On Thu, 17 Jun 2004, William Donzelli wrote:
> Here is a bit of good mainframe junk recently obtained:
>
> http://users.bestweb.net/~toober/images/3803.front.jpg
> http://users.bestweb.net/~toober/images/3803.open.jpg
> http://users.bestweb.net/~toober/images/3420.front.jpg
> http://users.bestweb.net/~toober/images/3420.open.jpg
>
> Basically, the big blue box is an IBM 3803 Tape Control Unit - the brain
> that connects 3420 Tape Units (one of three is pictured) to an S/370 thru
> a Bus & Tag channel. The 3803 and two of the 3420s are from 1972, and the
> third 3420 may be from 1980. The 3803 apparently works - it was in service
> quite recently - but all three of the 3420s have problems. Luckily, I
> obtained a full set of MLMs (service binders) for the units, plus some Bus
> & Tag cables.
>
> Note the 3803 has a full control panel. It better, as it has more
> electronics in it than most minis of the era.
I've got two 3420s and a 3803. I'm not sure what year they were
manufactured (how can I tell?), or if they work.
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
[ Old computing resources for business || Buy/Sell/Trade Vintage Computers ]
[ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]
Received on Thu Jun 17 2004 - 23:39:58 BST
