Deciphering an odd floppy disk format.

Fred Cisin cisin at
Mon Feb 15 20:16:48 CST 2021

Thanks for the brochure.
That looks like a fascinating project!
Computerworld mentioned it occasionally in 1980.

I love that "Pl/1 will soon emerge as the dominant language of 

If you haven't already exhausted such leads (apologies if you already 
have), some trivial GOOGLE'ing turned up the name (and autobiography) of a 
guy who designed one of their disk controllers:

Sorry, NO technical details of the controller that he designed.

On Mon, 15 Feb 2021, Mattis Lind wrote:
> Well. Now this is NOT a standard 179x that has written this. As I mentioned
> early on in this thread it was not at all possible to read the disks with a
> standard controller. The bit rate was off by quite a bit and the general
> format is different. So this is not necessarily a CRC at all. The machine
> that has written these is the Q1 Lite computer. A very odd mid-seventies
> system.

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