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[mkgmap-dev] Index branch - success!

From Steve Ratcliffe steve at parabola.me.uk on Sat Feb 12 15:42:48 GMT 2011

On 12/02/11 15:32, WanMil wrote:
> I observed that the MapSource search menu is disabled if the MDR file is
> larger than 0x7FFFFFF (134217727) bytes.
> Maybe in this case a flag must be set?

My guess is in ImgHeader:

// This sectors, head, cylinders stuff appears to be used by mapsource
// and they have to be larger than the actual size of the map.  It
// doesn't appear to have any effect on a garmin device or other software.
int sectors = 0x20;   // 0x20 appears to be a max
header.putShort(OFF_SECTORS, (short) sectors);
int heads = 0x20;     // 0x20 appears to be max
header.putShort(OFF_HEADS, (short) heads);
int cylinders = 0x100;   // gives 128M will try more later

Try boosting cylinders to 0x200, or try to find if there is a maximum
useful value like it appears that there is for the others.


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