Editing IBM 3270 (section)

====Non-IBM Controllers====
=====GTE=====
The GTE IS/7800 Video Display Systems used one of two nominally IBM compatible controllers:

* 7801 (remote, 3271 equivalent)
* 7802 (local, 3277 equivalent)

=====Harris=====
The Harris 8000 Series Terminal Systems used one of four controllers:

* 8171 (remote, 3271 equivalent)
* 8172 (local, 3277 equivalent)
* 8181 (remote, 3271 equivalent)
* 8182 (local, 3277 equivalent)
* 9116
* 9210
* 9220

=====Home grown=====
An alternative implementation of an establishment controller exists in form of OEC (Open Establishment Controller).<ref>{{Cite web|url=https://ajk.me/building-an-ibm-3270-terminal-controller|title = Building an IBM 3270 terminal controller| date=May 23, 2020 }}</ref><ref>{{Cite web|url=https://github.com/lowobservable/oec|title=Oec|website=[[GitHub]] |date=October 4, 2021}}</ref><ref>{{Cite web|url=https://github.com/lowobservable/coax|title = Coax| website=[[GitHub]] |date = October 16, 2021}}</ref><ref>{{Cite web|url=https://github.com/lowobservable/pytn3270|title = Pytn3270| website=[[GitHub]] |date = October 4, 2021}}</ref> It's a combination of an [[Arduino]] [[Arduino#Shields|shield]] with a [[BNC connector|BNC]] connector and a [[Python (programming language)|Python]] program that runs on a [[POSIX]] system. OEC allows to connect a 3270 display to IBM mainframes via TN3270 or to other systems via [[VT100]]. Currently only CUT but not DFT displays are supported.

=====Memorex=====
Memorex had two controllers for its 3277-compatible 1377; the 1371 for remote connection and the 1372 for local connection.<ref>{{cite web
 |    title = 1371/1372 REMOTE/LOCAL CONTROLLER BUSINESS PLAN
 |       id = MRX 19780928
 |     date = September 28, 1978
 |      url = http://mrxhist.org/docs/MRX%2019780928%201371%20Business%20Plan.pdf
 | publisher = COMMUNICATIONS GROUP MEMOREX CORPORATION
|website=Memorex History and Memorabilia
 }}
</ref>

Later Memorex offered a series of controllers compatible with the IBM 3274 and 3174

* 2074
* 2076
* 2174
* 2274