ColdFire/68K Microcontrollers and Processors中的主题 Modify the program counter in coldfire v2.

Modify the program counter in coldfire v2.

b_q_j — Fri, 17 Oct 2008 09:46:51 GMT

I am trying (without success) to change the program counter from where it is executing in flash (a loader program), to the location of an .s19 file in SRAM, to begin executing. If anyone has an explanation or an example, it would be most helpful. btw I am using a M5213EVB.

Thanks,
Brandon

Re: Modify the program counter in coldfire v2.

admin — Thu, 29 Oct 2020 09:49:37 GMT

Hmm, not sure what the problem could be. In assembly language, you would use the JMP instruction. In a C program, you would use a function call at a specific address:

((void (*)(void))0x12345678)();

Regards,
- mike

Re: Modify the program counter in coldfire v2.

b_q_j — Fri, 17 Oct 2008 23:07:01 GMT

I had never seen that before! Perfect, thank you!

-Brandon