On Mon, Mar 13, 2023 at 11:41 AM Warner Losh wrote: > TOPS-20 had a way to attach and detach from a PTY. But they didn't keep > the state of the screen... programs did, but not the kernel. > That makes sense and is probably what I remember. The big difference when the 8/16 micros came along what the built-in display and thus the need to create a "terminal emulator." ᐧ