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 video - comparing four modern 64 bit CISC architectures 
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Joined: Wed Jan 09, 2013 6:54 pm
Posts: 1074
50 min talk by Camiel Vanderhoeven from 2017

An introduction to the X86-64 Architecture, and a comparison of this architecture with the VAX, Alpha, and Itanium architectures that OpenVMS currently runs on. Delivered at the OpenVMS Boot Camp 2017 in Westford, MA.

Comparing Architectures: VAX, Alpha, Itanium and X86-64 (OpenVMS Boot Camp 2017)

Can't find the slide deck (yet)

Mon Jan 07, 2019 3:31 pm

Joined: Thu Mar 08, 2018 10:24 am
Posts: 3
It sounds like that the VAX men don't like ARM, MIPS, and x86.

Wed Jan 23, 2019 12:20 pm

Joined: Wed Jan 02, 2019 4:10 pm
Posts: 14
Well, there's a lot to not like about x86, especially if you're used to the VAX - or, for that matter, pretty much *any* sane ISA.

A dislike of ARM and MIPS, however, can only be put down to a bias against RISC. "What, you have to issue separate instructions to load a pre-and-post-indexed-double-indirect memory operand before you can calculate the cube root of it? I should be able to do that all in one instruction!"

Sat Feb 09, 2019 7:05 pm
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