+
+void gp2x_set_cpuclk(unsigned int mhz);
+
+void set_lcd_custom_rate(int is_pal);
+void unset_lcd_custom_rate(void);
+void set_lcd_gamma(int g100, int A_SNs_curve);
+
+void set_ram_timings(int tCAS, int tRC, int tRAS, int tWR, int tMRD, int tRFC, int tRP, int tRCD);
+void unset_ram_timings(void);
+