This video is about the IBM 3151 ASCII terminal from 1987 and how it can be connected to an IBM mainframe and used like a 3270 terminal.
The source code for the interface program is available on Github here:
https://github.com/norbertkehrer/mainframe3151
More information can be found on my website here:
https://norbertkehrer.github.io
YOUTUBE CHAPTERS
00:00 How I bought my IBM 3151 at the flea market
02:00 How the terminal looks from the outside
06:47 Analyzing the text burned into the terminal screen by the 3745 controller
10:23 Checking the manual for the IBM 3151 and finding references to block mode
12:30 What is block mode for terminals?
19:58 Checking the setup menu to find out, if the 3151 terminal supports block mode
23:00 Cabling that can be used to connect the 3151 terminal to a modern PC
23:43 Testing the connection with the PC with the PuTTY terminal program
27:49 Comparing the block mode commands of the IBM 3151 terminal with the 3270 commands of IBM mainframes
35:26 How it is to work with an IBM mainframe
39:56 How an IBM mainframe talks to its 3270 terminals via telnet
40:51 How to write an interface program to have the mainframe talk to 3151 terminals
42:55 Looking at the C source code of the mainframe-to-3151 interface program
46:06 Starting the interface program
47:40 Working on a mainframe under VM/370 with an IBM 3151 terminal
53:01 Working on a mainframe under MVS with an IBM 3151 terminal
1:00:50 Thank you