although no one was interested in helping me solved the problem, put the new system in share \ system \ configs \ emulationstation \ es_systems.cfg, put in the command line emulator dosbox and core dosbox and deleted the other dai worked on emulation station leaving in auto in the core, there is a bug with ms dos system, if you put any of the 2 emulators that are there manually does not work correctly, in auto it finds another emulator that was not declared in the commands, but in a custom system not right