Me too - great rant.

-----Original Message-----
From: Mark J. Blair [] 
Sent: Thursday, August 10, 2017 9:56 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: The Name of the disk (Was: Disk imaging with IMD - question

> On Aug 9, 2017, at 12:08, Fred Cisin via cctalk <>
> <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 <>

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