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MAC unit and shifting using simulator

Jan Marcol

Hi everybody,
I have got following problem. I use ST10F269 and uVision3. In my program I must use shifting instructions CoSHL, CoSHR and CoASHR. The manual says I can perform up to 16 shifts, but I am able to get only 8 at maximum. Where is the problem? Is that only a problem with simulator?
Thanks for suggestions. Jan

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  • 0 in reply to Keil Software Support Intl.

    Thank you for your answer Reinhard, but you are wrong. User's guide says that there are three possibilities how to use shift instructions.
    1. CoSHL #data5 - so 5 bit immediate data
    2. CoSHL Rwn - shifting through an register
    3. CoSHL [Rwn] - shifting through the indirect addressing

    All those possibilities work up to 8 bits only. I hope this is only the problem with simulator in uVision. So far I can't in uVision3 translate project and built the program to be loaded into the board.At the moment I can use debugger in uVision only.
    Jan

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  • 0 in reply to Keil Software Support Intl.

    Thank you for your answer Reinhard, but you are wrong. User's guide says that there are three possibilities how to use shift instructions.
    1. CoSHL #data5 - so 5 bit immediate data
    2. CoSHL Rwn - shifting through an register
    3. CoSHL [Rwn] - shifting through the indirect addressing

    All those possibilities work up to 8 bits only. I hope this is only the problem with simulator in uVision. So far I can't in uVision3 translate project and built the program to be loaded into the board.At the moment I can use debugger in uVision only.
    Jan

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