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- Newsgroups: comp.unix.amiga
- Path: sparky!uunet!sun-barr!ames!haven.umd.edu!darwin.sura.net!convex!egsner!lerami!amix!mirchi!janc
- From: janc@mirchi.uucp (Jan Carlson)
- Subject: Re: Help with Caliper Tape Drive
- Message-ID: <1992Sep14.182924.808@mirchi.uucp>
- Date: Mon, 14 Sep 1992 18:29:24 GMT
- References: <1992Sep4.164335.12861@phillip.edu.au>
- Organization: Another Amiga UNIX System
- Lines: 44
-
- In article <1992Sep4.164335.12861@phillip.edu.au> t9014199@phillip.edu.au writes:
- >Hi all,
- >
- > The Tape Drive functions correctly under AmigaDos using TapeStore.
- > Under unix using the following command:
- >
- > "find /home/dazza -depth -print | cpio -ocv -o > /dev/rmt/4"
-
- Try "find /home/dazza -depth -print | cpio -ocvC 128000 -O /dev/rmt/4"
- or "find /home/dazza -depth -print | cpio -ocv | dd bs=64k of=/dev/rmt/4"
-
- This will write larger buffers to the tape and the tape drive will not
- have to write, stop, backspace, stop,
- write, stop, backspace, stop, etc. nearly so much.
- This greatly reduces the chances of locking up.
-
- > The names of all the files in the directories are displayed on the
- > screen, the Tape Drive spins for awhile, then the Machine freezes!
- > A reboot is then required.
- >
- > The Tape Drive is set to Address 4 as needed and is at the end of
- > my SCSI bus, which has the 200mg Unix hd, a 100mg amigados hd and
- > then finnally the tape drive.
- >
- > The Tape Drive (as far as I know) is not terminated. Could that be
- > a problem?
-
- If it is on the end of the scsi bus, it NEEDS terminator resistors, either
- internal or external, not both.
-
- On the Caliper tape mechanism, internal terminators consist of two resistor
- packs, about 12 pins each. They are plugged into sockets on the
- underside of the mechanism. They are parallel to each other, are near
- the door of the mechanism, and point to the door of the mechanism.
- The resistor packs will have a 90 degree bend in each pin: each pack
- is plugged in and the bent over flat to save space.
-
- The resistor packs are polarized: one end is marked with a dot. The dot
- indicates pin 1. Pin one must go into socket one on the drive.
-
- When terminators are needed (at the end of the scsi bus), use
- EITHER the internal ones described above,
- OR an external terminator plug like that supplied with A3070's and a3000T's.
- NOT BOTH.
-