I'll admit....no I have not dug into the documentation on this, just way too many other things going on, and the expertise is in this group.
   
  So for programming, either via bootloader or ICSP for 18F series devices, how many words are usually delivered per packet?  The basis of the question is, as I raised last week, the idea is to be able to do firmware updates to a device on the end of a cable.  First off of course, is actually putting it into the bootloader mode but I am thinking if its sent a command over the serial link, it can probably force itself since the bootloader simply resides at a specific vector typically (right?).  So the way I see things, it can do the update in two different ways - either upload the new program and store to memory someplace (like a serial flash device) or go into a full bootloader mode where it takes what is coming over the serial link and self writes (think thats how most bootloaders work?).  So for the first option, I have total control over the size of packets being delivered since I am just writing out to a memory device.  For the latter, the bootloader is expecting some
 set size of data chunks to be sent.  My question is...what is that size?  Is it getting a blocks worth of data and writing it out, or is it simply a 16 bit word that it takes it in...and writes to flash, essentially overwriting the flash program memory one location at a time.  If there is some sort of document that describes that, I'm good with that, rather than trying to sift thru different ones to get the information.

       
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