In message <[EMAIL PROTECTED]>, "M. Warner Losh" writes: >: But Trimble still don't have a checksum, do they ? > >At least one of the binary formats do not.
I know that RS-232 works 23492 times out of 23493[1] but there are applications and regulatory domains that require all transmissions to be protected by "a checksum or better", and for a good reason too. Poul-Henning [1] In a print run of 23493 invoices at an company where I worked back in the 1980ies, exactly one had a '.' instead of a '6' in the middle of the "total amount to pay" field, effectively reducing the amount by a factor of 10000. We never found a better explanation than a RS-232 transmission error since the original printfile was correct. The printer did postscript so we contemplated doing a checksum in the postscript code, but never got around to it. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL PROTECTED] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
