<div>Thanks Ken! I hadn't, even considered the PDP-15. Looks like SimH supports it, that could make for an interesting project...<br></div><div style="font-family: Arial, sans-serif; font-size: 14px; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);"><br></div><div style="font-family: Arial, sans-serif; font-size: 14px; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">- Matt G.<br></div><div class="protonmail_quote">
On Monday, December 18th, 2023 at 6:12 PM, Ken Thompson <kenbob@gmail.com> wrote:<br><br>
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<div dir="ltr">the pdp-7 was run on the almost compatible<div>pdp-9 and pdp-15 computers.<div>i dont think that version of unix ever made</div></div><div>it out of the research department.</div><div><br></div></div><br><div class="gmail_quote"><div class="gmail_attr" dir="ltr">On Mon, Dec 18, 2023 at 5:54 PM segaloco via TUHS <<a href="mailto:tuhs@tuhs.org" rel="noreferrer nofollow noopener" target="_blank">tuhs@tuhs.org</a>> wrote:<br></div><blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex" class="gmail_quote">Are there any documented or remembered instances PDP-7 or Interdata 8/32 UNIX being installed on any such machines for use in the Bell System aside from their original hosts? Along similar lines, was the mention of PDP-7 UNIX also supporting the PDP-9 based solely on consistencies in the architecture or did this early version of UNIX actually get bootstrapped on a real PDP-9 at some point?<br>
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My understanding of the pre-3B-and-VAX landscape of UNIX in the Bell System is predominantly PDP-11 systems, but there was also work in the late 70s regarding 8086 hosts as evidenced in some BSTJ and other publications, and there is the System/370 work (Holmdel?) which I don't know enough about to say whether it technically starts before or after UNIX touches the VAX.<br>
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Thanks for any info!<br>
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- Matt G.<br>
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