Tandon TM-100-1 electronics repair

Warner Losh imp at bsdimp.com
Fri Apr 28 00:56:06 CDT 2017

On Thu, Apr 27, 2017 at 11:49 PM, Chuck Guzis via cctalk
<cctalk at classiccmp.org> wrote:
>> 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...)
> I'd still recommend Dave Dunfield's ImageDisk--it's got several good
> functions--test RPM, Clean heads, check alignment, etc.
> Runs on MS-DOS and, AFAIK, even on the 5150.
> I'm actually a bit surprised that nobody's done a floppy exerciser for
> the lowly Arduino.  Easy enough--if you use the timer "capture" feature
> on the AVR, you can even do simple disk read testing.

KryoFlux has something like that. https://www.kryoflux.com/ has the
details, but it is commercial.


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