11 Jan
2018
11 Jan
'18
4:19 p.m.
Hi Henning, I believe that Garmin uses a formula for these numbers. At least for older maps, City Navigator maps are different. It looks like that: first_mapname = 0x606000 + 2048*family_id overview_mapname = first_mapname + 2047 I don't think any program looks at overview mapname but GPS doesn't accept multiple tiles with the same mapname. -- Best regards, Andrzej