Hi,

In the datasheet 39632C, on the bottom of page 294, there is a Note that says:
"This bit is read-only in normal execution mode; it can be written
only in Program mode."

I think the same can be said of *ALL* the WRTx bits in CONFIG6L and
CONFIG6H.  (Maybe other bits as well, but I didn't test those).

I was able to change a bit in CONFIG2L, and write to program memory,
so I trust my table-writing code.

I feel the Note is somewhat misleading, since it singles out a single bit.

Background: I want to patch a bootloader for the 18F2550. I only need
to change one byte. My plan was to write a program to disable write
protection on the boot block, change the byte, then re-enable write
protection.  This would be reasonably safe, as the change is only
"ones to zeroes" and no erase would be performed.  But I can't disable
write protection on the boot block, so my plan fails.

Regards,
Mark
markrages@gmail
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