TUHS January 2003

tuhs@tuhs.org

20 participants
23 discussions

Re: [pups] The infamous 2.11BSD patch archive

by Steven M. Schultz

Hi - > From: David Evans <dfevans(a)bbcr.uwaterloo.ca> > What's up with the 2.11BSD patch archive? I assume that the version Both it and the mirror are up and running. There are quite a few netblocks that have portscanned/spammed/whatever me here (dialups and cablemodems for the most part) and they're listed in the packet filters so if you're seeing timeouts, etc connecting that's probably the reason. > in the Unix Archive is the original release and does not have … [View More]

22 years, 2 months

[pups] The infamous 2.11BSD patch archive

by David Evans

This *must* be a FAQ, but I didn't find a real answer to it anywhere. What's up with the 2.11BSD patch archive? I assume that the version in the Unix Archive is the original release and does not have these patches applied. The mirror to which 2bsd.com referrs is gone and I don't want to pound on Steve's site if I don't have to. Any suggestions? Once I get the files I presume I'm just supposed to feed them through patch in sequence (with the appropriate options, of course). -- David … [View More]

22 years, 2 months

[pups] PDP-11 happily booted

by David Evans

Yanked a SCSI disk and the penguin could manage dding the simh image on to it. The PDP-11 booted quite happily. -- David Evans (NeXTMail/MIME OK) dfevans(a)bbcr.uwaterloo.ca Ph.D. Candidate, Computer/Synth Junkie http://bbcr.uwaterloo.ca/~dfevans/ University of Waterloo "Default is the value selected by the composer Ontario, Canada overridden by your command." - Roland TR-707 Manual

22 years, 2 months

Re: [pups] Making a TK50 2.11BSD boot tape for an 11/73

by norman＠nose.cs.utoronto.ca

If all that is needed is to concatenate three files into a single tape file, with each new file aligned on a block boundary, isn't (for f in f1 f2 f3; do dd <$f conv=sync; done) >/dev/rmt0 sufficient? The only time I had to do anything like this, the target system was a MicroVAX; hence the tape had to have ISO labels, and the program to be booted a particular tape filename. I don't remember how I handled that; probably I used one of the several public-domain tape-label-writing … [View More]

22 years, 2 months

[pups] Making a TK50 2.11BSD boot tape for an 11/73

by David Evans

Howdy. I'd like to confirm that somebody has successfully made a TK50 boot tape for 2.11BSD using a TK50Z attached to some other Unix box. In my case it will likely have to be Linux, though IRIX might be doable. It *should* work, after all, but, well, you know. :) -- David Evans (NeXTMail/MIME OK) dfevans(a)bbcr.uwaterloo.ca Ph.D. Candidate, Computer/Synth Junkie http://bbcr.uwaterloo.ca/~dfevans/ University of Waterloo "Default is the value selected by … [View More]

22 years, 2 months

Re: [TUHS] unsigned division in V7's C

by Wolfgang Helbig

Warren replies: >Not sure if: > >http://www.tuhs.org/Archive/PDP-11/Bug_Fixes/Net.v7bugs/0017 > >is a bug fix for this. And Dennis replies: >Does > http://www.cs.bell-labs.com/who/dmr/odd.html#muldiv >suffice to explain the behavior Thanks for the replies, but the bug I found is about unsigned int's and not long int's. The V7 C code simply the DIV instruction for unsigned division. The dividend is put in the low word of a register pair with the upper word cleared. … [View More]

22 years, 2 months

re: unsigned division in V7's C

by Dennis Ritchie

Helbig observed > while wondering how unsigned integer division is implemented in C > I found a bug in V7: a/b and a%b with b >= 2^15 does not give the expected > results, if a and b are unsigned int's. Does http://www.cs.bell-labs.com/who/dmr/odd.html#muldiv suffice to explain the behavior? Dennis

22 years, 2 months

unsigned division in V7's C

by Wolfgang Helbig

Hi, while wondering how unsigned integer division is implemented in C I found a bug in V7: a/b and a%b with b >= 2^15 does not give the expected results, if a and b are unsigned int's. Was this bug ever noticed or even fixed? Greetings, Wolfgang Here is a program showing the bug: main() { unsigned int a, b; a = 60000; b = 40000; printf("a/b: %u, a%%b: %u\n", a/b, a%b); b = 25000; printf("a/b: %u, a%%b: %u\n", a/b, a%b); } The above … [View More]

22 years, 2 months

Re: Patches to improve 6th Edition

by norman＠nose.cs.utoronto.ca

A belated rejoinder to: This bug existed from (at least) the Fifth up until the Eighth editions from 1127 (BTL research). The Ninth edition had much rewrites in the kernel and the algorthim was changed at that point. You're welcome. I can't remember, though, whether I fixed it on purpose or as part of the many general cleanups and restructurings I did at that point. And I didn't do enough of it; recently I discovered a dumb problem that I probably introduced in the same cleanups, … [View More]

22 years, 2 months

Re: [pups] Mail delivery failed: returning message to sender

by pete＠dunnington.u-net.com

On Jan 6, 19:01, Wolfgang Helbig wrote: > Richard L. Hamilton searches: > >The files > > > >http://minnie.tuhs.org/UnixTree/V7/usr/sys/dev/rl.c > >http://minnie.tuhs.org/UnixTree/V7/usr/sys/conf/mkconf.c > > > >don't seem to match - mkconf.c wants to generate references to > >rlopen() and rlclose(), which don't exist in that version of rl. > >What I'm really looking for is the right version of driver(s) etc. > > It seems that a version of … [View More]

22 years, 2 months

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TUHS January 2003