Re: Help me pick which is best
Jack Erbes wrote:
> The 76CS has a generous amount of internal memory at 115mb but it does
> not have any external memory (a SD card slot for example). If you
> wanted to change from street and highway mapping to topo mapping on the
> fly, you might need to have access to a computer to upload the new mapping.
Not necessarily. Garmin units that accept their map products allow you
to load maps from different types of map products simultaneously. You
can have street maps and topo maps loaded, and switch between them on
the unit. You are of course limited to the max memory of the unit,
which could be more of a limitation if you want to load multiple map
products. You might need access to a computer for *that* reason, but
not to switch map types.
.
Relevant Pages
- Re: File map performance
... could recommend me some tutorials about the best practices of file mapping, since I think if I develop straight forward way of mapping portion of a file which is needed currently, close un-needed mapping, such kinds of straight forward way is not of the best performance. ... When you map a view, unmap the view, and then map the view of the same area again, the data are still in memory unless you are running out of RAM. ... You will get a page fault when accessing the data again, however only a minor one (no disk access, only mapping the memory into the process address space), not a major one. ...
(microsoft.public.vc.language) - Re: Still confused why working set larger than virtual memory
... With the SysInternals Process Explorer the column is called Working Set. ... What you removed is exactly the "smart trick" to have memory "accessible", ... as you map views you never unmap. ... I attach my test source which I used for my file mapping measurements. ...
(microsoft.public.vc.language) - Re: Still confused why working set larger than virtual memory
... I have modified my program to show even if there is no leak, the working set ... Some comments, In my program, I use two ways to hold file map. ... // basic file mapping test ... What you removed is exactly the "smart trick" to have memory ...
(microsoft.public.vc.language) - [PATCH] x86: make e820.c to have common functions
... * replaces the original e820 map with a new one, ... * will have given us a memory map that we can use to properly ... struct e820entry map; ... extern void setup_memory_map; ...
(Linux-Kernel) - Re: Help me pick which is best
... That's why the expandable memory seemed so attractive but then the battery is rechargeable, which I guess may not be a huge problem, but who knows. ... If you wanted to change from street and highway mapping to topo mapping on the fly, you might need to have access to a computer to upload the new mapping. ... In use I would have to change from one regional map to the next as I traveled, it takes about 15 regional map files to cover the entire U.S. with DirectRoute or Topo 3D. ... The process of making the regional map files is a little bit technical or arcane because, while Magellan says that map files can only be 16mb, there many, many, Meridian users that are making and using 64mb map files. ...
(sci.geo.satellite-nav) |
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