CPU direct access to ROM?

Discussion in 'Computer Memory and Hard Drives' started by Seyyed, Jan 25, 2020.

  1. Seyyed

    Seyyed New Member

    Messages:
    2
    Salaam
    It is said that ROM is a primary memory, but according to some sources, ROM data in a computer gets loaded to RAM before CPU can process them. Does it mean that CPU doesn't have direct access to ROM? If that's so, how ROM (whether it be MROM or EPROM) could be called a "primary memory " while CPU doesn't have direct access to its data?
     
  2. revolution221

    revolution221 Member

    Messages:
    52
    The CPU can access ROM but speed's a big issue as well as volatility
    A CPU can read data from RAM (Random access memory) much faster than with ROM (read only memory), even if you have quick storage
    From what I remember, both ram and rom are a kind of primary memory, however RAM is primary-volatile memory (meaning the data is lost when the machine is powered off, etc) while Rom is primary-nonvolatile memory (it retains it's data)
     
  3. Seyyed

    Seyyed New Member

    Messages:
    2
    So, CPU has direct access to ROM, right?
     

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