Ethereal-dev: Re: [Ethereal-dev] NetXray / Sniffer Time Codes

Note: This archive is from the project's previous web site, ethereal.com. This list is no longer active.

Date Index Thread Index Other Months All Mailing Lists
Date Prev Date Next Thread Prev Thread Next
From: Guy Harris <guy@xxxxxxxxxx>
Date: Thu, 8 Feb 2001 19:16:37 -0800 (PST)
> The classic Sniffer was a notebook PC with Network General's software
> running on top of DOS, but "running on top of DOS" doesn't prevent you
> from whacking the PC system timer to keep whatever time you want,
> including setting the divisor to 1.

...or leaving some larger value in the divisor, but bumping an in-memory
counter whenever the clock interrupts, and combining that counter with
the counter register in the system timer to get a .838096-microsecond
resolution time stamp.