The proofs might still run. I'd be keen to help get them going, if
they can be dug up. After Tamarack, Brian Graham verified a
hardware-level SECD machine while a student of Graham Birtwistle.
Perhaps they have running versions of those proofs.

Konrad

On Sun, Apr 1, 2018 at 4:39 AM, Lawrence Paulson <l...@cam.ac.uk> wrote:
> In 1983, using LCF_LSM, Mike verified his computer with the comment “The 
> entire specification and verification described here took several months, but 
> this includes some extending and debugging of LCF_LSM … it would take me two 
> to four weeks to do another similar exercise now. The complete proof requires 
> several hours CPU time on a 2 megabyte Vax/750.”
>
> Jeff Joyce verified several versions of this computer (which he called 
> Tamarack) using HOL. Do any of these proofs still run? I wonder how long it 
> takes now?
>
> Larry
>
>
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