Quote Originally Posted by skimask View Post
Did you reprogram the '8520 on the BigPic4 board with your own bootloader?
thanks for question and interest :

Bigpic 4 has usb ISP onboard and is not based on bootload process so the 8520 is programed externally and that works.
I tried another programming via RS232 -> COM1 with microcode but failed because of
bootloader problem.

no i did not reprogram 18F8520 because still don't know how to - was trying to load 18F8520_4.hex into MCloader but always the same error " reset target microcontroller ..."

i understand that bootloader code must be written into PIC but how ...
is there any other bootloader worth trying ?


have a nice day