firmware for HC12NE64

[DiegoNunes]

Are There some port of TBDML's firmware for NE64? (using serial, of course, not usb).
I have a lot of NE64 and Microchip's PIC18F mcu and I would want to build my BDM using them.

Diego.

[Alban]

Hello Diego,

I changed the subject as the NE64 is an S12 and not an HC12.

The TBDML by default should support the S12NE64. As far as I know it has nothing really special.

What problem do you encounter?
Alban.

[eckhard]

Hello,

the NE64 usually needs a 25 MHz crystal for the PHY. TBDML cant work with this high frequency if the JB8 is used, it has a guaranteed freuency of 16,5 MHz and maybe works with higher frequency crystals. If the JB16 is used it is fast enough for the 25 MHz crystal.

Eckhard

[Alban]

Thank you Eckhard,

I think we misunderstood the question.
Diego seem to want to create a TBDML based on NE64 and not to debug/prog NE64.

Diego,
Have you investigated the DBUG12 tool ?
This is a software based on S12DP256 to program other S12 via BDM from a Terminal (so Serial port).
I doubt it fully matches what you are looking for but you need to know that the DLL to talk with CodeWarrior is not Open Source. Therefore porting the software to an S12 may not be easily possible.

Cheers,
Alban.

[DiegoNunes]

Thanks Alban,

I want to build a BDM or a simple Flash programmer, using NE64, beacuse I have a lot of this mcu.
DBUG12 doesn't have a source code and port it to NE64 will be very hard.