Today's Topic CS501 Assignment No 2 Fall 2019

Please carefully read the following instructions before attempting the assignment
OBJECTIVE OF ASSIGNMENT
 Objective of this assignment is to increase the learning capabilities of the students about:
    • Encoding of Assembly Instructions
    • Behavioral RTL description of instruction 
    • ISA of Modified EAGLE
    • Address Bus and Data Bus in Modified EAGLE

RULES FOR ASSIGNMENT
It should be clear that your assignment will get credit only if:
    • The assignment is submitted before or on the due date.
    • The submitted assignment file is not corrupted or damaged.
    • The assignment is not copied (from another student or internet).

UPLOADING INSTRUCTIONS
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    • No assignment will be accepted through email.
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NOTE
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If you find any mistake or confusion in an assignment (Question statement), please consult with your instructor before the deadline. After the deadline, no queries will be entertained in this regard. Moreover, keep checking the announcements section.



 For any query, feel free to email at:
                                        cs501@vu.edu.pk

Question # 01 10 Marks

Consider the below-given table consisting of assembly instructions belonging to different processors.

Instruction	Processor	Hexadecimal Code	Behavioral RTL
JPL R5, [26]	Falcon - A
STS R7, R2 (100)	Falcon - E
STACC R4, 36	Modified EAGLE
DIV R2	EAGLE
SHIFTL R5, R2, 7	FALCON - A

Write machine code (in the hexadecimal representation) and behavioral RTL description for each of the instructions given in table.

Question # 02 10 Marks

Consider the below given tables belonging to Modified EAGLE architecture.

• Table 1 shows the contents of registers R1, R2 and memory labels A, B, C. The contents of memory labels are memory addresses.

Register	Contents	Memory Label	Address
R1	0015h	A	AB10h
R2	25CBh	B	3320h
		C	AB0Eh

Table 1: Contents in Registers and Memory labels

• Table 2 represents byte- aligned memory map and shows the value stored at each memory address.

Memory Address	Memory Contents	Memory Address	Memory Contents
AB0Eh	15h	3320h	CEh
AB0Fh	20h	3321h	55h
AB10h	56h	3322h	39h
AB11h	EFh	3323h	20h

Table 2: Contents at different memory addresses

• Table 3 contains the instructions of an assembly program for Modified EAGLE. You are required to complete Table 3 by writing the values of destination operand, 16-bit address bus and 16-bit data bus after each instruction is executed.

Write the complete steps for calculating the values of Destination Operand, Data Bus & Address Bus after the execution of each instruction.

Instruction	Contents stored in Destination Operand	Data Bus	Address Bus	Calculation Steps
LDACC B
SUB R1
LDACC C
ADD R2
STACC A