[GeoStL] Re: Branson Caching
- From: "tnsl" <sydstyr@xxxxxxxxxx>
- To: <geocaching@xxxxxxxxxxxxx>
- Date: Thu, 14 Jun 2007 21:58:05 -0500
"Any other requests?"
Yeah .. could you come clean my house??
Nancy
(Yipppeee.. the list let me back in with a REAL email address.)
----- Original Message -----
From: Robert Oelschlaeger
To: geocaching@xxxxxxxxxxxxx
Sent: Thursday, June 14, 2007 9:38 PM
Subject: [GeoStL] Re: Branson Caching
For the entire file, or for each record of say 64 bytes, like a Motorola
S-record file?
8-bit, 12-bit 16-bit or 32-bit? Which polynomial? CCITT-16? CCITT-32? preset
to all 1's first? complemented at the end?
Single-error detecting? Single-error correcting, double-error detecting
Hamming code? That would add three bits per byte, I'd guess.
Adding just a single parity bit to each character add about 10%, so we would
have 4.3860 years.
Adding the file checksum would be negligibly different. Adding a 16-bit CRC
per line of 64 bytes adds 3.125%
Grand total is about 4.5 years.
Any other requests?
Bob (aka roelsch)
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