projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| d21d4302 | 1 | /* clock.h 4.8 82/10/31 */ |
| dc9546ae BJ |
2 | |
| 3 | /* | |
| 4 | * VAX clock registers | |
| 5 | */ | |
| 6 | ||
| dd259ba3 BJ |
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 | |
| dc9546ae BJ |
12 | #define ICCS_ERR 0x80000000 |
| 13 | ||
| 93359143 BJ |
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 | |
| 768f552e | 23 | #define LEAPYEAR(year) ((year)%4==0) /* good till time becomes negative */ |
| 93359143 BJ |
24 | |
| 25 | /* | |
| d21d4302 | 26 | * Has the time-of-day clock wrapped around? |
| 93359143 | 27 | */ |
| 93359143 | 28 | #define clkwrap() (((unsigned)mfpr(TODR) - TODRZERO)/100 > SECYR+SECDAY) |
| 546011e3 BJ |
29 | |
| 30 | /* | |
| 17e0f483 BJ |
31 | * Software clock is software interrupt level 8, |
| 32 | * implemented as mtpr(SIRR, 0x8) in asm.sed. | |
| 546011e3 | 33 | */ |