Date   : Fri, 10 Feb 1984 17:37:34 PST
From   : DGILBERT.ES@PARC-MAXC.ARPA
Subject: WordStar with ZCPR2

               USING WORDSTAR UNDER ZCPR2

Programs like WordStar are a problem, in that one would like to keep 
only 1 set of files and be able to use tham from any USER area.  
WordStar always looks for its overlay files on drive A, if not on the 
default drive.  Unfortunately, there is no provision for specifying 
the USER area, so if your in drive G, user 7, WordStar will only 
check drive A, user 7 for the overlays if not on drive F, user 7.

There is a solution.

A public domain program called 'DUPUSR' will create a duplicate 
directory entry on your CP/M disk, but a new User Number.  So put the 
WordStar files on Drive A, User 0 (physical drive E).  Create 
duplicate entries for the overlay files for A1, A2, A3, ... to your 
highest user number used.  Each directory entry actually points to 
the same allocation numbers, so there is only one actual copy of the 
file.

This system works fine.  I can be in any user number, on any disk, 
and run WordStar without a problem.

There is only one danger.  If you ever erase one of the directory 
entries that are duplicated in another user area, CP/M will assume it 
can reuse the allocation groups thus 'freed', unless you do a disk 
reset by 'Warm Boot'.  By always doing a 'warm boot' after erasing an 
entry, no problem occurs.  It's better than having duplicate files in 
every user area and wasting lots of good ol' disk space.

Doug.