+#define TODC_TYPE_DS1553_NVRAM_SIZE 0x1ff0
+#define TODC_TYPE_DS1553_SW_FLAGS 0
+#define TODC_TYPE_DS1553_YEAR 0x1fff
+#define TODC_TYPE_DS1553_MONTH 0x1ffe
+#define TODC_TYPE_DS1553_DOM 0x1ffd /* Day of Month */
+#define TODC_TYPE_DS1553_DOW 0x1ffc /* Day of Week */
+#define TODC_TYPE_DS1553_HOURS 0x1ffb
+#define TODC_TYPE_DS1553_MINUTES 0x1ffa
+#define TODC_TYPE_DS1553_SECONDS 0x1ff9
+#define TODC_TYPE_DS1553_CNTL_B 0x1ff9
+#define TODC_TYPE_DS1553_CNTL_A 0x1ff8 /* control_a R/W regs */
+#define TODC_TYPE_DS1553_WATCHDOG 0x1ff7
+#define TODC_TYPE_DS1553_INTERRUPTS 0x1ff6
+#define TODC_TYPE_DS1553_ALARM_DATE 0x1ff5
+#define TODC_TYPE_DS1553_ALARM_HOUR 0x1ff4
+#define TODC_TYPE_DS1553_ALARM_MINUTES 0x1ff3
+#define TODC_TYPE_DS1553_ALARM_SECONDS 0x1ff2
+#define TODC_TYPE_DS1553_CENTURY 0x1ff8
+#define TODC_TYPE_DS1553_FLAGS 0x1ff0
+#define TODC_TYPE_DS1553_NVRAM_ADDR_REG 0
+#define TODC_TYPE_DS1553_NVRAM_DATA_REG 0
+