"Diolan Plus" bootloader.

[brdpic]

please help me what should be changed to pic18f4550 (12MHz) "Diolan Plus" bootloader.?

[ian]

Just the crystal and oscillator fuse setting, depending on the crystal and multiplier combination you used.

[brdpic]

Yes you are right.
That's just I can not understand, if before writing the *.hex program to "erase", all recorded fine if you do not - error. This is as it should be, or I made ​​a mistake somewhere?

ps
soft:
- fw_update.exe
- encoder.exe

[ian]

Yes, you must always erase the flash before programming, because it is only possible to flip the bits one direction (as I recall).

[arhi]

Yes, you must always erase the flash before programming, because it is only possible to flip the bits one direction (as I recall).

you can flip them in both directions but the process is different hence usually you move a whole block in one direction (erase) and individual bits in another direction (write)

[brdpic]

Okay, I get it.

The new challenge, the bootloader only works if XINST = 1, and the main program only if XINST = 0. How can this be solved?

[arhi]

Okay, I get it.

The new challenge, the bootloader only works if XINST = 1, and the main program only if XINST = 0. How can this be solved?

You make your program with XINST=1 :)

[brdpic]

Okay, I get it.

The new challenge, the bootloader only works if XINST = 1, and the main program only if XINST = 0. How can this be solved?

I was wrong, "Diolan Plus" bootloader work XINST = 0.

A possible Diolan original made to work with XINST = 0 or add encryption in "Diolan Plus"?

[ian]

I was wrong, "Diolan Plus" bootloader work XINST = 0.

A possible Diolan original made to work with XINST = 0 or add encryption in "Diolan Plus"?

I removed the XINST instructions, there is a 18F24J50 comment at each place, search the code and you should find the changes needed.

[brdpic]

I can not understand why the read-only memory from the address 0x0800 to 0x5FFF.
Why don't read 0x5FFF...0x7FFF PIC18F4550?

[ian]

Not sure exactly what you mean, but without looking thr9ough the code my guess is that is the region where the main firmware is stored so it is blocked to the bootloader?

[brdpic]

Code