Re: Hooking display file I/O

From: Steve Richter <srichter@AutoCoder.com>
> >The way to do this is to monkey with a local copy of SEPT, instead of with
> >the global system-wide SEPT. The PCO (Process communication obj)
> >contains a pointer to the SEPT to be used by this process. Changing
> >that pointer to point to your own copy (which you make with a single
> >CPYBWP-instruction) requires you to set the tag bit for the pointer.
>
>
> Why do you have to set the tag bit?

to make it a pointer. But it depends on how you change the
bytes. I guess that you might use CPYBWP that preserves
the tag bit. What I meant was that you had to be sure not
to clear the tag bit.




+---
| This is the MI Programmers Mailing List!
| To submit a new message, send your mail to MI400@midrange.com.
| To subscribe to this list send email to MI400-SUB@midrange.com.
| To unsubscribe from this list send email to MI400-UNSUB@midrange.com.
| Questions should be directed to the list owner/operator: dr2@cssas400.com
+---