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From: aslater@jocko.bri.hp.com ()
Subject: Re: HP C1533A DAT tape ?
Sender: news@bri.hp.com (News User)
Message-ID: <Dzrx1z.9xv@bri.hp.com>
Date: Thu, 24 Oct 1996 09:29:59 GMT
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References: <stanbDzLuJv.CEo@netcom.com>
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Stan Brown (stanb@netcom.com) wrote:
: Can I use my HP C1533A Dat tape with my FreeBSD system ?
No particular reason why not, although its not an officially supported
platform.
: I have an Adaptec 1542? SCSI board installed with nothing on the
: bus yet.
: If I can, what device should I use ? Will this device enable
: the compresion on the tape drive ?
Maybe :-)
Depends how freebsd does DC control. Certainly I haven't found any
problems with NetBSD, but that's just defaulting to having DC on
and not switching it off. If you _do_ need to twiddle DC on/off you
have a few options:
1. hack st.c and put in relevant quirks / code to get yourself DC control
by device file used (code for this isn't hugely difficult)
2. twiddle the first two dips on the underside if you have to force it to
do/not do DC by default (ie turn off host control).
Last I poked round either the {Free,Net}BSD st.c neither had code which
would obviously turn DC off. It might turn out that as part of sending
a mode select it might turn it off if you had a switch setting that
allowed DC control by density, but I doubt that -- the standard dip
setting on the underneath (11011111) should do fine.
regards,
al
(not speaking for HP..)