better panic

src/config.h

@@ -16,6 +16,8 @@
 /* process */
 #define PROCESS_NAME_MAX 64
 #define PROCESS_STACK_SIZE 0x10000 // 64kb
+#define PROCESS_BASE 0x400000
+#define PROCESS_STACK_BASE 0x1000000
 
 /* sched */
 // 1 tick = 1 ms => quantum = 10ms
@@ -32,4 +34,4 @@
 /* term */
 #define TERM_HISTORY_MAX_LINES 256
 
-#endif
+#endif