We conducted a simulation using the instructions provided in the file instruction.mif and the testbench tb_top to evaluate the pipeline's functionality.
The obtained result matches the expected outcome, which can be verified below.
The simulation included testing the following instructions:
addi x0,x0,0
addi x1,x0,8
addi x2,x0,4
or x3,x1,x2
or x4,x2,x0
add x6,x4,x2
addi x4,x0,2
addi x5,x0,-2
sll x18,x1,x4
srl x19,x5,x4
sra x20,x5,x4
slt x21,x1,x2
slt x22,x2,x1
sltu x23,x5,x1
sltu x24,x1,x5
slti x25,x1,8
slti x26,x1,16
addi x5,x0,-4
sltiu x27,x1,-2
sltiu x28,x5,-2
slli x29,x5,1
srli x30,x5,1
srai x31,x5,1
xori x6,x1,10
ori x7,x1,2
andi x8,x1,10
xor x9,x1,x2The following information is extracted from the simulation log and can be interpreted as demonstrated in the example below:
tt: Register [x] written with value: [hhhhhhhh] | [dddddddd]In the above example, tt represents the simulation time, x represents the register number, hhhhhhhh represents the hexadecimal value stored in the register, and dddddddd represents the same value in decimal.
45: Register [ 0] written with value: [00000000] | [ 0]
55: Register [ 1] written with value: [00000008] | [ 8]
65: Register [ 2] written with value: [00000004] | [ 4]
75: Register [ 3] written with value: [0000000c] | [ 12]
85: Register [ 4] written with value: [00000004] | [ 4]
95: Register [ 6] written with value: [00000008] | [ 8]
105: Register [ 4] written with value: [00000002] | [ 2]
115: Register [ 5] written with value: [fffffffe] | [4294967294]
125: Register [18] written with value: [00000020] | [ 32]
135: Register [19] written with value: [3fffffff] | [1073741823]
145: Register [20] written with value: [ffffffff] | [4294967295]
155: Register [21] written with value: [00000000] | [ 0]
165: Register [22] written with value: [00000001] | [ 1]
175: Register [23] written with value: [00000000] | [ 0]
185: Register [24] written with value: [00000001] | [ 1]
195: Register [25] written with value: [00000000] | [ 0]
205: Register [26] written with value: [00000001] | [ 1]
215: Register [ 5] written with value: [fffffffc] | [4294967292]
225: Register [27] written with value: [00000001] | [ 1]
235: Register [28] written with value: [00000001] | [ 1]
245: Register [29] written with value: [fffffff8] | [4294967288]
255: Register [30] written with value: [7ffffffe] | [2147483646]
265: Register [31] written with value: [fffffffe] | [4294967294]
275: Register [ 6] written with value: [00000002] | [ 2]
285: Register [ 7] written with value: [0000000a] | [ 10]
295: Register [ 8] written with value: [00000008] | [ 8]
305: Register [ 9] written with value: [0000000c] | [ 12]addi x1,x0,8
sub x6,x6,x1
and x7,x6,x1
lui x6,345: Register [ 1] written with value: [00000008] | [ 8]
55: Register [ 6] written with value: [fffffff8] | [4294967288]
65: Register [ 7] written with value: [00000008] | [ 8]
75: Register [ 6] written with value: [00003000] | [ 12288]