Homework Answers
Answer: Chnaging the value of PC
Program Counter(PC) stores the value of instruction that needs to be executed next. Jumpinstruction puts new value in PC. Other things like order of instructions, IR etc are not affected.
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Which of these could be the effect of a JUMP instruction? Changing the order of the...
The following instruction is performed: CMP AX,BX You want to jump to a different location in...
The following instruction is performed: CMP AX,BX You want to jump to a different location in your program if AX ≤ BX. Which instruction would you use to do this and what flag settings are needed for the jump to occur if: a.) If the values in the register were considered unsigned. b.) If the values in the register were considered signed.
A C program has been compiled into the Atmel AVR assembly language. The following instruction, which...
A C program has been compiled into the Atmel AVR assembly
language. The following instruction, which is located at address
0x002A, is executed:
i.) What is the binary value contained in the instruction
register (IR) when the instruction is executed?
ii.) What is the hexadecimal value of the program counter (PC)
when the instruction is executed?
iii.) If register r1 = 0x40 and register r2 = 0x02 prior to
executing the instruction, what are the contents of r1 and r2...
Need help just the answers In the following instruction sequence, show the changed values of AL...
Need help just the answers
In the following instruction sequence, show the changed values of AL where indicated, in binary; a. _____ b. ____ c. ____ d. ______ In the following instruction sequence. show the changed values of AL where indicated, in hexadecimal: a. ____ b. ____ c. _____ d. ____ In the following instruction sequence, show the values of the Carry, Zero, and Sign flags where indicated: a. CF = ___ ZF = ___ SF = ____ b. CF...
Modify the circuit to support a MFCC instruction. MFCC Rd instruction: Move From Condition Codes MFCC copies into the fo...
Modify the circuit to support a MFCC
instruction.
MFCC Rd instruction: Move From Condition Codes
MFCC copies into the four rightmost bits of Rd the values of the
ALU signals Carry (C), Overflow (O), Zero (Z) and Negative (N) as
they were set by the previous R- type instruction. The remaining 28
bits of Rd are set to zero.
Describe the changes and additions needed for the
single-cycle MIPS processor datapath and control to support this
instruction.
Hints:
1) MFCC...
Section B - ARM Assembly Language (25 marks) An ARM instruction set summary is provided at...
Section B - ARM Assembly Language (25 marks) An ARM instruction set summary is provided at the end of this paper 1. (5 marks) Consider the following assembly instruction STMFD r13!, (r5-6} Before executing this instruction, registers hold the following values: Register Value Register r9 Value r4 0x00400040 0x00000000 r5 r10 0x11223344 0x00800080 r6 0x55667788 r11 0x10001000 r7 0x99aabbcc r12 0x20002000 r8 exddeeff00 r13 ex40004000 What memory locations are affected after executing the above instruction? In a table, with a...
HELP ME WITH TRUE / FALSE and Multiple choices. Fixed-width instructions make it difficult to decode...
HELP ME WITH TRUE / FALSE and Multiple choices. Fixed-width instructions make it difficult to decode because the number of bytes each instruction is using can change. True False A register is incremented by either a byte or a word to advance to the next element in an array with Indexed Addressing. True False The "la" instruction is an example of a pseudo-instruction. True False PC-relative addressing uses the program counter as the base address. True False PC-relative addressing uses...
Some ISAs support the concept of an indirect jump. This is written as: jr offset(rn) which...
Some ISAs support the concept of an indirect jump. This is written as: jr offset(rn) which does PC = Memory[rn + offset] If this instruction was added to our pipelined MIPS, and assuming that one branch delay slot is used as is the current practice, how many extra stall cycles must be inserted for this instruction so that no unnecessary instructions are fetched? You must fully justify your answer.
The answer to the table given by teacher is: RegDst-0 Jump-x Branch-1 MemRead-1 MemtoReg-x ALUop-1 MemWrite-x...
The answer to the table given by teacher is:
RegDst-0
Jump-x
Branch-1
MemRead-1
MemtoReg-x
ALUop-1
MemWrite-x
ALUSrc-1 (not sure about this one, please give your answer)
RegWrite-x
x means the signal cannot be set in this instruction.
Could you explain the answer in details?
5. (35 points) We wish to add the single cycle datapath and control. Add an a new instruction im Gump memory) to page. This necessary datapaths and control signals to the attached figure on next new...
The AVR provides a rich instruction set to support high-level languages. The AVR address- ing modes...
The AVR provides a rich instruction set to support high-level languages. The AVR address- ing modes also simplify the access of complex data structures. The AVR has a version of the ADD instruction that includes the C flag as one of the source operands, which enables multiple- precision addition operation. The AVR also has a version of the SUB instruction that includes the C flag as one of source operands and hence is used to perform multiprecision subtraction operation. The...
Question#1 Write a short program demonstrating that the INC and DEC instructions do not affect the...
Question#1 Write a short program demonstrating that the INC and DEC instructions do not affect the Carry flag. Question#2 Write a program that uses addition and subtraction to set and clear the Overflow flag. After each addition or subtraction, insert the call DumpRegs statement to display the registers and flags. Make sure to include an ADD instruction that sets both the Carry and Overflow flags. Using comments, explain how and why the Overflow flag was affected by each instruction. Question#3...
A C program has been compiled into the Atmel AVR assembly
language. The following instruction, which is located at address
0x002A, is executed:
i.) What is the binary value contained in the instruction
register (IR) when the instruction is executed?
ii.) What is the hexadecimal value of the program counter (PC)
when the instruction is executed?
iii.) If register r1 = 0x40 and register r2 = 0x02 prior to
executing the instruction, what are the contents of r1 and r2...
Need help just the answers
In the following instruction sequence, show the changed values of AL where indicated, in binary; a. _____ b. ____ c. ____ d. ______ In the following instruction sequence. show the changed values of AL where indicated, in hexadecimal: a. ____ b. ____ c. _____ d. ____ In the following instruction sequence, show the values of the Carry, Zero, and Sign flags where indicated: a. CF = ___ ZF = ___ SF = ____ b. CF...
Modify the circuit to support a MFCC
instruction.
MFCC Rd instruction: Move From Condition Codes
MFCC copies into the four rightmost bits of Rd the values of the
ALU signals Carry (C), Overflow (O), Zero (Z) and Negative (N) as
they were set by the previous R- type instruction. The remaining 28
bits of Rd are set to zero.
Describe the changes and additions needed for the
single-cycle MIPS processor datapath and control to support this
instruction.
Hints:
1) MFCC...
Section B - ARM Assembly Language (25 marks) An ARM instruction set summary is provided at the end of this paper 1. (5 marks) Consider the following assembly instruction STMFD r13!, (r5-6} Before executing this instruction, registers hold the following values: Register Value Register r9 Value r4 0x00400040 0x00000000 r5 r10 0x11223344 0x00800080 r6 0x55667788 r11 0x10001000 r7 0x99aabbcc r12 0x20002000 r8 exddeeff00 r13 ex40004000 What memory locations are affected after executing the above instruction? In a table, with a...
The answer to the table given by teacher is:
RegDst-0
Jump-x
Branch-1
MemRead-1
MemtoReg-x
ALUop-1
MemWrite-x
ALUSrc-1 (not sure about this one, please give your answer)
RegWrite-x
x means the signal cannot be set in this instruction.
Could you explain the answer in details?
5. (35 points) We wish to add the single cycle datapath and control. Add an a new instruction im Gump memory) to page. This necessary datapaths and control signals to the attached figure on next new...
The AVR provides a rich instruction set to support high-level languages. The AVR address- ing modes also simplify the access of complex data structures. The AVR has a version of the ADD instruction that includes the C flag as one of the source operands, which enables multiple- precision addition operation. The AVR also has a version of the SUB instruction that includes the C flag as one of source operands and hence is used to perform multiprecision subtraction operation. The...
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