The author shares their experience of working with an old version of 86-DOS and their discovery of a disk image of 86-DOS 1.14. They explain how they attempted to run the older version using the SIMH simulator, but encountered compatibility issues with the Tarbell disk controllers. However, they realized that they could adapt the Tarbell disk to use the Cromemco disk controller instead. The author provides instructions on how to make the necessary modifications and assemble the modified source files. They also highlight the convenience of using existing SIMH compatible 86-DOS disk to enable successful booting. Ultimately, they successfully run 86-DOS 1.14 on the emulated Cromemco controller in the SIMH environment.
https://www.os2museum.com/wp/tarbell-to-cromemco/