ISRO | ISRO CS 2008 | Question 17
The address space of 8086 CPU is
(A) one Megabyte
(B) 256 Kilobytes
(C) 1 K Megabytes
(D) 64 Kilobytes
Explanation: In 8086 architecture there are 16 bit data lines and 20 bit address lines.
16 bit data lines means that the word size must be 2 bytes and these 2 bytes can be read in a single memory cycle.
20 bit address lines corresponds that the memory size is 220byte = 1 mega byte
So, option (A) is correct.