• Subject: Re: MIDRANGE-L Digest V1 #720
  • From: John Carr <74711.77@xxxxxxxxxxxxxx>
  • Date: Fri, 31 Oct 1997 20:40:27 -0500

Date:   10/31/97 10:08 AM
RE:     Re: MIDRANGE-L Digest V1 #720

>Lessee.. the IBM/1130 had 'data switches,' that did much the same thing as
>job switches.  These were a row of 16 switches that you turned on/off.
>The IBM/360/20/5 had job switches.  You had to translate the switch
>combination into Hex and set 4 dials on the front of the console.
>And, of course, the S/3, S/38, and AS/400 still have them.
>--Paul E Musselman

The 370 had them too.   I used to write RPG 1 1/2 on the 370.
The other name for job switches was ????..................

............... Thats right,   UPSI

John Carr 

>Al wrote (in part):

>Job switches aren't used very much today.  They came from the System/3 (or
>possibly before, but that's where I started).  When you submit a job, they
>can be specified specifically, or the default is to take them from the
>*JOBD.  When CL was upgraded from the System/38 to the AS/400, many
>parameters of the SBMJOB command were upgraded from *JOBD to *CURRENT, but
>the SWS parameter was not changed (as they are not used heavily).  The
>upgrading of the default parameters from *JOBD to *CURRENT simplified
>coding, but broke many programs when they were converted from S/38 mode to

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