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View Full Version : Extract dump from MC68HC705B32



Carlos_
22nd November, 2012, 01:51 AM
Hi everyone,

I have an Audi Chorus but I lost the code. After a lot of reading here in DK, I realised that the code is stored in the MC68HC705B32 MCU.
I want to extract the dump but I have no hardware to do it, and I don't want to spend money over this this piece of crap radio. So my question is: can someone tell how to make an homemade cable to connect to LPT1 or COM1, show schematics or something to extract the dump without remove the MCU from the PCB?
Thanks in advance.

Zoka52
22nd November, 2012, 08:50 AM
Motorola Cracker6,2_HC05-705-11

Carlos_
22nd November, 2012, 12:42 PM
Motorola Cracker6,2_HC05-705-11

Thank you so much Zoka52.

But I still have 2 doubts.
One of the pics you sent me, with the MCU pinout does not match the pinout I have, which I am sending you to take a look.
The second doubt regards the other pic. There is a chip called MAX232. That chip is one of those two soldered next to de MCU? I'm also sending you a pic of the MCU so you can see for yourself.

Thank you for your help.