Paul Koning wrote:
> Yes, and some emulations have done this, such as Phil Budne's famous work in
> SIMH.
Famous?? I'm famous???!!!
To be fair, I started with Douglas W. Jones' PDP8 Emulator.
Which reminds me of:
If I have seen farther than others, it is because I was standing on the
sh
> Also trying to figure out how to set switches as in other KA/KL sims.
> I can't seem to find a means of doing that in RC's KL.
https://github.com/rcornwell/sims/blob/master/PDP10/kl10_fe.c
has:
extern uint64 SW; /* Switch register */
/* Handle seco
> But the sector format is a different matter. If it's designed for
> PDP-11 and friends, presumably it has a 512 byte sector size.
> For PDP-10 or -20 use you'd presumably want a sector size consisting
> of some round number of 36 bit words.
576 byte sectors (128 words), IIRC.
The unit of allo
> From: "Christian Brunschen"
> Date: Mon, 8 Mar 2021 21:45:11 +
> Subject: Re: [simh] recovering software for the MIT Whirlwind
> To: s...@groups.io
>
> https://www.historia-mollimercium.com/whirlwind/ww-page.html
> https://www.historia-mollimercium.com/whirlwind/Whirlwind-Software-Recovery-P
> > From: Lars Brinkhoff
> > > Anyone ever heard of the Systems Concepts SC-4 computer?
> Noel Chiappa via cctalk wrote:
> > Given the SF address, and Peter Samson's signature, this is the _the_
> > Systems
> > Concepts. Never heard of the SC-4, though.
> >
> > One oddity: the cover l
UUCP?
I can't make ANY assertions about version or pedigree of the files
(which came to me in 1981 when I was using a PDP-10), but they APPEAR
to be from Ron Cain himself, from SRI-KL (TOPS-20):
ftp://ftp.ultimate.com/pdp10/c80.tar.gz
Which contains runtime files from November 1979, and compiler files
> From: Noel
> > From: Jon Elson
>
> > As far as I know, there was no VM/360. There WAS VM/370, which was out
> > in the early 1970's
>
> CP/67, which was a semi-product, and ran only on 360/67's, was basically the
> same functionality as VM/370. (I get the impression that the code was
As seen on PDP-8 Lovers list:
> From: "Jones, Douglas W"
> To: PDP8-Lovers
> Subject: [PDP8-Lovers] Book on punched cards
>
> A new book has come out that I helped create:
> Print Punch
> published by CentreCentre, London
> 40 pounds sterling for the special edition (print run, 100 books
I wonder if it's for the typesetter that's the subject of:
https://www.cs.princeton.edu/~bwk/202/summer.scanned.pdf
> KCC is mostly ANSI compliant, but it needs to use the TOPS20 linker, which
> has a limit of six case-insentive characters.
LINK has support for long (up to 72 character) symbols, and it appears
FORTRAN v11 can generate them, but the MACRO assembler may never have
gotten support;
http://pdp-10.
Noel wrote:
> The PDP-6 and KA10 (basically a re-implementation of the PDP-6 architecture)
> both had cheapo versions where addresses 0-15 were in main memory, but also
> had an option for real registers, e.g. in the PDP-6: "The Type 162 Fast
> Memory Module contains 16 words with a 0.4 usecond cyc
Have you looked at http://www.math.utah.edu/~beebe/software/ieee/ ?
Which says:
"All C programs can also be compiled with old-style Kernighan and
Ritchie C. However, inasmuch as I now have access to only one such
old compiler, with more than 35 others supporting 1989 Standard C,
I
See the v6 dn (IV) man page:
http://man.cat-v.org/unix-6th/4/dn
NAME
dn - DN-11 ACU interface
DESCRIPTION
The dn? files are write-only. The permissible codes are:
0-9 dial 0-9
: dial *
; dial #
- 4 second delay for second dial tone
$ file zap
zap: mc68k COFF object not stripped (demand paged)
ISTR A/UX had a COFF. 68k SunOS used a.out format.
A general discussion of population count:
https://stackoverflow.com/questions/8590432/when-to-use-parallel-counting-mit-hakmem-for-bitcount-when-memory-is-an-issue
> Anybody know what the story is there?
It's an indicator that the pre-processor needs to be run first.
The v6 code I've seen never used an include file for the stty/gtty
calls (as opposed to using a struct defined in an include file) so I'm
betting it was a speedup to not fork/exec another proce
I'm in Arlington (once called West Cambridge) and have an HP 6270A
(table top reader w/ RS232 interface) sitting on the floor next to me.
The feed roller had disolved into a puddle of goo, which I cleaned
up/out and was able to send some cards thru, and see output on the
serial port. I've never re
> 9643TC-B1
http://bitsavers.trailing-edge.com/components/fairchild/_dataBooks/1978_Fairchild_Full_Line_Condensed_Catalog.pdf
pdf p.219
Dual TTL to CCD/MOS Drvr
Pinout?
http://ic72.com/pdf_file/d/161010.pdf
FreeBSD termcap has:
dm2500|datamedia2500|2500|datamedia 2500:\
:do=^J:al=15^P\n^X^]^X^]:le=^H:bs:ce=^W:cl=\177:\
:cm=^L%r%n%.%.:co#80:dc=10*^P\b^X^]:dl=10*^P^Z^X^]:\
:dm=^P:ed=^X^]:ei=10\377\377^X^]:ho=^B:ic=10*^P^\^X^]:\
:im=^P:li#24:nc:nd=^\:pc=\377:so@=^N:se
Looks to me like the circuit board says "ADM 3R"
It might be interesting to make a virtual PDP-11 (simulator) that *IS*
more virtualization friendly, and find out how much user code depends
on the existing behavior... And then write a PDP-11 hypervisor!
BUT existing PDP-11's aren't even friendly restarting after a page
fault, which is required
Spotted next to driveway of 7 Central St, Arlington MA
Model C6075A.
Attached sign says "needs new print head"
https://h10057.www1.hp.com/ecomcat/hpcatalog/specs/provisioner/05/C6075A.htm
is copyright 2006, so perhaps not "classic"
and says:
"HP Designjet 1055cm Printer"
(tho 1055
FWIW, Found these bits in the TOPS-10 7.04 sources:
http://pdp-10.trailing-edge.com/tops10_704_monitoranf_bb-x140c-sb/01/10,7/anf10/chk11.p11.html
Search for ";DETERMINE THE DL10 BASE ADDRESS"
Which tries setting the following bit pattern:
DL.CNX!DL.CPE!DL.CWC!DL.11C
Those bits and others can b
Noel wrote:
> but I dunno how one would hook _that_ simulation up to a simulated host
> running a simulated ARPANET interface.
It would seem silly to simulate a bit by bit interface, so just come
up with an encapsulation of 1822 messages in TCP?
Two-octet count(*), plus 1822 leaders .
(*) an
> - Unix?
I asked around for v6 Unix with "NCP" code when the IMP code was
resurected, but never found it
> Ah, right you are: I just assumed from the name (without checking!) that it
> was some kind of variant on the DN87 - which I guess it is, just a more major
> one than I thought! :-)
The later-day TOPS-10 front-end ecosystem which included the DN87 was
called "ANF-10" (*) and included both local
I wrote:
> Now, simulating the DL10 so you can run TVs would REALLY be bringing
> back a lost artifact!!
https://github.com/PDP-10/its/issues/279
says:
larsbrinkhoff commented on Mar 31, 2017
I think the number of PDP-11s connected were limited by the address space of
the Rubin IO-11 interfac
Lars Brinkhoff wrote:
> Richard has DE10 working already, but that's not supported by ITS.
> Adding that support is not out of the question, but we want to give the
> DL10/DC76 a go.
ITS speaks TCP (over an IMP interface, which is simulated in KLH10),
so it hardly seems worth jumping thru hoops to
The following would like to find new homes: Not ESPECIALLY interested
in boxing/shipping (the docs would be easy, and would love to see them
preserved for posterity).
BOXED SunOS 4.0 doc set with 4.0.1 update
2 lg , 1 medium, 2 small boxes
Also have SunOS 4.1.2 install manual
Sun Hardware
Noel wrote:
> I _do_ have working binaries (I think) for the MACRO-11, BCPL compiler, and
> linker.. but they may or may not run under vanilla V6 (they ran on the
> much-modified MIT-V6+, which is kind of an early PWB with a lot of MIT
> additions).
I'd be interested in seeing it all preserved/ava
> And I think all the PDP-6's are gone, right?
There are some pieces (console, display) of the UWA '6 in museums:
http://www.ultimate.com/phil/pdp10/pdp6-serials.html
The odd thing about Alex Reid's photos is that the "before it left the
factory" and "towards the end of it's useful life" photos s
I've always assumed the P in PAL was for paper tape.
The Wikipedia artile for PDP-8 says that PAL-8 assembled from paper
tape into memory, so the A and L could have been for Assembler and Loader.
ISTR PAL-11A was also an "absolute" assembler (did not output REL
files), but there was also a PAL-11
How far did Foonex diverge from BB&N TENEX? If not TOO far, it might
be nice to have them both as branches in one repository, for comparison.
> From: Lars Brinkhoff
>
> This document says MIT's Lab for Nuclear Sience was busy working with
> their PDP-6 in early 1970. So that could not be the used machine the
> DynaMod group got in late 1969. That is, if those dates are accurate.
>
> http://cds.cern.ch/record/862545/files/233.pdf
The
> RFC 89 from January 1971 is interesting:
Yes, very!!
p
I never knew there had been two '6s in Tech Square. I had thought AI
and LNS (Labratory for Nuclear Science) were the only PDP-6s at MIT...
phil
> Both One-Word and Two-Word Global Byte Pointers were added at the same
> time as extended addressing, according to the HRM. Simple "Global Byte
> Pointer" would have been inherently ambiguous.
OWG's were added to the KL ucode later:
;251ADD CODE FOR ONE WORD GLOBAL BYTE POINTERS.
; TO
Rich Alderson wrote:
> There are also Two-Word Global Byte Pointers (which I've never seen
> abbreviated) which carry the standard "any size byte at any position"
Maybe they were just Global Byte Pointers? OWG's were a late
addition. I was a member of the FORTRAN-10/20 v10 project to make it
gen
A quick google search found:
https://groups.google.com/d/msg/comp.os.linux.m68k/-8iweTkxPNI/L2-hPrW_ryAJ
mentions:
I have an ancient Unix system made by ProComp in Switzerland that has a
68000 CPU, 4 MB RAM and that 68451 MMU. Unfortunately, I didn't get a hard disk
or system media for this oldt
Jon Elson wrote:
> On 08/17/2016 01:07 PM, j...@cimmeri.com wrote:
> > To my surprise, not all SCSI tape drives are created equal.
> Right, there was SCSI, SCSI-II and SCSI-III. Also, a lot of
> drives did not correctly support SOME features that others
> did. it got VERY messy. Other drives
I ran into (possibly whenthis trying to send some files to the LCM TOPS-10).
Found this:
http://www.columbia.edu/kermit/ckcbwr.html
C-Kermit 7.0 is the first release of C-Kermit to use fast (rather than
robust and therefore slow) protocol defaults: long packets, sliding windows,
control-ch
> I was considering scanning "PDP-16 Computer Designer's Handbook"
> (1971, DEC) and "Designing Computers and Digital Systems" by
> Bell, Grason, and Newell (Digital Press, 1972) and have a couple
> of questions:
>
> 1. Are there already existing scans?
The second appears to be available at:
http:
CIRC is an MIT/ITS instruction; ISTR a flavor of "rotate"
p
Noel wrote
> Actually, as an operating system, ITS is far more interesting (virtual
> devices, etc)
Yeah, ITS isn't user (spelled LUSER) friendly, but it sure is neat!
In the past week I was just wondering if anyone has ever written an
"MLDEV" handler for a non-ITS system.
"MLDEV" was the virtual
No personal experience, but SIMH supports the PDP-7,
and there is a "macro7" cross-assembler at:
https://github.com/simh/simtools/tree/master/crossassemblers/macro7
Tho I did debug hand entered versions of DDT and MACRO for the PDP-1,
so I've experienced the particular kind of pain involved in thi
My favorite quote (by my one-time boss at BU, Barry Shein):
"AIX, it will remind you of Unix"
Eric Smith wrote:
> Am I misremembering, or doesn't AIX use substantially different
> commands for managing things, rather than the commands typically found
> in /sbin and/or /usr/sbin on "normal" Unix sy
I purchased a BBII kit in the 80's (to try and build a programmable
terminal), but never got the board working.
I have the contents of the 8" floppy that came with it archived at:
ftp://ftp.ultimate.com/misc/bb2.zip
Archive: bb2.zip
Length Date TimeName
--
Rich wrote:
> [1] "Tops-10" was simply a renaming of an operating system which began on the
> PDP-6 in 1964 and continued in an uninterrupted line of development up
> through the final release, Tops-10 v7.04 (1988), and maintenance (v7.05,
> 1993).
Are you sure about the captialization
Michael Thompson wrote:
> 1026 TOPS-10 DEC Development Marlboro, MA KL1099 Tri-SMP Scrapped 12/14/97
> 1042 TOPS-10 DEC Development Marlboro, MA KL1099 Tri-SMP Scrapped 12/14/97
> 1322 TOPS-10 DEC Development Marlboro, MA KL10 Tri-SMP
This is almost CERTAINLY derived from the list of CPU (APR) ID
Brad Parker wrote:
> Remember sumex-aim ? SumMacC.
> Anyway, I think the Kinetics fastpath was compiled with that
Perhaps originally But when the FastPath code arrived at Shiva it
was using the SunOS 4 native compiler on Sun3. I moved it to gcc on Sun4.
The 6/88 KIP release has C
Noel wrote:
> I wrote:
> > Any plans to allow USB "target" (as opposed to "host" -- I dunno if
> > those are the correct terms)
>
> 'host' and 'device' are the two modes for USB, IIRC.
>
> > to allow the board to be connected to a modern computer as a
> > peripheral?
>
> Not sure I
Noel,
Any plans to allow USB "target" (as opposed to "host" -- I dunno if
those are the correct terms) to allow the board to be connected
to a modern computer as a peripheral?
phil
> Is there a subset of this group for people who like to program in
> languages or language implementations or libraries that are no longer
> in common mainstream use? Or other groups for such a thing?
I don't think of it as "retrocomputing" per se, but I maintain a
SNOBOL4 implementation: http://
If I were going thru the trouble, I'd want build a TX-0 clone!
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