Tandon TM-100-1 electronics repair

[Mike Loewen]

On Thu, 27 Apr 2017, Ethan Dicks via cctalk wrote:

> Additionally, for a testing framework to poke signals through the
> drive for debugging during the repair, what's a good platform?  A PC
> running MS-DOS?  The TRS-80 Model 4 itself?  Besides doing
> directories, are there any good bits of software anyone can recommend
> for exercising floppy drives on a sub-system-by-subsystem basis?
> (move the heads, do a read, do a write...)

    You should check out a couple of disk utility programs for the Model 4:

Super Utility 4/4P

http://tim-mann.org/trs80/su4a.zip (CMD version)
https://fjkraan.home.xs4all.nl/comp/trs80-4p/dmkeilImages/util/97-0005.ace (bootable version)
http://tim-mann.org/trs80/doc/su4man.pdf

Hyperzap 3.2C

https://fjkraan.home.xs4all.nl/97-0002.ace

    If you hook up a working drive to boot from, one of those should help 
to exercise/exorcise the bad drive.  :-)


Mike Loewen				mloewen at cpumagic.scol.pa.us
Old Technology				http://q7.neurotica.com/Oldtech/