On Fri, 1 Sep 2006 10:15:19 +0200, Chris Mason <[EMAIL PROTECTED]> wrote:
>... >I did receive conformation that the 2260 is closely related to the 2250 >which appears to have come first, 2250: 1964, 2260: 1965. I actually saw a >2250-like display being used as a system console at the IBM Santa Teresa >labs. I'm pretty sure the characters were orange - and were somewhat >distorted because - I believe I recall - they had to be rendered from short >straight lines. >... Chris, are you sure about the 2260 / 2250 relationship? I vaguely remember the 2260 looking pretty much like a 3270-ish device. I definitely remember it had a fixed character generation capability. The control unit had core plains as part of the character generation mechanism where each pixel was a core. (You could see the character shapes by looking at the core plain uin the control unit.) The 2250 was a vectored display device where characters were drawn. It had a pretty interesting high-level geometry-based programming language for drawing. I think it's main intended purpose was for CAD/CAM stuff but there was a console emulator in it. Part of that console support had a last-gasp routine for processor checks in the CPU. It would display RUN SEREP in big block letters. 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
