<b>Power Mac 9500s may freeze after processor upgrade

Power Mac 9500s may freeze after processor upgrade

Robert J Moriarty (of MacCPU) writes: "We've just discovered a problem with certain 9500 motherboards when a 180MHz daughtercard or faster is installed and all the memory is interleaved. With the memory interleaved some of these machines will freeze during the memory test during booting. The computer will either require multiple restarts to function or not start at all. The problem exists with either Apple CPUs or third-party daughtercards. A possible work-around is to not interleave the memory. The problem is caused by a timing problem with the interleaved memory when CPU speed goes over 180MHz."

 

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