Vt100 terminal for sale4/5/2024 ![]() ![]() There were plenty of CP/M systems that had the terminal built in and just as many that shipped with no terminal at all and had a user-selected model at the end of a serial cable. After a certain confidence threshold is crossed, that choice is locked in and no further emulation of the other terminals occurs. So I used a simple generic page buffer, two bytes per character to cover both terminals with modal attributes as well as those with serial attributes, and the user sees only that of the terminal that is statistically most likely. If you're looking to do a really thorough job, I found that simple statistical autodetection worked pretty well for all the software I tested: whichever terminal is detecting the largest number of control codes that pass basic validation (like not trying to move the cursor outside of its meaningful range) is invariably the one the software believes itself to be talking to. Apologies for a non-definitive answer while implementing a CP/M emulator for the Mac I find a fairly even split in the terminals that software available via Walnut Creek, etc, was configured for out of the box between the ADM-3a, VT-52, Hazeltine 1500 and Osborne control sets.
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