test-drb

test-drb@ccmp.vtda.org

101090 discussions

OT Re: Pair of HP 1000 E-Series minicomputers on eBay

by kspt.tor＠gmail.com

On 30 January 2015 at 23:43, js at cimmeri.com <js at cimmeri.com> wrote: > > > On 1/30/2015 5:35 PM, Jules Richardson wrote: >> >>> And "whilst" I'm at it, why do some insist on using "blinkenlights" in re >>> CPU front panels instead of correct English -- blinking lights? >> >> >> Because it's mildly amusing. > > > Maybe the first time it was... :) It's not only that. It's because 'blinking lights' is generic, it could mean anything. But 'blinkenlights'.. you'll *know* what it means.

11 years, 6 months

Pair of HP 1000 E-Series minicomputers on eBay

by jnc＠mercury.lcs.mit.edu

Here: http://www.ebay.com/itm/141300893919 The seller has them listed at 'Buy-It-Now' for $1,800, but the listing does say 'make an offer', so you might be able to get it down a ways, to something more reasonable. They seem like they have an interesting (non-identical) set of peripheral cards. However, I know nothing of HP's, so take this all with a large grain of salt! Noel

11 years, 6 months

strange number corruption on pdp11/34

by ak6dn＠mindspring.com

-----Original Message----- >From: Noel Chiappa <jnc at mercury.lcs.mit.edu> >Sent: Jan 30, 2015 5:19 AM >To: cctalk at classiccmp.org >Cc: jnc at mercury.lcs.mit.edu >Subject: Re: strange number corruption on pdp11/34 > > > From: Don North > > > So here is the octal print routine in the M9312 console boot prom for > > the '34: > >I'm curious, is that the 'original' source, or is this dis-assembled from the >PROM contents? Is the complete program available somewhere? Disassembled and re-commented source. Available here: http://ak6dn.dyndns.org/PDP-11/M9312/ along with most all of the other M9312 boot and device PROMS. > > > So I would speculate either 'rol' or 'rolb' are always rotating in a 0 > > bit instead of the c-bit, or possibly the c-bit is stuck at zero. > >Yup, good suggestion. And that would likely explain why things boot; I can't >see too many OS's using 'ROLB'! > > Noel

11 years, 6 months

Pair of HP 1000 E-Series minicomputers on eBay

by marc.verdiell＠gmail.com

>ODERWISE IST EASY TO SCHNAPPEN DER SPRINGENWERK, BLOWENFUSEN UND POPPENCORKEN MIT SPITZENSPARKEN. This is hilarious (particularly if you know German)! I didn't know about it, thanks for posting! I'll hang it above my collection! Marc ------------------ Because the Faux German Blinkenlights is so much cooler to say. It?s a corruption of Blinenlichten from an old joke: ACHTUNG! ALLES TURISTEN UND NONTEKNISCHEN LOOKENPEEPERS! DAS KOMPUTERMASCHINE IST NICHT F?R DER GEFINGERPOKEN UND MITTENGRABEN! ODERWISE IST EASY TO SCHNAPPEN DER SPRINGENWERK, BLOWENFUSEN UND POPPENCORKEN MIT SPITZENSPARKEN. IST NICHT F?R GEWERKEN BEI DUMMKOPFEN. DER RUBBERNECKEN SIGHTSEEREN KEEPEN DAS COTTONPICKEN H?NDER IN DAS POCKETS MUSS. ZO RELAXEN UND WATSCHEN DER BLINKENLICHTEN. which dates to the 1950?s? See also the insistence on the plural of VAX being VAXEN. Warner -----------------

11 years, 6 months

Warren's 'VTserver'

by jacob.ritorto＠gmail.com

Has anyone used this software ftp://minnie.tuhs.org/pub/PDP-11/Vtserver/README against a real pdp11? I'm trying to use it to install a disk image on my 11/34, now, and after keying in the initial code, it appears to happily upload the first file (standalone 'copy') quite successfully, but then hangs. Since Warren has no real pdp11s, I'm wondering if the emulators he used whilst authoring this VTserver do something different than a real '11 that keeps the program >from proceeding. thx jake

11 years, 6 months

PDP-8/E EAE MUY Instruction

by kylevowen＠gmail.com

I've been working on a software emulation of the Extended Arithmetic Element for the PDP-8/E. I've been struggling a little with the multiply (MUY) instruction in particular. I don't have an actual EAE to test this all with, but I'd appreciate anyone with one to test out a bit of code to confirm. In any event, both SimH and the OS X PDP-8/E Simulator exhibit the same symptoms, which seem to multiply (PC + 1) by MQ and add AC, placing that result into AC, MQ. Expected behavior, best I can tell from the Maintenance Manual Volume 2, would be (PC + 1) * MQ -> AC, MQ, without the addition of the previous AC prior to executing MUY. If this is the case, then clearing AC would be essentially required, unless you want to add that value after the multiply (which could be a useful mathematical operation in some circumstances). There is a little code found on bitsavers that seems to emulate these EAE instructions: http://bitsavers.trailing-edge.com/bits/DEC/pdp8/From_Vince_Slyngstad/digit… You'll note that there is no DCA at the top of the MUY subroutine to save AC in order to add it to MQ (and complete the carry) afterward. I've been writing a comparison tool after finding that one program changed to support the software EAE failed to function correctly, hence attempting to track down some differences. If you're interested in trying on real hardware (which would be appreciated), here's what I'm running: MUY=7405 DVI=7407 NMI=7411 SHL=7413 ASR=7415 LSR=7417 MQL=7421 SCL=7403 SCA=7441 MQA=7501 CAM=CLA MQL *200 CLA CLL TAD MQVAL MQL TAD ACVAL HLT MUY 7777 HLT MQVAL, 7777 ACVAL, 7777 $ After the first halt, AC=MQ=7777, as expected. After continuing, AC=7777, MQ=0000. This would be equivalent to 7777*7777+7777=77770000, rather than the expected value of 7777*7777=77760001. Any help would greatly ease my concerns! Kyle

11 years, 6 months

UNIBUS PDP-11 memory expander card

by jnc＠mercury.lcs.mit.edu

> From: jws > I sent a bit of this thread along to Ken Omohundro who founded Able .. > If he sends anything else along, I'll get it to somewhere people can > find out about it. Neat! Thanks! > I probably have data sheets archived and I will scan them as a PDF file Those would be great - I hope they include enough detail to explain how the ENABLE hooked up the various busses, cache, etc! I live in hope that someone finds a manual, because that may be the only way these questions get answered. Also, I wonder if the product called the "ENABLE/34" (per various brochures, Muuss' email, etc) and the "ENABLE" we ran in the 11/45 were actually the same thing, and they had just changed the name, perhaps because people might have assumed, from the "ENABLE/34" name, that it was only for /34's, when in fact it could run in any UNIBUS machine? The name change may have opened up a bigger market for them. Anyway, another mystery about these things! Noel

11 years, 6 months

11/34 up! (sort of)

by jacob.ritorto＠gmail.com

Woohoo, I finally, after over a decade of being somewhat out of the pdp11 hobby, have managed to bring back to life one of my pdp11/34s! It's a plain 11/34 with dl11-w, ky11-lb, ms11-L, rl11 and a M9312 terminator/boot rom board. I have an emulex controller and some fuji 160s I'll tack on later so I can run 2.9BSD once I get the basic build confirmed safe. It's not in great shape at the moment, apparently, as these xxdp 2.5 diags are crashing left and right. But it at least boots the os and tries. I initially had, but mysteriously lost the console emulator/ODT functionality, seems it's starting at 165000 instead of 165200 at poweron. Maybe a 9312 switch mis-set... So I'm booting from the panel by calling the address of the ODT or the rl02 boot rom, which does the trick. Would anyone care to recommend some xxdp diags I should be running or next steps to isolate what's wrong / right with it? thx jake P.S. I tried to boot rsx11m v4.1, but got a strange crash with all zeroes in the stack and registers. What might that indicate? @DL0 DEVICE DD000: NOT IN CONFIGURATION DEVICE DD100: NOT IN CONFIGURATION DEVICE DY002: NOT IN CONFIGURATION DEVICE DY102: NOT IN CONFIGURATION MEVICE NI002: NOT IN CONFIGURATION RSX-11M V4.1 BL35 124.K MAPPED SYSTEM CRASH AT LOCATION 000000 REGISTERS R0=000000 R1=000000 R2=000000 R3=000000 R4=000000 R5=000000 SP=000000 PS=000000 SYSTEM STACK DUMP LOCATION CONTENTS 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 000000 CRASH -- CONT WITH SCRATCH MEDIA ON DY0

11 years, 6 months

XXDP generic memory test

by roeapeterson＠gmail.com

I just can't seem to figure out the right XXDP file to run for a straight memory test. I've got a new (for me) pdp11/23+ with M8044 memory boards, and I'd like to run memory tests, but I'm damned if I can figure out what, exactly, to run. This is XXDP 2.5 Thanks for any advice.

11 years, 6 months

strange number corruption on pdp11/34

by jnc＠mercury.lcs.mit.edu

> From: Don North > So here is the octal print routine in the M9312 console boot prom for > the '34: I'm curious, is that the 'original' source, or is this dis-assembled from the PROM contents? Is the complete program available somewhere? > So I would speculate either 'rol' or 'rolb' are always rotating in a 0 > bit instead of the c-bit, or possibly the c-bit is stuck at zero. Yup, good suggestion. And that would likely explain why things boot; I can't see too many OS's using 'ROLB'! Noel

11 years, 6 months

Jump to page:

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

1999

1998

1997

test-drb