Path: utzoo!mnetor!uunet!tektronix!tekgen!tekigm2!timothym
From: timothym@tekigm2.TEK.COM (Timothy D Margeson)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Determining interleave
Message-ID: <2555@tekigm2.TEK.COM>
Date: 22 Feb 88 18:57:08 GMT
References: <3942@umn-cs.cs.umn.edu>
Reply-To: timothym@tekigm2.UUCP (Timothy D Margeson)
Distribution: na
Organization: Tektronix, Inc., Beaverton, OR.
Lines: 26

In article <3942@umn-cs.cs.umn.edu> schmitz@umn-cs.cs.umn.edu (Thomas Schmitz) writes:
>Is there any way to determine the interleave factor of the disk
>on an AT clone, short of asking the person who formatted it?
>-- Tom Schmitz

Hi,

An emphatic NO is appropriate here. You can guess by using past experience tho.

220 to 250 kilobytes/sec. rates an interleave of 2 on an AT type controller.
160 to 190 kilobytes/sec. rates an interleave of 3 on ditto,
130 to 150 kbps is a 4:1. These three are the most commonly used numbers.

A special track buffering controller (WD1006) that will allow 1:1 interleaves
will yield transfer rates upwards of 400 kbps.

Use a program like CORETEST to see what your transfer rate is, then go from
there.



-- 
Tim Margeson (206)253-5240
PO Box 3500  d/s C1-937                          @@   'Who said that?'  
Vancouver, WA. 98668
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