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From: teexand@ioe.lon.ac.uk (Andrew Dawson)
Newsgroups: comp.sys.atari.st
Subject: TOS 1.4 ROM checksums
Message-ID: <1990Nov14.095130.424@ioe.lon.ac.uk>
Date: 14 Nov 90 09:51:30 GMT
Reply-To: teexand@ioe.lon.ac.uk (Andrew Dawson)
Organization: Institute of Education University of London
Lines: 12

I recently bought the TOS 1.4 (UK) upgrade kit. On each of the chips is a
checksum. Does anyone know how this is calculated? I tried obvious things
such as summing alternate bytes of the first 64K, but couldn't get anything
like the correct values.

(I have no reason to believe my ROMS are corrupt - they seem to work fine.
I'm just curious as to how the checksums are calculated).
-- 

===============================================================================
Andrew Dawson, Computer Centre, University College London, Gower Street,
London WC1E 6BT, England.