I spent some time looking at the WORDSTAR.TD0 image and realized that it was actually the HP-150 version and the HP Museum site was pointing to the same image for both the HP-150 and HP-86/87 CP/M versions. I sent an email to Jon there and got a quick reply with the correct image which has now been renamed WORDSR80.TD0 there for the HP-86/87 CP/M version. The page there has now been updated to point to the correct image version.
http://www.hpmuseum.net/display_item.php?sw=270
http://www.hpmuseum.net/software/WORDSR80.TD0
I was able use Teledisk to write the WORDSR80.TD0 image out to a physical 3.5-inch floppy (the web page for the HP-86/87 CP/M version of WordStar 3.0 shows a 5.25-inch floppy picture although the text does say 3.5-inch) and then read that
physical 3.5-inch floppy back into a plain disk image using HPDir and then access that disk image just fine from my HP-86B CP/M system as an emulated disk using HPDrive. Now I can run WordStar on my HP-86B.
-Glen
C:\HPDIR>hpdir -query
Info: NI TNT4882 GPIB hardware found at location 0x2C0 [Board 0]
Scanning devices on GPIB:
(0) HP82901/HP9121 (identify=$0104) at address 6
Sending parallel poll query...response=00000000
C:\HPDIR>hpdir -dup 706: WORDSR80.DSK
record 1119 (100%)
C:\cpmtools>cpmls -l -f hp87cpm WORDSR80.DSK
0:
-rw-rw-rw- 12544 Dec 31 1969 example.txt
-rwxrwxrwx 32896 Dec 31 1969 install.com
-rwxrwxrwx 15872 Dec 31 1969 ws.com
-rw-rw-rw- 27904 Dec 31 1969 wsmsgs.ovr
-rw-rw-rw- 34048 Dec 31 1969 wsovly1.ovr
-rwxrwxrwx 15872 Dec 31 1969 wsu.com
C:\HPDRIVE>hpdrive -9121 -a 4 -l 2 -d -n 2 HP87CPM.DSK WORDSR80.DSK
Info: HPDrive 4.0 beta4 (2012/04/09)
Info: NI TNT4882 GPIB hardware found at location 0x2C0 [Board 0] (3c)
File HP87CPM.DSK is write protected, mounting in read-only mode.
File WORDSR80.DSK is write protected, mounting in read-only mode.
9121 drive ready, listening at GPIB address 4 (0.27 0.27 MBytes)