diff -Naur idle-lisa-emu-code-r26/mmu/mmu.c idle-lisa-emu-code-r26-patched/mmu/mmu.c
--- idle-lisa-emu-code-r26/mmu/mmu.c	2024-12-15 22:01:12.417848760 +0300
+++ idle-lisa-emu-code-r26-patched/mmu/mmu.c	2024-12-15 21:54:26.356837377 +0300
@@ -1227,14 +1227,14 @@
         romBase=(uint8*)malloc(512*32);
         videoRomBase=(uint8*)malloc(256);
         
-        if (read_alt_rom("bios/fake_booth.bin")!=NULL) {
+        if (read_alt_rom("/usr/share/idle/bios/fake_booth.bin")!=NULL) {
         
             //rom=fopen("bios/booth.hi","rb");
             if (model==1) {
-                rom=fopen("bios/L175REVC.bin","rb");
+                rom=fopen("/usr/share/idle/bios/L175REVC.bin","rb");
                 if (rom==NULL) return "fatal error needs file bios/L175REVC.bin";
             } else {
-                rom=fopen("bios/341-0175-h","rb");
+                rom=fopen("/usr/share/idle/bios/341-0175-h","rb");
                 if (rom==NULL) return "fatal error needs file bios/341-0175-h";
             }
             
@@ -1243,10 +1243,10 @@
             
             //rom=fopen("bios/booth.lo","rb");
             if (model==1) {
-                rom=fopen("bios/L176REVC.bin","rb");
+                rom=fopen("/usr/share/idle/bios/L176REVC.bin","rb");
                 if (rom==NULL) return "fatal error needs file bios/L176REVC.bin";
             } else {
-                rom=fopen("bios/341-0176-h","rb");
+                rom=fopen("/usr/share/idle/bios/341-0176-h","rb");
                 if (rom==NULL) return "fatal error needs file bios/341-0176-h";
             }
             
@@ -1277,7 +1277,7 @@
 
             }        
         }
-        rom=fopen("bios/vidstate.rom","rb");
+        rom=fopen("/usr/share/idle/bios/vidstate.rom","rb");
         if (rom==NULL) return "fatal error needs file bios/vidstate.rom";
         ret=fread(&videoRomBase[0],256,1,rom);
         fclose(rom);