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Better timer resolution
- Date: Thu, 11 Mar 2004 11:21:20 -0000
- From: BPSTEVENS at qinetiq.com (Stevens Brian)
- Subject: Better timer resolution
I have been investigating the PC architecture and as far as I can establish
the only timer conencted to the interrupt controller is timer 0 on the the
This leaves the following alternatives:
* Modify the default clock to use a better resolution
This has the problems of increased processor load and needs
the clock routine to be modified to scale back to the original values.
* Use the real time chip
This can give a resoloution of 122 micro seconds, which is
good enough for my needs.
* Use the Advanced Programmable Interrupt Controller
This is available on later chips (pc686 ?) and seems to have
a timer function. I need to investigate this and may go this route if my
hardware will support it. this of course means that it is not usable on all
Any comments, thoughts or assistance greatfully received.
Cody Technology Park,
GU14 0LX .
Telephone (01252) 393959
Fax (01252) 395120
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