3270 controller simulation

Al Kossow aek at bitsavers.org
Mon Nov 18 12:02:45 CST 2019

On 11/18/19 9:52 AM, Grant Taylor via cctalk wrote:

> Do you know what protocol name would be used to describe the communications between the mainframe OS and what it thinks
> are locally attached terminals?


you'll find lots of information about this side of things going back to the dark ages


getting away from applications programmers dealing with data streams is one of the reasons systems
like CICS were created

the protocol between the 3274/3174 and the terminals is different and varies between the different models of attached
terminal. it isn't even EBCDIC

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