| Title: | Euro-PC Support Conference |
| Notice: | Stop your whinning and get back to work! |
| Moderator: | SUTRA::BATS |
| Created: | Mon Jun 12 1989 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 3826 |
| Total number of notes: | 12603 |
Hello, Has anyone read any specification for the system clock in a PC, (Decpc 333 sx lp in particular)? How many seconds +/- per 24h is it allowed to deviate from real time? The reason I ask is that a collegue off mine has replaced a motherboard on a Decpc 333 because the clock was too slow or fast. The PC is connected to a telephone switchboard. The application pick the time from the system clock. In this case the motherboard swap didn't helped, so the switchboard service provider want's to know the clock specifikation for our PC. /Lennart Petersson, MCS, Sweden [Posted by WWW Notes gateway]
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 3780.1 | TARKIN::LIN | Bill Lin | Fri Jan 31 1997 17:27 | 19 | |
re: NETRIX::"[email protected]" I have a simple question for you. If after the time clock is observed to be well off the correct time and you do a reboot, is the time correct again or still wrong? This helps narrow the problem down to whether the CMOS clock is at fault or if the problem is in the software generated clock (based on a separate crystal oscillator) that takes over from the time the system boots up. My thinking here is that the problem probably resides in software. I have observed many programs shut off the clock interrupts in order to boost its own performance. The net result is that after you run that program, the clock is wrong, but if you reboot, a fresh snapshot of the time stored in the CMOS is loaded and the time is correct again. If this is indeed the case, nothing you do in hardware will fix the problem. /Bill | |||||
| 3780.2 | NETRIX::"[email protected]" | Lennart Petersson | Mon Feb 10 1997 14:14 | 7 | |
Yes, I guess you are right. It,s probably a software problem in this case. /Lennart P [Posted by WWW Notes gateway] | |||||