Q1: Assuming that DI=10016, DS= 140016, SI=FF0016, BX= AE0016, AX=100616 and the memory contents explained in the Table1. Hand trace the execution of the following Table 1 program MOV SI, [BX+33H] Memory Memory Address Content MUL SI 1EE30 92 ADD AL, DH 1EE31 EA CMP AL, 4E16 1ЕЕ32 F5 Then answer the following questions: 1EE33 62 1- What are the values of registers in each statement? 1ЕЕ34 22 2- What is the effect to the flag registers after execution ADD instruction in 1ЕЕ35 8B the third statement of the program?
Instructions and Operation
Nowadays, electrical engineers are required to evolve their practices by incorporating embedded processes, microcontrollers, digital signal processors, and so on. These processors are beneficial in many ways and have changed the perspective of electronic design.
Subroutine Instruction
Subroutine instruction is defined as the instructions used in the programming language in a sequence form saved in memory. They are used to doing a specific task. Subroutine instruction is called a unit that instructs to perform some needed task. There are many programming languages in which subroutine instructions are used but have a different identity or name, such as method, function, subprogram, routine, etc. Subroutine or sub-program is designed or coded as they can be called multiple times while executing the program.
Classification of Buses
A bus inside a microprocessor is a collection of wirelines that contain related information. A group of wires required for communication among the microprocessor and peripherals is known as a system bus. A bus is an electrical or digital passage across which bits are transferred between a variety of computer elements. It mainly links all the internal parts to the CPU (Central Processing Unit) and main memory. The width or size of any bus is crucial since it affects the amount of data that is transferred at a certain time period. Buses always transmit data parallelly, in a 32-bit bus, the information is supplied over 32 wirelines simultaneously and each bus comprises a clock speed measurable in MHz. The various types of buses inside a microprocessor are address bus, data bus, and control bus.
Execution of Instruction
A sequence of instructions makes up a program stored in a computer's memory unit. The CPU executes these instructions by going through a cycle for each instruction. The instruction cycle in a simple computer includes the steps listed below:
![Q1: Assuming that DI=10016, DS= 140016, SI=FF0016, BX= AE0016, AX=100616 and the memory
contents explained in the Table1. Hand trace the execution of the following
Table 1
program
MOV SI, [вх+33н]
Memory
Memory
Address
Content
MUL SI
1EE30
92
ADD AL,
DH
1EE31
EA
CMP AL, 4E16
1ЕЕ32
F5
Then answer the following questions:
1ЕЕ33
62
1- What are the values of registers in each statement?
1ЕЕ34
22
2- What is the effect to the flag registers after execution ADD instruction in
1ЕЕ35
8B
the third statement of the program?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffa2fee72-6032-4947-b4aa-8234b53d5b66%2Fe55c8280-e748-46e8-a9b0-e547a46dc8e3%2Fkbtyui8_processed.jpeg&w=3840&q=75)
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