On Tue, 8 Jul 2008 08:31:01 -0700, Edward Jaffe <[EMAIL PROTECTED]> wrote:
>... >It means 3278 with a TEXT keyboard. These pre-3270 emulation subtleties, >nuances, and idiosyncrasies have mostly faded into history by now. I >know how it differs from the APL keyboard. But, I'm not sure how it >differs from other 3278-related types. ... Back inthe late '80s I worked in a shop thet hade TEXT keyboards. They had an alternate character set and a Text/noText switch. When in TEXT mode the terminal inserted a Graphic Escape (x'08') in front of "normal" byte generated by that particular key. I just looked in the 3270 Data Stream Programmers manual to confirm this memory and was surprised to see that this Graphic Escape "character" was no character at all; it was a 3270 order. By defining it allowed the 3270 character set to be doubled without changing the characteristics of the 3270 datastream (except doubling its length). Code points x'40'-x'FE' were all valid "alternate character set" characters. I vaguely remember there was a <some color> card showing the TEXT alternate character set. Pat O'Keefe ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
