SD-Mapper big doubt

Hi spawnerbr,

The problem isn't with the SD-Mapper or with Nextor, the problem is with the games. There are many games (a ton of those adapted from ZX Spectrum) that have problems with:

1. RAM in a subslot
2. MSX-DOS2

Using the SD-Mapper you hit both problems: it have an internal slot expander, so the game will run in a subslot and Nextor is created from MSX-DOS2, so it heirs all the incompatibilities that some games have with MSX-DOS2.

As you said in your post that the games runs OK when running from DSK, probably those games have problem with MSX-DOS2. When running the game from DSK it runs under MSX-DOS1.

You can try to use RUNDOS1, or press "1" while your MSX is booting (this will make Nextor boot in MSX-DOS1 mode). Remember, MSX-DOS1 doesn't have native support to subdirectories, the game files needs to be at the root directory or you need to use the external MKDIR/CHDIR/RMDIR commands.

Another point: many of those "bad" games have versions with corrected binaries/loaders in the internet, you can search for them. Can you provide a list of games that you're having problems to load in SD-Mapper?

Five now, my good sir.