Well, I may have found something...check it out:
https://web.archive.org/web/20161107094611/ht … .com/snapshots/

"October Update"? So perhaps this is actually a more recent one than the one you were looking for...
I couldn't test this myself (my connection is too slow), but the download starts so the iso seems to be there.

Unbelievable, but your archive.org Link does work, regardless of the file size (usually such big ISO files aren't captured).
Don't know the difference between the file without "October Update" and your referenced file, but it's definitely worth a try.

That's weird cuz it works here, I've now managed to download the iso (boots just fine in qemu too).
You're right though it usually is the case that .isos aren't always preserved by archive.org.

However there's also this one:
http://it.mxrepo.com/Downloads/Snapshots/MX-1 … ae_Apr_2019.iso

That one boasts "non-pae" in its name, at least. EDIT: Looks like cmov is required for this version to boot.

Did not find any hint about when the CMOVA (for example) instruction was introduced - does it exist since Pentium IV or later (Core Solo/Duo) or none of them, instead ... ?

Peter z80.eu wrote on 2022-11-02, 22:46:

Did not find any hint about when the CMOVA (for example) instruction was introduced - does it exist since Pentium IV or later (Core Solo/Duo) or none of them, instead ... ?

Wikipedia says it was introduced with Pentium Pro. So P4 and Cores most probably have it too.

Thanks. "Pentium Pro and later (Pentium II and higher)" is usually called "686", "586" means usually Pentium (1) and above. These folks managing/dealing with the Linux distributions don't care about the filenames I guess.

Finally the enlightment came from this entry: https://lists.debian.org/debian-devel-announc … 5/msg00001.html

Just out of curiosity.
Why Antix ?
Is it because it's a live system ?

I used it a few times as a live CD system, to mirror disks over the network.

1root@antix:~# cat /dev/hda | nc -l -p 8000
2
3alex@desktop:~$ nc 10.0.0.10 8000 > disk.img

But I never installed it.
I have a Debian Potato installed on a 486DX4.
Works well. You can even install packages by the network using apt-get (software repositories are still up, as archive)
Doom on 486 Linux laptop is an usual experience.