test-drb June 2010

test-drb@ccmp.vtda.org

167 participants
232 discussions

Suggestions for repairing HP tape drive capstans?

by ard＠p850ug1.demon.co.uk

I have a number of HP QIC tape drive units -- I think it's 2 off 9142, 3 off 9144 (1 3-board, the other 2 are single-board) and a 9145 [1] all with hte same problem. The rubber capstan has turend to goo. [1] There's a darn 68000 processor in that drive, unlike the 68B09s in the other units. Eeek! The capstan is a rubber 'tyre' on a metal hub, the latter being glued to the motor spidnle. The diameter of the hub is around 12mm (but I wil measure that accurately) and the overall diameter of the tyre is perhaps 18mm (it's going to be hard to measure, sure the fact I don't have a solid one :-() Anyway, does anyone have any suggestions as to suitable material that I can obtain in the UK to repair this? Assume as ever I have a reasonable workshop and am not affraid to pull the drives to bits :-) -tony

14 years, 7 months

DEC RQZX1 and KDJ11-E boot problem?

by nigel.d.williams＠gmail.com

On Sun, Jun 13, 2010 at 3:11 AM, Zane H. Healy <healyzh at aracnet.com> wrote: > What version of RSTS/E, and does it support the RQZX1? ?I think that support > might have come with 10.1. Yes, I am using 10.1 > I'm not sure if anyone has actually attempted what you're doing, some of us > were discussing this a year or two ago, but I know I've not had time to try > it. I tried all the obvious combinations for imaging the hard disk, the final one being: SIMH using the SCSI drive as a block device (Linux: attach rq /dev/sdc) and confirming that SIMH boots the drive successfully after the install, however on re-attaching to the 11/93 it still throws the Drive not ready error when trying to boot. > Of course you may simply have some sort of hardware issue going on there as > well, I'm not familiar with the RQZX1. The drives passes the built-in RQZX1 diagnostics, which includes read/write/verify tests etc. I formatted the SCSI drive via the RQZX1 too (prior to using the drive on Linux via SIMH to install RSTS/E), just in case the format process was doing something special (although I can't imagine what since I understand MSCP masks drive specifics). A next posible step is to use this source-code for a MSCP boot so I can catch the initial boot load and see what is in the first disk block (containing the next level bootstrap): http://www.slowdeath.com/AK6DN/PDP-11/M9312/23-767A9/23-767A9.lst I will also try a different model of SCSI drive too - perhaps the Quantum Fireball is too much of a good thing (4200RPM 2.1GB); I have an old clunker of a Quantum ProDrive 80S (3600 RPM 80MB!) Does anyone know how SCSI ID's are mapped to MSCP LUNs? so far the RQZX1 appears to map the first SCSI ID (in my case #4) to LUN 0 (which is what I want) - I am assuming it just does them in sequence.

14 years, 7 months

DEC RQZX1 and KDJ11-E boot problem?

by nigel.d.williams＠gmail.com

I "imaged" (via SIMH/Linux [*]) a Quantum SCSI drive with RSTS/E and connected to the RQZX1 and via the built-in configuration menu able to see the drive (drive label appears at the correct SCSI ID) and run the "read" diagnostics successfully. But using the KDJ11-E boot menu I get an error "10 - Drive not ready" - is there something I need to do in the KDJ11-E or the RQZX1 that I have overlooked? Any ideas would be appreciated. I now have access to the KDJ11-E manual thanks to Bitsavers. But no documentation on the RQZX1, other than what I can glean from the built-in menus. [*] SYSGEN'd and then "dd" the resulting file to the drive. If I "od -o" the drive I can see location 0 and 2 have the DEC boot signature. RQZX1 SCSI Host Adapter Monitor Software Rev 2.2 23-Jun-1993 (C) Digital Equipment Corporation 1992 Hardware Rev L ***************************** Q-bus Configuration ****************************** * * * DMA : Burst length : 01 CSR0 : 172150 MSCP * * Block length : 08 CSR1 : 174500 TMSCP * * Burst delay : 01 * 1.6 us * * * * LUN CSR Mode Drive no. Start LBN End LBN Device Type * * ---------------------------------------------------------------------------- * * DU 0 0 MSCP SCSI ID 0 0000000000 0004124732 Disk * * * * * * * * * * * * * * * * Type Control-Z or <CR> to return to previous menu * * * ********************************************************************************

14 years, 7 months

PS/2 model 77s

by SUPRDAVE＠aol.com

In a message dated 6/11/2010 7:08:56 P.M. Eastern Daylight Time, doc at vaxen.net writes: On 6/9/10 4:00 PM, Zane H. Healy wrote: > > >> On Wed, 9 Jun 2010, William Donzelli wrote: >> >>> I think these machines are all fitted with a pretty standard set of >>> guts - I do not think you will find any weird cards or huge disks or >>> anything. I have not tested these machines. Condition is so-so - about >>> what you would expect from a warehouse. >> >> Actually I was thinking these might have some nice small disks. I have a >> nice stash of 100MB and 200MB 1" high 3.5" SCSI HD's that came out of some >> model of PS/2. I bought them 10+ years ago from someone that scrapped out a >> whole pile of PS/2's. They're great for my PDP-11. > Are these Model 77 or Model 77i? > Good system, either way, but the 77i is IDE, not SCSI. For the mod 77, there are two planars used. The Bermuda for the SCSI models and Lacuna for the IDE type.

14 years, 7 months

<OT> Pentina

by ken＠seefried.com

I lost Fleabag, my 20-something year old cat and last pet I had since college days on the 31st. So...right there with you. KJ

14 years, 7 months

<OT> Pentina

by mtapley＠swri.edu

At 1:33 -0500 6/10/10, Tony wrote: >This alas is not a problem for me any more. Poor Pentina passed away >yesterday. Here's to Pentina <clink> may his soul always have a warm monitor to rest on! -- - Mark 210-379-4635 ----------------------------------------------------------------------- Large Asteroids headed toward planets inhabited by beings that don't have technology adequate to stop them: Think of it as Evolution in Fast-Forward.

14 years, 7 months

SuperKIM

by spectre＠floodgap.com

I'm cleaning out my closet and came upon (again) one of my collector's mysteries, a microproducts (sic) Superkim (or SuperKIM). This appears to be an evaluation board (everything is socketed) that slots into a larger chassis. It has a Rockwell 6502 and several 6522s, and a tremendous amount of wirewrap on the bottom which may be after the fact. Anyone ever encountered one of these? I have the manual for it but it seems to be more of an experimenter's board rather than a substitute for the KIM like the AIM-65. -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- Don't Be Evil. -- Paul Buchheit --------------------------------------------

14 years, 7 months

Diloq MQ 606 manual wanted

by jdr_use＠bluewin.ch

I would like to reuse some former PC MFM drives for use in a PDP11, with a Dilog MQ606 controller. Anyone know of an online manual on this controller ? Jos

14 years, 7 months

Cromemco Z2-D system and accessories in Seattle, WA - Wish to donate

by wysoft＠hotmail.com

Greetings, I'm posting here to inquire about the possibility of someone wanting to take this old Cromemco off my hands. I appreciate all that it is, and it has some family history behind it, but no one else in my family seems to want it, and it's far beyond my era of interest, so... Here we are. The system itself is in good physical shape - no damage, structural or cosmetic. My late uncle also built a wooden rolling base for the system, which includes additional power outlets for peripherals, and a remote reset switch. He developed software for Boeing on this machine, and I imagine it was pressed a lot. Based on the advice of others, to avoid damage to the unit I have not powered on the unit or plugged it in. Hardware installed in unit: CPU board, 4FDC, 8PIO, two 64KZ boards Additional hardware, still in boxes: 16-FDC, four 16KZ boards, two WANGCO floppy drives Zenith Z-29 terminal is also included if you wish, though I had originally intended to keep it. I used it over a year ago to do VAX stuff, and it still worked. There is also a printed manual. Printed and bound documentation: Word Processing System, Cromix Operating System, Database Management System, Cromemco Extended BASIC, Z-80 Macro Assembler, Link and Lib, CDOS, FORTRAN IV, Cromemco System & Components, Cromemco Trace System Simulator, Zilog Z-80 Tech Reference There's also a huge stack of assorted manuals, catalogs, etc. My uncle really kept everything. Also included are a fair amount of my uncle's scribblings and notes, some of which might be helpful to you. Software (almost too much to list): CDOS 2.36, CDOS 2.54, Z80 Macro Assembler, Word Processing System 4.06 & 6.0, FORTRAN & utilities, CROMIX, Database Management System 3.05, Database Report Language 1.0, Relocatable Assembler, BASIC 5.2, 16K Extended BASIC, COBOL, Database 0.02 (?), Drivers (?) I'll gladly snap photos if you wish. I would really, really like to avoid having to dispose of this stuff. I never knew my uncle, but if I hadn't taken this stuff from where it sat for the past twenty years in my grandmother's basement, it would have ended up in the trash. Hopefully someone here can make good use of it. I'm in Bremerton, WA. I'll drive to meet you within a reasonable distance. Please let me know if you have any additional questions. Thanks, Jeff _________________________________________________________________ The New Busy think 9 to 5 is a cute idea. Combine multiple calendars with Hotmail. http://www.windowslive.com/campaign/thenewbusy?tile=multicalendar&ocid=PID2…

14 years, 7 months

Programing PDP-8 assembler - details

by bqt＠softjar.se

Ben <bfranchuk at jetnet.ab.ca> wrote: > Johnny Billquist wrote: > >> > Why use a line editor? There are several full screen editors for OS/8. >> > Really fast and nice ones. > > Where? Like others mentioned, you have VTEDIT, which you can find at ftp://ftp.update.uu.se/pub/pdp8/os8/teco8/ for instance. I also have VISTA, which is a nice editor that can handle various different terminals. However, for some reason I can't seem to find it in our ftp archive right now. I was pretty sure I put it up there at some point. But maybe someone else knows a location where you can find it. Johnny

14 years, 7 months

← Newer
1
...
14
15
16
17
18
19
20
...
24
Older →

Jump to page:

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 June 2010