I've just finished processing a bunch of RX01 and RX02 RT11A disks.
The files on the RX01 floppies are of type .DPA and those on the RX02
ones, DPY. No files of any other type in the whole collection.
I have no other information, but I suspect that these are plotter files.
Both types seem to start with the same prefix bytes, for example:
06 00 f0 00 40 00 00 01 00 1e ff ff 00 00 00 00
Does anyone have a guide to how these files are structured?
Thanks,
Chuck
Is there any recommended method for cleaning up melted ?rubber? feet on a plastic case?
I?m trying to determine if I can revive the VAXstation 4000/90 I received from a list member, back around 1998 (it?s never worked). When I pulled it out, I discovered that its feet have melted, and I?m assuming probably made a mess on the disk enclosure for my VAXstation 3100 that it was on top of.
Zane
Hi All,
I lent my Sun 3/80 out to someone and it came back pretty damaged. Does
anyone by chance have an old 3/80 carcass laying around that has a good
rear plastic bezel P/N 600-2209-02? If not, does anyone have any plastic
repair suggestions? Also one of the rear feet (narrower rear one) opposite
the PSU was missing...
-Kurt
THanks Lee!! Much appreciated - confirmed my decaying memory, and
pointed out the the almost mythical DECNA!!
bb
On Wed, May 19, 2021 at 1:38 PM <cctalk-request at classiccmp.org> wrote:
>
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> Today's Topics:
>
> 1. DECNet for Pro 300 series boxes (Lee Gleason)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 18 May 2021 12:20:34 -0500
> From: Lee Gleason <lee.gleason at comcast.net>
> To: cctalk at classiccmp.org
> Subject: DECNet for Pro 300 series boxes
> Message-ID: <db66b12f-e0a4-94b4-d9e9-efa88a84851e at comcast.net>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
>
> ? DECnet for Pro350/380 was donated to DECUS, available as? DECUS
> package PRO175. A quick Goog found the floppy disk images for it at
> http://www.os2site.com/sw/DEC/pro/pro175/index.html. If that site
> doesn't work out, or you don't like them in LHARC format, let me know -
> I have them as normal dsk files. DECnet on the PRO's was end node only,
> you could run it DDCMP on an asynch line, or on the rare, elusive, DECNA
> ethernet card - but not both at once.
>
> --
> Lee K. Gleason N5ZMR
> Control-G Consultants
> lee.gleason at comcast.net
>
>
> End of cctalk Digest, Vol 80, Issue 17
> **************************************
? DECnet for Pro350/380 was donated to DECUS, available as? DECUS
package PRO175. A quick Goog found the floppy disk images for it at
http://www.os2site.com/sw/DEC/pro/pro175/index.html. If that site
doesn't work out, or you don't like them in LHARC format, let me know -
I have them as normal dsk files. DECnet on the PRO's was end node only,
you could run it DDCMP on an asynch line, or on the rare, elusive, DECNA
ethernet card - but not both at once.
--
Lee K. Gleason N5ZMR
Control-G Consultants
lee.gleason at comcast.net
(I had accidentally sent my reply below only to Antonio. I'm resending
it to the list.)
> On 10/05/2021 10:05, Malte Dehling wrote:
> > Thanks a lot, Antonio, these are very valuable to have!
> I've only checked a couple of them under SIMH, so it would be helpful to
> know if I need to check my workflow or not.
> > I think uploading them to archive.org would be a good long-term
> > solution. I can take care of it if you don't have an account.
>
> Please do. Thanks.
Will do. I'll let you know.
> In other news, I polished the MAR-1989 CONOLD, which looked very bad, to
> start with. Amazingly it buffed up quite nicely and then read surprisingly
> well:
>
> [
>
> $ ddrescue -r5 -v /dev/sr1 CDROM-AG-NC67A-RE-1989-03-VMS-CONOLD.iso
> CDROM-AG-NC67A-RE-1989-03-VMS-CONOLD.map
> GNU ddrescue 1.23
> About to copy 205199 kBytes from '/dev/sr1' to
> 'CDROM-AG-NC67A-RE-1989-03-VMS-CONOLD.iso'
> ??? Starting positions: infile = 0 B,? outfile = 0 B
> ??? Copy block size: 128 sectors?????? Initial skip size: 128 sectors
> Sector size: 512 Bytes
>
> Press Ctrl-C to interrupt
> ???? ipos:? 205198 kB, non-trimmed:??????? 0 B,? current rate:?????? 0 B/s
> ???? opos:? 205198 kB, non-scraped:??????? 0 B,? average rate: 637 kB/s
> non-tried:??????? 0 B,? bad-sector:???? 2048 B,??? error rate: 170 B/s
> ? rescued:? 205197 kB,?? bad areas:??????? 1,??????? run time:????? 5m 22s
> pct rescued:?? 99.99%, read errors:?????? 25,? remaining time:???????? n/a
> ????????????????????????????? time since last successful read:????? 2m? 1s
> Finished
> ]
>
>
> So I went ahead and tried the CONDIST from MAY-1989. That too now can be
> read, although it is proving a somewhat tougher nut to crack:
>
> [
>
> $ ddrescue -r5 -v /dev/sr1 CDROM-AG-MN36D-RE-1989-05-VMS-CONDIST.iso
> CDROM-AG-MN36D-RE-1989-05-VMS-CONDIST.map
> GNU ddrescue 1.23
> About to copy 623247 kBytes from '/dev/sr1' to
> 'CDROM-AG-MN36D-RE-1989-05-VMS-CONDIST.iso'
> ??? Starting positions: infile = 0 B,? outfile = 0 B
> ??? Copy block size: 128 sectors?????? Initial skip size: 128 sectors
> Sector size: 512 Bytes
>
> Press Ctrl-C to interrupt
> ???? ipos:??? 5919 kB, non-trimmed:??????? 0 B,? current rate:?????? 0 B/s
> ???? opos:??? 5919 kB, non-scraped:?? 11127 kB,? average rate: 14694 B/s
> non-tried:??????? 0 B,? bad-sector:??? 2843 kB,??? error rate:????? 85 B/s
> ? rescued:? 609276 kB,?? bad areas:????? 445,??????? run time: 11h 31m? 2s
> pct rescued:?? 97.75%, read errors:???? 5884,? remaining time:? 5d 23h 43m
> ????????????????????????????? time since last successful read:????? 2m 45s
> Scraping failed blocks... (forwards)??? ]
>
>
> On the plus side, that's 97.75% more data than I had before :-) but the
> "remaining time" looks like it could be the rest of the week (it varies
> quite a bit).
>
>
> I think, from reading the manual, that I can use CTRL-C and restart this
> again later and it will pick up where it left off using the map file. Is
> this right?
Very nice, this worked much better than I had expected! And you're
right, you can simply CTRL-C and restart ddrescue with the same command
(i.e., with the iso and map file; different options should work.) I would
make a copy of the files before restarting, just in case.
> Are there any other options I should consider trying?
Can you try with "-b 2048 -d" for direct disc access and maybe once more
with "-R" for reverse?
> Another thought is that perhaps a shade more polishing might help. If I
> polish the CDROM a little more and then resume the ddrescue, I think I won't
> be any worse off than I am now, i.e. all existing data will still be there
> and all I'll be risking is data that maybe would have eventually read before
> but now may not read at all. Is that right? Successful reads are now ~20m
> apart, so I suspect that the remaining data will be quite difficult to
> recover.
After trying the various options on the disk in its current state, I see
no harm in trying this approach. With the map file, ddrescue should
never overwrite already-read data. Again, I would make a copy to be
safe.
Cheers,
Malte
--
Malte Dehling
<mdehling at gmail.com>
Dear list,
through Antonio's efforts, we have now archived ISOs for a number of
early CONDIST CDs. Unfortunately, this did not help me find a version
of the VAXSET Software Engineering Tools for VMS 4.x that I was looking
for:
- CONDIST 1989-07 contains VAXSET v8.0, which requires VMS 5.0/5.1.
- CONDIST 1989-05 does not contain any VAXSET components.
So my hope now is that someone may still have old TK50 or 9-Track
distribution tapes stored away for VAXSET v7.0 or earlier, or for some
of its components:
- LSE Language Sensitive Editor v2.2 or earlier
- SCA Source Code Analyzer v1.2 or earlier
- PCA Performance Coverage Analyzer v2.0 or earlier
- DTM DEC/Test Manager v2.3 or earlier
(I already have CMS and MMS.)
Cheers,
Malte
--
Malte Dehling
<mdehling at gmail.com>
My recollection of Decnet for Pro boxes is that the available SW was
for an end node and not a routing or other capability for the
380/350/325 boxes.
While that memory might be incorrect, are there any DecNet packages
for the Pro family available anywhere?
a few hours of searching did not turn up any thing but PDFs about the software.
thanks in advance for any replies.
bob
Classic Computer Collectors,
My name is Eric and I live in Baton Rouge, LA. A customer of mine recently
asked me to find a good home for his early 1980's Intertec Superbrain. He
told me that it worked the last time he used it in 198? after which time it
sat in his attic with the dust cover on it. He provided me with a number of
5.25" floppy disks, which he said contained the complete operating system.
The chassis appears to be 100% intact, and includes the dust cover. I can
provide a few photos if you'd like.
I have not yet been able to make contact with any other classic PC
collectors, or museums that have expressed interest. Before I send it out
to my local recycler, I thought I'd reach out and see if anyone might be
interested.
Thank you for your time & God bless,
Eric Evans
225homebuyers.com
225.242.9858 gVoice
316.461.8587 cell
---------- Forwarded message ---------
From: Dave Dunfield <dds.dunfield at gmail.com>
Date: Tue, May 11, 2021 at 11:09 PM
Subject: Re: DDS Intertec SuperBrain attic find w/ OS and dust cover
To: Eric Evans <4eric.evans at gmail.com>
Hi Eric,
Sorry but no - I'm moving to smaller digs and have had to let much of my
collection go and simply can't take on more right now. You might try the
Classic computer collectors mailing list:
http://www.classiccmp.org
Dave
Btw: In asking stuff like this it might be a good idea to state your (or
friends) location.
On Mon, May 10, 2021 at 5:22 PM Eric Evans <4eric.evans at gmail.com> wrote:
> Dave,
>
> A customer of mine recently asked me to find a good home for his early
> 1980's Intertec Superbrain. He told me that it worked the last time he used
> it in 198? after which time it sat in his attic with the dust cover on it.
> He provided me with a number of 5.25" floppy disks, which he said contained
> the complete operating system.
>
> The chassis appears to be 100% intact, and includes the dust cover. I can
> provide a few photos if you'd like.
>
> I have not yet been able to make contact with any other classic PC
> collectors, or museums that have expressed interest. Before I send it out
> to my local recycler, I thought I'd reach out and see if you had any
> interest, or knew of anyone who might.
>
> Thank you for your time & God bless,
>
> Eric Evans
> 225homebuyers.com
> 225.242.9858 gVoice
> 316.461.8587 cell
>
--
----------------------------------------------------------------------------------
Search "Dave's Old Computers" see "my personal" at bottom!
I have gone back to trying to fix my DEC Professional 350. I have a printset
for the machine now. I think the CPU is being constantly reset.
Is there any documentation anywhere on the F11 chipset? Bitsavers only seems
to have the later J11.
Thanks
Rob
