diff --git a/dts/riscv_em.dts b/dts/riscv_em.dts
index 16f45df..0e5a059 100644
--- a/dts/riscv_em.dts
+++ b/dts/riscv_em.dts
@@ -29,9 +29,14 @@
         };
     };
 
+    /* Make sure these adresses and sizes match the actual
+    configuration in src/core/riscv_config.h */
     sram: memory@80000000 {
         device_type = "memory";
+        reg = <0x0 0x80000000 0x0  0x8000000>;
+        /* Example alternative configuration with much more RAM
         reg = <0x0 0x80000000 0x0 0x40000000>;
+        */
     };
    
     rom: memory@c0000000 {
diff --git a/src/core/riscv_config.h b/src/core/riscv_config.h
index 36c0345..a3a4736 100644
--- a/src/core/riscv_config.h
+++ b/src/core/riscv_config.h
@@ -9,10 +9,11 @@
 #define MROM_BASE_ADDR 0x1000UL
 #define MROM_SIZE_BYTES 0xf000UL
 
-// #define RAM_BASE_ADDR 0x80000000UL
-// #define RAM_SIZE_BYTES 0x8000000UL /* 128MB such as the default for the qemu virt machine */
-#define RAM_BASE_ADDR          0x80000000UL
+#define RAM_BASE_ADDR 0x80000000UL
+#define RAM_SIZE_BYTES 0x8000000UL /* 128MB such as the default for the qemu virt machine */
+/* Example alternative configuration with much more RAM
 #define RAM_SIZE_BYTES         0x40000000UL
+*/
 
 #define CLINT_BASE_ADDR 0x2000000UL
 #define CLINT_SIZE_BYTES 0x10000UL
diff --git a/src/main.c b/src/main.c
index 52805fa..35aed57 100644
--- a/src/main.c
+++ b/src/main.c
@@ -118,10 +118,6 @@ static void parse_options(int argc,
             case 'i':
             {
                 arg_initrd_file = optarg;
-                // if (arg_fw_file)
-                // {
-                //     printf("Firmware file %s\n", arg_fw_file);
-                // }
                 break;
             }
             case 'n':