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[mkgmap-dev] address search problem due to required "State" value

From Steve Hosgood steve at tallyho.bc.nu on Fri Aug 28 15:45:28 BST 2009

Mark Burton wrote:
> Hi Maning,
>> Several problems with Search by Address in Garmin Mobile XT reported
>> by some of my users.
> This is a known issue. Until the global index stuff is implemented I
> don't think it will be fixed.

Detectives wanted!

Some or maybe all of the global index is in the .MDR file. Information 
on the this file is starting to appear on:


There's a global sorted city-list appearing in the MDR5 and MDR6 sections.

Great chunks of tables containing short bits of plaintext strings can be 
seen in MDR30/31 and MDR32/33, but as yet no tables have been found 
which glues those bits together to form postcodes, addresses or 
city-names. Contributors familiar with text-compression systems would be 
very welcome to look over it.

You can rip an .MDR file out of an official Garmin .IMG (it isn't 
encrypted as such).

More eyes on the job will increase the chance that someone gets lucky 
and spots crucial clues into how it all works.
Join in please!


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