Sujet : Re: Keeping other stuff with addresses (was: What is an N-bit machine?)
De : tkoenig (at) *nospam* netcologne.de (Thomas Koenig)
Groupes : comp.archDate : 01. Dec 2024, 15:03:25
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <vihqbd$2hnrp$1@dont-email.me>
References : 1 2 3 4 5 6 7 8 9 10 11
User-Agent : slrn/1.0.3 (Linux)
Anton Ertl <
anton@mips.complang.tuwien.ac.at> schrieb:
Michael S <already5chosen@yahoo.com> writes:
On Sat, 30 Nov 2024 18:08:58 GMT
anton@mips.complang.tuwien.ac.at (Anton Ertl) wrote:
The widest arithmetic registers on AMD64 with AVX-512 are the ZMM
registers with 512 bits each. Sure, they are used for arithmetic on a
sequence of individually narrower data, but the registers have 512
bits nonetheless.
...
8x64 is not the same as 512.
>
Alternative facts?
You can do eight 64-bit additions in AVX-512, but you cannot
do a 512-bit addition.
I think "ALU can add up to n-bit numbers" is a reasonable definition
for an n-bit architecture, which also fits the 16-bit 68000.
It does not fit the 360/30, or the Nova (but see de Castro's remark
on the latter).