diff --git a/examples/pgztest/pgztest.c b/examples/pgztest/pgztest.c
index bf43b52..ee349a5 100644
--- a/examples/pgztest/pgztest.c
+++ b/examples/pgztest/pgztest.c
@@ -73,9 +73,10 @@ int main(void) {
 	//dirtest();
 
 	while(true) {
+		kernelNextEvent();
 		kernelCall(Clock.GetTime);
 		textGotoXY(0, 0);
-		printf("%d.%d  ", kernelEventData.clock.seconds, kernelEventData.clock.centis);
+		printf("%d.%d  ", kernelArgs->time.seconds, kernelArgs->time.centis);
 	}
 
 	return 0;
diff --git a/f256lib/api.h b/f256lib/api.h
index 247d604..1896ffb 100644
--- a/f256lib/api.h
+++ b/f256lib/api.h
@@ -11,8 +11,13 @@
 #ifndef kernel_api_h
 #define kernel_api_h
 
+
+// Ported from https://github.com/ghackwrench/F256_MicroKernel/blob/master/kernel/api.asm
+
+
 #include <stdint.h>
 
+
 #pragma push_macro("EOF")
 #undef EOF
 
@@ -112,17 +117,17 @@ struct call {  // Mount at $ff00
 // Kernel Call Arguments; mount at $f0
 
 struct events_t {
-    struct event_t *  event;   // GetNextEvent copies event data here
-    char              pending; // Negative count of pending events
+    struct event_t *event;   // GetNextEvent copies event data here
+    char            pending; // Negative count of pending events
 };
 
 struct common_t {
-    char     dummy[8-sizeof(struct events_t)];
-    const void *  ext;
-    uint8_t       extlen;
-    const void *  buf;
-    uint8_t       buflen;
-    void *        internal;
+    char        dummy[8-sizeof(struct events_t)];
+    const void *ext;
+    uint8_t     extlen;
+    const void *buf;
+    uint8_t     buflen;
+    void *      internal;
 };
 
 struct fs_mkfs_t {
@@ -149,6 +154,7 @@ struct fs_open_t {
 enum fs_open_mode {
     READ,
     WRITE,
+    APPEND
 };
 
 struct fs_read_t {
@@ -162,8 +168,13 @@ struct fs_write_t {
     // buflen      = common.buflen
 };
 
+struct fs_seek_t {
+	uint8_t  stream;
+	uint32_t offset;
+};
+
 struct fs_close_t {
-    uint8_t stream;
+	uint8_t stream;
 };
 
 struct fs_rename_t {
@@ -182,21 +193,15 @@ struct fs_delete_t {
     // fname_len   = args.buflen
 };
 
-struct fs_seek_t {
-    uint8_t  stream;
-    uint8_t  cookie;
-    uint32_t offset;
-};
-
 struct file_t {
     union {
         struct fs_open_t    open;
         struct fs_read_t    read;
         struct fs_write_t   write;
+        struct fs_seek_t    seek;
         struct fs_close_t   close;
         struct fs_rename_t  rename;
         struct fs_delete_t  delete;
-        struct fs_seek_t    seek;
     };
 };
 
@@ -234,6 +239,43 @@ struct display_t {
     // buflen      = args.buflen
 };
 
+struct net_init_t {
+	uint16_t source_port;
+	uint16_t dest_port;
+	long     dest_ip;
+};
+
+struct net_send_recv_t {
+	uint8_t accepted;
+	// buf         = args.ext
+	// buflen      = args.extlen
+};
+
+struct net_t {
+	// socket      = args.buf
+	union {
+		struct net_init_t       net_init;
+		struct net_send_recv_t  net_send_recv;
+	};
+};
+
+struct timer_t {
+	uint8_t units;
+	uint8_t absolute;
+	uint8_t cookie;
+};
+
+struct time_t {
+	uint8_t century;
+	uint8_t year;
+	uint8_t month;
+	uint8_t day;
+	uint8_t hours;
+	uint8_t minutes;
+	uint8_t seconds;
+	uint8_t centis;
+};
+
 
 struct call_args {
     struct events_t events;  // The GetNextEvent dest address is globally reserved.
@@ -243,7 +285,9 @@ struct call_args {
         struct file_t     file;
         struct dir_t      directory;
         struct display_t  display;
-     // struct net_t      net;
+        struct net_t      net;
+        struct timer_t    timer;
+        struct time_t     time;
     };
 };
 
@@ -408,20 +452,16 @@ struct event_dir_t {
     };
 };
 
-struct event_clock_t {
-	uint8_t century;
-	uint8_t year;
-	uint8_t month;
-	uint8_t day;
-	uint8_t hours;
-	uint8_t minutes;
-	uint8_t seconds;
-	uint8_t centis;
+struct event_udp_t {
+    uint8_t token;
+};
+
+struct event_tcp_t {
+    uint8_t len;
 };
 
 struct event_timer_t {
-	uint8_t units;
-	uint8_t absolute;
+	uint8_t value;
 	uint8_t cookie;
 };
 
@@ -433,10 +473,10 @@ struct event_t {
         struct event_key_t    key;
         struct event_mouse_t  mouse;
         struct event_game_t   game;
+        struct event_udp_t    udp;
+        struct event_tcp_t    tcp;
         struct event_file_t   file;
         struct event_dir_t    directory;
-        //struct event_net_t    net;
-        struct event_clock_t  clock;
         struct event_timer_t  timer;
     };
 };
diff --git a/f256lib/f256.c b/f256lib/f256.c
index 16c4815..dd2d2c6 100644
--- a/f256lib/f256.c
+++ b/f256lib/f256.c
@@ -64,7 +64,7 @@ void f256Init(void) {
 
 	//***TODO*** The clock stuff doesn't actually work.
 	kernelCall(Clock.GetTime);
-	randomSeed(kernelEventData.clock.centis);
+	randomSeed(kernelArgs->time.centis);
 }
 
 
diff --git a/f256lib/file.c b/f256lib/file.c
index e2d4583..9feb542 100644
--- a/f256lib/file.c
+++ b/f256lib/file.c
@@ -62,7 +62,7 @@ void fileClose(uint8_t *fd) {
 
 #pragma push_macro("close")
 #undef close
-int16_t fileCloseDir(char *dir) {
+int8_t fileCloseDir(char *dir) {
 	if (!dir) return -1;
 
 	for (;;) {
@@ -83,6 +83,28 @@ int16_t fileCloseDir(char *dir) {
 #pragma pop_macro("close")
 
 
+int8_t fileMakeDir(char *dir) {
+	byte  drive;
+
+	dir = pathWithoutDrive(dir, &drive);
+
+	kernelArgs->directory.mkdir.drive = drive;
+	kernelArgs->common.buf = dir;
+	kernelArgs->common.buflen = strlen(dir);
+	kernelCall(Directory.MkDir);
+	if (kernelError) return -1;
+
+	for (;;) {
+		kernelNextEvent();
+
+		if (kernelEventData.type == kernelEvent(directory.CREATED)) break;
+		if (kernelEventData.type == kernelEvent(directory.ERROR))   return -1;
+	}
+
+	return 0;
+}
+
+
 int16_t *fileOpen(char *fname, char *mode) {
 	int16_t  ret = 0;
 	uint8_t  m   = 0;  // Default to READ.
@@ -233,7 +255,29 @@ fileDirEntT *fileReadDir(char *dir) {
 #pragma pop_macro("EOF")
 
 
-int16_t fileRename(char *name, char *to) {
+int8_t fileRemoveDir(char *dir) {
+	byte  drive;
+
+	dir = pathWithoutDrive(dir, &drive);
+
+	kernelArgs->directory.mkdir.drive = drive;
+	kernelArgs->common.buf = dir;
+	kernelArgs->common.buflen = strlen(dir);
+	kernelCall(Directory.RmDir);
+	if (kernelError) return -1;
+
+	for (;;) {
+		kernelNextEvent();
+
+		if (kernelEventData.type == kernelEvent(directory.DELETED)) break;
+		if (kernelEventData.type == kernelEvent(directory.ERROR))   return -1;
+	}
+
+	return 0;
+}
+
+
+int8_t fileRename(char *name, char *to) {
 	byte    drive;
 	byte    drive2;
 	int16_t path1;
@@ -280,7 +324,7 @@ void fileReset(void) {
 }
 
 
-int16_t fileSeek(uint8_t *fd, uint32_t offset, uint8_t whence) {
+int8_t fileSeek(uint8_t *fd, uint32_t offset, uint8_t whence) {
 	if (whence != SEEK_SET) return -1;
 
 	//***TODO*** We should do this manually for IEC devices.
@@ -294,7 +338,7 @@ int16_t fileSeek(uint8_t *fd, uint32_t offset, uint8_t whence) {
 }
 
 
-int16_t fileUnlink(char *name) {
+int8_t fileUnlink(char *name) {
 	byte drive;
 
 	name = pathWithoutDrive(name, &drive);
diff --git a/f256lib/file.h b/f256lib/file.h
index ea6db13..4bf183b 100644
--- a/f256lib/file.h
+++ b/f256lib/file.h
@@ -42,15 +42,17 @@ typedef struct fileDirEntS {
 
 
 void         fileClose(uint8_t *fd);
-int16_t      fileCloseDir(char *dir);
+int8_t       fileCloseDir(char *dir);
+int8_t       fileMakeDir(char *dir);
 int16_t     *fileOpen(char *fname, char *mode);
 char        *fileOpenDir(char *name);
 int16_t      fileRead(void *buf, uint16_t nbytes, uint16_t nmemb, uint8_t *fd);
 fileDirEntT *fileReadDir(char *dir);
-int16_t      fileRename(char *name, char *to);
+int8_t       fileRemoveDir(char *dir);
+int8_t       fileRename(char *name, char *to);
 void         fileReset(void);
-int16_t      fileSeek(uint8_t *fd, uint32_t offset, uint8_t whence);
-int16_t      fileUnlink(char *name);
+int8_t       fileSeek(uint8_t *fd, uint32_t offset, uint8_t whence);
+int8_t       fileUnlink(char *name);
 int16_t      fileWrite(void *buf, uint16_t nbytes, uint16_t nmemb, uint8_t *fd);
 
 
@@ -75,10 +77,12 @@ int16_t      fileWrite(void *buf, uint16_t nbytes, uint16_t nmemb, uint8_t *fd);
 #define fread      fileRead
 #define fseek      fileSeek
 #define fwrite     fileWrite
+#define mkdir(d,m) fileMakeDir(d)
 #define opendir    fileOpenDir
 #define readdir    fileReadDir
 #define rename     fileRename
 #define rewind(s)  (void)fileSeek(s, 0, SEEK_SET)
+#define rmdir      fileRemoveDir
 #define SEEK_SET   0
 #define STDIN      0
 #define STDOUT     1
diff --git a/f256lib/kernel.c b/f256lib/kernel.c
index 3de69e4..25acbc9 100644
--- a/f256lib/kernel.c
+++ b/f256lib/kernel.c
@@ -26,7 +26,6 @@
 
 kernelEventT kernelEventData;  // Allocate some RAM to hold event data.
 kernelArgsT *kernelArgs;       // Create an alias for the kernel args.
-char         kernelReturn;
 char         kernelError;
 
 
diff --git a/f256lib/kernel.h b/f256lib/kernel.h
index ed101b1..a741820 100644
--- a/f256lib/kernel.h
+++ b/f256lib/kernel.h
@@ -38,33 +38,18 @@ extern "C"
 #define kernelEvent(member)   (size_t)(&((struct events *)0)->member)
 #define kernelVector(member)  (size_t)(&((struct call *)0xff00)->member)
 #define kernelCall(fn) \
-({ char ret; asm( \
-                    "jsr %[addy] \n" \
-                    "sta (%[ret])  \n" \
-                    "lda #0        \n" \
-                    "ror a         \n" \
-                    "sta (%[err])  \n" \
-                    : [err] "=m"(kernelError), [ret] "=m"(ret) \
-                    : [addy] "i"(kernelVector(fn)) \
-                    : "a", "c", "v"); \
-                ret; })
-/*
-asm (
-	".text\n"
-	".global kernelwrapper\n"
-	"kernelwrapper: \n"
-	"   jsr 1f      \n"
-	"   tax         \n"
-	"   lda #0      \n"
-	"   ror a       \n"
-	"   sta (__rs2) \n"
-	"   txa         \n"
-	"   rts         \n"
-	"1: jmp (__rs1) \n"
-	);
-unsigned char kernelwrapper(void *vector, char *error);
-#define kernelCall(fn) kernelwrapper((void*)kernelVector(fn), &kernelError)
-*/
+                ({ char ret; \
+                    __attribute__((leaf)) asm( \
+                        "jsr %[addy]   \n" \
+                        "sta (%[ret])  \n" \
+                        "lda #0        \n" \
+                        "ror a         \n" \
+                        "sta (%[err])  \n" \
+                        : [err] "=m"(kernelError), [ret] "=m"(ret) \
+                        : [addy] "i"(kernelVector(fn)) \
+                        : "a", "c", "v"); \
+                    ret; \
+                })
 
 
 typedef struct event_t   kernelEventT;
@@ -73,7 +58,6 @@ typedef struct call_args kernelArgsT;
 
 extern kernelEventT kernelEventData;
 extern kernelArgsT *kernelArgs;
-extern char         kernelReturn;
 extern char         kernelError;