RE: MIDRANGE-L Digest V4 #851

The problem is, most of us using the AS/400 worked with cards at one
time or another. And that is the problem. 
Bob Cozzi


Date: Mon, 30 Jul 2001 20:50:26 -0400
From: ken shields <kjs@idirect.com>
Subject: Re: AS/400

Neil
        You and I are probably the only people that actually worked that
equipment.
        I remember placing rpg code, inside a compiler deck of cards.

Neil Palmer wrote:
> 
> Rob,
> 
> That was a common trick with card machines.  I believe the 2560 card 
> readers (S/360 Mod 20 I worked on back in early 70's - and possible 
> even the 5424 card readers on the S/3) had a hidden switch under the 
> covers that doubled their speed (and greatly increased the cost and 
> monthly maintenance charge).  Once you "found" this switch you could 
> flip it and run the thing at the higher speed.  If you needed 
> maintenance, or if the CE was due for Preventive Maintenance (remember

> that !  ;-)  ) you would flip the switch back.  When he left, you'd 
> change it back again.
> 
> Someone told me an early Burroughs computer  (1800 ???) had a switch 
> you could flip to make it run faster too.
> 
> ...Neil

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