[Simh] pdp11 and unix

[Clem Cole]

On Thu, Feb 25, 2016 at 7:50 PM, Bill Cunningham <billcun at suddenlink.net>
wrote:

> When Ken Thompson coded UNIX it was in assembly.

​Correct...​




> The first versions anyway before B/NB/C

​I do not think that is 100% correct.  B and early UNIX sort of come about
at the same time.   B (and its pseudo model - BCPL) has only one data type
(a word) and that works because UNIX was originally implemented on a word
addressed machine.

NB/C comes out when the Ken starts moving to the 11 which was byte
addressed, as opposed to word addresses of it's predecessors.
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