> On Aug 9, 2017, at 12:08, Fred Cisin via cctalk <cctalk@classiccmp.org> wrote:
> <rant>
> </rant>

I'm keeping your rant as reference material. Thanks!

The Tandy Portable Disk Drive (TPDD) for the Model 100 series is one of the 
odd-ball "rare" configurations: 3.5", 40 track (later, 80 track on the TPDD2), 
single sided, two (!) sectors of 1280 bytes each per track. Disk capacities are 
nominally called "100k" or "200k". I have not yet tried examining a TPDD disk 
on some sort of imaging setup to get insight into its low-level format, but 
that's on my growing "one of these days" list. The drives had internal 
controllers and brains, and connected to the computer over an RS-232 interface.

Mark J. Blair, NF6X <n...@nf6x.net>

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