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    SubjectRe: Linux Buffer Overflow Security Exploits
    Date
    Once upon a time, Steve Dodd <dirk@loth.demon.co.uk> said:
    >I guess it depends /which/ 16bit CPUs. 68000 was technically a 16bit CPU,
    >but it had 24 address bits (tho' only _23_ address lines, but that's different
    >brain damage :) Actually, didn't it have 32 bit wide data registers? Maybe it
    >wasn't a 16bit CPU after all..

    The 68000 was a 32 bit CPU. It had 32 bit registers and could do 32 bit
    operations. However, it had a 16 bit address bus and a 24 bit address
    bus. The address bus was implemented as 23 address lines (A1-A23), a
    low byte select line, and a high byte select line. IIRC when both the
    low and high select lines were enabled, the data lines became interrupt
    lines, selecting interrupts 0-15 (but it has been a while so I probably
    don't RC).
    --
    Chris Adams - cadams@ro.com
    System Administrator - Renaissance Internet Services
    I don't speak for anybody but myself - that's enough trouble.

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