[pups] (no subject)

[pups] (no subject)

[Christos Papachristou]

I would like to do a bad sector scan on a RD52 connected to a RQDX1 (The machine is a pdp11/73 without OS) prior to installing BSD2.11.Is there a standalone program like zrqch0(only for RQDX3) that can be downloaded directly to the pdp via vtserver and recognizes the RQDX1 , i.e. a version of zrqb or something similar?
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[pups] (no subject)

[Christos Papachristou]

----- Original Message -----
From: "Johnny Billquist" <bqt@update.uu.se>
To: "Christos Papachristou" <chpap at ics.forth.gr>
Cc: <pups at minnie.tuhs.org>
Sent: Wednesday, February 26, 2003 3:04 PM
Subject: Re: [pups] (no subject)


> On Wed, 26 Feb 2003, Christos Papachristou wrote:
>
> > A few questions from a newbie:
> > I have installed 2.9BSD on a microPDP11/73 with an RD52, using the MSCP
> > version of Jonathan Engdahl. After startup the kernel
> > indicates 160kb of memory .I am not familiar with such an old unix to
> > find out the details but  I understand it as 256k minus the kernel. The
memory
> > is M8067-LF i.e. 512k Qbus. Does this mean that the system can't see the
> > rest of it and that I have configure/recompile the kernel?
> > The system seems anyway to run fine.
>
> Are you sure it's reporting bytes, and not words?

I don't know ,it just says mem=158720


>
> > I haven't seen an operational PDP with UNIX before this,
> > so I can't judge its speed. When in single user mode it seems to
> > me that it runs "fast". However upon entering multi user mode the speed
> > drops dramaticaly. I have not yet compiled in the 8 port multiplexer
> > (DHV11-A), so only the console is functional and thus no gettys are
> > loaded. So ,why is there such a change in speed? Does the multiuser mode
> > just rise the nice value of the console tasks?
>
> There shouldn't be a big difference in speed. Are you starting some heavy
> demons?
No. It wasn't a problem in speed, the default configuration for getty was
wrong (it was
configured for LA36 printer output). This is the first time I use a UNIX
that was meant for dialups with 110-9600 modems or terminals so please
excuse me. But I am learning... By the way
the console runs at 38.4kbps , but the gettys are internaly configured at
other speeds ,
the highest being 9.6kbps. Can't I use the full speed of the port?


> > Some information on the system. It is a KDJ11-B (M8190 -no suffix) i.e.
an
> > 11/84. So, the label on the system says microPDP11/73 (in an BA23
enclosure)
> > the cpu is an 11/84 (if the FPU socket is the DIP-40 slot then it is
> > unused), and the  2.11BSD second stage boot (version from vtserver) I
> > have tried indicates 11/83. The memory is after the CPU and is Qbus
(M867-LF).
> > If I have understood what I have read in the list, this must be a mixed
> > system that could use PMI memory, but just uses Qbus?? What exactly is
my
> > system?
>
> There exists a specific 11/73 CPU card, but we'll ignore that for now.
> The 11/73, 11/83 and 11/84 all use the same CPU card.
> The differences are in other areas, and cannot always easily be detected
> by software.
> The difference between an 11/73 and 11/83 is if the system have Qbus
> memory or PMI memory. The difference between an 11/83 and 11/84 is if the
> system have the KT84 (or whatever the card is called, my memory fails me
> at the moment) Unibus map, which is a Q-bus to Unibus converter along with
> the Unibus map required. The CPU is always on a Qbus, but in the 11/84,
> nothing but CPU and PMI memory is on this bus.
>
> > Moreover the MSCP controller (M8639 YP i.e. RQDX1)
> > the serial port multiplexer(M3104 i.e. DHV11-A) and the memory are Qbus
while
> > the cpu board is indicated as Unibus in the field guide. Can these two
bus type
> > s be mixed? (If yes , i would be tempted to abuse the dead VAX11/780 in
the
> > basement. Can this be done?).
>
> No.
> As stated above, the CPU card is actually always Qbus. In the 11/84 you
> have a bus adapter to connect the Unibus.
>
> > Anyway, I thought that the best choice of
> > a UNIX for it since it only has an RD52 woulbe 2.9 BSD with MSCP
support.
> > Was this a good guess?
>
> Yes, since you probably don't want to pay a lot of money to Mentec for one
> of their OSes. 2.11 is much nicer, but you'll want more memory and disk
> space for that.
>
> 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
>

[pups] (no subject)

[David Evans]

On Wed, Feb 26, 2003 at 02:25:38PM +0200, Christos Papachristou wrote:
> I have not yet compiled in the 8 port multiplexer
> (DHV11-A), so only the console is functional and thus no gettys are
> loaded.

  Are you *sure* that there are no gettys?  The default install might fire
them up anyway, and they will repeatedly die and be restarted.  It's been over
ten years since I looked at a 2.9BSD system, and that was on a Pro350, so I
can't really help much more than that.

-- 
David Evans          (NeXTMail/MIME OK)             dfevans at bbcr.uwaterloo.ca
Ph.D. Candidate, Computer/Synth Junkie     http://bbcr.uwaterloo.ca/~dfevans/
University of Waterloo         "Default is the value selected by the composer
Ontario, Canada           overridden by your command." - Roland TR-707 Manual

[pups] (no subject)

[Johnny Billquist]

On Wed, 26 Feb 2003, Christos Papachristou wrote:

> A few questions from a newbie:
> I have installed 2.9BSD on a microPDP11/73 with an RD52, using the MSCP
> version of Jonathan Engdahl. After startup the kernel
> indicates 160kb of memory .I am not familiar with such an old unix to
> find out the details but  I understand it as 256k minus the kernel. The memory
> is M8067-LF i.e. 512k Qbus. Does this mean that the system can't see the
> rest of it and that I have configure/recompile the kernel?
> The system seems anyway to run fine.

Are you sure it's reporting bytes, and not words?

> I haven't seen an operational PDP with UNIX before this,
> so I can't judge its speed. When in single user mode it seems to
> me that it runs "fast". However upon entering multi user mode the speed
> drops dramaticaly. I have not yet compiled in the 8 port multiplexer
> (DHV11-A), so only the console is functional and thus no gettys are
> loaded. So ,why is there such a change in speed? Does the multiuser mode
> just rise the nice value of the console tasks?

There shouldn't be a big difference in speed. Are you starting some heavy
demons?

> Some information on the system. It is a KDJ11-B (M8190 -no suffix) i.e. an
> 11/84. So, the label on the system says microPDP11/73 (in an BA23 enclosure)
> the cpu is an 11/84 (if the FPU socket is the DIP-40 slot then it is
> unused), and the  2.11BSD second stage boot (version from vtserver) I
> have tried indicates 11/83. The memory is after the CPU and is Qbus (M867-LF).
> If I have understood what I have read in the list, this must be a mixed
> system that could use PMI memory, but just uses Qbus?? What exactly is my
> system?

There exists a specific 11/73 CPU card, but we'll ignore that for now.
The 11/73, 11/83 and 11/84 all use the same CPU card.
The differences are in other areas, and cannot always easily be detected
by software.
The difference between an 11/73 and 11/83 is if the system have Qbus
memory or PMI memory. The difference between an 11/83 and 11/84 is if the
system have the KT84 (or whatever the card is called, my memory fails me
at the moment) Unibus map, which is a Q-bus to Unibus converter along with
the Unibus map required. The CPU is always on a Qbus, but in the 11/84,
nothing but CPU and PMI memory is on this bus.

> Moreover the MSCP controller (M8639 YP i.e. RQDX1)
> the serial port multiplexer(M3104 i.e. DHV11-A) and the memory are Qbus while
> the cpu board is indicated as Unibus in the field guide. Can these two bus type
> s be mixed? (If yes , i would be tempted to abuse the dead VAX11/780 in the
> basement. Can this be done?).

No.
As stated above, the CPU card is actually always Qbus. In the 11/84 you
have a bus adapter to connect the Unibus.

> Anyway, I thought that the best choice of
> a UNIX for it since it only has an RD52 woulbe 2.9 BSD with MSCP support.
> Was this a good guess?

Yes, since you probably don't want to pay a lot of money to Mentec for one
of their OSes. 2.11 is much nicer, but you'll want more memory and disk
space for that.

	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

[pups] (no subject)

[Christos Papachristou]

A few questions from a newbie:
I have installed 2.9BSD on a microPDP11/73 with an RD52, using the MSCP
version of Jonathan Engdahl. After startup the kernel
indicates 160kb of memory .I am not familiar with such an old unix to
find out the details but  I understand it as 256k minus the kernel. The memory
is M8067-LF i.e. 512k Qbus. Does this mean that the system can't see the
rest of it and that I have configure/recompile the kernel?
The system seems anyway to run fine.
I haven't seen an operational PDP with UNIX before this,
so I can't judge its speed. When in single user mode it seems to
me that it runs "fast". However upon entering multi user mode the speed
drops dramaticaly. I have not yet compiled in the 8 port multiplexer
(DHV11-A), so only the console is functional and thus no gettys are
loaded. So ,why is there such a change in speed? Does the multiuser mode
just rise the nice value of the console tasks?

Some information on the system. It is a KDJ11-B (M8190 -no suffix) i.e. an
11/84. So, the label on the system says microPDP11/73 (in an BA23 enclosure)
the cpu is an 11/84 (if the FPU socket is the DIP-40 slot then it is
unused), and the  2.11BSD second stage boot (version from vtserver) I
have tried indicates 11/83. The memory is after the CPU and is Qbus (M867-LF).
If I have understood what I have read in the list, this must be a mixed
system that could use PMI memory, but just uses Qbus?? What exactly is my
system? . Moreover the MSCP controller (M8639 YP i.e. RQDX1)
the serial port multiplexer(M3104 i.e. DHV11-A) and the memory are Qbus while
the cpu board is indicated as Unibus in the field guide. Can these two bus type
s be mixed? (If yes , i would be tempted to abuse the dead VAX11/780 in the
basement. Can this be done?). Anyway, I thought that the best choice of
a UNIX for it since it only has an RD52 woulbe 2.9 BSD with MSCP support.
Was this a good guess?
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[pups] (no subject)

[Arda Ulas Unlu]

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