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Hello, We are developing a fairly large application using a C6711. We are trying to utilize both levels of cache in our implementation. We have the L2 configured to be 1/2 cache and 1/2 SRAM. Our architecture is such that we require the large memory model, so we are compiling our runtime system and our components with the -ml3 option. Compilation with this option generates a .far section to be mapped to a particular location in the memory map by the linker. The problem we experience is that when we have our MAR registers set such that the area of memory which contains the .far section is cached, the program hangs. We moved the .far section to another memory bank, and observed similar results. Does anyone know about any issues surrounding the caching of the .far section? Thanks, Brandon Eames |
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.far section and the C6711 cache
Started by ●February 7, 2001
Reply by ●February 7, 20012001-02-07
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Brandon, I'm using 3-way L2 and -ml2 compilation option and I haven't seen this particular problem. Of course that doesn't help you too much. Are you using EDMA at all ? It so, maybe there are some cache clean calls required. Andrew At 11:51 AM 2/7/01 -0600, Brandon Eames wrote: >Hello, > >We are developing a fairly large application using a C6711. We are trying >to utilize both levels of cache in our implementation. We have the L2 >configured to be 1/2 cache and 1/2 SRAM. Our architecture is such that we >require the large memory model, so we are compiling our runtime system and >our components with the -ml3 option. Compilation with this option generates >a .far section to be mapped to a particular location in the memory map by >the linker. The problem we experience is that when we have our MAR >registers set such that the area of memory which contains the .far section >is cached, the program hangs. We moved the .far section to another memory >bank, and observed similar results. Does anyone know about any issues >surrounding the caching of the .far section? >Thanks, > >Brandon Eames > > >_____________________________________ >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://www.egroups.com/group/c6x > >Other Groups: http://www.dsprelated.com > Regards Andrew Elder ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ AudioScience, Inc. (Rochester Branch) 116 Corwin Rd., Rochester, NY 14610 ph (1) (716) 224 9027 fax (1) (412) 291 1111 <www.audioscience.com> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
