Look in .config/elkulator for the config file and ROMs.

--- 6cab45aba68fc3d3bdaea4c28b5de4de0307e00e/src/main.c	2025-05-15 14:23:01.166032559 +0100
+++ 6cab45aba68fc3d3bdaea4c28b5de4de0307e00e/src/main.c	2025-05-15 14:18:33.466558801 +0100
@@ -73,9 +73,7 @@
         int c;
         char *p;
         int tapenext=0,discnext=0,romnext=-2,parallelnext=0,serialnext=0,serialdebugnext=0;
-        get_executable_name(exedir,MAX_PATH_FILENAME_BUFFER_SIZE - 1);
-        p=get_filename(exedir);
-        p[0]=0;
+        snprintf(exedir,sizeof exedir,"%s/.config/elkulator/",getenv("HOME"));
         discname[0]=discname2[0]=tapename[0]=0;
         parallelname[0]=0;serialname[0]=0;
         for (int i = 0; i < 16; i++)