Hi Gerd,
I have added DEM to my maps using BuilDemFile and without any changes to
splitter parameters. The biggest DEM was about 35MB and the biggest img
about 40MB including 32MB of DEM. I haven't noticed any problems. Even
more, I have build TDB using test version of mkgmap v3999, so mkgmap has
no problems with reading big img with DEM.
I think there is no superficial limit for single img. Internal structure
of img is FAT-alike, and limits comes from this structure. You can get
256 FAT records for a subfile like DEM and 240 sector pointers in each
record. With max sector size 64kB, it makes limit like nearly 4GB.
I don't know if mkgamp uses fixed sector size for created img. If yes,
then limit would be dependent on this value.
--
Best regards,
Andrzej
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