Xref: utzoo comp.sys.att:6546 comp.sys.ibm.pc:29259
Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!att!cbnewsc!gpw
From: gpw@cbnewsc.ATT.COM (george.p.wilkin)
Newsgroups: comp.sys.att,comp.sys.ibm.pc
Subject: Re: AT&T 6300+ add-in disk problem!
Message-ID: <982@cbnewsc.ATT.COM>
Date: 24 May 89 22:49:14 GMT
References: <1537@cunixc.cc.columbia.edu>
Organization: AT&T Bell Laboratories
Lines: 23

From article <1537@cunixc.cc.columbia.edu>, by wilson@cunixc.cc.columbia.edu (Samuel Wilson):
> Ahem.  This friend of mine...  has an AT&T 6300+ with an extremely
> awkward disk configuration: it has a Western Dig.  WX1002 controller
> (i.e. an 8-bit card), a miniscribe 40 meg drive, and DiskManager
> software.  Under AT&T DOS 3.2 the performance is *terrible* -- about
> .5 the speed of an IBM-XT according to Norton SI v.4.  The disk is
> fast enough, and the computer is fast enough, but the controller card
> / Diskmanager software / DOS version / ROM version software is a disaster.

DO YOU(er I mean your friend) HAVE THE CORRECT DISK INTERLEAVE

I have found this to be sooo far off befor that you would do well to check it.

How do I do this??   Spinwrite or the mace utilities Hoptimum will do it
for you......   YOU WILL HAVE TO BACK UP DATA FIRST....

Interleave on 6300s with 40 megers has been in the 4-7 range.  A plus
could  go as low as a 2 interleave.     DON'T assume someone did this
for you.  If you must use external rom code also consider a program
called RAMIT, it takes the romed code and caches it into ram on the motherboard
improving performance greatly..

george