Steve, This is the Radio Shack Diskette Drive Alignment video for their Service Center. It was uploaded by Peter Cetinski from the "Trash 80 Podcast" and "Vintage Computer Forum". It covers the process involved, so you can see what is involved (if you didn't already know).
The announcer also shows the "TDC" program, which "MICTDC" is likely based from. Instructional Video: Radio Shack TRS-80 Floppy Disk Drive Alignment - YouTube <https://www.youtube.com/watch?v=BPy4Yf37XRE> Regards, Peter > > ------------------------------ > > Message: 8 > Date: Sun, 4 Apr 2021 01:46:46 -0700 > From: Peter Noeth <[email protected]> > To: Model 100 Discussion <[email protected]> > Subject: Re: [M100] TPDD alignment disk / servicing / MICTDC > Message-ID: > < > cadg-ngutjibbkuj3n1ytsuuadmyupxqfc4twyoujguzjmgp...@mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > Having done a lot of floppy drive alignments back in the day (RS Model > 1,3,4 , Osborne, Kaypro, 8", ...) I am sure that the TPDD would be the > same. The alignment diskettes had special analog signals on several tracks > ("Eye Pattern" , Azimuth), that were used to align the head(s) to a known > location, once the Track 0 sensor was set. There were different diskettes > made, depending on the TPI (Tracks Per Inch), Density (FM or MFM), and > Single or Double Sided. I used to have the alignment diskettes, but in the > different moves over the years, they have disappeared. I do still have my > Dysan PAT 2+ Tester to command and exercise the disk drives out of the > computer. > > <snip> > >
