Do Macs use memory mapped I/O?

majormattmajormatt
Posted:
in General Discussion edited January 2014
Yes or no?

Comments

  • Reply 1 of 3
    gargoylegargoyle Posts: 660member
    Can you clarify ?



    I was under the impression that most devices/drivers kind of "offer" memory space, and when a program addresses that space, it is actually talking to the driver ???
  • Reply 2 of 3
    mac the forkmac the fork Posts: 722member
    http://www.mactech.com/articles/mact...ntoshHardware/



    http://developer.apple.com/documenta...0347/TPXREF109



    I don't know anything about low-level Mac programming, but from these docs, it looks like the answer is yes.
  • Reply 3 of 3
    yevgenyyevgeny Posts: 1,148member
    I can't imagine them not offering memory mapped I/O. This has been a basic feature of operating systems for decades and I know that the BSD's do so (from which Darwin is derived)
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