I wrote 2 extention xml for “Nextor” on OpenMSX. Both of ASCII8 mapper and ASCII16 mapper versions are supported in these files.
We can use Nextor easily like MSX-DOS2 Cartridge in this manner, not fully works though.(As far as I know, 2 drive simulation are killed).
Try these files with marvelous Nextor roms as MSX-DOS2 kernel on OpenMSX if you like. It does not needed furthur knowleadge of MSX-DOS2/NEXTOR/Storage devices of MSX.
Download Nextor extension xml for OpenMSX