--- wpe101(a)banet.net wrote:
> As memory (dimly) serves me, under VMS, any userid with "SETPRV"
> capabilities
Oh, yeah. That's the ticket!
> would do it. There were some other priviledges, that, if carelessly granted,
> could enable a user to gain control of a system. IIRC, SYSNAM was one of
> them.
My "favorites" are BYPASS and CMKRNL. BYPASS does just that: bypasses all
UIC-based checking - reads, writes, deletes, etc. It's handy when you need
to delete a directory tree, but it's a dangerous one to leave on by default.
My typical scheme is to leave BYPASS _disabled_ for the SYSTEM account asa
default priv. CMKRNL allows your process to execute a "change mode to kernel"
call, which allows you to read and write physical memory. With this priv,
a malicious programmer can write code to peek at the process headers of other
processes on the system (like a "who" command would) or even tweak their own
header bits, possibly granting themselves permissions or changing their
effective user name. I used to have programs in C and FORTRAN to do all these
things, but they only work on pre-VMS-5 releases (and I didn't write them; I
inherited them when I took over a VAX-11/750 w/Fuji Eagle, running VMS 4.2
about 13 years ago).
-ethan
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--- Hans Franke <Hans.Franke(a)mch20.sbs.de> wrote:
> > I'll fess up, if it ain't C= it ain't a real computer :-)
>
> They did computers ?
They had to put _something_ on that office furniture. ;-)
-ethan
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Okay, I have the same drive(s-this weekend). The switch allows you to select
one of three computers the drive will be used on:
Straight 8
PDP-8/S
PDP-8I
the switch controls bus lines, (and selectors diode or resistor) logic for:
pcl - straight 8
init - for 8i
certain bus signals for 8/8s/8i, and other things I am finding in the
schematic (mentioned changes between 8,8I,8/s). I haven't read the whole
book yet as I have been inundated with documentation again... and my pick up
this weekend will make my current document set look like a pamphlet. Do you
have schematics? Contact me off the list.
P.S. They did not put this switch on early model DF32s as only the 8,8/S was
around. I am getting a newer drive that has the 8I switch (more changes).
Does anyone know if digital fixed the head crashing problem with the DF32-D,
or -F?
Thanks
john
-----Original Message-----
From: Ethan Dicks <ethan_dicks(a)yahoo.com>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Friday, November 05, 1999 9:45 AM
Subject: Re: Finally got a "straight" DF32 yesterday
>--- John B <dylanb(a)sympatico.ca> wrote:
>> >> >What's the -8/I switch?
>
>> I believe I am VERY lucky to have a wife and children that don't mind
>> co-existing with such hardware (it is in its own room)!
>
>I ended up buying a farm with a 30'x50' quonset hut, but for more reasons
than
>just the collection. If all goes well, I'll be breaking ground for a
purpose-
>built edifice for the collection in the spring.
>
>> I can answer your question when you tell me:
>>
>> What kind of modules are in your DF32 - purple M series with "G", or read
>> "R" series with "G".
>
>No M. R. On all drives, masters and slaves.
>
>-ethan
>
>=====
>Infinet has been sold. The domain is going away in February.
>Please send all replies to
>
> erd(a)iname.com
>__________________________________________________
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>Bid and sell for free at http://auctions.yahoo.com
>
--- John B <dylanb(a)sympatico.ca> wrote:
> >> >What's the -8/I switch?
> I believe I am VERY lucky to have a wife and children that don't mind
> co-existing with such hardware (it is in its own room)!
I ended up buying a farm with a 30'x50' quonset hut, but for more reasons than
just the collection. If all goes well, I'll be breaking ground for a purpose-
built edifice for the collection in the spring.
> I can answer your question when you tell me:
>
> What kind of modules are in your DF32 - purple M series with "G", or read
> "R" series with "G".
No M. R. On all drives, masters and slaves.
-ethan
=====
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-----Original Message-----
From: Ethan Dicks <ethan_dicks(a)yahoo.com>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Friday, November 05, 1999 8:17 AM
Subject: expanding PDP-8 memory (was Re: Finally got a "straight" DF32
yesterday)
>--- John B <dylanb(a)sympatico.ca> wrote:
>> >--- Mike Ford <mikeford(a)socal.rr.com> wrote:
>> >> >More Paper tape software...
>>
>> If the paper tapes have anything PDP 8 on them I can send you a copy. I
have
>> the PDP-8/S already hooked up to my PC (positive level converters ;-) )
>
>Great.
>
>> One other thing.... you mentioned you wanted to add more memory to one of
>> your straight 8s.
>
>Not quite. I have no interest in adding more memory to the Straight 8s. I
>was contemplating either replacing a core stack in an -8/L with battery-
>backed CMOS static RAM to free up a core stack for my -8/i, or adding 28K
of
>CMOS static RAM to the -8/i. This is all to be able to run OS/8. I know
>the Disk Monitor will run in 4K.
Okay...
>
>> I have two studies done by the McMaster University on
>> building core memory expanders for the 8,8/s using straight 8 memory
(8/s,8
>> used the same kinds) and some flip chips.
>
>Interesting.
>
Very.. very nice.. makes it easy to ad memory. I also got a copy of the 8K
RIM loader and 8K binary loader.
>> You might want to kill one of your straight 8s for the memory...
>
>> A straight-8 still isn't worth as much whole as it is in parts.. Ugh..
>
>I'm not completely convinced about that. I might be, but as the "first 8",
>there's a certain aura that goes with it.
>
I do appreciate what you are saying about "aura". Some people like to own
the first. I have a population problem and have owned too many "firsts"
including univac stuff.
But, one the Straight 8 stuff - one sold on ebay this spring, complete
untested for $1400 (but in great cosmetic condition) on eBay... they are
getting more for Altairs :-(. I am picking up at least one over the next
three weeks in MINT condition and I have a friend that wants one bad (I
won't part with my 8/s) so I will sell it to him around $1000. The first PDP
8 was made for many years as DEC had problems with memory on the 8I. I have
scrapped quite a few 8s (I am sure rack straight 8s as I have found front
panel PCBs in my storage for them) over the years as I at the time I did not
like 12 bit computers at all.
(here is where I know large rocks will be thrown at me - I'm ready.. ;-))
A straight 8 in pieces is worth a lot more. You can sell the front panel on
eBay for at least $250. Then, toss the core memory out of it for souvenirs
and get an easy $500 - even maybe sell it to someone who needs it. You then
could get a few hundred for the chassis (if its table top) from someone on
eBay who wants to convert a rack mount unit. Sell the flip chips away or
keep them as spares and you are way head of the standard $1400 for an 8.
Original documents command good $$ too on eBay. A lot of folks have straight
8s which seems to be keeping the prices down.. it would not surprise me if
there was a few hundred in the States alone as there are 8 "mint" running
units in Australia! Abundance of a model dictates it's value.. ie: A LINC-8
and a PDP-8/S exists in very low numbers and fetch a lot more $$$. I've been
talking to some folks on here about the $$ of old machines to get an idea of
what "deep pockets" and collectors value the machines at.. and have found
that I still can't get much for a Straight-8...
But HEADS-UP - Some of these old ultra-rare minis are commanding some
serious $$$. I was offered $12,000 and $15000 (this one wants to make
another offer) for my 8/S (running) with docs and software in mint
condition. I refused both offers (these were two eBay deep pockets that
found me by looking at my "About Me" page.). I don't know what a LINC-8 in
mint condition running is worth but probably more....
Another HEADS-UP - Honeywell 316s - Not whole but in parts. One of my 316s
was carted to the dump this spring but spares for the machine are fetching
big $$$ from those who want to hang up on their wall a piece of "ARPANET".
The core memory gets at least $1000 CAD for the set and CPU boards/micropacs
are fetching at least $60 US EACH!. Front Panel - no idea but probably a
couple hundred. You can't get $4000US for a 316 whole but you can if you
kill it.
In my defense for such actions I do have/had "population" problems with some
mini models.. The IBM 1130 took up the entire first floor of my parents home
(it had every accessory), it was scrapped. I had 16 large racks of
316/ARPANET type stuf,Singers, Olivettes, etc... There is only so much one
person can handle and "funding" is required for new loads of minis.
>> You might want to think about doing that as it is nice to keep the same
>> boards/technology in a transistor computer like that.
>
>I have every interest in keeping the technology "pure". It's the M-series
>-8s that I'm considering polluting with modern parts.
That's good. I like to keep transistor computers all transistors and tube
computers all tubes...
>
>-ethan
>
>
>=====
>Infinet has been sold. The domain is going away in February.
>Please send all replies to
>
> erd(a)iname.com
>__________________________________________________
>Do You Yahoo!?
>Bid and sell for free at http://auctions.yahoo.com
>
I don't know. Where is/was it?
>Do they still have that first Saturday sale each month ? I never got to
>there to see it but was told you pay almost any can of computer item made
>during the one day sale.
--- John B <dylanb(a)sympatico.ca> wrote:
> >What's the -8/I switch?
> Depending on the DF32, I have found two transistor versions. One with a
> rotary switch on the right side of the front and one without. The switch
> allowed you to select "PDP 8, 8/S, 8/I".
I don't think I have that switch on my drives. You have schematics? Do you
know what that switch affects?
-ethan
=====
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--- John B <dylanb(a)sympatico.ca> wrote:
> >--- Mike Ford <mikeford(a)socal.rr.com> wrote:
> >> >More Paper tape software...
>
> If the paper tapes have anything PDP 8 on them I can send you a copy. I have
> the PDP-8/S already hooked up to my PC (positive level converters ;-) )
Great.
> One other thing.... you mentioned you wanted to add more memory to one of
> your straight 8s.
Not quite. I have no interest in adding more memory to the Straight 8s. I
was contemplating either replacing a core stack in an -8/L with battery-
backed CMOS static RAM to free up a core stack for my -8/i, or adding 28K of
CMOS static RAM to the -8/i. This is all to be able to run OS/8. I know
the Disk Monitor will run in 4K.
> I have two studies done by the McMaster University on
> building core memory expanders for the 8,8/s using straight 8 memory (8/s,8
> used the same kinds) and some flip chips.
Interesting.
> You might want to kill one of your straight 8s for the memory...
> A straight-8 still isn't worth as much whole as it is in parts.. Ugh..
I'm not completely convinced about that. I might be, but as the "first 8",
there's a certain aura that goes with it.
> You might want to think about doing that as it is nice to keep the same
> boards/technology in a transistor computer like that.
I have every interest in keeping the technology "pure". It's the M-series
-8s that I'm considering polluting with modern parts.
-ethan
=====
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<gets. Sounds like you did everything that you could to protect it. Do yo
<have any other suggestions other than using someone other than UPS? Did
<you file a claim with UPS? What were the results?
Over the years I've shipped 3 VS3100s, two PC minitowers and an assortment
of stuff via UPS. They all arrived as shipped, one peice no scars.
Several errors are often made. BUBBLE DOES NOT WORK. Ok why? Most people
put one or two layers of the large bubbles around an item and wedge it into
a box. At arrives with the corners rounded. Look at any commercial product
of similar weight and you find expanded foam or a VERY thick layer of stuff
between the item and box. There's a reason for this. You drop a box 30"
to concrete and there has to be enough padding to protect it.
The other is use of extra cardboard at the corners to reinforce the padding
and the external box or better yet wrap it, box it and pad it and box it.
I've seen a lot of stuff shipped and if packaged correctly it will survice
that 30" drop and then some.
Oh, and Fedex will drop boxes too.
Allison