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From: mitchalsup@aol.com (MitchAlsup1)
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Subject: Re: is Vax addressing sane today
Date: Mon, 7 Oct 2024 19:03:59 +0000
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On Sun, 6 Oct 2024 23:36:10 +0000, Lawrence D'Oliveiro wrote:

> On Sun, 06 Oct 2024 08:40:55 GMT, Anton Ertl wrote:
>
>> Number of operand types never has been a criterion in any of the RISC
>> definitions I have seen, nor the number of instructions (although some
>> people like to go by that).
>
> It’s in the name: “Reduced Instruction Set Computer”.
>
> I always thought it should have been “IRSC”: “Increased Register Set
> Computer”. The most obvious characteristic, the one that tends to hit
> you first, is having lots of registers.

At the time of RISC, Denelcor has HEP and each process could have upto
256 registers (along with up to 256 constants).