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It is a good thing to optimise the aligned case, but I don't thing that the performance increase will be significative. The real bottle neck here, is the memory access to the cs8900 that requires more than 100ns for a single 16-bit io write. Even flash devices are faster !
Jifl -- eCosCentric http://www.eCosCentric.com/ The eCos and RedBoot experts --[ "You can complain because roses have thorns, or you ]-- --[ can rejoice because thorns have roses." -Lincoln ]-- Opinions==mine
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