#: 3574 S10/Tandy CoCo
    18-May-90  21:23:12
Sb: #3566-#2nd Hard Drive Help
Fm: Mark Griffith 76070,41
To: JC Hoit 73127,2213 (X)

JC,

On the ST-213 drive there is a set of jumpers located next to the 34 pin edge
card connector.  The two pins (one on top of the other) right next to the
connector should already have a jumper between them.  This sets the drive up as
drive 0.  What you need to do is move that jumper one over to set it up as
drive 1.

As for the terminating resistors, it depends mostly on the controller and drive
combination whether or not any are needed.  About 6 or 7 years ago, most drive
controllers and drives needed one to be there at the end of the "chain". 
Nowadays, most controller/drive combinations really don't care.  The name
"terminating" resistor is misleading, much the same as it is on SCSI busses. 
They're really nothing more than pull-up resistors to insure, get this, that
the logic levels on the lines drop (yes, not rise) to 0.

If you follow the advise that most people give, that you need at least one on
the last drive, you can't go wrong.  I've never seen a situation where having
one caused problems...although I have seen situations where only one didn't
work right and two were needed.

BTW: Since you are going to have two hard drives, you might want to look into
getting my hard disk backup program in DL9.  It works pretty good as an
automatic backup utility from the "main" drive to the second on. If you also
have Pete's CRON utility, you can set it up to automatically do an incremental
backup of your /h0 drive to /h1 in the middle of the night.  It sure is nice to
know all your work is backed up for you.

Mark

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