I liked the Tolmie bootloader for the 16F876, but now want an
equivalent or better one for the 18F2520 (a nice upgrade for same
footprint and functions and more i/o).
Main features:
-Only 3 wires to the device: RX,TX,G
-Bootload and terminal auto share same serial port.
-Boot begins with a code the device after reset. No timing issues
-Simple small exe program remembers a compiled hex file and path.

Wanted extras-
C source for CCS compiler with a space for adding instructions such
as i/o wanted set while booting.

Maybe use hyperterminal. Slower, but I suspect that communication
and computational time are quite small compared to actual flash write
time.

Another question: Can the differences in programming algorithm for
the 18F processors be reduced to a simple table of block starting
addresses(Or any kind of table)?