Mainframes and other stuff
Recycle center in NC is willing to save out "stuff" for people.
No, no one can go in the back and scrounge.
No, he does not want a lot of emails from people.
Yes, he gets big blue and orange and beige 6 foot tall OLD mainframes in all
the time. They squash them at the moment.
Yes, he will package small orders, and will properly palletize larger
Local pick up will be available after the new year.
So, if u can send me a picture with description and some part numbers, along
with what you want to pay, I will consolidate things and make arrangements.
Please don't ask for specific boards from DEC; they don't want to go into
that much detail.
QBUS will mean nothing to him.
Big orange cabinet that says xxxxx is much more likely to get saved.
They are moving to new warehouse 1st of the month, so all this will start
happening after the 1st of the year.
1613 Water Street
Kerrville, TX 78028
sales at elecplus.com
AOL IM elcpls
I have a VAX730 with both TU58 drives destroyed (capstan melted, need
I also have a bunch of cassettes, but unfortunately all seem to have
problems with the bend and/or bad spots on the tape.
Possibly I would try to replace the broken bands (if I find a source)
and/or replace the magnetic tape when damaged (I was thinking to try
with audio cassette tape, don' t know if metal oxide high density tape
could be good for it).
Anybody has some information about the coercivity of original DEC TU58 tape?
One problem indeed is the need of reformatting the tape, but: if I can
emulate the TU58 drive using a serial, would it be possible to send
raw commands to the drive using the serial and a PC?
PS-If possible, some good-condition cassette would be very useful to
me too. I'm located in Italy.
An interesting 3 hours on PBS last night:
- 'Steve Jobs - One Last Thing': No description necessary.
- 'Long Distance Warrior': McGowan/MCI's David & Goliath battle with AT&T
and disastrous merger with Worldcom.
- 'Digital Man/Digital World': Ken Olsen/DEC's growth and ultimate decline.
(No doubt everyone here except myself had already seen this one ;-)
Interesting comparison of the different styles and personalities of three
men who profoundly influenced the tech world of today and their companies.
Thoroughly enjoyed it.
A friend of mine just returned a modem he got from me decades ago, a
Ventel MD212-plus. It's an early-1980s non-AT-command-set
autodialling modem. The settings are adjusted via a pair of 10-pin
DIP switches accessible from the back. I've checked the web and
bitsavers. So far, all I've found is some old Usenet articles and a
couple of pictures, but no manual or jumper guide.
One "feature" is that it lacks a modular jack to plug into the phone
system. Fortunately, my friend kept the proprietary DA15 cable. I've
never seen that choice of connectors on any other modem.
Does anyone have any Ventel docs?
Many of us maintain large collections of bits that we'd like to preserve over a long time, and distribute, replicate, and migrate via unreliable storage media and networks. As disk sizes (and archive sizes) have increased, the probability of corruption undetected or uncorrected by the mechanisms normally built into disk drives, network protocols, and filesystems has increased to a level that warrants great concern.
I would be interested to know if there exists an archive format that has the following desirable properties:
1) It is well-documented, and relatively simple, to facilitate its implementation on many platforms present and future.
2) It supports some degree of incremental updating, but need not be particularly efficient about it. An explicit compaction operation is preferable to an overly complex format. It is adequate to use append-only strategies appropriate for write-once media.
3) Insertion and extraction of files, copying of the archives, and other archive-manipulation utilities support end-to-end verification that identical bits have been stably recorded to the media, bypassing or defeating platform-level or hardware-level caching mechanisms. Where this is not possible, the limits must be carefully delineated, with some basis for determining the properties of the platform and certifying reliability
properties where possible.
4) The format should provide for superior error detection capability, designed to avoid common failure modes with mechanisms typically used in hardware. For example, use a document-level cryptographic checksum rather than a block-level CRC.
5) The format should include a high degree of internal redundancy and recoverability, say, along the lines of a virtual RAID-array.
Just as biological organisms constantly correct DNA transcription errors,
the idea is to have a format that is robust across long-term exposure to
imperfect copying and transmission channels.
Does anything like this exist?
I'm looking for the images of ROMs installed on the IOC (I/O controller)
board of Intel MDS-2 development systems. In particular I'm looking for
the content of the character generator ROM (A19-2708) and of firmware
ROMs (A50 to A53-4x2716). So far I had no success in googling them.
My goal would be to contribute a good emulation of MDS systems to MESS,
especially for what regards the look of the video terminal. Well, this
is the plan, when "real-life" is not inteferring too much...
Thanks a lot.
I?ve been struggling getting a 64k Dynamic RAM card back up and working in my IMSAI 8080. In fact I?m giving up on the DRAM card in this system and have decided to start looking for a SRAM card that can get the IMSAI up to 56k.
In terms if SRAM cards, I presently have:
2 x Problem solver RAM16 cards - both seem to be working.
2 x 8K RAM cards - both seem to be working.
Less cards generating heat, and putting stress on the old power supply is obviously best, so I?d be looking for either:
- 1 x 16k SRAM card (for a total of 4 RAM cards (3 x 16k + 1 x 8k) in my system). A PSS RAM16 would be preferred for sake of consistency, but obviously not crucial.
- 1 x 32k SRAM card (for a total of 3 RAM cards (1 x 32k, 1 x 16k + 1 x 8k) in my system)
- 1 x 64k SRAM card that can have the last 8k bank turned off
I would love to hear from anyone with one of the above cards who would be willing to pass it on.
Much thanks for your time.
----- Original Message -----
> Date: Sun, 22 May 2011 22:56:32 -0500
> From: Daniel Seagraves <dseagrav at lunar-tokyo.net>
> Subject: Re: Scraping DEC Equipment
> To: "General Discussion: On-Topic and Off-Topic Posts"
> <cctalk at classiccmp.org>
> Message-ID: <C7A98127-DFF4-41B1-A6AF-5DFCA234D286 at lunar-tokyo.net>
> Content-Type: text/plain; charset=us-ascii
> I need a tractor feed assembly for a LA100, are the ones on the 120
Apparently not, but I might have one for an LA100.
I would like to get a Tek 4404 computer going but lack any service
manuals. The system turns on but has no curser on the screen. Has
good power from the Power supply and heater is on in the CRT.
Has a row of LEDs on the mother board. Does anyone know how
to read these.
- Thanks, Jerry
On 7 May 2010, at 08:25, cctalk-request at classiccmp.org wrote:
> Message: 2
> Date: Thu, 06 May 2010 16:06:37 -0700
> From: Al Kossow <aek at bitsavers.org>
> Subject: Re: Servant .953
> To: cctalk at classiccmp.org
> Message-ID: <4BE34B7D.6060902 at bitsavers.org>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> On 5/6/10 2:23 PM, Fred Cisin wrote:
>>> Al Kossow wrote:
>>>> I am interviewing Andy Hertzfeld tomorrow, and had hoped to talk about
>>>> Servant, but I can't find a copy of it around anywhere tonight.
> A huge thank you to Nigel Williams who forwarded a working copy of .951 five
> minutes before Bill and Andy arrived. We spent an hour talking about MacPaint
> and Quickdraw (Apple has finally given CHM approval to make the sources available)
> then another hour on Alice, Dali Clock, Servant, Hypercard, and Magic Cap.
Could you please clarify, the QuickDraw source is available for what purpose? Could developers modify it any include it in heir commercial 64 bit Intel applications for instance?
Is the source Pascal, Assembler, C or something else?
Director of Microspot who has a Carbon application which compiles with over 10,000 warnings about deprecated QuickDraw calls.