Early 3.5" Floppy Drives - test-drb@ccmp.vtda.org

16 Dec 2005

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Subject: Re: Early 3.5" Floppy Drives
   From: ard at p850ug1.demon.co.uk (Tony Duell)
   Date: Fri, 16 Dec 2005 00:49:19 +0000 (GMT)
     To: cctalk at classiccmp.org

  Any PC controller that can do 720k 3.5"
format can do 
 8" as it's the same data rate.  it's not what chips was  
I don;'t think you mean that!. The 720K 3.5" format is the same data rate 
as the 360K 5.25" format. You mean any controller that can do the 1.44M 
3.5" format (or for that matter the 1.2M 5.25" format), surely. Those are 
the same as the 8" data rate.

  used it's how it was used. 
-tony 
We've been through this already  Your two hours behind. ;)

Yes, the data rate for 360k 5.25 is 250kbS, same for 3.5" 720k
and ALSO 8" SINGLE DENSITY.  I'll bet you read that assuming 
double density.   Look at the table I put up.

Really, I have many systems with floppies, most all with 765 based
controllers of my design.  I've supported others in their design.
While my typing is subject to a coordination problem and crappy
PC keyboards my main fun is leaving out just enough to see someone 
jump to say.. but but but..!

Allison