et an instruction that adds BX to D s the contents of the carry flag (C) result.
et an instruction that adds BX to D s the contents of the carry flag (C) result.
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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Question
microprocessor
![1. Select an instruction that adds BX to DX, and also
adds the contents of the carry flag (C) to
the result.
2 Write a short sequence of instructions that subtracts
the numbers in DI, SI, and BP from the
AX register. Store the difference in register BX.
3. Explain the difference between the SUB and CMP
instruction
4 When two 16-bit numbers are multiplied, what two
registers hold the product? Show the registers that
contain the most and least significant portions of
the product.
s. Write a sequence of instructions that cube the 8-bit
number found in DL. Load DL with a
5 initially, and make sure that your result is a 16-bit
number.
. Write an AND instruction that will:
(a) AND BX with DX and save the result in BX
(b) AND OEAH with DH
(c) AND DI with BP and save the result in DI
(e) AND the data addressed by BP with CX and
save the result in memory
7. Develop a short sequence of instructions that clears
(0) the three leftmost bits of DH without
changing the remainder of DH and stores the result
in BH.
8. Develop a short sequence of instructions that sets
(1) the rightmost 5 bits of DI without
changing the remaining bits of DI. Save the results
in SI.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F106d3cbe-b6d1-4ef9-bfce-dffd4e5483b6%2F2ad33ac6-50df-40ce-a710-3049cd1fdf6e%2Fq7wf415_processed.jpeg&w=3840&q=75)
Transcribed Image Text:1. Select an instruction that adds BX to DX, and also
adds the contents of the carry flag (C) to
the result.
2 Write a short sequence of instructions that subtracts
the numbers in DI, SI, and BP from the
AX register. Store the difference in register BX.
3. Explain the difference between the SUB and CMP
instruction
4 When two 16-bit numbers are multiplied, what two
registers hold the product? Show the registers that
contain the most and least significant portions of
the product.
s. Write a sequence of instructions that cube the 8-bit
number found in DL. Load DL with a
5 initially, and make sure that your result is a 16-bit
number.
. Write an AND instruction that will:
(a) AND BX with DX and save the result in BX
(b) AND OEAH with DH
(c) AND DI with BP and save the result in DI
(e) AND the data addressed by BP with CX and
save the result in memory
7. Develop a short sequence of instructions that clears
(0) the three leftmost bits of DH without
changing the remainder of DH and stores the result
in BH.
8. Develop a short sequence of instructions that sets
(1) the rightmost 5 bits of DI without
changing the remaining bits of DI. Save the results
in SI.
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