Added lots of PDP-10 compare/increment/decrement/skip/jump instructions

modules/pdp10/lib/cpustate.js

@@ -486,11 +486,10 @@ class CPUStatePDP10 extends CPUPDP10 {
     }
 
     /**
-     * setPC()
+     * setPC(addr)
      *
-     * NOTE: Unlike other PCjs emulators, such as PCx86, where all PC updates MUST go through the setPC()
-     * function, this function is nothing more than a convenience, because in the PDP-11, the PC can be loaded
-     * like any other general register.  We fully expect this function to be inlined at runtime.
+     * Updates the PC register with the new address after masking it with ADDR_LIMIT (in case the
+     * new address was the result of an unchecked calculation).
      *
      * @this {CPUStatePDP10}
      * @param {number} addr