Time trouble, system clock issue

[Waidesworld]

I have an NT box which has a single board computer installed on a backplane. Recently I have been having issues with the system clock, yup the one in the right hand corner.
I tested everything as it was jumping a few months forward every few hours so after a number of days it could be as far as fifty years ahead of the actual time. I suspected it was the battery on teh mobo but I switched out this baord for a brand new one and I still have the same problem.
Now I understand that the system should have reset itself but if I power down the computer today as four p.m. it will register four pm no matter when I turn it back on. If I leave it for a while say an hour it could be advances a few months.

Any ideas? I can give more information if needed.

Donal

 

[micker377]

Is this computer on a network where another system could be upsetting the "time" chip?

 

[felixc]

Not sure if NT always reads the time from the RTC or if it uses the timer tick interrupt to manage its time functions.
If you set the time in the BIOS setup, you shut down the machine and power it up later, does the time in the BIOS still follow your watch?

 

[Waidesworld]

1. The computer is not on a network per say. When I first discovered the issue it was attached to an ISDN modem but still experienced issues when I disconnected (physically). When everything is hooked up the computer attachs to the ISDN which is turn attaches to another ISDN box followed by a second computer.

2. I tried setting the time in the BIOS but I haven't checked if it follows my watch. I will check in the office tomorrow and add my comments.

 

[Waidesworld]

OK I set up the computer this morning and set the clock on the BIOS. After 45 minutes it hasn't lost anything. What do I try next?

 

[felixc]

Has your system always been behaving like this, or is this new?

Some operating systems will load the date/time at the system power-up, then will use the system interrupt IRQ0. Which is not related to the hardware real-time clock but is generated by the chipset. This interrupt can be reprogrammed by applications, typically those that use it for real-time control.

Is there any chance that some weird applications have run in this system? You say it's a single-board computer? What brand/model is it? What are you using it for?

 

[Waidesworld]

It is a Rocky 538 TXV single board computer with a 233Mhxz chip. The problem is new. I do have an application (cutom software) which may affect it but even when there is no software running we have seen it jump back.

I just found some Tardis software on it, which is time management. This was uninstalled but seems ot be resident. May do a format to remove it as most typical methods are not working. Will keep all informed.

 

[BadBigBen]

Hola, have you run an AntiVirus progie (up to date of course) and SpyBot Search and Destroy + AdAware SE on the system yet... could be a Worm or Virus doing this to ya...



Ben

If it works don't fix it! If it doesn't use a sledgehammer...