TT_RTC_BAS        606 include/asm-m68k/atarihw.h #define	tt_rtc	((*(volatile struct TT_RTC *)TT_RTC_BAS))
TT_RTC_BAS         13 include/asm-m68k/mc146818rtc.h #define RTC_PORT(x)	(TT_RTC_BAS + 2*(x))