Hello all,
I have transferred some simh .tap files to my PDP-11/23+ running RSX11M+.
There I have tried to use VCP to attach them to a virtual device but I keep
getting an invalid record format error. I then realized the simh .tap files
most likely aren't organized correctly. If I attach them to TS0 in simh I
can work with them. So now I am trying duplicate a tape into a new .tap
file created using VCP. I can't for the life of me get it to work though.
BRU doesn't support tape-to-tape and FLX doesn't complain but also never
completes. Is there a process for tape duplication under RSX?
The images were first transferred to my PiDP-11 using ftp in binary mode
over TCP/IP. From there I used NFT in image mode and I tried both record
and block modes.
I have also seen the simh tape tools but there doesn't seem to be a tool to
convert a simh file back to what would be on a real tape.
Anyone have any information or pointers to get this to work?
Thanks!
-Peter
I was curious and had a spare benjamin for one of these from eBay,
thinking it would be a handy USB to SCSI adapter for convenient
imaging of old drives, as it was mentioned as one a month or two
ago on the Reddits.
I'd like to find a manual and hear anecdotes. Mine is a model T4,
has USB 2.0 and Firewire 800, circa 2005. I was surprised to see
they were made in New Berlin, WI. I don't see any mention of
this model on their web site https://digitalintelligence.com/
nor any mention of "ultrablock" in my CCtalk archives.
- John
Can anyone here tell me what tool I can use to create
DSK, DMK or IMD files from files with the extensions
"raw" and VOL? I am once again trying to get the CPM
Adaptable System for UCSD Pascal to work on an emulator.
I would also like to try and get the PDP-11 version of
UCSD Pascal running again and that requires the same
ability.
bill
I have mounting brackets for 3.5" disk drives in an Antec Sonata III
500 case. They're nice metal trays with mounting holes on the bottom
and spring metal clips on the sides to hold them into the panel inside
the case. For some reason, I have six of them, but the case has only
four slots. Does anybody need them?
https://archive.org/details/manualzilla-id-7235982
I have been talking with Paul Anderson about some PDP-11/05 parts.
End of January Paul wrote about medical problems and possible surgery.
I have not been able to get in touch with him since and hope he is OK.
Has anyone here heard anything about Paul since January?
Thanks
Tom
Hey gang, a few months ago I had found the 1968/1969 document spec of
RS-232. But now, I'm unable to find it again !
At Internet Archive, there is one link/reference to it, but it appears to
just be the cover page (which does have the date of August 1969).
I see the EIA RS-232-C spec dated from 1991 (but I think that date is just
marking when EIA took over stewardship of the standard, but the spec should
reflect/match the original 1969 one).
In the manual for the DataSet 103C (from a few years earlier than 1969), it
outlines signal lines all labeled like RS-232. But I wouldn't call it an
RS-232 spec.
Like most standards, it takes a number of years for a community/critical
mass of products to understand it and adopt it correctly. Even ASCII
wasn't globally recognized and adopted until maybe 15 years after it was
introduced? So I was trying to track down the "earliest mention" of
RS-232, to pinpoint it really being from 1962.
Technically it appears the EIA "guards" that spec, and makes it expensive
to officially download it. Maybe they took an initiative to try to scrub
earlier editions from the public web, maybe that's why it's harder to find
now? But I was pretty sure I found a scanned copy of it at some point (the
Aug 1969 one).
If anyone happens to have a printer version (of a 1969 or earlier RS-232
spec) - it would at least be nice to know that exists somewhere. I'm
pretty sure that "original spec" called out +/- 3 to 25V, later ones maybe
used 20V or 15V.
-Steve
I have posted my PDP8 and PDP12 paper tape images onto my Google Drive
(where they are also available to CHM/Al Kossow for their "bits" collection.
https://drive.google.com/open?id=0B2v4WRwISEQRWWFFdVpCZWFTZEU&resourcekey=0…
Look in bits/DEC/pdp8 and bits/DEC/pdp12 for folders "From_JayJaeger".
There is a PDF of the contents of BOTH directories in each one (it is
the same PDF in each case).
JRJ
FWIW, both Grok and ChatGPT say the same thing.
The RS-232 standard was first described in 1960 by the Electronic Industries Association (EIA). Its full original designation was EIA RS-232, where “RS” stands for Recommended Standard.
