On 3/12/18, 2:19 PM, "IBM Mainframe Discussion List on behalf of Seymour J Metz" <IBM-MAIN@LISTSERV.UA.EDU on behalf of sme...@gmu.edu> wrote: > Not all session managers restrict you to 24x80; in fact, I have never had the > misfortune to use one that did. Are you sure that it was a product limitation > and not a restriction decreed by your management?
In some ways it was a feature of the way VTAM worked, or at least a dramatic change in assumptions that came with programmable devices over classic dumb terminals; as I understand it, since you had two LU sessions in play (terminal-> session manager, session manager-> application), the second session was restricted to the lowest common denominator (24x80) if you wanted to support arbitrary incoming screen sizes because there was no way to pass actual terminal geometry to the second session without getting the information some other way. The telnet server skipped that limitation entirely and was smart enough to query the terminal and be able to pass the actual terminal geometry to the application. Most of the session managers never really figured that one out, with a few notable exceptions. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
