[derleth]

The PDP-11 wasn't a mainframe. It was a minicomputer, which is how Unix came to exist for it in the first place: A mainframe would have been too expensive for such a small project, but a PDP-11 minicomputer was within the budget.

[keithpeter]

Correction accepted. The mainframe was an IBM 360? and I talked to that one with punched cards. The PDP-11 was on a single rack I remember.

[hollerith]

>The mainframe was an IBM 360?

Yes.