Where should I discuss SD/MMC FAT issues?

[JD123]

YES! I came back here to say I found this, only to see you found it too. The size IS written LSByte first. I can't tell you how many places on the web fail to state this. This is what I just now found:

data length ( =4 bytes ) 

the minimum can be 00 00 00 00 - 0 and the maximum ff ff ff ff -
 4,294,967,295
gb, mb, kb, by

this entry will state the length of data to read in.
eg, AC 3B 96 00
flip these values: 00 96 3B AC
convert to decimal: 9,845,676 bytes or 9.38MB
folders have a value of: 00 00 00 00

Thanks guys for getting me out of this ditch. It's amazing how much time I waste on some of the 'simplest' problems.

skimask, thanks for letting me know what you were able to get for speed. I'm shooting for 100, 8 byte recordings per second, but if I can make 60 I'll be happy. The recordable rate will be selectable and I was picking 100 as a top-shelf goal.

Edit: skimask, sorry... I see what caused the issue about speed. I originally ment to say ONE sector per second, not 600. 600 is the byte rate, not the sector rate. I guess I really WAS pushing the limits, the way I originally stated it!!!