Gerhard 3272 - and 3271, 3274 and 3174 - was a control unit for 3270 displays and printers, the original pre-SNA channel-attached control unit, emulated today by the OSA-ICC.
You are correct that 3279 was the first colour display with 3277 and 3278 being green/monochrome predecessors - and with 3275, 3276 and 8775 being green/monochrome combined control unit and display predecessors. After that it gets complicated although the 3290 "stands out"[1]. - [1] I once insisted on 3290s as the displays on which to present a network management scenario at an exhibition, not actually because the characters were any larger than they would have been on a 3278, for example, but because they were just that much more legible when spread out over the larger display surface and a standing audience of about 10 exhibition punters could read the displays with comfort. An Italian journalist came by during a break period and just assumed we must be pushing these impressive devices rather than that they were aids for the demonstration. - Chris Mason On Thu, 26 May 2011 18:08:27 -0400, Gerhard Postpischil <gerh...@valley.net> wrote: >On 5/26/2011 3:40 PM, Mike Schwab wrote: >> http://en.wikipedia.org/wiki/IBM_3270 >> 3277 Green on black >> 3278 8 colors on black. >> 3290 4 24*80 screens orange on black. > >You copied that wrong. 3272 through 3278 were all monochrome >(green from IBM, and at least one competitor had an easy to work >with cyan); the first IBM color tube was the 3279, but it only >had 7 colors and black. The 3279 also had triple-plane graphics, >which allowed for some nifty user created characters. > >The 3290 could be configured as 4 24*80 screens, but also other >sizes and combinations (e.g., one popular combination was 2 >24*80 on top, 27*132 on bottom; once TSO supported it, 52*160 >was also used). > >Gerhard Postpischil >Bradford, VT ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
