VLSI of classic architectures (was Re: 11/70 board set on

16 Jan 2008

...
    PDP-11 (LSI-11)  
 Definitely not mid 1960s.  The first PDP-11 appeared in 1970, and LSI-11 
 came out in 1975!  
 Well, the architecture was conceived in April 1969, I believe :-).  Guess
 that's not quite mid 1960's. 
I wonder when the Philips P800 architecture was desinged. IIRC the P850 
was first sold in 1970, so presumably the design is the end-of-the-60's.

That architecture was implemented in simple TTL (P850, P855), in Philips' 
own itslice chips (SPALU -- Scratch Pad and Artihmetic Logic Unit, in the 
P851), AMD2900 bitslice (P854) and I don't know if it was ever sold, but 
I seem to have a single-chip LSI version of it too (P853???).

-tony

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VLSI of classic architectures (was Re: 11/70 board set on