Not if by "straight 3270 data stream" you mean what is documented in 3270 Information Display System Data Stream Programmer's Reference; that's not what flows over the coax. The board and oec translate between the coax data stream and the documented 3270 data stream. In addition to that, oec uses TN3270 as a transport mechanism for the 3270 data stream, with no translation.
I am, however, confused by :oec only works with CUT terminals", since the readme refers to both CUT and DFT. Perhaps what they told him is that oec doesn't support DSL. -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf of Joe Monk [joemon...@gmail.com] Sent: Monday, May 11, 2020 9:43 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: 3270 terminals: CUT vs. DFT I understand that. The interface board he is using translates TN3270 to straight 3270 data stream. So, since he wants to connect a 3290, he will need to download microcode before he can use the 3290. Thus, he needs to emulate a 3x74 controller with am ethernet connection (TN3270E) to VTAM/NCP... "Prerequisites: The IBM 3290 Information Panel attaches to the IBM 3274 Control Unit Models 1A, 1C, 1D, 31A, 31C, 31D, 41A, 41C, 41D, 51C, and 61C. The 3290 requires the customizing of the 3274 and a microcode load from the 3274 to be operational. A 3178, 3278, or 3279 display station with keyboard attached to port 0 of the control unit is required for customizing and maintenance of the 3274 Control Unit." Joe On Mon, May 11, 2020 at 8:34 PM Seymour J Metz <sme...@gmu.edu> wrote: > TN3270 encapsulates the 3270 data stream; there's no translation involved. > Implementing CUT or DFT is a different translation, and that is apparently > what oec does. Think of TN3270 as an alternative to channel, BSC or SDLC > links. > > > -- > Shmuel (Seymour J.) Metz > http://mason.gmu.edu/~smetz3 > > ________________________________________ > From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf > of Joe Monk [joemon...@gmail.com] > Sent: Monday, May 11, 2020 8:00 PM > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: Re: 3270 terminals: CUT vs. DFT > > Alex, > > What you have in that interface is a simple protocol translator ... > translating bi-directional TN3270 to 3270 Data Stream. That is great to > drive a 3270 dumb terminal. > > The first thing you need is to emulate a real control unit ... like a 3174 > or 3274. > > If you read the product letter: > https://www-01.ibm.com/common/ssi/rep_ca/3/897/ENUS183-033/index.html > > "The 3290 utilizes microcode loaded from the IBM 3274 Control Unit to > provide screen-management facilities > for improved end-user ease of use." > > So, you need some microcode for the 3290, then you need to be able to load > it to the 3290 on request from your OEC. Once you have that working, then > the rest will kinda fall into place with the DFT functionality on the OEC. > > Joe > > On Mon, May 11, 2020 at 1:18 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://secure-web.cisco.com/1vlIhY4V_aywcFTX__Fd5NXI51bckoNxnTNmzFp7TRnF7zbt7LCyVgQAu0YtD9ThNbrXZD4M1u0z4F_HhRc1e64BzrWjeklln7utA_76676bH-95U_RR5WkSSsjEEgrkV-dpiBRlbWxUi5d8ImqPzl7yux5JR115uPjtKM8FOz8ehIM4yczPRfScNfJBlRJKwkvvpBiFDDRQC5095JCfykr5oMAIdEpBeSjK03kuu0yhBpn-AtY6wUP_AmVl0981y_STeqmCAit7yEodnyM0G1JJiRwwLkbmThjkSnIpxbqQ6PJ8dW3ZVdZMnEpI9F1nFa2DZdSYxKOtNJcTMRV4ZEkNW8Xy3WseFowE6R79waKmOkp20sKZLhSZgpdw1AWCsAo9Txo2fiualiWOtCeAfQltVlb0xACuHIAIlQNZ5r2k8EH_KB5WE1_6yeC_7jU_O/https%3A%2F%2Fgithub.com%2Flowobservable%2Foec > > [2] > https://secure-web.cisco.com/1SQi3q2VhlTlrGizNplSRl5IpZJ2HBxnVwKQCVGkjWIsR2Zy9HkSo7rYO6DxRUKZeOpWgKkcYmPB4fuQ5mvYA7FDut1UqtdrF5fP02rd1C-zrCvZcgeJ5J5Lr87ReANDxhONbJ2O7p7PECtYg6FEnwFPYnk4I1NCp9CO0dhyVpHuxvQZx5yY2_4Obt_VxOILArXm2WyKBvwf2zX9JQ4zIv-_8bkCeKCaCkrHA1eLmxNDNtj-fMGwQcNWQ3_o4G08XaaeETQBBJ5_GrQsgtdQC8tZGdtvpU8gB45GeZA42WKhOvW0NvRV4-xQdrFuJiGyEQekhzcYONPP4970JJd383hUgdw42Gjjs3aTRuiN8KjUrUCARbMW5h3G-LZKJNvjvx9aXjjjpsFrZ-QqUuZIeTHJ3HwjTwGR9w1EcYEFkmuwSG0vUv-BSVfThjkQuYjhy/https%3A%2F%2Fahuemer.xx.vu%2Fvolatile%2F2020-05-11-P6C1Wc3u1wU%2F > > [3] > > > https://secure-web.cisco.com/1fsc9ZGe-po7XIhyE9ksIFQcgWIKnOknKsKZUHHfydKhIn98m_BKzoBGEiAImwK7ie7-IQx9WXgz4ELD5U8XoERyEW3XD2G1Huopvr5BHRg1DTDwc4ROVbVA0LSX-1aWMHi0u3g2jWQNSAWTwHJC-LIbv3NvSJeHkYphLTREVblzsFxESsXLJEc4hNE0-AAaTsveWg9DZwCgub7uuOKslsOapD_tLCXH0S4zRtItsTHCoiyTAS2AClyNh94yVq59fARyn2-LoaRwpfnVYOUFUsEQcHJYlogbeGDkOK8rz_dlYuawfoG9SZMPRlTethM1oL1YTIa76wJzLlhz08z16HD_9jHrhzWy5H71WUKyjZ9Bls8jnWbAOm6w3NgyuMKnfDBqnktQ509vVkHxvnMS6KPoUjynGD-cqcoXNdoLmmcryhH3esOIV05h-4fAd4QCD/https%3A%2F%2Fgithub.com%2Flowobservable%2Fcoax%2Fblob%2Fprotocol%2Fprotocol%2Fprotocol.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 > ---------------------------------------------------------------------- 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
