Job Entry Subsystem 1 (JES1)

Job Entry Subsystem 1 was released by IBM to provide for VS1 the basic functions that users of VS1's predecessor, MFT, had when using HASP.
Reaction? "Users hated it.".[1] Why? HASP and ASP users often had made local modifications (edits),[2] and wanted to retain their investment.[3]

References

  1. ↑ https://share.confex.com/share%2F121%2Fwebprogram%2FHandout%2FSession14285%2FJES2%2520Bootcamp%2520Part%25201.pdf
  2. ↑ The article notes that "one customer has 35K lines of ... code." (p.9)
  3. ↑ above IBM document, page 5. Also, there was a HASP modification "clearinghouse" at University of Chicago, from which other HASP users "downloaded" (actually printed via RJE and rekeyed; this was before the term download was in use).
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