Re:
> 2) I've tried the instrinsic call with FindKey specified as an address
> (preceeded with "&"), both qualified with an instance/positional pointer
> "[0]" and not; and as a variable (no preceeding "&").
...
> The error doesn't change.  It is consistently "186 - Invalid Key Length".

CSEQ says:

Procedure FFINDBYKEY (
   filenum      :        int16   ;        {R26}
   keyvalue     : anyvar record  ;        {(skip R25)
                                           R23, R24}
                                          {Address type = LongAddr}
   keylocation  :        int16   ;        {SP-$0032}
   keylength    :        int16   ;        {SP-$0036}
   relop        :        int16   )        {SP-$003a}
      { CCE: ok                                                  }
      { CCG: (past EOF or before beginning)                      }
      { CCL: error (I/O err; relop not satisfied, key not found)       }
   {relop values:                                                      }
   {   0 --> equal                    (= )                             }
   {   1 --> greater than             (> )                             }
   {   2 --> greater than or equal to (>=)                             }

I'd try:

   logon as user with PM (or run a "god" program)

   :run prog; debug
   b FFINDBYKEY
   c
   ... do whatever is necessary to get the FFINDBYKEY to be called.

   = r26
...should be your file#

   = r23.r24
... should be a valid 64-bit address.

   dv r23.r24, 10, b
... should display the key value in hex and ASCII (and, incidentally,
validate the address for us)

   dv sp-$3a, 3
... should show the last 3 parameters.  Will be of the form:

     xxxxnnnn xxxxnnnn xxxxnnnn
where we don't care what the "xxxx" values are.

Stan Sieler                                           [log in to unmask]
www.allegro.com/sieler/wanted/index.html          www.allegro.com/sieler