EVODOS doesn't survive this sequence: mount a TRD in A:, start TR-DOS, LIST, RETURN (to Basic 48), RANDOMIZE USR 15616, LIST, RETURN. This last RETURN doesn't return to Basic, the machine locks up.
Similar lockup happens with this sequence: mount a TRD in A:, start 48K basic, RANDOMIZE USR 15616, LIST, RETURN.
If I just do this: mount a TRD in A:, start 48K basic, RANDOMIZE USR 15616, RETURN, i.e. without doing anything, I am greeted with a C Nonsense in Basic error.