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[mkgmap-dev] Embedding raster maps

From Steve Ratcliffe steve at parabola.me.uk on Mon Jan 4 16:56:24 GMT 2021

On 04/01/2021 13:07, Oliver Eichler wrote:
> Hi Steve,
> I tested your map. It's not listed either. I have a GPSMap64s and placed it into the internal as well as into the external memory.

Attempting to use the old code was probably a mistake, I've uploaded an 
empty map using a modern version of mkgmap:

This is also in the proper gmapsupp format unlike the previous one.

> I made a minimum test.img, too. It contains no points, lines or areas. It has 3 zoom levels 22..24 with a sub-division each. I also uploaded a log from my test decoder.

> Maybe you can cross check if your device is willing to list them.

My etrex30 does not list either of them.

Re-packing the GMP file into a gmapsupp using mkgmap did not get it
listed either.

I believe that the byte at 0x40 is the start block of the FAT so in
test.img it should be 2.  Patching that byte did not make it load


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