Re: Pertec Tape Drive Interface Musings

2015-08-04 Thread Chuck Guzis
On 08/03/2015 09:54 PM, Eric Smith wrote: On Wed, Jun 10, 2015 at 9:40 AM, Dennis Boone d...@msu.edu wrote: The main limitation seems to be that it's hard to get the (broken) data from a block that had a read error when using SCSI hardware. There's probably a way around this if one digs into

RE: Saved DEC kit

2015-08-04 Thread tony duell
[25kg] Hmm…. 55 pints? Not over here -tony

Was there 3rd party DEC PRO CTI boards?

2015-08-04 Thread Pontus Pihlgren
Hi Out of curiousity, since I now have a DEC PRO380. Was there any third party manufacturer of CTI expansion boards? Regards, Pontus.

Looking for AMI S4008 or MOSTEK MK4008

2015-08-04 Thread Bill Sudbrink
Subject pretty much says it all, except that I need the ceramic package with the metal lid. Thanks, Bill S.

Re: Pertec Tape Drive Interface Musings

2015-08-04 Thread Chuck Guzis
On 08/04/2015 06:17 PM, jwsmobile wrote: I was on the SCSI committee when the tape commands were proposed. The original that was proposed was to only have a commands which would be on disk controllers (who were the main players) to perform backups of disk units and restores. Luckily that

Re: Looking for AMI S4008 or MOSTEK MK4008

2015-08-04 Thread Brent Hilpert
On 2015-Aug-04, at 6:32 PM, Bill Sudbrink wrote: Subject pretty much says it all, except that I need the ceramic package with the metal lid. Not that it's a help, but I have a Wang calculator that uses an array of MK4008's. Ceramic lidded but the gold-plated pins rotted on one or two of them

Re: Pertec Tape Drive Interface Musings

2015-08-04 Thread Jon Elson
On 08/03/2015 10:48 PM, Jon Elson wrote: OK, I verified it was indeed made by Pertec. The title block of the drawings doesn't have anything real obvious, but there is a bunch of legal boilerplate advising the restrictions on use of the drawings, and the last words are prior written

Re: Pertec Tape Drive Interface Musings

2015-08-04 Thread TeoZ
AIT was 8mm using SONY drives and tapes (industrial use for 8mm camcorder media). -Original Message- From: Chuck Guzis Sent: Tuesday, August 04, 2015 10:20 PM To: jwsm...@jwsss.com ; gene...@classiccmp.org ; discuss...@classiccmp.org:On-Topic and Off-Topic Posts Subject: Re:

Re: Looking for AMI S4008 or MOSTEK MK4008

2015-08-04 Thread Nigel Williams
On Wed, Aug 5, 2015 at 11:32 AM, Bill Sudbrink wh.sudbr...@verizon.net wrote: Subject pretty much says it all, except that I need the ceramic package with the metal lid. Like this? http://www.ebay.com/itm/MK4008P-2-MOSTEK-16-Pin-GOLD-PURPLE-DIP-Vintage-MK4008-/390115835505

Re: Saved DEC kit

2015-08-04 Thread Jules Richardson
On 08/01/2015 05:10 AM, Adrian Graham wrote: I'm struggling to find anything that weighs exactly 25kg :) 25 things that weigh 1kg, obviously. :-)

Re: Saved DEC kit

2015-08-04 Thread Tapley, Mark
Hmm…. 55 pints? On Aug 4, 2015, at 4:58 PM, Jules Richardson jules.richardso...@gmail.com wrote: On 08/01/2015 05:10 AM, Adrian Graham wrote: I'm struggling to find anything that weighs exactly 25kg :) 25 things that weigh 1kg, obviously. :-)

Re: Saved DEC kit

2015-08-04 Thread Fred Cisin
On 08/01/2015 05:10 AM, Adrian Graham wrote: I'm struggling to find anything that weighs exactly 25kg :) 6.6[043] gallons of water a 25Kg bag of dogfood 1470 3.5 floppies

Re: Unidentified chip

2015-08-04 Thread John Robertson
On 08/04/2015 1:48 PM, dwight wrote: This all assumes it is a TTL and not an ECL or even and analog chip, such as an opamp. Dwight It might be possible to identify it a bit. Using the Diode Test of your basic multi-meter you can probably figure out if

RE: Unidentified chip

2015-08-04 Thread dwight
From: j...@mercury.lcs.mit.edu snip It's a 16-pin DIP, with the following on it (in three separate lines): 1028126, D39315-A, and CS9336P. The first number looks like the numbers I've seen on a couple of other un-identified chips, made by TRW. (I hope they aren't something classified

Unidentified chip

2015-08-04 Thread Noel Chiappa
So, I took Tony's advice (about parts) to heart, and have been stocking up on all sorts of things. (Ironically, I now have a _far_ better supply of parts that I had access to, back in the day, at LCS at MIT! But that's a rant for another day.) As part of that, I've bought up a number of IC

Re: Pertec Tape Drive Interface Musings

2015-08-04 Thread Chuck Guzis
On 08/04/2015 09:54 AM, Chuck Guzis wrote: BTW, what do you use to read UNIX v7 tar files? Linux/BSD modern tar seem not to like the old archive format--they use the posix version. Scratch that--it helps if what you're working with is actually a .tar file. Nevermind. It's not even 10:30AM

Re: Pertec Tape Drive Interface Musings

2015-08-04 Thread Noel Chiappa
From: Chuck Guzis BTW, what do you use to read UNIX v7 tar files? Linux/BSD modern tar seem not to like the old archive format I have a very slightly hacked version of the V7 tar, which runs under Windows (under Cygwin). It read all the older TAR files which the newer TARs barfed

Re: Unidentified chip

2015-08-04 Thread Chuck Guzis
On 08/04/2015 11:40 AM, John Robertson wrote: You could always get one of those inexpensive TTL device identifiers to see if the house number crosses over: http://www.ebay.com/itm/281682288251 My Xeltek programmer has that function--and it works for some common TTL ICs, but gets a lot less

Re: Saved DEC kit

2015-08-04 Thread Jarratt RMA
Hello Adrian, Any news on whether I might be able to get my hands on the 2000 and 4000 VLC? Regards Rob On 1 August 2015 at 11:59, Adrian Graham wit...@binarydinosaurs.co.uk wrote: No probs Rob, I'll give it a couple of days and dig through my old messages from Dec/Jan this year. The

RE: Unidentified chip

2015-08-04 Thread dwight
This all assumes it is a TTL and not an ECL or even and analog chip, such as an opamp. Dwight

Re: Saved DEC kit

2015-08-04 Thread Toby Thain
On 2015-08-04 6:32 PM, Fred Cisin wrote: On 08/01/2015 05:10 AM, Adrian Graham wrote: I'm struggling to find anything that weighs exactly 25kg :) 6.6[043] gallons of water a 25Kg bag of dogfood 1470 3.5 floppies About a kajillion emails

Re: Pertec Tape Drive Interface Musings

2015-08-04 Thread jwsmobile
On 8/3/2015 9:54 PM, Eric Smith wrote: On Wed, Jun 10, 2015 at 9:40 AM, Dennis Boone d...@msu.edu wrote: The main limitation seems to be that it's hard to get the (broken) data from a block that had a read error when using SCSI hardware. There's probably a way around this if one digs into