Hi > Let me see what I can dig up from the old dusty storage area
Did you find anything? -Alex On Mon, May 11, 2020 at 02:44:21PM -0400, Ken Bloom wrote: > Hi Alex > > I’m familiar with SNA DFT and in a previous life released several products > that utilized it. I’ll look back at some old docs I have to see if there is > anything worth while sending you. As I said we did 2 products. One was > called the “Port-Xpander” and basically looked like a DFT Terminal on one > side (coax attached to a 31 or 3274) and had five coax outputs that connected > to 3270 cut terminals. It was used to expand the port capacity of a 3174 > from 32 ports up to 160 ports. The second product was called “SyncLink” and > it coax attached to a 3174 mux port and looked like 8 DFT devices on the > input side. The output side was multiple SDLC lines that connected to down > stream PU2 devices. It was in effect a poor mans 3745. Did not require NCP > but to remote PU2 devices it looked like a 3745. > > Let me see what I can dig up from the old dusty storage area > > Ken > > Kenneth A. Bloom > CEO > Avenir Technologies Inc > /d/b/a Visara International > 203-984-2235 > bl...@visara.com > www.visara.com > > > > On May 11, 2020, at 2:17 PM, Alexander Huemer <alexander.hue...@xx.vu> > > wrote: > > > > Hi > > > > I have a 3290 terminal that I'd like to put to some use. See email > > thread 'Talking to 3270 terminals?' that I started Jan 14. > > Somebody then pointed me to oec[1], which is an awesome project. I have > > built the hardware interface that is required to talk to a 3270 terminal > > on the hardware level. A picture of the interface and a video of the > > terminal can be found at [2]. > > > > Now, the friendly person who created oec says that the 3290 is a so > > called DFT (Distributed Function Terminal), in contrast to a CUT > > (Control Unit Terminal). Most 3270 terminals seem to be of the (simpler) > > CUT variant. oec only works with CUT terminals. Extending the > > functionality to enable it to work with DFT terminals isn't trivial. > > > > Does anybody on the list here know of additional documentation besides > > what's mentioned at [3] that could be helpful to implement DFT support? > > > > What would also be very helpful is a protocol trace of any kind of the > > communication between a 3174 and a DFT terminal. > > > > -Alex > > > > [1] https://github.com/lowobservable/oec > > [2] https://ahuemer.xx.vu/volatile/2020-05-11-P6C1Wc3u1wU/ > > [3] https://github.com/lowobservable/coax/blob/protocol/protocol/protocol.md > > > > ---------------------------------------------------------------------- > > For IBM-MAIN subscribe / signoff / archive access instructions, > > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
