Path: utzoo!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!uwm.edu!linac!att!ucbvax!QMBRIDGE.CALSTATE.EDU!Joe_Luzzi.FULLERTON_CC
From: Joe_Luzzi.FULLERTON_CC@QMBRIDGE.CALSTATE.EDU (Joe Luzzi)
Newsgroups: comp.sys.apple2
Subject: Re- Much about Quantums and
Message-ID: <9103150330.AA02173@apple.com>
Date: 15 Mar 91 03:32:00 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 63


                                                               Time: 10:24 AM
                                                               Date: 12/21/90
Subject:  Re: Much about Quantums and


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>>First, the prodrives don't do low-level formats - they're already
>>formatted at 1-1 interleave and they have a disk-cache built onto the
>>controller (I think it's 32k big). Anyway, one doens't need to do
>>low-level formats on Quantum Prodrives. If you try, it comes right
>>back instantly saying "Success."

That's exactly what happened, Dave. When I tried to format the drive on My
IIgs, it came back instantly saying success, or that the drive was write
protected, or format failure. On my Mac, I think it actually did a low-level
format because it took a few minutes (this was using the supplied mac
utilities).  

>>Make sure there is only ONE set of terminating resistors at each END of the
>>chain.

I'm sure I had only one set of terminators on each end of the chain. 

>>Anyone who tells you quantum drives don't work on a // is full
>>of it - Apple brand drives are Quantum mechanisms!

That's why I just sent the Quantum 210 back, rather than argue with them
(MacAvenue).

>>What you *do* need to do is set the SCSI ID of the drive correctly.

Each of the drives have push buttons to set the SCSI ID and they were both
different, the Apple DMA SCSI card being SCSI ID 7.

I don't know why the quantum didn't work.  I have a Rodime 140 Plus hooked up
to my Apple DMA SCSI card now and it works fine.  The Rodime has an external
terminator and the SCSI cable is about 3-4 feet long.  I then wanted more disk
space and ordered the Protege Quantum from MacAvenue.  I remove the terminator
from the Rodime and connected up the Protege drive using a peripheral cable
from Apple that's about 4 feet long.  The Protege drive would not work all
alone on the chain (computer to Protege only).

So, that's the story.  I'm gonna try another Quantum from some other hard drive
company or maybe just get a Chinook drive (Connor based mechanism).

Thanks all for your input.


>>Dave Whitney
>>Microsoft
>>My own opinions. I wrote Z-Link and BinSCII.

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Joe M. Luzzi

Internet: Joe@CSU.FULLERTON.EDU
BITNET:   LJMLUZZ@CALSTATE.EDU

GENIE : JM.LUZZI
AOL   : JMLUZZI
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