![]() ![]() ![]() A lot of these old protocols were poorly documented or even secret. The project turned out to be a lot of detective work. ![]() Both systems had pros and cons, but - as you might expect - the screen-oriented terminals were more complex. The terminal was smart enough to let you fill in forms, edit text on the screen, and then you’d send the entire screen in one gulp. Their terminals dealt with screens full of data. However, companies like IBM and HP favored a different approach. Some companies, for example DEC, essentially used terminals as a “glass teletype.” That is, the screen was an analog of a roll of paper - more or less - and the keyboard immediately sent things to the remote system. At least, that’s what thought, so he decided to get a 3270 terminal working with Hercules.īack in the bad old days of computing, there were two main styles of terminals. However, mainframe IBM computers used an odd style of terminal and emulating it on a PC isn’t always as satisfying. Because of that, many people who want to run IBM mainframes such as the IBM 360 or 370 use the Hercules emulator to run the big iron on their PCs. We like to talk about how most of our computers today would have been mainframes a scant 40 or 50 years ago. ![]()
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