Newsgroups: comp.sys.apple2
Path: utzoo!utgpu!utstat!philip
From: philip@utstat.uucp (Philip McDunnough)
Subject: Re: What's wrong with my hard drive
Message-ID: <1991May5.081802.6926@utstat.uucp>
Organization: U of Toronto Statistics
References: <52411@apple.Apple.COM> <1991May4.015842.11339@utstat.uucp> <52437@apple.Apple.COM>
Date: Sun, 5 May 1991 08:18:02 GMT

In article <52437@apple.Apple.COM> mattd@Apple.COM (Matt Deatherage) writes:
>In article <1991May4.015842.11339@utstat.uucp> philip@utstat.uucp (Philip McDunnough) writes:
>>In article <52411@apple.Apple.COM> mattd@Apple.COM (Matt Deatherage) writes:
>>
>>>When using a High-Speed card, you need a terminator at the end of the chain
>>>(or no terminators if you only have one device).
>>
>>Hmm...what if you have only one device( a hard drive) and you use a
>>terminator with the High-Speed card? Can it harm anything?
>>
>>Philip McDunnough
>
>Hmm.  Honestly?  I don't know.  My gut says "don't do it," though.

Sorry to belabor the point but this is rather unsettling. It was my
impression, and is in virtually every HD/SCSI card manual, that you
needed 2 terminators in a SCSI chain. Usually one at the beginning 
and the other typically, though not necessarily, placed at the end.
The Rev C SCSI card has no terminator, while the High-Speed one is
rumoured to have one[ I own a High-Speed one]. That would seem to
imply that you would need 2 terminators with the Rev C card, and only
one with the High-Speed card. 
 
I have been using a SCSI HD with a ROM03 and one terminator since day
one. Nothing has ever happened to the hard drive, but I doubt that
my TWGS has enjoyed the trip to Texas so many times.
 
Is there a definitive word on this? I have received so many different 
replies since reading MD's message( replies from dealers, friends,
colleagues,etc..) re whether or not to remove that terminator that it's
become kind of funny.
 
Philip McDunnough
University of Toronto
[my opinions,etc...]