* 0x01 : C64 Chameleon cartridge present
*/
+
+/* C65/C64DX in C64 mode */
+
+unsigned char __fastcall__ set_c65_speed (unsigned char speed);
+
+/* Set the speed of the C65/C64DX CPU, using SPEED_SLOW will switch to
+ * 1 Mhz mode, SPEED_3X or SPEED_FAST will switch to 3.5 Mhz (fast) mode.
+ *
+ * Note that any value higher or equal to SPEED_3X will switch to fast mode.
+ *
+ * This function will return the actual speed the CPU is at after trying
+ * to set the requested speed, to my knowledge the switching should not fail.
+ *
+ * This function does not check for the presence of a C65/C64DX in C64 mode,
+ * make sure you use 'detect_c65();' before using.
+ */
+
+unsigned char get_c65_speed (void);
+
+/* Get the speed of the C65/C64DX CPU.
+ *
+ * Possible return values:
+ * SPEED_SLOW : Slow mode
+ * SPEED_3X : Fast mode
+ *
+ * This function does not check for the presence of a C65/C64DX in C64 mode,
+ * make sure you use 'detect_c65();' before using.
+ */
+
+unsigned char detect_c65 (void);
+
+/* Check for the presence of a C65/C64DX in C64 mode.
+ *
+ * Possible return values:
+ * 0x00 : C65/C64DX in C64 mode not present
+ * 0x01 : C65/C64DX in C64 mode present
+ */
/* End of accelerator.h */
#endif