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Quiz 6
King Fahd University of Petroleum & Minerals
EE390
1. How many bits are in the 8088’s I/O address
2. What is the range of byte addresses in the 8088’s I/O address space
3. What is the size of the 8086’s I/O address space in the terms of word-wide I/O ports
4. In an 8086-based microcomputer system, what are the logic levels of A0 and (BHE)’ when a
byte of data is being written to I/O address A000H?
If a word of data is being written to address A000H?
5. In an 8088 microcomputer system, how many bus cycles are required to output a word of
data to I/O address A000H?
In an 8086 microcomputer system
6. Write an instruction sequence that outputs the byte of data 0FH to an output port at address
1000H
7. Write a sequence of instructions that inputs the byte of data from input ports at I/O address
A000H and B000H, adds these values together, and saves the sum in memory location
IO_SUM