Hi, On Fri, Jun 30, 2017 at 8:02 PM, Jerome Shidel <jer...@shidel.net> 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