Fixed 36-bit multiplication in the expression parser so that, within the PDP-10 environment, it produces the same 36-bit results that a PDP-10 would produce (important for MACRO-10 compatibility)

modules/pdp10/lib/debugger.js

@@ -507,6 +507,21 @@ class DebuggerPDP10 extends Debugger {
         }
     }
 
+    /**
+     * evalMUL(dst, src)
+     *
+     * Overrides the standard multiplication function with one that honors PDP-10 semantics and precision.
+     *
+     * @this {DebuggerPDP10}
+     * @param {number} dst
+     * @param {number} src
+     * @return {number} (dst * src)
+     */
+    evalMUL(dst, src)
+    {
+        return PDP10.doMUL.call(this.cpu, dst, src, false, true);
+    }
+
     /**
      * parseAddr(sAddr, dbgAddr)
      *