Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!cs.utexas.edu!sdd.hp.com!ucsd!ucbvax!XEROX.COM!"Rex_E._Robards.DlosLV"
From: "Rex_E._Robards.DlosLV"@XEROX.COM
Newsgroups: comp.os.cpm
Subject: re: floppy drive hardware
Message-ID: <900507-072635-10021@Xerox>
Date: 7 May 90 14:22:36 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Reply-To: rroba.dloslv@xerox.com.DlosLV
Organization: The Internet
Lines: 12

In message-id 9DD0D3D47EDF602A04@uwplatt.edu, Lance Tagliapietra asks,
> (1) What is the difference between 720K and 1.44M 3.5 inch drives.

1.44 MB drives have 18 sectors per track.  720 KB drives have 9 sectors per
track.

>(2) What is the pinout for 3.5in drives. (a pinout for 5.25in is given)

The pinout for 3.5" drives is the same (3.5" drives are indistinguishable
from 5.25" drives from a hardware perspective).

Rex (rroba.dloslv@xerox.com)