LISP implementations on small machines

[Stefan Skoglund]

ons 2019-10-02 klockan 19:02 +0000 skrev Rich Alderson via cctalk:
> From: Mark Kahrs
> Sent: Tuesday, October 01, 2019 7:24 PM
> 
> > The first implementation was done for the 7090 by McCarthy (hence
> > CAR and
> > CDR --- Contents of Address Register and Contents of Decrement
> > Register).
> 
> In the 70x series of IBM scientific systems (704, 709, 7040, 7090,
> 7044, 7094),
> the word "register" referred to memory locations rather than to the
> accumulator
> or multiplier/quotient.  Each memory register was 36 bits long, and
> could be
> treated as 4 fields: A 15 bit address, a 15 bit decrement, a 3 bit
> tag, and a
> 3 bit index selector.
> 
> In the earliest implementation of LISP, there were 4 functions which
> returned
> the different parts of a register: CAR, CDR, CTR, and CIR.  These
> were
> abbreviations for "Contents of the {Address, Decrement, Tag, Index}
> PART OF THE
> Register", not "Contents of the {Address, Decrement} Register" as is
> so often
> misstated.
> 
>                                                                 Rich
> 
> NB: Information from a talk given on the history of Lisp by Herbert
> Stoyan at
> the 1984 ACM Conference on Lisp and Functional Programming Languages,
> and later
> verified by personal inspection of the code.

It seems that simh has prebuilt ibm 70xx machines with lisp installed.
https://simh.trailing-edge.narkive.com/WiVs5570/release-of-a-set-of-simulators-for-ibm-7000-series-mainframes