Siliconinsider

Siliconinsider

Well-known member From Paris France
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  • Siliconinsider
    A celebration of the 68040 with one of my favourite chip from my collection

    68040.jpg
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    Reactions: luRaichu, Powerbase, demik and 2 others
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    Franklinstein
    Franklinstein
    Also, you may know: is the '040 actually internally clock-doubled? The M68040 User's Manual says that it is (or at least, requires its PCLK input to be 2x the BCLK frequency), Apple's '040-based Dev Notes say they are, but everybody else (from Everymac to people on the forum here) says it's untrue. Thoughts?
    Siliconinsider
    Siliconinsider
    The QFP version of the chip says 25/50Mhz or 33/66MHz on the package. Internally it is indeed clock doubled, but only specific portions of the design, so it's a stretch.
    Fizzbinn
    Fizzbinn
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