> Anybody who is interested in surplus auctions, federal regulations
> concerning surplus (computers) auctions or reselling and who live
> nearby the University of Michigan, might be interested in attending the
> University Surplus Property Association annual meeting this upcoming
> weekend. This is a policy/association meeting...not an auction,
> but it is important for our hobby!
>
> http://surplus.msu.edu/uspa_docs/agenda.htm
Grrr! :-)
MSU is Michigan State, the land of the righteous, in East Lansing.
That _other_ school mentioned above is down the road in Ann Arbor.
Those trying to attend might want to show up in the correct town,
though it sounds like they're doing a bus tour to AA.
De
One thing that I have been wondering for a while is what the current
definition of minicomputer is.
It used to be contrasted with microcomputers, the telling difference being a
multichip processor implementation versus a single-chip microprocessor [if so,
are the POWER1 and POWER2 processors
minicomputer processors?] but now, with microprocessors being used in
mainframes (and even on-topic mainframes) is this distinction meaningless [i.e.
should the designation "microcomputer" in its size/power context be replaced with
something else?] and, if so, does the [whatever micro becomes]/mini/mainframe
become a question of mass (>700 lbs mainframe, >100 lbs mini, <100 lbs [???]),
or history (the HP3000 started life as a mini, therefore the spectrum models
continue as minis . . .), or does the venerable minicomputer cease to exist?
any other ideas?
Scott Quinn
> Yep, it's recognised the need to periodically refresh data onto
> whatever the current favourite media type is.
It is also MUCH faster to do this than to collect the data in the
first place, and if you don't overwrite the thing you copied from
you have another backup (for a while..)
You do need to be mindful of purging copies of bad files of which there
are other known good copies, and you need to make sure that the verified
files have some error detection/correction mechanism to detect silient
copy corruption (failures in disc write caches, etc.)
THE DUAL SERIAL BOARDS THAT WERE IN MY H.P. VECTRA 286 DON'T SEEM TO
WORK ON THE 386 OR LATER FOR SOME REASON... IS THERE A REASON THAT
ANYONE REMEMBERS OR A WAY AROUND THIS??? BOB LAAG, RIVERSIDE, CA.
Hi
There is a good chance it is an interface part.
Remember the 8008 bus is not TTL.
Dwight
>From: "Brent Hilpert" <hilpert at cs.ubc.ca>
>
>I (too) can not find a reference for the uA3656 in the Fairchild Full Line
Condensed Catalog (1975).
>
>However, I believe Fairchild's naming convention is that "uA..." would indicate
analog or interface functionality.
>
>Speculation #1:
> If there are some connections from the uA3656 to the 1101s (or 1702s) (but
not pin-for-pin parallelling) it may be a TTL<->MOS
sense-amplifier/driver/level-converter. Early MOS memory chips used external
drivers/sense amplifiers, and specialised ICs were produced for those functions.
>
> For example, I found Motorola refs for DS3645/75 (hex 3S latch driver for MOS
mem), DS3647/77 (quad 3S MOS mem IO reg), MC3461 (dual NMOS Memory Sense Amp)
(from Motorola Linear 1976).
>
> Perhaps it is from the Motorola DS36.. line, but second-sourced from
Fairchild.
>
>Speculation #2:
> An A/D or D/A converter (perhaps connected to the nearby D connector?).
>
>
>BTW & FWIW:
> On your web page about the AMI S6800
(http://www.classiccmp.org/hp/ami/ami.htm), you wonder what the FCM7002 IC is.
>It is a clock/calendar chip, like those used in the 1970s for constructing
digital clocks: the FCM7001 (aka CT7001) was a clock/calendar chip with
multiplexed 6-digit 7-segment display outputs. If I have it correctly, on the
FCM7002 the 7-segment outputs are replaced with BCD outputs. (... built a clock
using the 7001, and saw the 7002 on a real-time-clock I/O board for the TI-990
in the late 1970s, must have been rather awkward for the board designers to
interface.)
>
>
>"Joe R." wrote:
>>
>> Does anyone have any information about this IC? I have two of them. I
>> found them in the memory section of an Intel 8008 based computer. The other
>> RAMs are Intel 1101s so I'm guessing that these are equivelent parts but I
>> want to be sure. The date code on these is 7114 and they're white ceramic
>> with gold lids and faint grey traces to each leg. Here
>> <http://www.classiccmp.org/hp/i8008-1/close-up.jpg> is a picture of the
>> board with the two ICs installed. The ICs in the top row are 1702 EPROMs.
>> The 1101 RAMs are in the second row. These two parts are the 2nd and 3rd
>> parts from the RH end. FWIW I have a 1970 and a 1973 Fairchild catalogs but
>> neigher one lists any uA36xx parts.
>>
>> Joe
>
For any newbies to the group:
1. Don Maslin (San Diego, CA) collected what I
believe is the largest and most complete archive
of CP/M/S100 operating systems amongst us 'hobbyists'.
2. Don died 28 August 2004, leaving no plans
for his archive.
3. Because his widow Winnie was distressed with
the enquiries from those in our community regarding
Don's archive (of which she knew nothing), after
discussing this with her, with her heartfelt
appreciation and agreement, it having been read
to her before posting and sent to her in letter
form, as Don's friend and collaborator of some
15 years, I published the following statement
on ClassicCmp and comp.os.cpm on 22 September 2004:
*
"I have of course talked with his wife Winnie, and
she has asked that people interested in Don's software
archives and his hardware collection hold off on
contact until further notice through this list.
"Within a reasonable time I will locate his archives,
and I will personally guarantee that the archives will
be duplicated and copies deposited with people and
institutions which will honor the attitude that Don
put into this effort - one of love for old stuff and
and of service to the community.
"In time his hardware collection will also be made
available to the community.
"I ask you to consider Mrs. Maslin's position and not
attempt to intervene at this time."
(You can see the full text in the ng or ClassicCmp
archive.)
*
Many of you have enquired of me in private e-mail as
to the status, many have made generous offers of time,
energy, web hosting space, etc., and Winnie has been
left free of bother.
I NO LONGER BELIEVE THAT I CAN KEEP MY PERSONAL
GUARANTEE THAT THE ARCHIVES WILL BE SAVED. I MADE THAT
PROMISE IN GOOD FAITH, ON THE WORD OF WINNIE MASLIN.
My intent was to locate the base archive, gather the
materials not yet incorporated, make certain the
structure was fully documented and sensibly usable,
and
write it off to CD-ROM - to be distributed to computer
museums, universities, and to be hosted on web sites
so
that all could download the full archive, guaranteeing
that it would never be lost.
I seemed to be the logical one to do this - close by,
long association with Don, his project having come out
of the Dina-SIG which I founded, and a feeling for his
work habits.
I have talked with Winnie at least four times since
Don died, and with a member of the family who has
understanding of modern Windoze computers. I wrote an
'Appreciation' of Don for Sellam's last Vintage
Computer Fair (did you use it, Sellam? you never told
me), with a photo of Don and Winnie supplied by that
member of the family.
I HAVE GOTTEN NOWHERE.
The weekend following Thanksgiving was suggested by a
family member as good time to enter the garage and
find the archive and take first stock of Don's
'stuff'.
Winnie said no, she was too busy.
Sometime around Christmas was again suggested as a
good time, as a family member would be available to
move things so that my wheelchair could get to Don's
machine. Again, Winnie said no, she was too busy.
She told me that she would contact me after the
holidays, and that she still intended to have me do
the
job. When I had not heard from her at the end of
February, I called again.
She said she was angry with Don for never having told
her of the major intellectual work of the last 15
years
of his life, for having left no instructions. Of
course, she had no interest in his computer life and
he
would not have tried to explain this to her. She knew
that he sent and received disks - but never had the
interest to ask about them.
>From Winnie's view, Don left her with a burden that
she
does not want to deal with.
In my last talk with her, I repeated my offer to
inventory the contents of the garage, remove the
contents to a storage facility of my own, do the
archival work, get rid of the junk machines, and sell
the valuable machines FOR HER ACCOUNT, ON MY OWN
NICKEL.
The sentences I recall most vividly from that
conversation are "you will just have to wait until I
decide. After all, what else can you do?" And, "I'll
have Debbie [a family member who uses computers in her
work life] call you sometime - but she's very busy."
Her manner with me was unsupportable; I made an
sgreement which kept her free from annoyance, and she
will not honor her part. It's been 8 months now, time
to keep her part of the agreement. No, she hasn't the
slightest idea what an operating system or what the
archive is and, despite extended explanations, will
not
learn or care. I believe she cannot understand that
any
adult could be interested in old computers.
I believe the day will come when she will simply call
a
trash man and have her garage cleared. I do NOT
believe
that she will honor her committment to me.
*
So - where do we go from here? I have done all I can.
I
have agonized over this statement, wanting to release
a
progress report, unable to do so when there was no
progress to report. But now, I have to do this.
As I see it, there are four likely possibilities.
1. The community decide to inundate her with letters
requesting her to allow me to do as I have said I
would
do.
2. A reputable member of the community (I would
suggest
Jay West) approach her and try to get her to see
reason
and work out some arrangement.
3. Allow Don's archive to go to the trash bin when she
finally decides to have her garage cleaned out.
4. Allow the sharks to go after her, trying to get
their hands on the stuff in Don's garage.
*
I AM NOT SUGGESTING ACTION AT THIS POINT. I AM
SUGGESTING A DISCUSSION WITHIN THIS GROUP (WHERE DON
SPENT MOST OF HIS ONLINE TIME), FOLLOWED BY A GROUP
DECISION TO BE IMPLEMENTED. (For that purpose, I will
be turning on individual messages instead of the
digest
form in which I read this group.)
I WOULD STILL SAY THAT, UNTIL CLASSICCMP HAS ACHIEVED
A
CONSENSUS OF THE BEST COURSE OF ACTION,
DO ***NOT*** CONTACT WINNIE MASLIN.
I will send a copy of this message to Winnie by post.
Vern Wright
vern4wright at yahoo.com
__________________________________
Do you Yahoo!?
Make Yahoo! your home page
http://www.yahoo.com/r/hs
>
>Subject: what's an 11/75?
> From: "Jay West" <jwest at classiccmp.org>
> Date: Wed, 18 May 2005 15:01:13 -0500
> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
>
>I've been offered two 11/75's. I can't seem to find information on them. Are
>these Qbus machines, micro11 stuff? Or are they the bigger unibus stuff.
>Typically deskside towers or rackmount boxes?
>
>They are model # 173QA-B2
>
>I've googled and can't find a picture either :\
>
>Depending on what else is in the load, I may take it. If nothing piques my
>interest I'll pass it on to the list.
First appearance of the J11 CPU on the Qbus.
It's a decently fast Qbus 11. I have one.
Allison
Headin' to Dayton tomorrow morn, and I have to fill up the truck tonite. I
have *just enough* range to get to the Ohio border on a tank of gas, and
I'm wondering if I should fuel up in Michigan or Ohio...
[[ The fact that I'm durned near 400 miles from the border... not too bad
for a fullsize truck... ]]
What's the ballpark price o'gas per gallon south of the Michigan border?
I formally apologize to Jay for this offtopic drivel, but hey -- not nearly
so offtopic as some stuff... ;-) Speaking thereof, you gonna make it, Jay?
I still need to buy you a couple'o'beers... ;^>
Oh, and sounds like a go for supper with the classiccmp gang on Friday nite
-- I'll have a tagalong, shouldn't be a problem, eh?
Replies offlist, please!
Thanks,
Roger "Merch" Merchberger
--
Roger "Merch" Merchberger | Anarchy doesn't scale well. -- Me
zmerch at 30below.com. |
SysAdmin, Iceberg Computers
>From: ard at p850ug1.demon.co.uk
---snip---
>
>>
>> I have a small collection of old cameras, all of which can (or at least
>> could, if I made film to fit them) be used.
>
Hi Tony
I often use a TV screen as a quick check of the shutter speed.
Even though the screen has persitence, where the electron
beam hits is brighter. If you know the sweep speed, you can
get good enough on the shutter speed.
Dwight
