XENIX QIC Tape Questions

[Michael P. Deignan]

I have a few questions on XENIX tape drives which maybe someone can address.
Using an Archive 60mb Internal system, in the /dev directory, we have the
following devices defined:

crw-rw-rw-   2 root     superuser 25, 32 Dec  2 15:28 erct0
crw-rw-rw-   2 root     superuser 25,  8 Dec  2 15:28 nrct0
crw-rw-rw-   2 root     superuser 25, 24 Dec  2 15:28 nrct2
crw-rw-rw-   2 root     superuser 25,  0 Dec 24 14:17 rct0
crw-rw-rw-   2 root     superuser 25, 16 Dec  2 15:28 rct2

Now:

	1. What is the difference between RCT0 and RCT2?

	2. "ERCT0" is a device for a tape system w/ error correction, correct?

	3. What are "NRCT#" and why use one of them over the RCT#
	   counterpart?

These have been sitting in my mind for awhile and nobody here seems to know
the answer.

MD
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