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Hi everybody!! I use 21065L, I tried to use the external memory mapped in external memory bank 3 to memorize stack area and seg_dmda. I have no problem in time compile, but my DSP doesn't work when i upload firmware. Can I use external memory for seg_dmda and stack area ?? Thanks |
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using external memory
Started by ●July 22, 2002
Reply by ●July 22, 20022002-07-22
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On Mon, 2002-07-22 at 08:35, vitcent wrote: > I use 21065L, > I tried to use the external memory mapped in external memory bank 3 > to memorize stack area and seg_dmda. > I have no problem in time compile, but my DSP doesn't work when i > upload firmware. > > Can I use external memory for seg_dmda and stack area ?? Works for me. I'm using SDRAM in MS0 for code, stack, and data. Note that you'll need a recent interim release as earlier version of the libraries had some self-modifying code and the address computations assumed internal PM memory. Address computations for external PM memory work differently. You'll also need to initialize the SDRAM controller before using SDRAM, ie. in your boot loader. |
