---------------------<snip>--------------------

I am a new comer in the mainframe field. I am learning this technology from an institute in Singapore.

I have searched the net and not able to find which of the Jes version was introduced first JES2 or JES3. I know Jes2 was evolved after HASP and Jes3 was after ASP.

Could anyone please let me know the specific dates or year in which these two job entry subsystems were introduced.

Waiting for your response.
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IIRC, HASP appeared about the same time as MFT, around 1966, and ASP appeared about a year later. But my memory for that period is awful fuzzy.

Thanks.

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