problems installing Archive tape driver

[Larry Williamson]

In article <331 at siswat.UUCP> buck at siswat.UUCP (A. Lester Buck) writes:
>I recently upgraded to Microport SystemV/AT V2.4, mainly because
>this release includes drivers for cartridge tape backups that
>[...]
>I uncommented the "ar" entries in master and dfile.wini.
>IRQ 5 is vector 37 in master, which was also being used with "lp",
>so I removed the 37 from the lp entry, leaving lp as using only 39.
>I made a new kernel and installed it.

I had a similiar problem when I tried to install my tape drive a
few months ago. I was dealing with Jas at the time. He found out
that it is necessary to define in your dfile.wini file that you have
a maximum of 2 lineprinters even though you really only have one.

We were not able to determine why there is an interdependancy between
the lp driver and the tape driver. 

Here are my master and dfile.wini entries for the offending devices.

* @(#)master	2.3
*                                       blk     chr
* name	vector	hndlrs	type	prefix	maj	maj	max #	struct decl.
*-----	------	------	----	------	---	---	----- 	----------------
lp	39	ocwis	c	lp	0	7	3
ev	37	ocrw	c	ev	0	9	1

* @(#)dfile.microport	2.3
lp	0	2
ev	0	1

We have only one lineprinter and only one tape drive. You must state that
you have 2 line printers in your dfile.wini.

Good luck,
    Larry

-- 
Larry Williamson  -- Focus Automation Systems -- Waterloo, Ontario
                       watmath!focsys!larry       (519) 746-4918