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5

According to the official 68030 User Manual, the '030 performs cache burst fills in critical-word-first order specifically to get the execution units running again. However, accesses to the remaining words in the cache line are delayed until the fill is complete. This includes the second part of misaligned accesses, which need to access two words in the ...


36

Earlier revisions had some bugs (errata) but they still work fine and the problems can be worked around. For instance the MMULibs software checks the revision of the chip when the computer boots and disables some problematic features. Doing that has a slight hit on performance but it's probably not noticeable. The main reason why chips with revision 6 are so ...


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