Re: Hooking display file I/O

["Leif Svalgaard" <leif@xxxxxxxx>]

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.




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