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Hi guys, I am trying to use external memory overlays for my 21065L project. I have used the overlay manager supplied with the ADSP tools and I have designed my ldf file using the guidelines outlined in the linker manual. However, I cant get it going! Do any of you have a project that uses memory overlays? I am very interested in an example ldf file and maybe some sources files for the project - preferrably asm as well as C files. Thanks in advance Keld Hammerum Andersen DSP Engineer, Ekko Dane A/S, Denmark |
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21065L overlay memory
Started by ●July 26, 2001
Reply by ●July 26, 20012001-07-26
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Hi The Overlay mansger supplied by AD has a draw back. This overlay manager initiates a DMA for transfering an overlay from EX. mem to int. mem. and waits for the DMA completion interrupt in an idle instruction.If any other interrupt (if you use one in your system) goes off in this period, overlay manager comes out of the idle indtruction and cause problems.Try converting this interupt mode into polling mode (ie. monitor DMAC reg. for the DMA completion rather than waiting for the DMA interrupt.) Hope this helps cheers kannan >>> Keld Hammerum Andersen <> 07/26/01 02:00pm >>> Hi guys, I am trying to use external memory overlays for my 21065L project. I have used the overlay manager supplied with the ADSP tools and I have designed my ldf file using the guidelines outlined in the linker manual. However, I can t get it going! Do any of you have a project that uses memory overlays? I am very interested in an example ldf file and maybe some sources files for the project - preferrably asm as well as C files. Thanks in advance Keld Hammerum Andersen DSP Engineer, Ekko Dane A/S, Denmark _____________________________________ Note: If you do a simple "reply" with your email client, only the author of this message will receive your answer. You need to do a "reply all" if you want your answer to be distributed to the entire group. _____________________________________ About this discussion group: To Join: Send an email to To Post: Send an email to To Leave: Send an email to Archives: http://groups.yahoo.com/group/adsp Other Groups: http://www.dsprelated.com/groups.php3 ">http://docs.yahoo.com/info/terms/ |
