Date   : Sun, 20 Oct 1991 08:32:18 GMT
From   : bobsbox!gnat!cmcewen@rutgers.edu (Chris McEwen)
Subject: Re: Media-Master

rzh@ICF.LLNL.GOV (R. Hanscom) writes:
> The folks at Sydex (creators of 22disk) told me that the FDC chip
> used in most PC's cannot read or write single density with sector
> size of 128b.  Supposedly a flaw in the chip logic.  I have no way
> to verify this, and just pass it along as a potential topic of
> discussion.

That information is correct and is generally the cause when one cannot 
use a floppy formatted on a PC using one of the common tools (Uniform-PC, 
22DISK, Media Master, etc). There are two solutions. Get a floppy 
controller for the PC that can write single density or format on a native 
machine.

It should be noted that many CP/M formats will format the first track in 
single density and the rest in double. The Xerox 820 series all did this. 
Uniform-PC handles this format very well once the disk is formatted in a 
machine that can write that first track.

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