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the_vice1304
Visitor II
March 31, 2003
Question

PSD 3200 XRAM space in von neumann mode

  • March 31, 2003
  • 2 replies
  • 674 views
Posted on March 31, 2003 at 21:10

PSD 3200 XRAM space in von neumann mode

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    2 replies

    T
    the_vice1304Author
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 11:53

    Hi guys,

    is there a way to set the 8 KB internal XRAM space in Von Neumann mode ?

    I would use it with keil's MON51 to test small programs (and not)

    J
    joseph2399
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 11:53

    Yes, the uPSD's SRAM can be setup using the Von Neumann architecture. When bit 0 of the VM register is set, _PSEN is used to access the SRAM as Program space. When this bit is cleared, _RD , is used to access the SRAM as DATA space. Please see page 117 of the uPSD323x data sheet for a graphical explaination.

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