[Info-vax] OT: PDP-11 history in arstechnica

Simon Clubley clubley at remove_me.eisner.decus.org-Earth.UFP
Mon Mar 14 21:29:37 EDT 2022


On 2022-03-14, Arne Vajhøj <arne at vajhoej.dk> wrote:
> On 3/14/2022 8:17 PM, Bob Gezelter wrote:
>> On Monday, March 14, 2022 at 7:47:34 PM UTC-4, Arne Vajhøj wrote:
>>> https://arstechnica.com/gadgets/2022/03/a-brief-tour-of-the-pdp-11-the-most-influential-minicomputer-of-all-time/
>> 
>> Not sure where the author of the arstechnica piece saw "$" for immediate mode, e.g., mov $10,r0. MACRO-11 as I new it, always used a "#", e.g., MOV #SS.XYZ,R0.
>> 
>> Spent lots of time writing and generating assembler for RSX-11 systems and relatives, e.g., P/OS. Did many interesting things.
>
> I have never used a PDP-11 so I have no idea (I am used to # in
> Macro-32).
>

Unix generally uses AT&T syntax. The syntax is expected (and looks
perfectly normal to me) if the author is playing with Unix on a PDP-11.

Simon.

-- 
Simon Clubley, clubley at remove_me.eisner.decus.org-Earth.UFP
Walking destinations on a map are further away than they appear.



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