Just completed a Slippy Map written in VB.Net. It works exactly as the online Slippies do but works from pre-loaded tiles. The next stage is to incorporate it into BSGPS so that tiles can be downloaded before a mapping trip. Then transfer it to the PDA version.

I've just returned from the West Country on the Train from Penzance to London and was tracking the journey on my PDA with Osmerander moving maps. The cross hair was spot on the black railway line until we approched Weston Super Mare, where it suddenly veered of to the right into white space. Apperently, if the train is not scheduled to stop at WSM it uses a short cut link line, and sure enough that link is missing on the map.

Fortunatly I had the track log recording, so I can put it right.

Using OSM tile maps on a PDA it was so easy to spot.

Now supporting voice recording/playback of POI descriptions

Now displays Osmarender tiles from zoom 10 to 17