>Using RT-11 V5.01, on an 11/03 with a Dual RX02 drive,
>I would like to compare the files on two disks. Since it appears that
>the disk I booted from must remain in the drive, how do I compare two
>other disks?
You can't... the device/file comparison programs don't have the
code which allows them to mount another volume for the operation
and then mount the system volume (the /wait option in other
utilities).
Best you can do is copy the files to a common volume and compare
them there...
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 |
+--------------------------------+-------------------------------------+
Using RT-11 V5.01, on an 11/03 with a Dual RX02 drive,
I would like to compare the files on two disks. Since it appears that the
disk I booted from must remain in the drive, how do I compare two other
disks?
Steve
Ok, I spoke to the employee handling the purge of obsolete equipment at
the company in Richardson, Texas. Here's the deal: they would prefer if
someone could just come and haul all the crap away and be done with it.
They don't want anything for it, just for it to be hauled away.
More has been added to the pile since the list I posted, but I don't know
what.
I'm going to probably be in the Dallas area at the end of this month or
beginning of September for probably the last time in the forseeable
future. I may make one visit or two or maybe even several, I don't know.
But, the point is that I can make arrangements with anyone in that area
who wants to meet me at the company and haul the crap away. Then you can
do what you please with the stuff. Sell it at a profit to others, be nice
and give it away for 1.2*shipping, etc.
So I put out the call to anyone in the Dallas region who is interested in
taking this on to e-mail me and figure out what to do with this stuff.
To those who have expressed an interest so far in some of the stuff, I'll
e-mail you separately about what happens next.
Sellam Alternate e-mail: dastar(a)siconic.com
------------------------------------------------------------------------------
Don't rub the lamp if you don't want the genie to come out.
Coming this October 2-3: Vintage Computer Festival 3.0!
See http://www.vintage.org/vcf for details!
[Last web site update: 05/25/99]
>1) Everyone said because the lower platter is fixed, there's no concern for
>alignment, precision, feeler guages, etc. Just unbolt the heads, clean 'em,
>and bolt 'em back on. No special checks and so forth. Before I unbolt them
I
>wanted to double check and make sure I wasn't about to do anything silly.
>So - just unbolt, remove, clean, rebolt, and power up?
Don't forget to vacumn the dust!!! And change the air filter.
>
>2) I was thinking (bad sign <grin>)...if the heads contacted the platter
>enough to scrape off a nice circle of oxide, won't cleaning the heads and
>replacing the platter accomplish nothing? What I mean is - isn't it very
>likely that whatever caused them to scrape in the first place won't be
fixed
>by a new lower platter and cleaned heads? What am I missing here?
The first time you spin it up I would unplug the head positioner and let it
spin for 10 minutes without the heads loading to be sure to get the last of
the dust out. I don't know if the HP will stay spinning if it does not find
a servo track however. If it doesn't then spin it up and down several times
before allowing the heads to load.
What you have done along with above comments are all I ever used to do.
Dan
--- allisonp(a)world.std.com wrote:
> > >Dhrystone clocks it at 1974 MIPS (aka 1.974 GIPS!) Truely it boggles the
> > >mind. I had to explain to our sysadmin how the uVAX 3900 sitting in my
> > >office was about the speed of a 386/25 and he nearly choked.
>
> > "There's more to computer performance than clock speed, folks."
>
> Bigtime!
>
> back when pc and Vaxen were being pitted, the 386/16 was on par with
> a Vax750 if it had the FPU chip. Otherwise the vax could out math it.
I always liked to see the looks on people's faces when I compared our
VAX-11/750 (0.6 VUPS) with the *integer* performance of a Sega Genesis
(8Mhz 68000). The reason we could support 20+ users on the VAX with 8Mb
of memory was a) the 32-bit channel to disk and b) DMA outbound serial I/O
(a wad of Emulex 16-port muxes). Of course, it was more fun to be the
only user, especially when playing "Empire".
-ethan
===
Infinet has been sold. The domain is going away. Please
send all replies to
erd(a)iname.com
_____________________________________________________________
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Bid and sell for free at http://auctions.yahoo.com
On Mon, 09 Aug 1999 17:10:35 Joe <rigdonj(a)intellistar.net> writes:
> At 11:26 AM 8/9/99 -0700, you wrote:
> >Another classic computer maker "bites" the dust.
> >
> >See: http://www.news.com/News/Item/0,4,40250,00.html
> >
> >Which is a news.com story about how EMC (makers of storage products
> mostly)
> >will buy Data General for 1.1 billion in stock. This was the last
> of the
> >great mini-computer companies that had been left standing after DEC
> was
> >bought by Compaq.
>
> I guess that makes the DG Nova down here that needs rescuing an
> instant
> classic. Someone should grab it and put in on E-OverPay with a big
> pitch
> about how rare it is!
>
> Joe
This would be one of those rare instances where hype would be
mostly true . . .
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In a message dated 8/9/99 8:00:47 AM Eastern Daylight Time, gene(a)ehrich.com
writes:
> I need a battery for my IBM Thinkpad 500.
>
> Does anybody have one available or know where one can be obtained?
>
www.direct.ibm.com
choose parts and perhiphs link. you can locate the fru and price for the
battery. i've heard of a store called batteries plus that supposedly has lots
of laptop batteries that might have it. worth checking out.
--
d.b. young team os/2
--> this message printed on recycled disk space
visit the computers of yesteryear at-
http://members.aol.com/suprdave/classiccmp/museum.htm
Hum.... well... knowing what I know about HP corporate (their recent breakup
of the business partnership between them and EMC was *VERY* confrontational)
it makes me wonder if EMC purchasing data general isn't a "spite" move. When
HP killed the HP/EMC partnership EMC lost 20% of their revenues...
Jay West
-----Original Message-----
From: allisonp(a)world.std.com <allisonp(a)world.std.com>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Monday, August 09, 1999 3:21 PM
Subject: Re: EMC buys Data General
>> >Dhrystone clocks it at 1974 MIPS (aka 1.974 GIPS!) Truely it boggles the
>> >mind. I had to explain to our sysadmin how the uVAX 3900 sitting in my
>> >office was about the speed of a 386/25 and he nearly choked.
>
>First I think that is quite in error. First the clock on the 3900 is well
>above 25mhz and the CISC impmentation of the VAX used there is easily
>more of the 486dx/early Pentium class.
>
>> Yeah but did you explain that you can pile 30 users on that 3900 and
it'll
>> still perform about the same? That's not even possible with current
Wintel
>> hardware.
>>
>> "There's more to computer performance than clock speed, folks."
>
>Bigtime!
>
>back when pc and Vaxen were being pitted, the 386/16 was on par with
>a Vax750 if it had the FPU chip. Otherwise the vax could out math it.
>
>A real compare would be a NT box running many xterms and thin clients
>against a VAX... it would show how weak the PCs are. Vaxen with the high
>throughput IO for storage and all has all the advantages.
>
>Allison
>
>
>
>
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