3 ms·
Not only AS/400 itself is pretty alien, even the terminals are unusual from modern viewpoint; they were not just dumb character grids or text lines, but had som
by zokier 4y ago
Not only AS/400 itself is pretty alien, even the terminals are unusual from modern viewpoint; they were not just dumb character grids or text lines, but had some logic for handling forms etc on the terminal side
- PaulHoule 4y agoAS/400 had a terminal that was similar to but not compatible with the 3270 used on the 360 mainframes. Applications like either one are a lot like web applications from 1999, that is, the mainframe draws a screen with a form in it, the user fills out the form, hits a button, and it get submitted. The programming model for transaction managers like CICS on the 360 was similar in some ways to back end web frameworks, they even had clever code generation systems (see “X macros”) for writing serialization/deserialization in assembly language.