diff --git a/tools/bsnes/chip/fatfs/config.h b/tools/bsnes/chip/fatfs/config.h
new file mode 100644
index 0000000..435e9c3
--- /dev/null
+++ b/tools/bsnes/chip/fatfs/config.h
@@ -0,0 +1,18 @@
+
+#define CMD_INIT        0x00
+#define CMD_READ        0x01
+#define CMD_WRITE       0x02
+#define CMD_NONE        0xff
+
+/* Memory Map */
+#define MMIO_CMD        0x3010
+#define MMIO_SECTOR01   0x3011
+#define MMIO_SECTOR02   0x3012
+#define MMIO_SECTOR03   0x3013
+#define MMIO_SECTOR04   0x3014
+#define MMIO_COUNT      0x3015
+#define MMIO_RETVAL     0x3016
+
+
+#define SHARED_SIZE     512
+#define SHARED_ADDR     0x3f0000
\ No newline at end of file