flywire wrote:... you must copy smaller maps into and out of it. ...
Magellan .rmp (raster) maps can contain a number of smaller maps. This feature has been used in the AusTopo250k.rmp to compile each of the 49 1:1M map sheets as shown in the Aus1M.gif index file contained within the map archive into a single map. (Other maps use this feature to to display different maps at different zoom levels.) If a smaller map is required then just include less map sheets in the .rmp file. For example the SK55 map sheet contains all of Tasmania with map sheets numbered 49 to 53 and 54 to 65 containing the west and east of Australia respectively.
To make a map of east Australia:
1. Copy AusTopo250k.rmp to EstTopo250k.rmp and Unpack map archive.
2. Delete all .a00 and .tlm files numbered numbered 49 to 53 (eg Perth map sheet is SH50). Delete the Aus1M.gif index file used for documentation too if space is really limited.
3. Edit rmp.ini file, '[T_Layers]=' section. The lines must be numbered starting at '0=' ie '0=T250SC54' to '20=T250SJ56'.
4. Edit cvg_map.msf (Map Support File), 'MAP_COUNT = 21'.
5. Repack map archive, rename to EstTopo250k.rmp and copy to your Magellan Triton or eX10 GPS.