diff --git a/firmware/src/CMakeLists.txt b/firmware/src/CMakeLists.txt
index 9b1df77..b2852ab 100644
--- a/firmware/src/CMakeLists.txt
+++ b/firmware/src/CMakeLists.txt
@@ -1,6 +1,6 @@
 function(make_firmware board board_def)
     add_executable(${board}
-                   main.c buttons.c rgb.c config.c turntable.c
+                   main.c buttons.c rgb.c config.c setup.c turntable.c
                    tt_rainbow.c tt_blade.c
                    usb_descriptors.c)
     target_compile_definitions(${board} PUBLIC ${board_def})
diff --git a/firmware/src/config.c b/firmware/src/config.c
index 5129746..7201790 100644
--- a/firmware/src/config.c
+++ b/firmware/src/config.c
@@ -1,5 +1,5 @@
 /*
- * Controller Config
+ * Controller Config Save and Load
  * WHowe <github.com/whowechina>
  * 
  * Config is stored in last sector of flash
@@ -42,7 +42,7 @@ static int cfg_page = -1;
 static bool requesting_save = false;
 static uint64_t requesting_time = 0;
 
-static core2_locker core2_lock;
+static io_locker_func io_lock;
 
 static void config_save()
 {
@@ -50,7 +50,7 @@ static void config_save()
 
     cfg_page = (cfg_page + 1) % (FLASH_SECTOR_SIZE / FLASH_PAGE_SIZE);
     printf("Program Flash %d %8lx\n", cfg_page, old_cfg.magic);
-    core2_lock(true);
+    io_lock(true);
     uint32_t ints = save_and_disable_interrupts();
     if (cfg_page == 0) {
         flash_range_erase(CONFIG_SECTOR_OFFSET, FLASH_SECTOR_SIZE);
@@ -58,7 +58,7 @@ static void config_save()
     flash_range_program(CONFIG_SECTOR_OFFSET + cfg_page * FLASH_PAGE_SIZE,
                         (uint8_t *)&old_cfg, FLASH_PAGE_SIZE);
     restore_interrupts(ints);
-    core2_lock(false);
+    io_lock(false);
 }
 
 static void load_default()
@@ -101,9 +101,9 @@ static void config_loaded()
     }
 }
 
-void config_init(core2_locker locker)
+void config_init(io_locker_func locker)
 {
-    core2_lock = locker;
+    io_lock = locker;
     config_load();
     config_loop();
     config_loaded();
diff --git a/firmware/src/config.h b/firmware/src/config.h
index 091db25..0bd3600 100644
--- a/firmware/src/config.h
+++ b/firmware/src/config.h
@@ -1,5 +1,5 @@
 /*
- * Controller Config
+ * Controller Config Save and Load
  * WHowe <github.com/whowechina>
  */
 
@@ -9,9 +9,10 @@
 #include <stdlib.h>
 #include <stdbool.h>
 
-typedef void (*core2_locker)(bool pause);
+/* It's safer to lock other I/O ops during saving, so we need a locker */
+typedef void (*io_locker_func)(bool pause);
+void config_init(io_locker_func locker);
 
-void config_init(core2_locker locker);
 void config_loop();
 
 void *config_alloc(size_t size, void *def, void (*after_load)());
diff --git a/firmware/src/main.c b/firmware/src/main.c
index d7811a8..0981197 100644
--- a/firmware/src/main.c
+++ b/firmware/src/main.c
@@ -56,9 +56,17 @@ void boot_check()
     }
 }
 
-static bool core2_pause = false;
+static bool request_core1_pause = false;
 
-static void core2_loop()
+static void pause_core1(bool pause)
+{
+    request_core1_pause = pause;
+    if (pause) {
+        sleep_ms(5); /* wait for any IO ops to finish */
+    }
+}
+
+static void core1_loop()
 {
 #define RUN_EVERY_N_MS(a, ms) { if (frame % ms == 0) a; }
     uint32_t frame = 0;
@@ -71,20 +79,20 @@ static void core2_loop()
         frame++;
         do {
             sleep_ms(1);
-        } while (core2_pause);
+        } while (request_core1_pause);
     }
 }
 
-static void core2_init()
+static void core0_loop()
 {
-    multicore_launch_core1(core2_loop);
-}
-
-static void core2_pause_loop(bool pause)
-{
-    core2_pause = pause;
-    if (pause) {
-        sleep_ms(5); /* wait for any IO ops to finish */
+    while (true)
+    {
+        tud_task();
+        report.buttons = button_read();
+        hid_report();
+        rgb_set_button_light(report.buttons);
+        button_update();
+        config_loop();
     }
 }
 
@@ -101,23 +109,15 @@ void init()
     turntable_init();
     boot_check();
     stdio_init_all();
-    config_init(core2_pause_loop);
-    core2_init();
+    config_init(pause_core1);
 }
 
 int main(void)
 {
     init();
+    multicore_launch_core1(core1_loop);
 
-    while (1)
-    {
-        tud_task();
-        report.buttons = button_read();
-        hid_report();
-        rgb_set_button_light(report.buttons);
-        button_update();
-        config_loop();
-    }
+    core0_loop();
 
     return 0;
 }
diff --git a/firmware/src/setup.c b/firmware/src/setup.c
new file mode 100644
index 0000000..c387a8f
--- /dev/null
+++ b/firmware/src/setup.c
@@ -0,0 +1,8 @@
+/*
+ * Controller Setup Menu
+ * WHowe <github.com/whowechina>
+ * 
+ * Setup is a mode, so one can change settings live
+ */
+
+#include "setup.h"
diff --git a/firmware/src/setup.h b/firmware/src/setup.h
new file mode 100644
index 0000000..9b0d365
--- /dev/null
+++ b/firmware/src/setup.h
@@ -0,0 +1,10 @@
+/*
+ * Controller Setup
+ * WHowe <github.com/whowechina>
+ */
+
+#ifndef SETUP_H
+#define SETUP_H
+
+
+#endif