diff --git a/src/pc/controller/controller_entry_point.c b/src/pc/controller/controller_entry_point.c
index be8e773..6c5f93f 100644
--- a/src/pc/controller/controller_entry_point.c
+++ b/src/pc/controller/controller_entry_point.c
@@ -3,15 +3,16 @@
 
 #include "controller_recorded_tas.h"
 #include "controller_keyboard.h"
-
 #include "controller_sdl.h"
 #include "controller_gamebridge.h"
+#include "controller_tas_recorder.h"
 
 static struct ControllerAPI *controller_implementations[] = {
     &controller_recorded_tas,
     &controller_sdl,
     &controller_keyboard,
     &controller_gamebridge,
+    &controller_tas_recorder,
 };
 
 s32 osContInit(OSMesgQueue *mq, u8 *controllerBits, OSContStatus *status) {
diff --git a/src/pc/controller/controller_recorded_tas.c b/src/pc/controller/controller_recorded_tas.c
index 4f5c1bb..af6bf43 100644
--- a/src/pc/controller/controller_recorded_tas.c
+++ b/src/pc/controller/controller_recorded_tas.c
@@ -1,26 +1,48 @@
 #include <stdio.h>
 #include <ultra64.h>
+#include <assert.h>
+#include <fcntl.h>
 
 #include "controller_api.h"
 
-static FILE *fp;
+static FILE *fin;
+static int counter;
+
+#define OFFSET 0x400
+#define fname "cont.m64"
 
 static void tas_init(void) {
-    fp = fopen("cont.m64", "rb");
-    if (fp != NULL) {
-        uint8_t buf[0x400];
-        fread(buf, 1, sizeof(buf), fp);
+    fin = fopen(fname, "rb");
+    if (fin == NULL) {
+        return;
     }
+
+    printf("[tas_playback] loading %s\n", fname);
+    uint8_t buf[OFFSET];
+    fread(buf, 1, sizeof(buf), fin);
+    counter = 0;
 }
 
 static void tas_read(OSContPad *pad) {
-    if (fp != NULL) {
-        uint8_t bytes[4] = {0};
-        fread(bytes, 1, 4, fp);
-        pad->button = (bytes[0] << 8) | bytes[1];
-        pad->stick_x = bytes[2];
-        pad->stick_y = bytes[3];
+    if (fin == NULL) {
+        return;
     }
+
+    uint8_t bytes[4] = {0};
+    int result = fread(bytes, 1, 4, fin);
+    if (feof(fin)) {
+        printf("[tas_playback] end of tas input\n");
+        fclose(fin);
+        fin = NULL;
+        return;
+    }
+
+    pad->button = (bytes[0] << 8) | bytes[1];
+    pad->stick_x = bytes[2];
+    pad->stick_y = bytes[3];
+    counter+=4;
+    printf("[tas_playback] %08x called %04x %02x%02x\n", (counter + OFFSET), pad->button, bytes[2], bytes[3]);
+    fflush(stdout);
 }
 
 struct ControllerAPI controller_recorded_tas = {
diff --git a/src/pc/controller/controller_tas_recorder.c b/src/pc/controller/controller_tas_recorder.c
new file mode 100644
index 0000000..6bd1c99
--- /dev/null
+++ b/src/pc/controller/controller_tas_recorder.c
@@ -0,0 +1,53 @@
+#include <stdio.h>
+#include <ultra64.h>
+#include <assert.h>
+#include <fcntl.h>
+
+#include "controller_api.h"
+
+static FILE *fout;
+static int counter;
+
+#define OFFSET 0x400
+#define fname "rec.m64"
+
+static void tas_recorder_close(void) {
+    fclose(fout);
+    printf("[tas_recorder] saving tas data to %s\n", fname);
+}
+
+static void tas_recorder_init(void) {
+    if (fname == NULL) {
+        fout = NULL;
+        return;
+    }
+
+    unlink(fname);
+    printf("[tas_recorder] writing output to %s\n", fname);
+    fout = fopen(fname, "wb");
+    assert(fout != NULL);
+    uint8_t buf[OFFSET];
+    memset(buf, 0, sizeof(buf));
+    fwrite(buf, 1, sizeof(buf), fout);
+    atexit(tas_recorder_close);
+}
+
+static void tas_recorder_read(OSContPad *pad) {
+    if (fout == NULL) {
+        return;
+    }
+
+    uint8_t bytes[4] = {0};
+    int button1 = pad->button;
+    int button2 = pad->button;
+    bytes[0] = button1 >> 8;
+    bytes[1] = button2 & 0x00FF;
+    bytes[2] = pad->stick_x;
+    bytes[3] = pad->stick_y;
+    fwrite(bytes, 1, 4, fout);
+}
+
+struct ControllerAPI controller_tas_recorder = {
+    tas_recorder_init,
+    tas_recorder_read
+};
diff --git a/src/pc/controller/controller_tas_recorder.h b/src/pc/controller/controller_tas_recorder.h
new file mode 100644
index 0000000..8ceccf8
--- /dev/null
+++ b/src/pc/controller/controller_tas_recorder.h
@@ -0,0 +1,8 @@
+#ifndef CONTROLLER_TAS_RECORDER_H
+#define CONTROLLER_TAS_RECORDER_H
+
+#include "controller_api.h"
+
+extern struct ControllerAPI controller_tas_recorder;
+
+#endif