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Re: Help Setting Up SCSI Chain (HD & CD on an Apple IIgs)



Bill Garber wrote:
"Tempest" <tempest@atariprotos.com> wrote in
message
news:1159894545.678486.16260@i42g2000cwa.googlegro
ups.com...

David Chiu wrote:

Termination should be applied to the last
device in the chain.

Right, I thought that was correct.  Does that
mean I should have the terminator on the unused
port of the CD drive?  Also, does the HD need
to have a higher SCSI ID than the CD drive since
I want it to boot first?



Yes, the terminator on the last drive, if it's
a pass-thru you put it between the cable and
drive,
and a stop type goes on the spare port.

Actually, a pass-through terminator can be used as an
"end" terminator, too--you don't have to connect anything
to it's socket.

Attaching it to the other drive socket actually gets the
terminator about 6" closer to the electrical "end" of the
bus, which is theoretically better and practically irrelevant.

It is also important that something on the bus provide termination
power--which could be the controller card or either of the drives.
Multiple devices providing term power is redundant, but should be
OK.

Multiple terminations (except at each end) are a bad thing.

-michael

New, faster SUDOKU v2.0 solver for Apple II's!
Home page:  http://members.aol.com/MJMahon/

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