operating system - Had 16-bit DOS a memory access limitation of 1 MB? If yes, how? -


i reading os development series, in there statement,

due 16 bit mode limitations, dos not access more 1 mb of memory

is true? if 2^16, gives 64kb, why article saying 1mb limitation?

google knows answer this. example this wikipedia article on dos memory management states that:

the intel 8088 processor used in original ibm pc had 20 address lines , directly address 1 mb (220 bytes) of memory

other stuff can find google give lots more detail.


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