#define CL_CRT1B 0x1b /* Extended Display Controls */
#define CL_CRT1C 0x1c /* Sync adjust and genlock register */
#define CL_CRT1D 0x1d /* Overlay Extended Control register */
+#define CL_CRT1E 0x1e /* Another overflow register */
#define CL_CRT25 0x25 /* Part Status Register */
#define CL_CRT27 0x27 /* ID Register */
#define CL_CRT51 0x51 /* P4 disable "flicker fixer" */