On Sun, Jan 24, 2021 at 7:21 PM Jon Steinhart <jon@fourwinds.com> wrote:I think that X1 was W. But I was doing other stuff at the time and don't
know for sure.Gettys or Keith might know = but I think that is close. My memory was X1 was a port of W to the Vaxstation under Ultrix. Like you I was not paying a lot of attention.
The reference port for X10 was certainly a VAXstation (I/II/GPX). I've compiled and run X10 and X11R1 on SIMH's microVAX II emulation running Ultrix 2.3; my recollection is that it all works right out of the box. Wikipedia says "DEC, then preparing to release its first Ultrix
workstation, judged X the only windowing system likely to become
available in time. DEC engineers ported X6 to DEC's QVSS display on MicroVAX." To me that's unclear if there already was an Ultrix / uVAX port of some other nature or if that was the first iteration.
https://www.talisman.org/x-debut.shtml states that the original X was for the VAXstation 100. I have no idea what OS it would have been running; a release date of 1983 for the VS100 would predate Ultrix 1.0.
-Henry
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