panel's getAR() and setAR()
+    DebuggerPDP11.REG_DR        = 29;           // DISPLAY/DATA register; see Panel's getDR() and setDR()
+    DebuggerPDP11.REG_SR        = 30;           // SWITCH register; see Panel's getSR() and setSR()
+
+    DebuggerPDP11.REGS = {
+        "SP":   6,
+        "PC":   7,
+        "PS":   DebuggerPDP11.REG_PSW,
+        "IR":   DebuggerPDP11.REG_PIR,
+        "ER":   DebuggerPDP11.REG_ERR,
+        "SL":   DebuggerPDP11.REG_SL,
+        "MMR0": DebuggerPDP11.REG_MMR0,
+        "MMR1": DebuggerPDP11.REG_MMR1,
+        "MMR2": DebuggerPDP11.REG_MMR2,
+        "MMR3": DebuggerPDP11.REG_MMR3,
+        "AR":   DebuggerPDP11.REG_AR,
+        "DR":   DebuggerPDP11.REG_DR,
+        "SR":   DebuggerPDP11.REG_SR
+    };
 
     /*
      * Operand type masks; anything that's not covered by OP_SRC or OP_DST must be a OP_OTHER value.
@@ -1118,24 +1143,14 @@ if (DEBUGGER) {
      */
     DebuggerPDP11.prototype.getRegIndex = function(sReg, off)
     {
-        var iReg = -1;
         sReg = sReg.toUpperCase();
-        switch(sReg) {
-        case "SP":
-            iReg = 6;
-            break;
-        case "PC":
-            iReg = 7;
-            break;
-        case "SR":
-            iReg = 21;
-            break;
-        default:
+        var iReg = DebuggerPDP11.REGS[sReg];
+        if (iReg == null) {
+            iReg = -1;
             if (sReg.charAt(0) == "R") {
                 iReg = +sReg.charAt(1);
                 if (iReg < 0 || iReg > 7) iReg = -1;
             }
-            break;
         }
         return iReg;
     };
@@ -1156,7 +1171,7 @@ if (DEBUGGER) {
      * getRegValue(iReg)
      *
      * Register numbers 0-7 are reserved for cpu.regsGen, 8-15 are reserved for cpu.regsAlt,
-     * 16-19 for cpu.regsAltStack, 20 for regPSW, and 21 for SR (SWITCH register).
+     * 16-19 for cpu.regsAltStack, 20 for regPSW, etc.
      *
      * @this {DebuggerPDP11}
      * @param {number} iReg
@@ -1175,11 +1190,50 @@ if (DEBUGGER) {
             else if (iReg < 20) {
                 value = this.cpu.regsAltStack[iReg-16];
             }
-            else if (iReg == DebuggerPDP11.REG_PSW) {
-                value = this.cpu.getPSW();
-            }
-            else if (iReg == DebuggerPDP11.REG_SR && this.panel && this.panel.hasSwitches()) {
-                value = this.panel.getSR();
+            else {
+                var cpu = this.cpu;
+                var panel = this.panel;
+                switch(iReg) {
+                case DebuggerPDP11.REG_PSW:
+                    value = this.cpu.getPSW();
+                    break;
+                case DebuggerPDP11.REG_PIR:
+                    value = cpu.regPIR;
+                    break;
+                case DebuggerPDP11.REG_ERR:
+                    value = cpu.regErr;
+                    break;
+                case DebuggerPDP11.REG_SL:
+                    value = cpu.regSL;
+                    break;
+                case DebuggerPDP11.REG_MMR0:
+                    value = panel.getMMR0();
+                    break;
+                case DebuggerPDP11.REG_MMR1:
+                    value = panel.getMMR1();
+                    break;
+                case DebuggerPDP11.REG_MMR2:
+                    value = panel.getMMR2();
+                    break;
+                case DebuggerPDP11.REG_MMR3:
+                    value = panel.getMMR3();
+                    break;
+                case DebuggerPDP11.REG_AR:
+                    if (panel) {
+                        value = panel.getAR();
+                    }
+                    break;
+                case DebuggerPDP11.REG_DR:
+                    if (panel) {
+                        value = panel.getDR();
+                    }
+                    break;
+                case DebuggerPDP11.REG_SR:
+                    if (panel && panel.hasSwitches()) {
+                        value = panel.getSR();
+                    }
+                    break;
+                }
             }
         }
         return value;
@@ -1371,6 +1425,7 @@ if (DEBUGGER) {
          * is calling us in a loop, in which case it will perform its own updateDisplays() when it's done.
          */
         if (fUpdateDisplays !== false) {
+            if (this.panel && this.panel.stop) this.panel.stop();
             this.cmp.updateDisplays(-1);
         }
 
@@ -2393,28 +2448,86 @@ if (DEBUGGER) {
         else if (iReg >= 16 && iReg < 20) {
             sReg = "S" + (iReg - 16) + '=' + this.toStrBase(cpu.regsAltStack[iReg - 16]);
         }
-        else if (iReg == DebuggerPDP11.REG_PSW) {
-            sReg = "PS=" + this.toStrBase(cpu.getPSW());
-        }
-        else if (iReg == DebuggerPDP11.REG_SR && this.panel && this.panel.hasSwitches()) {
-            sReg = "SR=" + this.toStrBase(this.panel.getSR(), 3);
+        else {
+            switch(iReg) {
+            case DebuggerPDP11.REG_PSW:
+                sReg = "PS=" + this.toStrBase(cpu.getPSW());
+                break;
+            case DebuggerPDP11.REG_PIR:
+                sReg = "IR=" + this.toStrBase(cpu.regPIR);
+                break;
+            case DebuggerPDP11.REG_ERR:
+                sReg = "ER=" + this.toStrBase(cpu.regErr);
+                break;
+            case DebuggerPDP11.REG_SL:
+                sReg = "SL=" + this.toStrBase(cpu.regSL);
+                break;
+            case DebuggerPDP11.REG_MMR0:
+                sReg = "MMR0=" + this.toStrBase(cpu.getMMR0());
+                break;
+            case DebuggerPDP11.REG_MMR1:
+                sReg = "MMR1=" + this.toStrBase(cpu.getMMR1());
+                break;
+            case DebuggerPDP11.REG_MMR2:
+                sReg = "MMR2=" + this.toStrBase(cpu.getMMR2());
+                break;
+            case DebuggerPDP11.REG_MMR3:
+                sReg = "MMR3=" + this.toStrBase(cpu.getMMR3());
+                break;
+            case DebuggerPDP11.REG_AR:
+                if (this.panel) {
+                    sReg = "AR=" + this.toStrBase(this.panel.getAR(), 3);
+                }
+                break;
+            case DebuggerPDP11.REG_DR:
+                if (this.panel) {
+                    sReg = "DR=" + this.toStrBase(this.panel.getDR());
+                }
+                break;
+            case DebuggerPDP11.REG_SR:
+                if (this.panel && this.panel.hasSwitches()) {
+                    sReg = "SR=" + this.toStrBase(this.panel.getSR(), 3);
+                }
+                break;
+            }
         }
         if (sReg) sReg += ' ';
         return sReg;
     };
 
     /**
-     * getRegDump()
+     * getMiscDump()
      *
      * Sample register dump:
      *
-     *      R0=xxxx R1=xxxx R2=xxxx R3=xxxx R4=xxxx R5=xxxx
-     *      SP=xxxx PC=xxxx PS=xxxx T0 N0 Z0 V0 C0
+     *      MMR0=xxxxxx MMR1=xxxxxx MMR2=xxxxxx MMR3=xxxxxx ER=xxxxxx
      *
      * @this {DebuggerPDP11}
      * @return {string}
      */
-    DebuggerPDP11.prototype.getRegDump = function()
+    DebuggerPDP11.prototype.getMiscDump = function()
+    {
+        var sDump = "";
+        sDump += this.getRegOutput(DebuggerPDP11.REG_MMR0) + this.getRegOutput(DebuggerPDP11.REG_MMR1);
+        sDump += this.getRegOutput(DebuggerPDP11.REG_MMR2) + this.getRegOutput(DebuggerPDP11.REG_MMR3) + this.getRegOutput(DebuggerPDP11.REG_ERR);
+        sDump += '\n';
+        sDump += this.getRegOutput(DebuggerPDP11.REG_SR) + this.getRegOutput(DebuggerPDP11.REG_AR) + this.getRegOutput(DebuggerPDP11.REG_DR);
+        return sDump;
+    };
+
+    /**
+     * getRegDump(fMisc)
+     *
+     * Sample register dump:
+     *
+     *      R0=xxxxxx R1=xxxxxx R2=xxxxxx R3=xxxxxx R4=xxxxxx R5=xxxxxx
+     *      SP=xxxxxx PC=xxxxxx PS=xxxxxx IR=xxxxxx SL=xxxxxx T0 N0 Z0 V0 C0
+     *
+     * @this {DebuggerPDP11}
+     * @param {boolean} [fMisc] (true to include misc registers)
+     * @return {string}
+     */
+    DebuggerPDP11.prototype.getRegDump = function(fMisc)
     {
         var i;
         var sDump = "";
@@ -2423,8 +2536,9 @@ if (DEBUGGER) {
         }
         sDump += '\n';
         sDump += this.getRegOutput(PDP11.REG.SP) + this.getRegOutput(PDP11.REG.PC);
-        sDump += this.getRegOutput(DebuggerPDP11.REG_PSW) + this.getRegOutput(DebuggerPDP11.REG_SR);
+        sDump += this.getRegOutput(DebuggerPDP11.REG_PSW) + this.getRegOutput(DebuggerPDP11.REG_PIR) + this.getRegOutput(DebuggerPDP11.REG_SL);
         sDump += this.getFlagOutput('T') + this.getFlagOutput('N') + this.getFlagOutput('Z') + this.getFlagOutput('V') + this.getFlagOutput('C');
+        if (fMisc) sDump += '\n' + this.getMiscDump();
         return sDump;
     };
 
@@ -3390,77 +3504,115 @@ if (DEBUGGER) {
         if (asArgs && asArgs[1] == '?') {
             this.println("register commands:");
             this.println("\tr\tdump registers");
+            this.println("\trm\tdump misc registers");
             this.println("\trx [#]\tset flag or register x to [#]");
             return;
         }
 
+        var fMisc = false;
         var cpu = this.cpu;
         if (fInstruction == null) fInstruction = true;
 
         if (asArgs != null && asArgs.length > 1) {
             var sReg = asArgs[1];
-            var sValue = null;
-            var i = sReg.indexOf('=');
-            if (i > 0) {
-                sValue = sReg.substr(i + 1);
-                sReg = sReg.substr(0, i);
-            }
-            else if (asArgs.length > 2) {
-                sValue = asArgs[2];
+
+            if (sReg == 'm') {
+                fMisc = true;
             }
             else {
-                this.println("missing value for " + asArgs[1]);
-                return;
-            }
-
-            var w = this.parseExpression(sValue);
-            if (w === undefined) return;
-
-            var sRegMatch = sReg.toUpperCase();
-            switch (sRegMatch) {
-            case "SP":
-            case "R6":
-                cpu.setSP(w);
-                break;
-            case "PC":
-            case "R7":
-                cpu.setPC(w);
-                this.dbgAddrNextCode = this.newAddr(cpu.getPC());
-                break;
-            case "N":
-                if (w) cpu.setNF(); else cpu.clearNF();
-                break;
-            case "Z":
-                if (w) cpu.setZF(); else cpu.clearZF();
-                break;
-            case "V":
-                if (w) cpu.setVF(); else cpu.clearVF();
-                break;
-            case "C":
-                if (w) cpu.setCF(); else cpu.clearCF();
-                break;
-            case "SR":
-                if (this.panel && this.panel.hasSwitches()) {
-                    this.panel.setSR(w);
-                    break;
+                var sValue = null;
+                var i = sReg.indexOf('=');
+                if (i > 0) {
+                    sValue = sReg.substr(i + 1);
+                    sReg = sReg.substr(0, i);
                 }
-                /* falls through */
-            default:
-                if (sRegMatch.charAt(0) == 'R') {
-                    var iReg = +sRegMatch.charAt(1);
-                    if (iReg >= 0 && iReg < 6) {
-                        cpu.regsGen[iReg] = w & 0xffff;
+                else if (asArgs.length > 2) {
+                    sValue = asArgs[2];
+                }
+                else {
+                    this.println("missing value for " + asArgs[1]);
+                    return;
+                }
+
+                var w = this.parseExpression(sValue);
+                if (w === undefined) return;
+
+                var sRegMatch = sReg.toUpperCase();
+                switch (sRegMatch) {
+                case "SP":
+                case "R6":
+                    cpu.setSP(w);
+                    break;
+                case "PC":
+                case "R7":
+                    cpu.setPC(w);
+                    this.dbgAddrNextCode = this.newAddr(cpu.getPC());
+                    break;
+                case "N":
+                    if (w) cpu.setNF(); else cpu.clearNF();
+                    break;
+                case "Z":
+                    if (w) cpu.setZF(); else cpu.clearZF();
+                    break;
+                case "V":
+                    if (w) cpu.setVF(); else cpu.clearVF();
+                    break;
+                case "C":
+                    if (w) cpu.setCF(); else cpu.clearCF();
+                    break;
+                case "PS":
+                    cpu.setPSW(w);
+                    break;
+                case "IR":
+                    cpu.setPIR(w);
+                    break;
+                case "ER":
+                    cpu.regErr = w;
+                    fMisc = true;
+                    break;
+                case "SL":
+                    cpu.setSL(w);
+                    break;
+                case "MMR0":
+                    cpu.setMMR0(w);
+                    fMisc = true;
+                    break;
+                case "MMR3":
+                    cpu.setMMR3(w);
+                    fMisc = true;
+                    break;
+                case "AR":
+                    if (this.panel) this.panel.setAR(w);
+                    fMisc = true;
+                    break;
+                case "DR":
+                    if (this.panel) this.panel.setDR(w);
+                    fMisc = true;
+                    break;
+                case "SR":
+                    if (this.panel && this.panel.hasSwitches()) {
+                        this.panel.setSR(w);
+                        fMisc = true;
                         break;
                     }
+                    /* falls through */
+                default:
+                    if (sRegMatch.charAt(0) == 'R') {
+                        var iReg = +sRegMatch.charAt(1);
+                        if (iReg >= 0 && iReg < 6) {
+                            cpu.regsGen[iReg] = w & 0xffff;
+                            break;
+                        }
+                    }
+                    this.println("unknown register: " + sReg);
+                    return;
                 }
-                this.println("unknown register: " + sReg);
-                return;
+                this.cmp.updateDisplays();
+                this.println("updated registers:");
             }
-            this.cmp.updateDisplays();
-            this.println("updated registers:");
         }
 
-        this.println(this.getRegDump());
+        this.println(this.getRegDump(fMisc));
 
         if (fInstruction) {
             this.dbgAddrNextCode = this.newAddr(cpu.getPC());
@@ -3716,7 +3868,7 @@ if (DEBUGGER) {
                  * a final updateDisplays().
                  */
                 if (dbg.panel && dbg.panel.stop) dbg.panel.stop();
-                dbg.cmp.updateDisplays();
+                dbg.cmp.updateDisplays(-1);
                 dbg.setBusy(false);
             }
         );
diff --git a/modules/pdp11/lib/defines.js b/modules/pdp11/lib/defines.js
index 3dcb63b91..f78b33c2a 100644
--- a/modules/pdp11/lib/defines.js
+++ b/modules/pdp11/lib/defines.js
@@ -323,7 +323,7 @@ var PDP11 = {
         ENABLED:    0x0001,     // 000001 address relocation enabled
         PAGE_NUM:   0x000E,     // 000016 page number of last fault
         PAGE_D:     0x0010,     // 000020 last fault occurred in D space
-        PAGE:       0x001E,     // 000176 all of the PAGE bits
+        PAGE:       0x001E,     // 000176 (all of the PAGE bits)
         MODE:       0x0060,     // 000140 processor mode as of last fault
         COMPLETED:  0x0080,     // 000200 last instruction completed (R/O)
         DSTMODE:    0x0100,     // 000400 only destination mode references will be relocated (aka MAINT bit)
@@ -333,7 +333,7 @@ var PDP11 = {
         ABORT_RO:   0x2000,     // 020000 abort: read-only
         ABORT_PL:   0x4000,     // 040000 abort: page length
         ABORT_NR:   0x8000,     // 100000 abort: non-resident
-        ABORT:      0xE000,     // 160000
+        ABORT:      0xE000,     // 160000 (all of the ABORT bits)
         UPDATE:     0xF0FE      // Includes all of: ABORT, TRAP, COMPLETED, MODE, and PAGE bits
     },
     MMR1: {                     // 177574: general purpose auto-inc/auto-dec register
diff --git a/modules/pdp11/lib/panel.js b/modules/pdp11/lib/panel.js
index 3d4133380..a9d487162 100644
--- a/modules/pdp11/lib/panel.js
+++ b/modules/pdp11/lib/panel.js
@@ -176,6 +176,50 @@ PanelPDP11.LED = {
     B22:    'B22'
 };
 
+/**
+ * getAR()
+ *
+ * @this {PanelPDP11}
+ * @return {number} (current ADDRESS register)
+ */
+PanelPDP11.prototype.getAR = function()
+{
+    return this.regAddr;
+};
+
+/**
+ * setAR(value)
+ *
+ * @this {PanelPDP11}
+ * @param {number} value (new ADDRESS register)
+ */
+PanelPDP11.prototype.setAR = function(value)
+{
+    this.updateAddr(this.regAddr = value);
+};
+
+/**
+ * getDR()
+ *
+ * @this {PanelPDP11}
+ * @return {number} (current DISPLAY register)
+ */
+PanelPDP11.prototype.getDR = function()
+{
+    return this.regDisplay;
+};
+
+/**
+ * setDR(value)
+ *
+ * @this {PanelPDP11}
+ * @param {number} value (new DISPLAY register)
+ */
+PanelPDP11.prototype.setDR = function(value)
+{
+    this.updateData(this.regDisplay = value);
+};
+
 /**
  * getSR()
  *
@@ -1004,7 +1048,7 @@ PanelPDP11.prototype.updateDisplay = function(nUpdate)
              * TODO: There is currently no mechanism for selecting regData over regDisplay;
              * we are acting as if the DATASEL switch setting is locked to "DISPLAY REGISTER".
              */
-            this.updateAddr(nUpdate > 0 && fRunning && !fWaiting? this.cpu.getPC() : this.regAddr);
+            this.updateAddr(nUpdate > 0 && fRunning && !fWaiting? this.cpu.getLastAddr() : this.regAddr);
             this.updateData(this.regDisplay);
 
             var bits = this.cpu.getMMUState();
diff --git a/modules/pdp11/lib/serialport.js b/modules/pdp11/lib/serialport.js
index fe3874da6..9d1059cd8 100644
--- a/modules/pdp11/lib/serialport.js
+++ b/modules/pdp11/lib/serialport.js
@@ -244,6 +244,10 @@ SerialPortPDP11.prototype.setBinding = function(sType, sBinding, control, sValue
             if (event.preventDefault) event.preventDefault();
             var clipboardData = event.clipboardData || window.clipboardData;
             if (clipboardData) {
+                /*
+                 * NOTE: Multiple lines of pasted text will (at least on macOS) contain LFs instead of CRs;
+                 * this is dealt with in receiveData() whenever it receives a string of characters.
+                 */
                 serial.receiveData(clipboardData.getData('Text'));
             }
         };
@@ -522,8 +526,20 @@ SerialPortPDP11.prototype.receiveData = function(data)
         this.abReceive.push(data);
     }
     else if (typeof data == "string") {
+        var b = 0, bPrev;
         for (var i = 0; i < data.length; i++) {
-            this.abReceive.push(data.charCodeAt(i));
+            bPrev = b;
+            b = data.charCodeAt(i);
+            /*
+             * NOTE: Multiple lines of pasted text will (at least on macOS) contain LFs instead of CRs;
+             * we convert them to CRs below.  Windows may do something different, but in the worst case,
+             * even if we receive CR/LF pairs, this code should keep the CRs and lose the LFs.
+             */
+            if (b == str.ASCII.LF) {
+                if (bPrev == str.ASCII.CR) continue;
+                b = str.ASCII.CR;
+            }
+            this.abReceive.push(b);
         }
     }
     else {
diff --git a/modules/shared/lib/strlib.js b/modules/shared/lib/strlib.js
index f0509b825..3c8ff6cdc 100644
--- a/modules/shared/lib/strlib.js
+++ b/modules/shared/lib/strlib.js
@@ -551,6 +551,10 @@ str.trim = function(s)
 /*
  * Any codes commented out in the following table are deemed "printable"
  */
+str.ASCII = {
+    LF:     0x0A,
+    CR:     0x0D
+};
 str.aASCIICodes = {
     0x00:   "NUL",
     0x01:   "SOH",      // (CTRL_A) Start of Heading
diff --git a/versions/pdpjs/1.30.3/pdp11-dbg.js b/versions/pdpjs/1.30.3/pdp11-dbg.js
index 386f9a1c7..b9e72a96c 100644
--- a/versions/pdpjs/1.30.3/pdp11-dbg.js
+++ b/versions/pdpjs/1.30.3/pdp11-dbg.js
@@ -31,294 +31,297 @@
  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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+k.stop=function(a,b){if(this.A.W){this.A.W=!1;this.K=b-this.Kb;if(!this.S){b="stopped";if(this.K){a-=this.Jb;var c=0<a?Math.round(1E3*this.K/a):0;b+=" (";Ee(this)&&(b+=this.za+" instructions, ",this.za=0);b+=this.K+" cycles, "+a+" ms, "+c+" hz)"}else F(this,-2147483648)&&(b+=" (use the 't' command to execute blocked faults)");this.j(b)}wd(this,!0);this.ub();si(this,this.b.u[7]);this.ia=null}};function Ee(a){return 1<a.f.length||!!a.wa}
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+function $h(a){var b,c;a.f=["bp"];if(a.M)for(b=1;b<a.M.length;b++){c=a.M[b];var d=a.v;c=a.aa(c);pd(d.Y[c>>>d.ja],!1)}a.M=["br"];if(a.D)for(b=1;b<a.D.length;b++)c=a.D[b],d=a.v,c=a.aa(c),pd(d.Y[c>>>d.ja],!0);a.D=["bw"];a.nb=0}k.ob=function(a,b,c){var d=!0;c||ti(this,a,b,!1,!0);if(a!=this.f){var e=this.aa(b);if(-1===e)this.j("invalid address: "+J(this,b.F)),d=!1;else{var f=this.v;f.Y[e>>>f.ja].ob(e&f.v,a==this.D)}}d&&(a.push(b),c?b.Ra=!0:(ui(this,a,a.length-1,"set"),ai(this)));return d};
+function ti(a,b,c,d,e){var f=!1;c=a.aa(c);for(var g=1;g<b.length;g++){var h=b[g];if(c==a.aa(h)&&(!d||h.Ra)){f=!0;h.Ra||e||ui(a,b,g,"cleared");b.splice(g,1);b!=a.f&&(d=a.v,pd(d.Y[c>>>d.ja],b==a.D));h.Ra||ai(a);break}}return f}function vi(a,b){for(var c=1;c<b.length;c++)ui(a,b,c);return b.length-1}function ui(a,b,c,d){c=b[c];a.j(b[0]+" "+J(a,c.F)+(d?" "+d:c.Kc?' "'+c.Kc+'"':""))}
+function si(a,b){if(void 0!==b)od(a,b,1,a.f,!0),a.S=0;else for(b=1;b<a.f.length;b++){var c=a.f[b];if(c.Ra){if(!ti(a,a.f,c,!0))break;b=0}}}
+function od(a,b,c,d,e){var f=!1;if(!a.nb++)for(var g=1;!f&&g<d.length;g++){var h=d[g];if(!e||h.Ra)for(var l=a.aa(h)&65535,m=0;m<c;m++)if(b+m==l){var n,f=!0;h.Ra&&(ti(a,d,h,!0),e=!0);if(n=h.Pc){for(var f=!1,v=0;v<n.length;v++)if(!wi(a,n[v],!0)){if(n[v].indexOf("if")){f=!0;break}for(var r=v+1;r<n.length&&n[r].indexOf("else");r++)v++;if(r==n.length){f=!0;break}}a.b.A.W||(f=!0)}if(f){e||ui(a,d,g,"hit");break}}}a.nb--;return f}
+function xi(a,b,c,d){var e=Y(b.F),f=a.na(b,2),g,h;for(h in a.wb)if(g=a.wb[h][f&h])break;g||(g=gi);var l=g[0];0<=a.Ib.indexOf(l)&&(g=gi,l=g[0]);var m=h="",n=di[l],v=g.length-1;l||v||(h=J(a,f));for(l=1;l<=v;l++){var r=g[l];if(void 0!==r){var w;w=a;var y=r,r=b,x="",C=y&61440;if(4096==C)r=r.F+((f&255)<<24>>23)&65535,x=J(w,r);else if(8192==C)r=r.F-((f&63)<<1)&65535,x=J(w,r);else if(12288==C)x=J(w,f&7,1);else if(24576==C)x=J(w,f&63,1);else if(32768==C)x=J(w,f&255,1);else if(C=f&y,y&4032&&(C>>=6,y>>=6),
+y&63)switch(y=C&7,C&56){case 0:x=oi(y);break;case 8:x="@"+oi(y);break;case 16:7>y?x="("+oi(y)+")+":(C=w.na(r,2),x="#"+J(w,C,0,!0));break;case 24:7>y?x="@("+oi(y)+")+":(C=w.na(r,2),x="@#"+J(w,C,0,!0));break;case 32:x="-("+oi(y)+")";break;case 40:x="@-("+oi(y)+")";break;case 48:C=w.na(r,2);x=J(w,C,0,!0)+"("+oi(y)+")";7==y&&(x=J(w,C+r.F&65535));break;case 56:C=w.na(r,2),x="@"+J(w,C)+"("+oi(y)+")",7==y&&(x="@"+J(w,C+r.F&65535))}w=x;if(!w||!w.length){h="INVALID";break}"string"!=typeof w&&(m=w[1],w=w[0]);
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+function ah(a,b,c,d,e){var f=[],g;for(g in e){var h=e[g];"number"==typeof h&&(e[g]=h={o:h});var l=h.o,m=h.a;if(void 0!==l){var n=f,l=[l>>>0,g],v=Aa(n,l,a.sc);0>v&&n.splice(-(v+1),0,l)}m&&(h.a=m.replace(/''/g,'"'))}a.I.push({bf:b,F:c,Zc:d,ga:e,qc:f})}function Ai(a,b,c){var d=[],e=a.aa(b)>>>0;for(b=0;b<a.I.length;b++){var f=a.I[b],g=f.F>>>0,h=f.Zc;if(e>=g&&e<g+h){e=Aa(f.qc,[e-g],a.sc);0<=e?Bi(a,b,e,d):c&&(e=~e,Bi(a,b,e-1,d),Bi(a,b,e,d));break}}return d}
+function Bi(a,b,c,d){var e={},f=a.I[b].qc,g=0,h=null;0<=c&&c<f.length&&(g=f[c][0],h=f[c][1]);h&&(e=a.I[b].ga[h],h="."==h.charAt(0)?null:e.l||h);d.push(h);d.push(g);d.push(e.a);d.push(e.c)}function Ci(a,b){var c=b.match(/^\s*([A-Z_]?[A-Z0-9_]*)\s*(=?)\s*(.*)$/i);if(c){if(!c[1])return Yh(a)||a.j("no variables"),!0;if(!c[2])return Yh(a,c[1]);if(!c[3])return delete a.X[c[1]],!0;b=Uh(a,c[3]);return void 0!==b?(a.X[c[1]]=b,!0):!1}a.j("invalid assignment:"+b);return!1}
+function Di(a,b,c){var d=null;if(b=ji(a,b,!0)){a.aa(b);var e=Ai(a,b,!0);if(e.length){var f,g;e[0]&&(g="",(f=b.F-e[1])&&(g=" + "+p(f,4,!0)),f=e[0]+" ("+J(a,e[1])+")"+g,c&&a.j(f),d=f);4<e.length&&e[4]&&(g="",(f=e[5]-b.F)&&(g=" - "+p(f,4,!0)),f=e[4]+" ("+J(a,e[5])+")"+g,c&&a.j(f),d||(d=f))}else c&&a.j("no symbols")}return d}
+function qi(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=Uh(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":O(e,
+g);a.L=Y(e.u[7]);break;case "N":e.Z=g?32768:0;break;case "Z":e.$=g?0:1;break;case "V":e.U=g?32768:0;break;case "C":e.T=g?65536:0;break;case "PS":$c(e,g);break;case "IR":Yc(e,g);break;case "ER":e.ta=g;d=!0;break;case "SL":e.sb=g|255;break;case "MMR0":Uc(e,g);d=!0;break;case "MMR3":Xc(e,g);d=!0;break;case "AR":a.w&&(d=a.w,ic(d,d.sa=g));d=!0;break;case "DR":a.w&&(d=a.w,hc(d,d.rb=g));d=!0;break;case "SR":if(a.w&&lc(a.w)){jc(a.w,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.C.pa();a.j("updated registers:")}}a.j(zi(a,d));c&&(a.L=Y(e.u[7]),ri(a,J(a,a.L.F)))}}function Ei(a,b){b=ya(b);var c=b.match(/^(['"])(.*?)\1$/);c?1<c[2].length?a.j(c[2]):Xh(a,null,c[2].charCodeAt(0)):Uh(a,b,!0)}
+function Fi(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 [#] to break after # instructions is much faster");else{var d="t"!=b;c=Wh(a,c,null,!0)||1;var e=1==c?0:1;"tc"==b&&(e=c,c=1);a.yb=b;Ta(c,function(){return vb(a,!0)&&a.kb(e,d,!1)},function(){a.w&&a.w.stop&&a.w.stop();a.C.pa(-1);vb(a,!1)})}}
+function ri(a,b,c,d){if(b=ji(a,b,!0)){void 0===d&&(d=1);var e=256;if(void 0!==c)if("l"==c.charAt(0))c=Wh(a,c.substr(1)),null!=c&&(d=c);else{d=ji(a,c,!0);if(!d||d.F<b.F)return;e=d.F-b.F;if(256<e){a.j("range too large");return}d=-1}c=0;for(var f;0<e&&d--;){f=wb(a,!1)||a.S?a.K:null;var g=null!=f?"cycles":null,h=Ai(a,b),l=b.F;if(h[0]&&d&&(!c&&d||0>h[0].indexOf("+"))){var m=h[0]+":";h[2]&&(m+=" "+h[2]);a.j(m)}h[3]&&(g=h[3],f=null);f=xi(a,b,g,f);a.j(f);a.L=b;e-=b.F-l;c++}}}
+function wi(a,b,c){var d=!0;try{b.length&&"end"!=b?c||a.j(">> "+b):(a.R&&(a.j("ended assemble at "+J(a,a.O.F)),a.L=a.O,a.R=!1),b="");var e=b.charAt(0);if('"'==e||"'"==e)return!0;a.ia=null;if(xb(a)&&0<b.length){a.R&&(b="a "+J(a,a.O.F)+" "+b);var f=!1,g=b.replace(/ +/g," ").split(" ");g[0]=g[0].toLowerCase();if(g&&g.length)for(var h=g[0],l=h.charAt(0),m=1;m<h.length;m++){var n=h.charAt(m);if("?"==l||"r"==l||"a">n||"z"<n){g[0]=h.substr(m);g.unshift(h.substr(0,m));break}}switch(g[0].charAt(0)){case "a":var v=
+ji(a,g[1],!0);if(v)if(a.O=v,void 0===g[2])a.j("begin assemble at "+J(a,v.F)),a.R=!0,a.C.pa();else{var r;a.j("not supported yet");r=[];if(r.length){for(var w=0;w<r.length;w++)a.Eb(v,r[w],1);a.j(xi(a,a.O))}}break;case "b":a:{var y=g[0],x=g[1],C=b;if("?"==x)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"),
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+P):"r"==ka?a.ob(a.M,P):"w"==ka?a.ob(a.D,P):a.j("unknown breakpoint command: "+ka))}}}break;case "c":a.Va&&(a.Va.value="");break;case "d":a:{var jb,Na=g[0],na=g[1],Oa=g[2],Yi=g[3];if("?"==na){var kb="";for(jb in Cb)a.Ma[jb]&&(kb&&(kb+=","),kb+=jb);kb+=",state,symbols";a.j("dump memory commands:");a.j("\tdb [a] [#]    dump # bytes at address a");a.j("\tdw [a] [#]    dump # words at address a");a.j("\tdd [a] [#]    dump # dwords at address a");a.j("\tdh [#] [#]    dump # instructions from history");
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+2),Vb=Vb|Lc<<(Wb<<3),Wb=Wb+ob;Wb==nb&&(Td?(Qa&&(Qa+=","),Qa+="0x"+p(Vb,2*nb)):(Qa+=J(a,Vb,nb),Qa+=1==nb?9==Kc?"-":" ":"  "),Vb=Wb=0);Kc-=ob;for(Jc-=ob;ob--;)var Wd=Lc&255,Vd=Vd+(32<=Wd&&128>Wd?String.fromCharCode(Wd):"."),Lc=Lc>>8}Pa&&(Pa+="\n");Pa=Td?Pa+(Qa+","):Pa+(na+"  "+Qa+(0==Kc?" "+Vd:""))}Pa&&a.j(Pa);a.mb=mb}}}}break;case "e":if("else"==g[0])break;var pb,Xd,Yd,Zd,$d=g[0],ae=g[1];"eb"==$d?(pb=1,Xd=255,Yd=a.Lb,Zd=a.Eb):"e"==$d||"ew"==$d?(pb=2,Xd=65535,Yd=a.na,Zd=a.ib):ae=null;if(null==ae)a.j("edit memory commands:"),
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-h.seek=function(a,b,c,d,e){d=null;var f=this.g,g=this.a[a];if(g){var k=g[b];if(!k&&f.gc&&b<f.Y)for(k=g[b]=Array(f.hc),g=0;g<k.length;g++)k[g]=Df(null,a,b,g+1,f.Pb,0);if(k){for(g=0;g<k.length;g++)if(k[g]&&k[g].sector==c){d=k[g];break}!d&&f.gc&&9==f.Kb&&(d=k[g]=Df(null,a,b,f.Kb,f.Pb,0))}}e&&e(d,!1);return d};function Gf(a,b){for(var c=0,d=a.length>>2,e=Array(d),f=0;f<d;f++)e[f]=b[c]|b[c+1]<<8|b[c+2]<<16|b[c+3]<<24,c+=4;a.data=e}
+0;T<u.length;T++)c=c+u[T]&-1}a.a=k;a.b=c;e=a}else t("Empty disk image: "+a.xa)}catch(ya){t("Disk image error ("+b+"): "+ya.message)}}a.h&&(a.h.call(a.i,a.g,e,a.xa,a.Ca),a.h=null)}function Df(a,b,c,d,e,f){a||(a={sector:d,length:e,data:[],pattern:f});a.me=b;a.ne=c;a.na=a.ca=0;a.wa=!1;return a}
+h.seek=function(a,b,c,d,e){d=null;var f=this.g,g=this.a[a];if(g){var k=g[b];if(!k&&f.hc&&b<f.Y)for(k=g[b]=Array(f.ic),g=0;g<k.length;g++)k[g]=Df(null,a,b,g+1,f.Qb,0);if(k){for(g=0;g<k.length;g++)if(k[g]&&k[g].sector==c){d=k[g];break}!d&&f.hc&&9==f.Lb&&(d=k[g]=Df(null,a,b,f.Lb,f.Qb,0))}}e&&e(d,!1);return d};function Gf(a,b){for(var c=0,d=a.length>>2,e=Array(d),f=0;f<d;f++)e[f]=b[c]|b[c+1]<<8|b[c+2]<<16|b[c+3]<<24,c+=4;a.data=e}
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 h.restore=function(a){var b=0,c="unsupported restore format";if(a&&0<a.length){var d=0,e=a[d++];e&&2<=e.length&&(!this.a.length&&6<=e.length?Cf(this,"local",e[2],e[3],e[4],e[5]):null!=e[1]&&null!=this.b&&e[1]!=this.b&&(c="original checksum ("+e[1]+") differs from current checksum ("+this.b+")",b=-2));for(this.a.length||(b=-1);d<a.length&&0<=b;){var f=0,g=a[d++],k=g[f++],l=g[f++],n=g[f++];if(k>=this.a.length||l>=this.a[k].length||n>=this.a[k][l].length){c="sector (CHS="+k+":"+l+":"+n+") out of range ("+
@@ -193,46 +193,46 @@ b+" changes applied)";b=-1;break}if(this.c){c="unable to modify write-protected
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-h.la=function(a,b){if(!b){if(!a||!this.restore){if(this.reset(),this.l.Mb){for(a=0;a<this.b.length;a++)Qf(this,a,!0);Pf(this,!0)}}else if(!this.restore(a))return!1;if(a=this.o.listDrives){for(;a.firstChild;)a.removeChild(a.firstChild);a.value="";for(b=0;4>b;b++){var c=document.createElement("option");c.value=b;c.text="RL"+b;a.appendChild(c)}a.value="0";Kf(this,0)}}return!0};h.ka=function(a){return a?this.save():!0};h.reset=function(){Mf(this)};h.save=function(){return(new O(this)).data()};
+h.la=function(a,b){if(!b){if(!a||!this.restore){if(this.reset(),this.l.Nb){for(a=0;a<this.b.length;a++)Qf(this,a,!0);Pf(this,!0)}}else if(!this.restore(a))return!1;if(a=this.o.listDrives){for(;a.firstChild;)a.removeChild(a.firstChild);a.value="";for(b=0;4>b;b++){var c=document.createElement("option");c.value=b;c.text="RL"+b;a.appendChild(c)}a.value="0";Kf(this,0)}}return!0};h.ka=function(a){return a?this.save():!0};h.reset=function(){Mf(this)};h.save=function(){return(new O(this)).data()};
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+function Rf(a,b,c,d,e,f){var g=-1,k=a.b[b];k.Ca.toLowerCase()!=d.toLowerCase()&&(g++,Qf(a,b,!0),k.wb?a.G("RL11 busy"):(k.wb=!0,e&&(k.vb=!0,a.s++),k.ib=!!f,Ef(new Af(a,k,"preload"),c,d,f,a.lc)&&g++));return g}
+h.lc=function(a,b,c,d,e){var f;a.wb=!1;b&&(f=b.a.length?[b.a.length,b.a[0].length,b.a[0][0].length,b.a[0][0][0].length]:[0,0,0,0],b&&f[0]>a.U||f[1]>a.Y)&&(this.G('Disk "'+c+'" too large for drive '+("RL"+a.zb)),b=null);b?(a.da=b,a.xa=c,a.Ca=d,this.G('Mounted disk "'+c+'" in drive '+("RL"+a.zb),a.vb||e),this.l&&zc(this.l)):a.ib=!1;a.vb&&(a.vb=!1,--this.s||F(this));Kf(this,a.zb)};
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-function Kf(a,b){if(0<=b&&b<a.b.length){var c=a.b[b],d=a.o.listDisks;a=a.o.listDrives;if(d&&a&&d.options&&a.options&&(a=ja(a.value),c=c.hb?"?":c.Ca,!isNaN(a)&&a==b)){for(b=0;b<d.options.length;b++)if(d.options[b].value==c){d.selectedIndex!=b&&(d.selectedIndex=b);break}b==d.options.length&&(d.selectedIndex=0)}}}function Qf(a,b,c){var d=a.b[b];if(d.da||!1===c)d.xa="",d.Ca="",d.da=null,d.hb=!1,c||(a.G("Drive RL"+b+" unloaded",c),Kf(a,b))}
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-h.zc=function(a,b,c,d,e,f,g){var k=0,l=a.da,n=null,p;l||(k=5120,e=0);for(;e--;){if(!n){n=a.da.seek(b,c,d+1);if(!n){k=5120;break}p=0}var u,w;if(0>(u=a.da.read(n,p++))||0>(w=a.da.read(n,p++))){k=5120;break}Ob(this.h,f,u|w<<8);if(Rb(this.h)){k=8192;break}f+=2;if(p>=l.ia&&(n=null,++d>=l.S&&(d=0,++c>=l.Y&&(c=0,++b>=l.U)))){k=5120;break}}return g(k,b,c,d,e,f)};
-h.xd=function(a,b,c,d,e,f,g){var k=0,l=a.da,n=null,p;l||(k=5120,e=0);for(;e--;){var u=Mb(this.h,f);if(Rb(this.h)){k=8192;break}f+=2;if(!n){n=a.da.seek(b,c,d+1,!0);if(!n){k=5120;break}p=0}if(!a.da.write(n,p++,u&255)||!a.da.write(n,p++,u>>8)){k=5120;break}if(p>=l.ia&&(n=null,++d>=l.S&&(d=0,++c>=l.Y&&(c=0,++b>=l.U)))){k=5120;break}}return g(k,b,c,d,e,f)};h.Wc=function(){return this.L&65535};
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+function Kf(a,b){if(0<=b&&b<a.b.length){var c=a.b[b],d=a.o.listDisks;a=a.o.listDrives;if(d&&a&&d.options&&a.options&&(a=ja(a.value),c=c.ib?"?":c.Ca,!isNaN(a)&&a==b)){for(b=0;b<d.options.length;b++)if(d.options[b].value==c){d.selectedIndex!=b&&(d.selectedIndex=b);break}b==d.options.length&&(d.selectedIndex=0)}}}function Qf(a,b,c){var d=a.b[b];if(d.da||!1===c)d.xa="",d.Ca="",d.da=null,d.ib=!1,c||(a.G("Drive RL"+b+" unloaded",c),Kf(a,b))}
+function Mf(a,b){var c=0;b||(b=[]);a.L=b[c++]||0;a.v=b[c++]||0;a.c=b[c++]||0;a.i=b[c++]||0;a.m=b[c++]||0;a.w=b[c]||0;for(b=0;b<a.b.length;b++){var d=a.b[b];void 0===d&&(d=a.b[b]={});c=a;d.zb=b;d.wb=d.ib=!1;d.name=c.za;d.U=512;d.Y=2;d.S=40;d.ia=256;d.xb=!0;d.le=0;d.ke=0;d.Lb=1;d.ic=d.S;d.Qb=d.ia;d.oe=0;d.pe=null;d.da||(d.Ca="");d.status=29|(512==d.U?128:0)}return!0}
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