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How to move Data from code memory to regsiters?

Nura
Intellectual 285 points
Other Parts Discussed in Thread: MSP430F2013

 

Hello Forum,

i am a 8051,PIC and AVR user but Just few days back i started playing around with MSP430 mcu ( MSP430F2013), i code in assembly. i have two questions:

1) how to store look table in code memory ?

2) Normally in 8051, we use "DPTR" and "ACC" for data moves from code memory, how to do the same in MSP430 ?

Thank you

Nura

 

 

  • 0
    Guru 58965 points

    For MSP430s, I/O registers, RAM, and FLASH all live in the same "address space" but each with a distinguished address.

    For example, in the case of MSP430F2013: Port 1 Input Register is at 0020h, etc. There are 256 bytes of RAM at 0200h to 02FFh. There are 2KB of Flash at 0F800h to 0FFFFh.

    The instructions treats I/O registers, RAM, or FLASH equally. Thus "MOV.B &0020,R15" will load R15 with Port 1 Input. "MOV.B &0200h,R15" will load R15 with content of RAM at 0200h, and "MOV.B &0F800,R15" will load R15 with content of FLASH at 0F800h. You can also use "MOV.B 0F800h(R14),R15" to load R15 from a table starting at 0F800h using R14 as index.

    Read the Chapter about CPU instruction set in the User's Guide.





  • 0 in reply to old_cow_yellow
    Intellectual 285 points

    OCY

    Thank You

     

    Nura

     

     

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