1. The hypothetical machine of figure 3.4 also has two I/O instructions: 0011= Load AC fro I/O 0111= Store AC to I/O In these cases the 12-bit address identifies a particular I/O device. Show the program execution (using format of figure 3.5) for the following program: 1. Load AC from device 5. 2. Add contents of memory location 940. 3. Store AC to device 6. Assume that the next value received from device 5 is 3 and that location 940 contains value of 2.
1. The hypothetical machine of figure 3.4 also has two I/O instructions: 0011= Load AC fro I/O 0111= Store AC to I/O In these cases the 12-bit address identifies a particular I/O device. Show the program execution (using format of figure 3.5) for the following program: 1. Load AC from device 5. 2. Add contents of memory location 940. 3. Store AC to device 6. Assume that the next value received from device 5 is 3 and that location 940 contains value of 2.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Transcribed Image Text:1. The hypothetical machine of figure 3.4 also has two I/O instructions:
0011= Load AC fro I/O
0111= Store AC to I/O
In these cases the 12-bit address identifies a particular I/O device. Show the program execution
(using format of figure 3.5) for the following program:
1. Load AC from device 5.
2. Add contents of memory location 940.
3. Store AC to device 6.
Assume that the next value received from device 5 is 3 and that location 940 contains value of 2.
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