× The internal search function is temporarily non-functional. The current search engine is no longer viable and we are researching alternatives.
As a stop gap measure, we are using Google's custom search engine service.
If you know of an easy to use, open source, search engine ... please contact support@midrange.com.



Booth,

Is there an "enhanced 5250 data stream"?  The scroll bar, radio buttons,
  check boxes, and push buttons all became available with the advent of
the enhanced controller, so far as I know?


That is correct; they are part of the enhanced data stream though not all of
them became available in the first version of it IIRC.  When using twinax
you must be connected to a so-called enhanced WS controller which became
available (but not required) somewhere around 1990 or so as I recall, and
became the default WS controller not too long after.  So probably nearly all
400's still in use would have the enhanced WS controller.  Different
terminal types could handle various combinations of the features made
possible by the enhanced data stream commands.

When using other connectivity methods such as TCP/IP, the emulation software
may or may not support all the capabilities of the enhanced data streams.
It would not be surprising to have various features unsupported, especially
those which don't even have a DDS equivalent and can only be done by things
like using DSM or UDDS, etc.  For example, while the original 5250 data
stream requires display positions for attribute bytes, the enhanced data
stream can provide "extended attributes" to set the color and other
attributes of any given screen position indepedent of adjacent positions.
But you can't do that via DDS.

Doug

As an Amazon Associate we earn from qualifying purchases.

This thread ...

Replies:

Follow On AppleNews
Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].

Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.