j762538
Member
Registered: Feb 2000
Location: El Segundo,CA
Posts: 374 |
quote: Originally posted by argent
PiDirect will not run programs directly from the memory card. That's not possible. The memory on the CF or SM card is not accessible from the Visor. PiDirect will have to do what AutoCF does, and copy individual records from the card when they're "locked" by the application. "Locking" a record is the equivalent of "reading" a block from a file on a conventional OS.
For efficiency, they will probably create a cache of a few hundred K, so that when you request a record in cache it will not be copied in again.
Since applications lock all the code records for a program when it's launched (otherwise they could move around as the program modifies databases), launching a program will effectively load the whole program in.
So, basically, the only time you'll be hitting the actual CF or SM card is when you read new database entries, or when you do a search on a large file.
So does that mean if I want to view a 2 meg map on the CF I need 2 meg on the Visor?
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