You can download WordStar 3.0 from here. You need to download and unzip the file WS30.ZIP on a desktop system. Then copy the files to the CP/M system, which should be the following:
INSTALL.COM MAILMRGE.OVR MERGPRIN.OVR WIMSGS.OVR WS.COM WSMSGS.OVR WSOVLY1.OVR WSU.COM
As mentioned in the video, you need to "patch" WordStar to support a non-standard terminal like the VT100/ANSI terminal that the Briel Altair 8800 emulates. The basic procedure is to run INSTALL.COM and enter the codes. It is a little tedious, but once done you have a version that works with the Briel Altair 8800. A complete transcript of the session is given at the end of this blog post. Thanks go to one of the Briel forum users for coming up with the patch codes.
Here is the list of patch values:
Symbol Address Value(s)
HITE 0248 28
WID 0249 50
CLEAD1 024A 2,1B,5B
CLEAD2 0253 1,3B
CTRAIL 0258 1,48
LINOFF 025E 1
COLOFF 025F 1
ASCUR 0260 2
ERAEOL 026D 3,1B,5B,4B
LINDEL 0274 4,1B,5B,31,4D
LININS 027B 4,1B,5B,31,4C
IVON 0284 4,1B,5B,31,6D
IVOFF 028B 4,1B,5B,30,6D
TRMINI 0292 2,1B,63
IDTEX 018F 20,56,54,2D,31,30,30,20,20,20,20,20,20,20,20,20
20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20
Once configured, run WS to launch WordStar.
A Google search will turn up copies of the complete WordStar 3 manuals.
You may also want a shorter command reference. A couple can be found here and here.
Don't forget to put the terminal in WordStar arrow key mode using
