Tom Marchant wrote: >Some time between 1967 and 1970.
I think the limits of 40 or 100 characters were based on a quick way (without using tapes or extra punch cards) to give shortish parameters to a program using puch cards. Or so it was told to me by an oldie years ago. About "Reference of the PARM field": Then (from bitsavers): "The exact location and format of control information passed to a processing program are described under the topic titled "Program Management" in section 1 of the publication IBM System/360 Operating System: Supervisor and Data Management Services. Today (from my bookmanager): "For details on the format of the passed information and its retrieval, see z/OS MVS Programming: Assembler Services Guide." Amazing how they worded same things then and now. >See page 85 of >http://bitsavers.trailing-edge.com/pdf/ibm/360/os/R19_Jun70/GC28-6704-0_JCL_Reference_Rel_19_Jun70.pdf Amazing those bitsavers place which I read now and then just for amusement. I have a look at that book. Same familiar monospaced fonts. Same two columns per page. Same weird spacing of words. Pages left blank intentionally. ;-) I also looked at the 'Programmers name' and am amazed that it is still 20 chars long! I tried out a job with 21 chars and got a JCL error with this nice message in upper and lower case! 'HASP110 value of programmer name is too long' Good to see those ancient manuscripts. I (re-)discovered ancient terms like SUL, BISAM and QISAM and such animals. Do you think I should fill in 'READER'S COMMENTS'? Hmmmm? ;-D Thanks, Tom for discovering this little gem! ;-) Groete / Greetings Elardus Engelbrecht SUL - type of LABEL which I never ever used at all. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
