Installing UNIX on an 11/94

Johnny Billquist bqt at Update.UU.SE
Sat Dec 18 02:10:25 AEST 1999


On Mon, 13 Dec 1999, Steven M. Schultz wrote:

> > From: Arno Griffioen <arno at usn.nl>
> > 
> > OK.. Biggie here is that this machine doesn't have a tape drive, just
> > 2 RA92 drives. It used to have a TU81, but it seems to have been junked
> 
> 
> 	Congratulations on getting a /94 with RA92 drives!   Condolences
> 	on the tape drive being junked.

Agree. I'd like to get my hands on a /94 myself... :-)

> > No ethernet card either.. (anybody know where to get a DEUNA cheap??)
> 
> 	In the US there are many places which sell used DEC equipment but
> 	I do not know of any in the Netherlands.  If at all possible get
> 	a DELUA insetad  - less power hungry and fewer bugs.

Less powerhungry, yes. It also takes less space on the Unibus, and is
faster. But I wasn't aware that the DEUNA had any more bugs than the
DELUA. Please enlight me. (I only use DELUAs myself, but I have one or two
DEUNAs lying around).

	Johnny

Johnny Billquist                  || "I'm on a bus
                                  ||  on a psychedelic trip
email: bqt at update.uu.se           ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol


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From: Johnny Billquist <bqt at Update.UU.SE>
To: "Steven M. Schultz" <sms at moe.2bsd.com>
cc: pups at minnie.cs.adfa.edu.au
Subject: Re: Installing UNIX on an 11/94
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On Tue, 14 Dec 1999, Steven M. Schultz wrote:

> Hi -
> 
> > From arno at usn.nl Mon Dec 13 23:28:32 1999
> > this thing. At least the RA92's are quite a bit more 'civilized' than the
> > RA82 on my uVAX which is more like a howling banshee..
> 
> 	Use less power and are more reliable (also larger capacity I believe)

RA82: 622 MB
RA92: 1.2GB

All with reservations about my memory going bad... :-)

> > Guess my first search will be for either an UNIBUS SCSI controller or 
> > a TK50/TK70 controller as I still have some drives for those..
> 
> 	A TK70 controller will run a TK50 drive very nicely _and_ offer
> 	the benefit of the buffer cache (which speeds things up greatly).  I
> 	do not know if there was a Unibus TK50 adaptor though.

TUK50 was (is) the name of that controller. I've actually played with a
VAX-11/750 with a TK50 once upon a time many moons ago.

	Johnny

Johnny Billquist                  || "I'm on a bus
                                  ||  on a psychedelic trip
email: bqt at update.uu.se           ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol


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From: "Steven M. Schultz" <sms at moe.2bsd.com>
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Subject: Re: Installing UNIX on an 11/94
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Hi -

> From: Johnny Billquist <bqt at Update.UU.SE>
> RA82: 622 MB
> RA92: 1.2GB

	That sounds a little small.  AH, let me go check /etc/disktab on 
	the PDP-11

	The RA90 was ~1.2GB:

		:pc#2376153:oc#0:bc#1024:fc#1024:

	and the RA92 was closer to 1.4GB:

		:pc#2940951:oc#0:bc#1024:fc#1024:

> > 	A TK70 controller will run a TK50 drive very nicely _and_ offer
> 
> TUK50 was (is) the name of that controller. I've actually played with a
> VAX-11/750 with a TK50 once upon a time many moons ago.

	Was there a TUK70 - or was the TK70 for the Qbus systems only?

	Steven Schultz
	sms at moe.2bsd.com

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From: "Steven M. Schultz" <sms at moe.2bsd.com>
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Subject: Re: Installing UNIX on an 11/94
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Hi -

> From: Johnny Billquist <bqt at Update.UU.SE>
> Agree. I'd like to get my hands on a /94 myself... :-)

	An 11/93 would be nice too, Qbus systems use less power and make less
	noise from what I have seen.

> Less powerhungry, yes. It also takes less space on the Unibus, and is
> faster. But I wasn't aware that the DEUNA had any more bugs than the
> DELUA. Please enlight me. (I only use DELUAs myself, but I have one or two
> DEUNAs lying around).

	I know the DEQNA had firmware problems that could cause the board to
	lock up under load - perhaps I was confusing the DEQNA and DEUNA.
	The later Qbus board (DELQA) was much nicer in the same way that the
	DELUA is better than the DEUNA.

	Steven Schultz
	sms at moe.2bsd.com

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From: Johnny Billquist <bqt at Update.UU.SE>
To: "Steven M. Schultz" <sms at moe.2bsd.com>
cc: pups at minnie.cs.adfa.edu.au
Subject: Re: Installing UNIX on an 11/94
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On Fri, 17 Dec 1999, Steven M. Schultz wrote:

> Hi -
> 
> > From: Johnny Billquist <bqt at Update.UU.SE>
> > Agree. I'd like to get my hands on a /94 myself... :-)
> 
> 	An 11/93 would be nice too, Qbus systems use less power and make less
> 	noise from what I have seen.

Well, I'm in love with Unibus systems... I have an 11/84 at home, and of
course, there is always Magica, which is an 11/70... :-)
(And then we have Knase, which is our 11/70 with 2.11BSD. Unfortunately,
both systems are powered off right now because of cooling problems. :-(

> > Less powerhungry, yes. It also takes less space on the Unibus, and is
> > faster. But I wasn't aware that the DEUNA had any more bugs than the
> > DELUA. Please enlight me. (I only use DELUAs myself, but I have one or two
> > DEUNAs lying around).
> 
> 	I know the DEQNA had firmware problems that could cause the board to
> 	lock up under load - perhaps I was confusing the DEQNA and DEUNA.
> 	The later Qbus board (DELQA) was much nicer in the same way that the
> 	DELUA is better than the DEUNA.

I don't think the DEUNA has that bug which riddles the DEQNA.
Also, the DEUNA/DELUA loads some microcode when I start using them, this
is running RSX. That microcode is located on the RSX system. Beats me what
it is for, or anything.
Worse (parhaps) is that the device driver for the DEUNA/DELUA don't work
with any Q-bus models, which means I don't have a driver for Q-bus
machines...

Anybody know anything more about this? I really don't care to dig around
the sources here, and also, I don't have the sources to all components.

	Johnny

Johnny Billquist                  || "I'm on a bus
                                  ||  on a psychedelic trip
email: bqt at update.uu.se           ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol


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From: Johnny Billquist <bqt at Update.UU.SE>
To: "Steven M. Schultz" <sms at moe.2bsd.com>
cc: pups at minnie.cs.adfa.edu.au
Subject: Re: Installing UNIX on an 11/94
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On Fri, 17 Dec 1999, Steven M. Schultz wrote:

> Hi -
> 
> > From: Johnny Billquist <bqt at Update.UU.SE>
> > RA82: 622 MB
> > RA92: 1.2GB
> 
> 	That sounds a little small.  AH, let me go check /etc/disktab on 
> 	the PDP-11
> 
> 	The RA90 was ~1.2GB:
> 
> 		:pc#2376153:oc#0:bc#1024:fc#1024:
> 
> 	and the RA92 was closer to 1.4GB:
> 
> 		:pc#2940951:oc#0:bc#1024:fc#1024:

You got me. :-)

> > > 	A TK70 controller will run a TK50 drive very nicely _and_ offer
> > 
> > TUK50 was (is) the name of that controller. I've actually played with a
> > VAX-11/750 with a TK50 once upon a time many moons ago.
> 
> 	Was there a TUK70 - or was the TK70 for the Qbus systems only?

Yes, Q-bus only. When the TK70 came out, I guess DEC had decided to stop
development of Unibus peripherials.
I very much doubt they sold that many TUK50, or RUX50 controllers.

	Johnny

Johnny Billquist                  || "I'm on a bus
                                  ||  on a psychedelic trip
email: bqt at update.uu.se           ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol




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