change operands for some instructions and start work on devices

src/device.h

@@ -1,5 +1,18 @@
 #pragma once
+#include <stdint.h>
+#include <stdlib.h>
 
 typedef struct {
+    char name[32];
 
-} Device;
+    void (*sendToDevice)(uint16_t number);
+    uint16_t (*receiveFromDevice)();
+    void (*update)();
+} Device;
+
+Device* createDevice(
+    const char* name,
+    void (*sendToDevice)(uint16_t number),
+    uint16_t (*receiveFromDevice)(),
+    void (*update)()
+);