Hi,
On Fri, Jun 30, 2017 at 8:02 PM, Jerome Shidel wrote:
>
> In case you haven't heard, there is a severe bug in Intel Skylake and Newer
> CPUs.
Most of us aren't trendy. This Nehalem Westmere (Core gen #1) is my
newest machine (so far). ;-)
> I only know a little about it. From what I heard, it crops up with
> hyper-threading
> inside loops less than 64 bytes effecting several high byte registers (AH,
> BH, etc).
> They are working on a microcode patch and hopefully will have it out soon.
Don't panic! Bugs are part of life ("par for the course").
http://www.os2museum.com/wp/vme-fixed-on-amd-ryzen/
> So, I guess it could effect DOS asm code running inside a VM.
>
> I think it's been a while since there last major bug. Last one I recall was
> that Pentium 90 Floating Point problem.
You mean the FDIV bug? That was fixed in 120 Mhz (and higher) models.
But there have always been other cpu bugs:
* https://en.wikipedia.org/wiki/Pentium_F00F_bug
* (P3 serializing bug)
http://web.archive.org/web/20070808143526/http://clio.rice.edu:80/djgpp/r5bug05.txt
So this is far from the last one we'll see.
--
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
___
Freedos-devel mailing list
Freedos-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/freedos-devel