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How can I read out the PC?

Mario Lorber

Hi all!

I need to read out the actuall value of the program counter (PC). How can I do that?
I use the Keil uVision environment with an 8051 based controller!

Thanks for your help!

Parents
  • 0 in reply to Mario Lorber

    hi,
    I want to use a "jmp". ...so that I can return back to the source of the jump command. That is like I would use a call function, but without altering the SP!

    Sorry? Why not simple:

    ; main stream
; ....
JMP MY_TASK ; go to your "subroutine"
L_CONTINUE:
; contunue main stream

MY_TASK:
; your piece of code
JMP L_CONTINUE ; return to main stream

    Regards,
    Oleg

Reply
  • 0 in reply to Mario Lorber

    hi,
    I want to use a "jmp". ...so that I can return back to the source of the jump command. That is like I would use a call function, but without altering the SP!

    Sorry? Why not simple:

    ; main stream
; ....
JMP MY_TASK ; go to your "subroutine"
L_CONTINUE:
; contunue main stream

MY_TASK:
; your piece of code
JMP L_CONTINUE ; return to main stream

    Regards,
    Oleg

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