I have uploaded to Github a few different repositories under the user name "Tek-User".
You can use google for "github two-user".
There are 4 project repositories. One on writing new software for the 2402.
Another on repairing an old 2402 and getting it working. And then upgrading the 2402 to a 133MHz 586 EBX motherboard and the complexities that are encountered.
Another project ports the new programming from the first project listed here and placing it on an arduino. A tiny arduino can largely replace the entire 2402 as an embedded system with the user interface through the scope.
I have found and placed in these repositories various software packages relating to the 2402.
One software package I have NOT found is the Tektronix "Program Development Software". This apparently has the source code used for the "dso-sh" and "dos-app" software packages provided by Tektronix. I have searched for the development software by thoroughly googling all variations and themes of this topic and found nothing.
Does anyone here have any leads for the Program Development Software?
-Tony