It was introduced in OS/390 1.3.  Performance was not optimal.

Bob

Don Imbriale wrote:
Sorry to answer my own post, but I have now found an even earlier reference in OS/390 2.4.

On Mon, 6 Nov 2006 16:56:36 -0600, Don Imbriale <[EMAIL PROTECTED]> wrote:


OS/390 2.7, approx. March 1999

Don Imbriale

On Mon, 6 Nov 2006 15:38:18 -0700, Paul Gilmartin <[EMAIL PROTECTED]>
wrote:


Just looking at SYS1.SAMPLIB(GIMASAMP), I see:

  ********************************* Top of Data ***********
  *
  * Licensed Materials - Property of IBM
  * 5694-A01 5655-G44
  * (C) Copyright IBM Corp. 1981, 1981
  *
  BALAPI   CSECT

I had no idea GIMAPI was 25 years old; I thought it was announced
more recently.  Is it as old as BAL, or am I drawing an undue
inference from the name of a symbol.

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