On Sep 14, 2020, at 10:18 PM, RETRO Innovations <go4re...@go4retro.com> wrote: > Is there a reference somewhere that describes the TPDD protocol is a bit more > detail?
I had pretty good luck with the original manual: https://archive.org/details/tandyportablediskdriveservicemanual263808stext My understanding is that some clients do things outside the specification in the manual, but the manual is a fair place to start.
