1 files changed, 19 insertions, 3 deletions
diff --git a/sw/z80/kernel/process.c b/sw/z80/kernel/process.c
index 49b86b8..b43fa11 100644
--- a/sw/z80/kernel/process.c
+++ b/sw/z80/kernel/process.c
@@ -1,16 +1,32 @@
 #include "process.h"
 
-struct process proc_table[255];
+static struct process proc_table[PID_COUNT_MAX];
+static struct process *current_proc;
 
 pid_t newpid(void)
 {
+    int i;
     static pid_t last_pid = 0;
-    return ++last_pid;
+
+    for (i = 0; i < PID_COUNT_MAX; i++, last_pid++) {
+        if (last_pid == PID_COUNT_MAX) {
+            last_pid = 0;
+            continue;            
+        }
+
+        if (!proc_table[last_pid].running)
+            break;
+    }
+
+    if (i >= PID_COUNT_MAX)
+        return 0;
+
+    return last_pid;
 }
 
 int fork(void)
 {
-    
+
 }
 
 int exec(char *path, char *args)