On 02/11/2011 02:52 PM, Oliver Seitz wrote
Perhaps the drives... but surely not the file systems. With 368 bytes of ram you won't have to try implementing any file system. I'm not sure if 768 bytes from the 18F4450 will suffice for a file system.
The original schematic (http://justanotherlanguage.org/sites/default/files/pata_hard_disk_schematic.jpg ) used a 16F877 which, like the 887, also has 368 bytes of ram.
Since I'm only streaming MP3/FLAC data, surely this shouldn't be an issue for a 16F887?
You need a bit of speed. That means to read a sector (512 byte) at once. I wouldn't try hard disk access with less than about 1500 bytes ram.
The only 16F chip that has more than 1024 bytes of RAM is the 16F1527, and I prefer to use through hole parts... the 16F1527 is a TQFP/QFN part.
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