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Philips LPC memory questions

Hello, I'm currently using some of the LPC932's
XRAM with settings of "Use On-Chip XRAM" and memry model PDATA, which I understand will only acess 256 bytes. How can I access the other 256? If I use the Large memory model, do I have to define vars as xdata myvar? How does this affect using on-chip xram and real external ram? Thanks in advance.

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  • Hello, I'm currently using some of the LPC932's XRAM with settings of "Use On-Chip XRAM" and memry model PDATA, which I understand will only acess 256 bytes. How can I access the other 256?
    XDATA

    If I use the Large memory model, do I have to define vars as xdata myvar? How does this affect using on-chip xram and real external ram?

    If you drive a steamroller do you have to yeld? - same question.

    When using the large memory model you have to select what must be fast - that is an order of maginitude more difficult than selecting what can be slow (typically arrays).

    Erik

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  • Hello, I'm currently using some of the LPC932's XRAM with settings of "Use On-Chip XRAM" and memry model PDATA, which I understand will only acess 256 bytes. How can I access the other 256?
    XDATA

    If I use the Large memory model, do I have to define vars as xdata myvar? How does this affect using on-chip xram and real external ram?

    If you drive a steamroller do you have to yeld? - same question.

    When using the large memory model you have to select what must be fast - that is an order of maginitude more difficult than selecting what can be slow (typically arrays).

    Erik

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