DATA ADDRESSING MODE Suppose that ES=7D68, DS-C5DC, SS=8FE7, AX=0BC5, DI=05E9, BP=0ACE, SI=05FD, Var1=0E3C and Var2=08F2, all values in hex. Determine the real-mode memory address accessed by each of the following instructions. a. MOV Var2[BP+SI-DE6], BX b. MOV DL, Var1 [DI][AX][A7h]

DATA ADDRESSING MODE Suppose that ES=7D68, DS-C5DC, SS=8FE7, AX=0BC5, DI=05E9, BP=0ACE, SI=05FD, Var1=0E3C and Var2=08F2, all values in hex. Determine the real-mode memory address accessed by each of the following instructions. a. MOV Var2[BP+SI-DE6], BX b. MOV DL, Var1 [DI][AX][A7h]

Systems Architecture

7th Edition

ISBN:9781305080195

Author:Stephen D. Burd

Publisher:Stephen D. Burd

Chapter4: Processor Technology And Architecture

Section: Chapter Questions

Problem 2PE: If a microprocessor has a cycle time of 0.5 nanoseconds, what’s the processor clock rate? If the...

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Concept explainers

Fundamentals of Input and Output Performance

The I/O subsystem is a component of computer system design that uses buses to assist communication between the Central Processing Unit, Computer Memory/Storage, and Input and Output Devices (that is known as peripheral devices). The I/O subsystem includes disc controllers, tape drives, discs, system buses, and other devices. The I/O database application reads and writes drives using the operating system windows I/O.

Question

DATA ADDRESSING MODE
Suppose that ES-7D68, DS-C5DC, SS=8FE7, AX=0BC5,
DI=05E9, BP=0ACE, SI-05FD, Var1=0E3C and Var2-08F2,
all values in hex. Determine the real-mode memory address
accessed by each of the following instructions.
a. MOV Var2[BP+SI-DE6], BX
b. MOV DL, Var1 [DI][AX][A7h]

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