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  1. Raptor007

    Powermac 9600 G3 problems

    You might be having problems with Speculative Access.  Basically, all modern CPUs guess what instructions might come next, execute them, and then keep or discard the results.  This is a problem when the CPU guesses I/O instructions that change the state of something, and G3 upgrades in Old World...
  2. Raptor007

    Questions about LC040 and 16 bit bus

    Fortunately mine's an MC68040RC40A marked 02L88M, which apparently means it's a more recent production with a smaller die: http://eab.abime.net/showthread.php?p=647148#post647148 But I should probably pop a heat sink on there just in case.  I bet I've got something in my basement parts dungeon...
  3. Raptor007

    Questions about LC040 and 16 bit bus

    Does the full '040 run hotter than the LC040?  I just did the swap in a Performa 575 without adding a heat sink and it seems fine, but I didn't really stress test it or check the temperatures.
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