>Actually, I like them both for what they are. CP/M is nice because it is
>simple. No libraries, no shared files, all files that are needed for an
>application are usually in one directory and not strewn across the
>directory structure. (But, it doesn't TCP/IP. DAMN!)
>
>Linux on the other hand is GREAT for it's multi-user, multi-tasking and
>networking abilities! I love every one of my Linux boxes! But, it is a
>flavor of Unix and therefore has endless numbers of library files (that
>somehow are never the right version) and an application's needed support
>files are strewn across 50 different directories.
You make the "real world" sound like it's a competition between
Microsoft products and Unix-derived products. In reality, there
are many OS's out there which fall into neither category and are
more than capable (and in all cases more capable than Unix-like
or Microsoft OS's) to do the real-world jobs that they do. And many
of these OS's run quite nicely on classic hardware, to boot.
Anyone who thinks that the OS issue is entirely limited to Unix-alikes vs
Microsoft vs CP/M is putting on a very limiting set of blinders as to
what is out there doing the real work in banks, offices, factories,
labs, and hospitals.
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
Michael -
I was part of the HP-85 belt group buy (5 sets,) but I can't find your note
with the total owed and mailing address to send payment. Would you please
resend the info to me?
Thanks!
-- Tony Eros
2105 Anson Road
Wilmington, DE 19810
-----Original Message-----
From: Michael Grigoni [SMTP:msg@computerpro.com]
Sent: Monday, March 08, 1999 3:46 PM
To: Discussion re-collecting of classic computers
Subject: HP-85 belts/Capstan repair
Greetings to all:
Since I've been absent for about a week, 800 messages have piled-up
from the list; reviewing them will take awhile so I'm posting this
to report on the HP-85 belt/capstan issues status globally.
The belts have arrived and are being mailed-out early this week. I
installed a set in our HP-85 and they work well.
I tried a new approach to capstan repair which I find works very
well.
Clean the capstan of old rubber down to a minimal amount of residue
with isopropyl. Obtain a can of dipping vinyl (for coating tool
handles, etc.); most hardware stores should have it. Remove the
capstan/encoder wheel ass'y from the motor shaft. Prepare the
vinyl properly according to directions with the product. Dip the
capstan (inverted) at the rate of about 5 seconds for its length,
being careful to just dip just above the bottom rim of the capstan
wheel so that the vinyl creates an overlap of 90 degrees. Withdraw
the part at the same rate as insertion. Immediately invert the
part and place on a level surface in a warm place to dry for four
hours. During the drying time you will note that any vertical
asymmetry evens out. Repeat with another dip and 4 hour dry.
The results were very good and tests with an old tape containing
an 84 record program produced no errors (reading or writing).
Attached is a small jpg which gives an idea of the appearance of the
results (max mag. avail with the camera lens).
Michael Grigoni
Cybertheque Museum << File: CAPSTAN2.JPG >>
Note - the following item...
>> Magnetic tape diagnostic nine-track 7970/13181
This is the manual for the diagnostic, not the diagnostic itself!
Jay West
John Foust replied:
>>In a lot of cases Commodore shipped prototype machines to
>>various maufacturers. I believe they used Sun systems to
>>develop the original AmigaOS.
>
>They used Stratus 68000 boxes in the very early days. I remember
>that; I don't remember the use of Suns quite as well.
Yes that was it. I was confusing them with the Sun machines that the Los
Gatos team bought after they were bought by Commodore.
--
Gareth Knight
Amiga Interactive Guide | ICQ No. 24185856
http://welcome.to/aig | "Shine on your star"
Was cleaning out the manual shelf again...
The following manuals are available free to a good home (yes, the titles are
exact, if not long):
Magnetic tape diagnostic nine-track 7970/13181
Maintenance manual 30032B asynchronous terminal controller for HP3000
computer systems
Maintenance manual 30115A nine-track (NRZI-PE) magnetic tape subsystem for
HP3000 computer systems
Installation and service manual model 7905a cartridge disc subsystem for
HP3000 computer systems
Installation and service manual 40018A plenum assembly
Installation and service manual model 13037A disc controller
Operating and service manual 7970B/7970C digital magnetic tape units
Operating and service manual 7970B/7970C digital magnetic tape units
There is two of the last title.
These are all manuals I have no use for or have duplicates of. Please -
someone take them!
Jay West
>> HP machines at the last VCF?). But if TI puts bids out, then they care
even
>> less than I thought. Unless they have some perverse internal bid system?
>
>No, that's TI bidding the calculators to school districts. Obviously
>they have to build what their customers want.
I think 'bid specifications' have nothing to do with what customers want.
It is boilerplate to be included in specifications for competitive bidding
which will exclude other similar products. I've seen this done - you pick
some irrelevant, but unique, features of the product you want to buy.
Maybe you can avoid competitive bidding altogether by writing a sole-source
justification. TI is just streamlining the acquisition process.
Russ
(Yet Another Update)
Thanks Megan! It turned out that when I removed the Viking tape card to
inspect it I re-inserted it backward (no ears on that one). That meant the
RQ11 wouldn't fit in slot 6 and that meant an empty slot.
Q1) So how badly does it toast things in the Q-bus to be backwards in slots
A-B ?
Q2) Do all empty slots need to have bus grant boards?
--Chuck
>Is it impossible to use an RQDX2 on the Q-bus side of a DW11-B? I've run
>a Unibus machine (an 11/45) with an RLV11, IBV11, MINC modules, etc on
>the other side of a DW11-B with no problems.
>
>Never heard of it being done, but it might be fun to try....
I've never tried it myself, but if I had an 11/84, I would... I
might just try having the cpu, mem, mem and a DELQA in the qbus
part...
But then, it has been a while since I last saw the insides of an
11/84 (I built one from parts found in the halls of the DEC Mill
for use by the RT-11 development group way back when... We hadn't
yet been able to requisition one, but had to support it anyway :-)
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com |
| Unix Support Engineering Group | (home): mbg!world.std.com |
| Compaq Computer Corporation | addresses need '@' in place of '!' |
| 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ |
| Nashua, NH 03062 | "pdp-11 programmer - some assembler |
| (603) 884 1055 | required." - mbg |
+--------------------------------+-------------------------------------+
-----Original Message-----
From: Megan <mbg(a)world.std.com>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
>Sorry... once I get my mits around hardware, it is hard to pry it
>away from me... :-)
Your husband must be very happy. ;)
OK, you don't get to borrow it, but I'll look out for a second one with you
in mind.
- Mike: dogas(a)leading.net
I recently picked up an old Versatec 8536 electrostatic plotter at a Hughes
auction. When I inspected it, all the disks were there. A week later when I
picked it up, as you might guess, all the 3.5" disks were gone. I am now
looking for a set of disks to copy or purchase. Call Mike at 323 462-5772 or
email mikeparadiso(a)worldnet.att.net
