[time-nuts] BC637PCI Flash Memory Dump

GandalfG8 at aol.com GandalfG8 at aol.com
Fri Feb 14 17:01:11 UTC 2014


I've downloaded the flash memory contents from a BC637PCI card, it's a 128K 
 file but also had to save it as 64K to please the disassemblers I found  
online.
That didn't look to be an issue, as far as I can tell only 64K is used  
anyway.
 
The memory chip is a CAT28F010, as opposed to a 29F010 shown in the  
schematics, and the processor is an MC68HC11F1CFN4.
If anyone wants to talk a look my files are here....
 
https://www.mediafire.com/?kavvrm2cow2365c
 
There's the two binary files there plus some of my efforts at disassembly  
but I have to admit the disassembled files do even less for me than the  
binaries:-)
 
Other than some messages at the beginning of the data area that seem to  
relate to file update processes, perhaps for the GPS and oscillator options, 
the  only other obvious text string I found just said BC635IRIG.
I know that may not be too significant in itself but there's 512 bytes of  
EEPROM inside the CPU and I'm wondering if that's handling the personalised 
data  such as serial number and configuration etc.
None of which helps with the 1024 week offset of course:-)
 
Regards
 
Nigel
GM8PZR


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