Early 3.5" Floppy Drives

[Allison]

>
>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