1 files changed, 35 insertions, 3 deletions
diff --git a/sw/z80/kernel/process.c b/sw/z80/kernel/process.c
index 49b86b8..049c88c 100644
--- a/sw/z80/kernel/process.c
+++ b/sw/z80/kernel/process.c
@@ -1,16 +1,48 @@
 #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 i, p;
+    pid_t child_pid = newpid();
+
+    if (child_pid == 0)
+        return -1;
+
+
+    for (i = 0; i < current_proc.pages; i++) {
+        p = page_new();
+
+        if (p == -1) {
+            
+            return -2;
+        }
+
+        proc_table[child_pid].page[i] = p;
+    }
 }
 
 int exec(char *path, char *args)