test-drb February 2008

test-drb@ccmp.vtda.org

236 participants
373 discussions

Disk controllers- RLL MFM IDE- ISA and PCI

by tpeters＠mixcom.com

Anyone need disk controllers for ISA bus and MFM or RLL drives? I stumbled on these (I'm not connected with this vendor) and thought of you guys immediately. Most of this stuff is $5 or $10. AT style full length MFM disk controller $14.95 http://www.alltronics.com/cgi-bin/item/92C071/14/AT%2DMFM%2DController DTC - 5160 8-bit ISA bus RLL disk controller $4.95 (five dolla, five dolla!) http://www.alltronics.com/cgi-bin/item/97C014/14/DTC%2D5160 DTC - 5280 - 97C045 MFM 16-bit ISA disk controller http://www.alltronics.com/cgi-bin/item/97C045/14/DTC%2D5280 DTC - 7287 - 97C015 RLL 16-bit ISA disk controller $4.95 http://www.alltronics.com/cgi-bin/item/97C015/14/DTC%2D7287 Dual high-speed AT 16550 serial card $27.95 http://www.alltronics.com/cgi-bin/item/98C011/14/High%2DSpeed%2DI%2DO%2DCon… IDE ISA Hard/Floppy I/O - Controller $1.95 no data http://www.alltronics.com/cgi-bin/item/97C009/14/IDE%2DISA%2DHard%2DFloppy%… PC ISA - Serial/Parallel PCB - 24C002 $4.95 http://www.alltronics.com/cgi-bin/item/24C002/14/PC%2DISA%2DSerial%2DParall… VLB I/O IDE - Controller - 98C016 $9.95 http://www.alltronics.com/cgi-bin/item/98C016/14/VLB%2DI%2DO%2DIDE%2DContro… PCI IDE Only - Controller $9.95 no data http://www.alltronics.com/cgi-bin/item/98C034/14/PCI%2DIDE%2DOnly%2DControl… TEAC Tape Transport - Cleaning Kit - 92Z008 $2.99 no data http://www.alltronics.com/cgi-bin/item/92Z008/14/Tape%2DTransport%2DCleanin… TTL to Composite - Video Adapter $4.95 Requires +12V (or +5V) and video, vertical drive, horizontal drive signals. Produces RS-170 type composite video output. Fully assembled with 74125 sync regenerator, 3 terminal regulator, 2N2222 transistor. Only 2" square. http://www.alltronics.com/cgi-bin/item/92C024/14/TTL%2Dto%2DComposite%2DVid… Also: 3.5" diskette drives, 5.25" diskette drives, assorted old motherboards, drive mounting rails, etc. ----- 842. If you find yourself in a hole, the first thing to do is stop diggin'. --... ...-- -.. . -. ----. --.- --.- -... tpeters at nospam.mixcom.com (remove "nospam") N9QQB (amateur radio) "HEY YOU" (loud shouting) WEB: http://www.mixweb.com/tpeters 43? 7' 17.2" N by 88? 6' 28.9" W, Elevation 815', Grid Square EN53wc WAN/LAN/Telcom Analyst, Tech Writer, MCP, CCNA, Registered Linux User 385531

16 years, 4 months

VAX wish list.

by RodSmallwood＠mail.ediconsulting.co.uk

Hi I have nearly all I need to do a Vax cluster. Namely a VAX 4000 model 200 , a 300 and a 500. I'm a few bits short for the 300.: 1. The Console Bulkhead Assembly. (70-27400-01) Its like a door to the Processor / Memory mounting area. 2. The top part of the two part front door on the BA440 3 One or more RF series drives and the Bezel Assembly (70-27049-02) 4. Filler strips to go over empty Qbus slots. 5. A KZQSA SCSI controller. I can get this stuff from theUS but the price is a rip-off and the shipping horrendous. If anybody has or knows where to get any of these items in the UK or Europe I would be pleased to hear from them. Rod Smallwood The DECcollector

16 years, 4 months

Sockets (was: Ebay grrrr #743)

by dm561＠torfree.net

Date: Fri, 22 Feb 2008 10:26:35 -0500 (EST) From: der Mouse <mouse at Rodents.Montreal.QC.CA> Subject: Re: Sockets (was: Ebay grrrr #743) >> I've been told that gold-plated sockets are a waste of money if what >> you're going to be socketing is tinned-lead packages. Something >> about gold-to-gold and tin-to-tin makes for the best results. >Well, it reduces corrosion. ><snip> >I'd say gold/gold is probably best, since it's the most >corrosion-resistant in both these senses. But whether I'd prefer >gold/tin or tin/tin depends on the tradeoffs. >der Mouse ---------- We've had this thread before, but don't forget about stuff like Stabilant 22. I had endless problems with sockets in AIM65s (similar to the cheap sockets in a PET) installed in a plant full of oil and other contaminants in the air; finally pulled them all out, cleaned and treated the sockets & chips with Stab 22, and no more problems. Also did my PETs at that time and never had a problem with IC sockets in them either; still running fine today. mike

16 years, 4 months

flying reading of floppy media

by aek＠bitsavers.org

> A thick rigid base and a very thin, > hard cap, with the media immobile between them. The whole assembly > would turn in the reader. I don't know whether the media could actually > be read through that It was possible to do this. Univac metal tape reels actually had a spool of mylar tape to isolate the metal tape from the heads, for example. There would be a lot of loss in the transducer, though, which you may be able to compensate for by using a magnetorestrictive instead of inductive head. I haven't pulled apart an Iomega bernolli drive to see if you could fly a 5" floppy over the plate and use the head in it for recovery.

16 years, 4 months

media reading and temperature

by aek＠bitsavers.org

> So I'm wondering if temperature has any affect on media readability. yes. You walk a very dangerous line with condensation reading cold media, though. It has been my experience that mag tapes shed more if they are warm, so after baking, I let them return to room temperature in the tape reading room, which is dehumidified to as low as the dehumidifier will go (< 35%)

16 years, 4 months

Fwd: [alt.sys.pdp11] Ebay: pdp 11/34 + lots of stuff

by legalize＠xmission.com

This message has been forwarded from Usenet. To reply to the original author, use the email address from the forwarded message. Date: Fri, 22 Feb 2008 07:38:28 +0100 (CET) Groups: alt.sys.pdp11 From: Jeff Davis <jdaviscl2 at soupwizard.com> Org: Aioe.org NNTP Server Subject: Ebay: pdp 11/34 + lots of stuff Id: <Xns9A4BE64E9F5D4jdaviscl2soupwizardc at 194.177.96.78> ======== Just fyi, it's not my auction, but there's a pdp-11/34 in two racks, a tape drive and large hard drives on ebay. Two days left, I figure somebody with a big truck wants to save it. I normally wouldn't post about an ebay auction, but this one doesn't mention pdp-11 in the auction title and seems to have been overlooked. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=120223434668 jdavis

16 years, 4 months

RLV12 placement in H9278-A question

by tiggerlasv＠aim.com

On Feb-21-08 at 16:05:45, Jerome Fine wrote: > If my memory serves me correctly (which is not very > frequent these days), I seem to remember receiving > a BA23 box with an M8189 in the top slot and the > RLV11 in to next 2 slots. The memory for the system > (normal PDP-11 Qbus memory) was in slot 4. > As far as I know, there might be a delay factor > associated with placing the memory below the RLV11, > but it still functions correctly. It's entirely possible that it would work correctly. Covention has always been that PMI memory immediately precedes the CPU, and NON-PMI memory immediately follows the CPU. I've always just assumed that there was a reason for it, and never really questioned it, since I had no need to. I'm surprised anyone would bother with an RLV11 in a BA23, since the RLV12 was readily available at the time, and supports 22-bit. Much less space, power, and heat. Although sometimes you just have to work with what is at-hand. ;-) T ________________________________________________________________________ More new features than ever. Check out the new AIM(R) Mail ! - http://webmail.aim.com

16 years, 4 months

System 36 SSP on 5.25" media?!

by ceby2＠csc.com

Periodically I thow this request out to see if there are new cctalkers watching. I have a long term goal of rebuilding both my 5363 and 5364 systems. But I've never managed to source a copy of the OS media. I've long had a copy of the media for 5360/5362, but that's not binary compatible and is distributed on 8" media anyway. So one more time... does anyone have System 36 SSP on 5.25" media I can beg, borrow, or buy? Can anyone help? Thanks, Colin Eby CSC Computer Sciences Limited Registered Office: Royal Pavilion, Wellesley Road, Aldershot, Hampshire, GU11 1PZ, UK Registered in England No: 0963578 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- This is a PRIVATE message. If you are not the intended recipient, please delete without copying and kindly advise us by e-mail of the mistake in delivery. NOTE: Regardless of content, this e-mail shall not operate to bind CSC to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of e-mail for such purpose. ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

16 years, 4 months

RLV12 placement in H9278-A question

by tiggerlasv＠aim.com

On 21-Feb-08, at 17:28:32, John A. Dundas III wrote: > This is being used temporarily in a system with an M8189 (KDF11) and > M7551 (MSV11-Q, 4MB memory), so only one CD slot is currently > available. Just wondered whether I needed to reserve that slot or > not. Looks like not, so I'll use an appropriate Q/Q slot. If your're tight on open slots, the 3rd slot is a good spot for a quad board, since the CD slot is otherwise unuseable in your current configuration. T ________________________________________________________________________ More new features than ever. Check out the new AIM(R) Mail ! - http://webmail.aim.com

16 years, 4 months

Hoeneywell-Bull DPS9000

by cclist＠sydex.com

I was going through some old code and discovered that I wrote a DOS driver to handle Honeywell-Bull DPS9000 GCOS floppies. I don't recall the exact circumstances, only that we equipped the customer with a Compaticard and a modified dual drive (5.25" and 3.5") box, although one isn't required for operation. Does anyone collect these old systems? Would you be interested in a copy of the code? Cheers, Chuck

16 years, 4 months

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test-drb February 2008