With many thanks to Bill Sgambati for providing his disks to me to archive, the Altair community now has access to Timesharing BASIC 2.0! Version 2 is an important upgrade from version 1.x in that it adds programmed disk I/O as present in single user Disk BASIC. Timesharing BASIC 1.x could load and save programs from disk, but programs could not do disk I/O.
Bill also provided a real-time-clock disk for BASIC. I'll be adding more information in a readme file for that disk soon.
The new disk images are available in the BASIC folder on the support page. The Timesharing BASIC 2.0 user's manual has also been added to the Altair Manuals link on the support page.