Describe the modifications to the single clock cycle datapath that would be needed to implement the...
Describe the modifications to the single clock cycle datapath that would be needed to implement the jalr instruction (jump and link register), and give the control signal settings that would be required for this instruction.
Homework Answers
The MIPS jump and link instruction, jal is used to support
procedure calls by jumping to jump address (similar to j )
and
saving the address of the following instruction PC+4 in
register
$ra ($31)
jal Address
jal uses the j instruction format:
OP (6bit ) and target address (26bits)
Add any necessary datapaths and control signals to the single-clock
datapath and justify the need for the modification if any.
Specify control line values for this instruction.
Instruction Word ← Mem[PC]
R[31] ← PC + 4
PC ← Jump Address
Add Answer to:
Describe the modifications to the single clock cycle datapath
that would be needed to implement the...
Describe the modifications to the single clock cycle datapath that would be needed to implement the...
Describe the modifications to the single clock cycle datapath that would be needed to implement the jalr instruction, and give the control signal settings that would be required for this instruction.
Part A: We wish to add the datapath parts and control needed to implement the jal...
Part A: We wish to add the datapath parts and
control needed to implement the jal (jump and
link) instruction. Show the additions to the datapath and control
lines of the figure enclosed (Figure 1 below) needed to implement
these instructions in the multicycle datapath. There are multiple
solutions; choose the solution that minimizes the number of clock
cycles for the jal instruction.
Part B: Show the additions to the finite state
machine of Figure 2 below to implement the...
*For a clearer view of the datapath* Answer choices for all Consider the MIPS single cycle...
*For a clearer view of the datapath*
Answer choices for all
Consider the MIPS single cycle datapath shown below. Select the correct control signals that will be generated by the control unit for the following instruction: andi $t0,$t1,4 Instruction (25-01 Shin Jump address (31-0) - left 2) 28 PC +4 [31-28) XCS result left 2 RegDst Jump Branch MemRead Instruction (31-26] MemtoReg Control ALUOP MemWrite ALUSrc RegWrite Instruction (25-21] PC Read address Read register 1 Read Instruction (20-16] Read data...
Pad 1:58 PM * 51% --|- Objectives. Learn how to enhance the datapath and control for...
Pad 1:58 PM * 51% --|- Objectives. Learn how to enhance the datapath and control for both the single cycle and multicycle implementa- tions of a simple ALU Below is table that indicates which control lines are set for each type of instruction for the single- cycle implementation shown in Figure 4.24 of your textbook, which is also shown on the following page. Indi- cate the setting for each control line to support the addiu instruction, which should not require...
Question 4: Single Cycle Datapath Control (15 points) We wish to add the hardware support for...
Question 4: Single Cycle Datapath Control (15 points) We wish to add the hardware support for a special R-type instruction jlr Jump and Link Register) to the single-cycle datapath below. Though this is an R-type instruction, but it is a special one that has the opcode being 000001 (instead of 000000), so the control unit will be able to differentiate this jlr instruction from the other R-type instructions and generate a special set of controls for this instruction. Opcode rs...
Explain what changes would be necessary to add the jr instruction to the single-cycle datapath and...
Explain what changes would be necessary to add the jr instruction to the single-cycle datapath and control.
2. Problems in this exercise assume that logic blocks needed to implement a processor's datapath have...
2. Problems in this exercise assume that logic blocks needed to implement a processor's datapath have the following latencies Instruction Memory Add Mux ALU Register Data Memory Sign-extension 200ps 70ps 20ps 90ps 90ps 250ps 15ps 2.1 If the only thing we need to do in a processor is fetch consecutive instructions (see the figure from Participation Activity 4.3.1 which is also COD Figure 4.6 (A portion of the datapath used for fetching instructions and incrementing the program counter)), what would...
6. Consider a datapath similar to the one in figure below, but for a processor that only has one type of instruction: unconditional PC-relative branch. What would the cycle time be for this dat...
6. Consider a datapath similar to the one in figure below, but for a processor that only has one type of instruction: unconditional PC-relative branch. What would the cycle time be for this datapath? PCSrc Add ALU Add result Shift +( left 2 Read register 1 ALUSrc, 4 ALU operation PCRead PC-address Read data 1 Registers Read data 2 MemWrite Zero ALU ALU-I Address MemtoReg Instruction register 2 Instruction | Write Read data-M register Write Lu memory Write Data data...
For the single-cycle ARM Thumb datapath discussed in class, what is the decimal value of the...
For the single-cycle ARM Thumb datapath discussed in class, what is the decimal value of the lower register file read address input (the one after the mux) while executing the instruction ANDS R3, R4? The table below contains the hexadecimal values of some registers before the instruction is executed. R2 18 R3 69 R4 99
1. [20 Pts] You are given the data-path below. Note that there are three registers. Two of these have a load control input, while the other loads a new value on every clock cycle. There are two t...
1. [20 Pts] You are given the data-path below. Note that there are three registers. Two of these have a load control input, while the other loads a new value on every clock cycle. There are two tri-state drivers that connect the outputs of registers A and Bto a common bus. Finally, there is an ALU that can perform two operations: .Pass Y add X and Y X is always the output of register C, while Y is the value...
Part A: We wish to add the datapath parts and
control needed to implement the jal (jump and
link) instruction. Show the additions to the datapath and control
lines of the figure enclosed (Figure 1 below) needed to implement
these instructions in the multicycle datapath. There are multiple
solutions; choose the solution that minimizes the number of clock
cycles for the jal instruction.
Part B: Show the additions to the finite state
machine of Figure 2 below to implement the...
*For a clearer view of the datapath*
Answer choices for all
Consider the MIPS single cycle datapath shown below. Select the correct control signals that will be generated by the control unit for the following instruction: andi $t0,$t1,4 Instruction (25-01 Shin Jump address (31-0) - left 2) 28 PC +4 [31-28) XCS result left 2 RegDst Jump Branch MemRead Instruction (31-26] MemtoReg Control ALUOP MemWrite ALUSrc RegWrite Instruction (25-21] PC Read address Read register 1 Read Instruction (20-16] Read data...
Pad 1:58 PM * 51% --|- Objectives. Learn how to enhance the datapath and control for both the single cycle and multicycle implementa- tions of a simple ALU Below is table that indicates which control lines are set for each type of instruction for the single- cycle implementation shown in Figure 4.24 of your textbook, which is also shown on the following page. Indi- cate the setting for each control line to support the addiu instruction, which should not require...
Question 4: Single Cycle Datapath Control (15 points) We wish to add the hardware support for a special R-type instruction jlr Jump and Link Register) to the single-cycle datapath below. Though this is an R-type instruction, but it is a special one that has the opcode being 000001 (instead of 000000), so the control unit will be able to differentiate this jlr instruction from the other R-type instructions and generate a special set of controls for this instruction. Opcode rs...
2. Problems in this exercise assume that logic blocks needed to implement a processor's datapath have the following latencies Instruction Memory Add Mux ALU Register Data Memory Sign-extension 200ps 70ps 20ps 90ps 90ps 250ps 15ps 2.1 If the only thing we need to do in a processor is fetch consecutive instructions (see the figure from Participation Activity 4.3.1 which is also COD Figure 4.6 (A portion of the datapath used for fetching instructions and incrementing the program counter)), what would...
6. Consider a datapath similar to the one in figure below, but for a processor that only has one type of instruction: unconditional PC-relative branch. What would the cycle time be for this datapath? PCSrc Add ALU Add result Shift +( left 2 Read register 1 ALUSrc, 4 ALU operation PCRead PC-address Read data 1 Registers Read data 2 MemWrite Zero ALU ALU-I Address MemtoReg Instruction register 2 Instruction | Write Read data-M register Write Lu memory Write Data data...
For the single-cycle ARM Thumb datapath discussed in class, what is the decimal value of the lower register file read address input (the one after the mux) while executing the instruction ANDS R3, R4? The table below contains the hexadecimal values of some registers before the instruction is executed. R2 18 R3 69 R4 99
1. [20 Pts] You are given the data-path below. Note that there are three registers. Two of these have a load control input, while the other loads a new value on every clock cycle. There are two tri-state drivers that connect the outputs of registers A and Bto a common bus. Finally, there is an ALU that can perform two operations: .Pass Y add X and Y X is always the output of register C, while Y is the value...
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