<div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Mar 13, 2023 at 11:41 AM Warner Losh <<a href="mailto:imp@bsdimp.com">imp@bsdimp.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr"> 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.</div></div></blockquote><div><span class="gmail_default" style="font-family:arial,helvetica,sans-serif">That makes sense and is probably what I remember.  The big difference when the 8/16 micros</span> <span class="gmail_default" style="font-family:arial,helvetica,sans-serif">came along what the built-in display and thus the need to create a "terminal emulator."</span></div></div></div><div hspace="streak-pt-mark" style="max-height:1px"><img alt="" style="width:0px;max-height:0px;overflow:hidden" src="https://mailfoogae.appspot.com/t?sender=aY2xlbWNAY2NjLmNvbQ%3D%3D&type=zerocontent&guid=188cd248-4f84-4649-be73-83540003390e"><font color="#ffffff" size="1">ᐧ</font></div>