Re: [Freedos-devel] VME Broken on AMD Ryzen
Hi, On Fri, May 12, 2017 at 6:36 PM, Ralf Quintwrote: > On 5/12/2017 4:33 PM, Alain Mouette wrote: >> >> On 12-05-2017 16:14, Rugxulo wrote: Should JEMMEX or the FreeDOS installer work around this? >>> Just use "NOVME", and don't worry about it. >> Could you please explain that... >> > Use that parameter when you load JEMMEX, as per instructions > > http://help.fdos.org/en/hhstndrd/base/jemmex.htm > > Ralf ;-) " VME/NOVME options will enable/disable using the V86 Mode Extensions on Pentium+ CPUs. These options can be set from the command line. " -- 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
Re: [Freedos-devel] VME Broken on AMD Ryzen
On 5/12/2017 4:33 PM, Alain Mouette wrote: > > On 12-05-2017 16:14, Rugxulo wrote: >>> Should JEMMEX or the FreeDOS installer work around this? >> Just use "NOVME", and don't worry about it. > Could you please explain that... > Use that parameter when you load JEMMEX, as per instructions http://help.fdos.org/en/hhstndrd/base/jemmex.htm Ralf ;-) --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus -- 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
Re: [Freedos-devel] VME Broken on AMD Ryzen
On 12-05-2017 16:14, Rugxulo wrote: >> Should JEMMEX or the FreeDOS installer work around this? > Just use "NOVME", and don't worry about it. Could you please explain that... Alain -- 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
Re: [Freedos-devel] VME Broken on AMD Ryzen
Hi, On Fri, May 12, 2017 at 11:29 AM, Matej Horvatwrote: > > "To be clear, the problem is not at all specific to virtualization. It has > been confirmed on a Ryzen 5 1500X running FreeDOS—which comes with the > JemmEx memory manager, which enables VME by default. Until VME was > disabled, any attempt to boot with JemmEx failed with invalid opcode > exceptions. After disabling VME, FreeDOS worked normally." > > http://www.os2museum.com/wp/vme-broken-on-amd-ryzen/ It basically says mask out the VME bit when running XP/2k3 under a VM, and that this bug is almost certainly fixable in a microcode update. > Should the FreeDOS Web site warn users about this? Doubtful (unless you think AMD won't fix this any time soon). > Should JEMMEX or the FreeDOS installer work around this? Just use "NOVME", and don't worry about it. -- 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
[Freedos-devel] VME Broken on AMD Ryzen
"To be clear, the problem is not at all specific to virtualization. It has been confirmed on a Ryzen 5 1500X running FreeDOS—which comes with the JemmEx memory manager, which enables VME by default. Until VME was disabled, any attempt to boot with JemmEx failed with invalid opcode exceptions. After disabling VME, FreeDOS worked normally." http://www.os2museum.com/wp/vme-broken-on-amd-ryzen/ Should the FreeDOS Web site warn users about this? Should JEMMEX or the FreeDOS installer work around this? -- 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