On a default FreeDOS 1.3 installation, are the autodetected UMBs that JEMM386 uses safe?
In my experience, some segments that JEMM386 uses by default are problematic, namely EE00-EFFF. I've had problems using that segment with JEMM386, HiRAM, UMBPCI. Sometimes the system doesn't reboot properly with a soft reset, sometimes programs crash, and sometimes the VM crashes. I'm not 100% sure about C800-CBFF. MSD detects C800-C899 as "possibly available", same as EE00-EFFF. According to my tests, a safe area is CC00-DFFF and E400-EDFF. I'll experiment further with JEMM386 and JEMMEX but I wanted to know what is the consensus. I'm using VirtualBox (v6.1.34 r150636) and FreeDOS 1.3 with default "full" install. _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
