1 /* clock.h 6.1 83/07/29 */ 2 3 /* 4 * VAX clock registers 5 */ 6 7 #define ICCS_RUN 0x00000001 8 #define ICCS_TRANS 0x00000010 9 #define ICCS_SS 0x00000020 10 #define ICCS_IE 0x00000040 11 #define ICCS_INT 0x00000080 12 #define ICCS_ERR 0x80000000 13 14 #define SECDAY ((unsigned)(24*60*60)) /* seconds per day */ 15 #define SECYR ((unsigned)(365*SECDAY)) /* per common year */ 16 /* 17 * TODRZERO is the what the TODR should contain when the ``year'' begins. 18 * The TODR should always contain a number between 0 and SECYR+SECDAY. 19 */ 20 #define TODRZERO ((unsigned)(1<<28)) 21 22 #define YRREF 1970 23 #define LEAPYEAR(year) ((year)%4==0) /* good till time becomes negative */ 24 25 /* 26 * Has the time-of-day clock wrapped around? 27 */ 28 #define clkwrap() (((unsigned)mfpr(TODR) - TODRZERO)/100 > SECYR+SECDAY) 29 30 /* 31 * Software clock is software interrupt level 8, 32 * implemented as mtpr(SIRR, 0x8) in asm.sed. 33 */ 34