[Info-vax] OT: obscure PDP11 OSes (even more dinosaury)

[Rich Alderson]

Hans Vlems <hvlems at freenet.de> writes:

> That PDP-11 was a model 20 IIRC. Did the 11/20 have 18 bit support? 

Like all PDP-11 systems after it, it's a 16-bit machine, with regards to word
size.

The PDP-7, like the PDP-1, -4, -9, and -15, is a word-addressed architecture
with 18 bits per word.  I was not calling the PDP-11 an 18-bit machine.

-- 
Rich Alderson                                   news at alderson.users.panix.com
    the russet leaves of an autumn oak/inspire once again the failed poet/
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