[time-nuts] TruePosition GPS Receiver firmware

Tom Miller tmiller11147 at verizon.net
Mon May 8 14:53:34 EDT 2017

----- Original Message ----- 
From: "Mark Sims" <holrum at hotmail.com>
To: <time-nuts at febo.com>
Sent: Sunday, May 07, 2017 3:03 AM
Subject: [time-nuts] TruePosition GPS Receiver firmware

> One of my TruePosition GPSDOs fried a chip in the power supply when the 
> wall wart that was powering it failed and started putting out 23V. It 
> apparently ran for a while at that voltage before violently letting the 
> magic smoke out.
> If somebody can read a Spansion S29JL032H90TFI12? chip (some of the last 
> digits are hard to read), I can pull it off the board and send it to you. 
> Searching the dump should reveal strings that show more of what the 
> command set is.  I believe the chip is a 48 pin TSOP.   I don't have the 
> proper adapter for my Data I/O machines.
> _______________________________________________

The two digits before the ? are very important. They describe the memory 
format. You may want to put it under your microscope.

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