-
Notifications
You must be signed in to change notification settings - Fork 3
/
example_output.txt
911 lines (908 loc) · 113 KB
/
example_output.txt
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
╔═════╦═════════════════════════════[PROGRAM]═══════════╦════════════════════════╗
║ 0 ║ 0x2008000F = 0b00100000000010000000000000001111 ║ addi $t0, $zero, 15 ║
║ 4 ║ 0xAC080000 = 0b10101100000010000000000000000000 ║ sw $t0, 0($zero) ║
║ 8 ║ 0x200900F0 = 0b00100000000010010000000011110000 ║ addi $t1, $zero, 240 ║
║ 12 ║ 0xAC090004 = 0b10101100000010010000000000000100 ║ sw $t1, 4($zero) ║
║ 16 ║ 0x01095820 = 0b00000001000010010101100000100000 ║ add $t3, $t0, $t1 ║
║ 20 ║ 0x8C0C0004 = 0b10001100000011000000000000000100 ║ lw $t4, 4($zero) ║
║ 24 ║ 0x018B6818 = 0b00000001100010110110100000011000 ║ mult $t5, $t4, $t3 ║
║ 28 ║ 0xAC0D0008 = 0b10101100000011010000000000001000 ║ sw $t5, 8($zero) ║
║ 32 ║ 0x8C100008 = 0b10001100000100000000000000001000 ║ lw $s0, 8($zero) ║
║ 36 ║ 0x2011EF10 = 0b00100000000100011110111100010000 ║ addi $s1, $zero, 61200 ║
║ 40 ║ 0x20170001 = 0b00100000000101110000000000000001 ║ addi $s7, $zero, 1 ║
║ 44 ║ 0x12110001 = 0b00010010000100010000000000000001 ║ beq $s0, $s1, 1 ║
║ 48 ║ 0x22F70001 = 0b00100010111101110000000000000001 ║ addi $s7, $s7, 1 ║
╚═════╩═════════════════════════════════════════════════╩════════════════════════╝
────────────────────────────────────── CLK #0 ──────────────────────────────────────
> Stage IF: #0 = [addi $t0, $zero, 15].
────────────────────────────────────────────────────────────────────────────────────
╔════[PC]════╗
║ [00000004] ║
╚════════════╝
╔═════════════[FORWARDING AND HAZARD UNITS]══════════════╗
║ No action. ║
╚════════════════════════════════════════════════════════╝
╔════════════════════╦═══════════[PIPELINE REGISTERS]══════════╦════════════════════╗
║ [IF/ID] ║ [ID/EX] ║ [EX/MEM] ║ [MEM/WB] ║
║════════════════════╬════════════════════╬════════════════════╬════════════════════║
║ ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║
║ ║ REG_WRITE=[1] ║ REG_WRITE=[0] ║ REG_WRITE=[0] ║
║ ║ BRANCH=[0] ║ BRANCH=[0] ║ ║
║ ║ MEM_READ=[0] ║ MEM_READ=[0] ║ ║
║ ║ MEM_WRITE=[0] ║ MEM_WRITE=[0] ║ ║
║ ║ REG_DST=[1] ║ ║ ║
║ ║ ALU_SRC=[0] ║ ║ ║
║ ║ ALU_OP=[10] ║ ║ ║
╠════════════════════╬════════════════════╬════════════════════╬════════════════════╣
║ NPC=[00000004] ║ NPC=[00000000] ║ BR_TGT=[00000000] ║ ║
║ ║ A=[00000000] ║ ZERO=[00000001] ║ LMD=[00000000] ║
║ IR=[2008000F] ║ B=[00000000] ║ ALU_OUT=[00000000] ║ ║
║ ║ RT=[00000000] ║ B=[00000000] ║ ALU_OUT=[00000000] ║
║ ║ RD=[00000000] ║ RD=[00000000] ║ RD=[00000000] ║
║ ║ IMM=[00000000] ║ ║ ║
║ ║ RS=[00000000] ║ ║ ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔════════════════════╦═══════════════[REGISTERS]═══════════════╦════════════════════╗
║ $00[ 0]=[00000000] ║ $t0[ 8]=[00000000] ║ $s0[16]=[00000000] ║ $t8[24]=[00000000] ║
║ $at[ 1]=[00000000] ║ $t1[ 9]=[00000000] ║ $s1[17]=[00000000] ║ $t9[25]=[00000000] ║
║ $v0[ 2]=[00000000] ║ $t2[10]=[00000000] ║ $s2[18]=[00000000] ║ $k0[26]=[00000000] ║
║ $v1[ 3]=[00000000] ║ $t3[11]=[00000000] ║ $s3[19]=[00000000] ║ $k1[27]=[00000000] ║
║ $a0[ 4]=[00000000] ║ $t4[12]=[00000000] ║ $s4[20]=[00000000] ║ $gp[28]=[00000000] ║
║ $a1[ 5]=[00000000] ║ $t5[13]=[00000000] ║ $s5[21]=[00000000] ║ $sp[29]=[00000000] ║
║ $a2[ 6]=[00000000] ║ $t6[14]=[00000000] ║ $s6[22]=[00000000] ║ $fp[30]=[00000000] ║
║ $a3[ 7]=[00000000] ║ $t7[15]=[00000000] ║ $s7[23]=[00000000] ║ $ra[31]=[00000000] ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔══════════════════╦═══════════════[MEMORY]══════════════╦══════════════════╗
║ [000]=[00000000] ║ [016]=[00000000] ║ [032]=[00000000] ║ [048]=[00000000] ║
║ [004]=[00000000] ║ [020]=[00000000] ║ [036]=[00000000] ║ [052]=[00000000] ║
║ [008]=[00000000] ║ [024]=[00000000] ║ [040]=[00000000] ║ [056]=[00000000] ║
║ [012]=[00000000] ║ [028]=[00000000] ║ [044]=[00000000] ║ [060]=[00000000] ║
╚══════════════════╩══════════════════╩══════════════════╩══════════════════╝
────────────────────────────────────────────────────────────────────────────────────
| step: [ENTER] | end: [E|Q] | q
────────────────────────────────────── CLK #1 ──────────────────────────────────────
> Stage IF: #4 = [sw $t0, 0($zero)].
> Stage ID: #0 = [addi $t0, $zero, 15].
────────────────────────────────────────────────────────────────────────────────────
╔════[PC]════╗
║ [00000008] ║
╚════════════╝
╔═════════════[FORWARDING AND HAZARD UNITS]══════════════╗
║ No action. ║
╚════════════════════════════════════════════════════════╝
╔════════════════════╦═══════════[PIPELINE REGISTERS]══════════╦════════════════════╗
║ [IF/ID] ║ [ID/EX] ║ [EX/MEM] ║ [MEM/WB] ║
║════════════════════╬════════════════════╬════════════════════╬════════════════════║
║ ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║
║ ║ REG_WRITE=[1] ║ REG_WRITE=[1] ║ REG_WRITE=[0] ║
║ ║ BRANCH=[0] ║ BRANCH=[0] ║ ║
║ ║ MEM_READ=[0] ║ MEM_READ=[0] ║ ║
║ ║ MEM_WRITE=[0] ║ MEM_WRITE=[0] ║ ║
║ ║ REG_DST=[0] ║ ║ ║
║ ║ ALU_SRC=[1] ║ ║ ║
║ ║ ALU_OP=[00] ║ ║ ║
╠════════════════════╬════════════════════╬════════════════════╬════════════════════╣
║ NPC=[00000008] ║ NPC=[00000004] ║ BR_TGT=[00000000] ║ ║
║ ║ A=[00000000] ║ ZERO=[00000001] ║ LMD=[00000000] ║
║ IR=[AC080000] ║ B=[00000000] ║ ALU_OUT=[00000000] ║ ║
║ ║ RT=[00000008] ║ B=[00000000] ║ ALU_OUT=[00000000] ║
║ ║ RD=[00000000] ║ RD=[00000000] ║ RD=[00000000] ║
║ ║ IMM=[0000000F] ║ ║ ║
║ ║ RS=[00000000] ║ ║ ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔════════════════════╦═══════════════[REGISTERS]═══════════════╦════════════════════╗
║ $00[ 0]=[00000000] ║ $t0[ 8]=[00000000] ║ $s0[16]=[00000000] ║ $t8[24]=[00000000] ║
║ $at[ 1]=[00000000] ║ $t1[ 9]=[00000000] ║ $s1[17]=[00000000] ║ $t9[25]=[00000000] ║
║ $v0[ 2]=[00000000] ║ $t2[10]=[00000000] ║ $s2[18]=[00000000] ║ $k0[26]=[00000000] ║
║ $v1[ 3]=[00000000] ║ $t3[11]=[00000000] ║ $s3[19]=[00000000] ║ $k1[27]=[00000000] ║
║ $a0[ 4]=[00000000] ║ $t4[12]=[00000000] ║ $s4[20]=[00000000] ║ $gp[28]=[00000000] ║
║ $a1[ 5]=[00000000] ║ $t5[13]=[00000000] ║ $s5[21]=[00000000] ║ $sp[29]=[00000000] ║
║ $a2[ 6]=[00000000] ║ $t6[14]=[00000000] ║ $s6[22]=[00000000] ║ $fp[30]=[00000000] ║
║ $a3[ 7]=[00000000] ║ $t7[15]=[00000000] ║ $s7[23]=[00000000] ║ $ra[31]=[00000000] ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔══════════════════╦═══════════════[MEMORY]══════════════╦══════════════════╗
║ [000]=[00000000] ║ [016]=[00000000] ║ [032]=[00000000] ║ [048]=[00000000] ║
║ [004]=[00000000] ║ [020]=[00000000] ║ [036]=[00000000] ║ [052]=[00000000] ║
║ [008]=[00000000] ║ [024]=[00000000] ║ [040]=[00000000] ║ [056]=[00000000] ║
║ [012]=[00000000] ║ [028]=[00000000] ║ [044]=[00000000] ║ [060]=[00000000] ║
╚══════════════════╩══════════════════╩══════════════════╩══════════════════╝
────────────────────────────────────────────────────────────────────────────────────
────────────────────────────────────── CLK #2 ──────────────────────────────────────
> Stage IF: #8 = [addi $t1, $zero, 240].
> Stage ID: #4 = [sw $t0, 0($zero)].
> Stage EX: #0 = [addi $t0, $zero, 15].
────────────────────────────────────────────────────────────────────────────────────
╔════[PC]════╗
║ [0000000C] ║
╚════════════╝
╔═════════════[FORWARDING AND HAZARD UNITS]══════════════╗
║ No action. ║
╚════════════════════════════════════════════════════════╝
╔════════════════════╦═══════════[PIPELINE REGISTERS]══════════╦════════════════════╗
║ [IF/ID] ║ [ID/EX] ║ [EX/MEM] ║ [MEM/WB] ║
║════════════════════╬════════════════════╬════════════════════╬════════════════════║
║ ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║
║ ║ REG_WRITE=[0] ║ REG_WRITE=[1] ║ REG_WRITE=[1] ║
║ ║ BRANCH=[0] ║ BRANCH=[0] ║ ║
║ ║ MEM_READ=[0] ║ MEM_READ=[0] ║ ║
║ ║ MEM_WRITE=[1] ║ MEM_WRITE=[0] ║ ║
║ ║ REG_DST=[0] ║ ║ ║
║ ║ ALU_SRC=[1] ║ ║ ║
║ ║ ALU_OP=[00] ║ ║ ║
╠════════════════════╬════════════════════╬════════════════════╬════════════════════╣
║ NPC=[0000000C] ║ NPC=[00000008] ║ BR_TGT=[00000040] ║ ║
║ ║ A=[00000000] ║ ZERO=[00000000] ║ LMD=[00000000] ║
║ IR=[200900F0] ║ B=[00000000] ║ ALU_OUT=[0000000F] ║ ║
║ ║ RT=[00000008] ║ B=[00000000] ║ ALU_OUT=[00000000] ║
║ ║ RD=[00000000] ║ RD=[00000008] ║ RD=[00000000] ║
║ ║ IMM=[00000000] ║ ║ ║
║ ║ RS=[00000000] ║ ║ ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔════════════════════╦═══════════════[REGISTERS]═══════════════╦════════════════════╗
║ $00[ 0]=[00000000] ║ $t0[ 8]=[00000000] ║ $s0[16]=[00000000] ║ $t8[24]=[00000000] ║
║ $at[ 1]=[00000000] ║ $t1[ 9]=[00000000] ║ $s1[17]=[00000000] ║ $t9[25]=[00000000] ║
║ $v0[ 2]=[00000000] ║ $t2[10]=[00000000] ║ $s2[18]=[00000000] ║ $k0[26]=[00000000] ║
║ $v1[ 3]=[00000000] ║ $t3[11]=[00000000] ║ $s3[19]=[00000000] ║ $k1[27]=[00000000] ║
║ $a0[ 4]=[00000000] ║ $t4[12]=[00000000] ║ $s4[20]=[00000000] ║ $gp[28]=[00000000] ║
║ $a1[ 5]=[00000000] ║ $t5[13]=[00000000] ║ $s5[21]=[00000000] ║ $sp[29]=[00000000] ║
║ $a2[ 6]=[00000000] ║ $t6[14]=[00000000] ║ $s6[22]=[00000000] ║ $fp[30]=[00000000] ║
║ $a3[ 7]=[00000000] ║ $t7[15]=[00000000] ║ $s7[23]=[00000000] ║ $ra[31]=[00000000] ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔══════════════════╦═══════════════[MEMORY]══════════════╦══════════════════╗
║ [000]=[00000000] ║ [016]=[00000000] ║ [032]=[00000000] ║ [048]=[00000000] ║
║ [004]=[00000000] ║ [020]=[00000000] ║ [036]=[00000000] ║ [052]=[00000000] ║
║ [008]=[00000000] ║ [024]=[00000000] ║ [040]=[00000000] ║ [056]=[00000000] ║
║ [012]=[00000000] ║ [028]=[00000000] ║ [044]=[00000000] ║ [060]=[00000000] ║
╚══════════════════╩══════════════════╩══════════════════╩══════════════════╝
────────────────────────────────────────────────────────────────────────────────────
────────────────────────────────────── CLK #3 ──────────────────────────────────────
> Stage IF: #12 = [sw $t1, 4($zero)].
> Stage ID: #8 = [addi $t1, $zero, 240].
> Stage EX: #4 = [sw $t0, 0($zero)].
> Stage MEM: #0 = [addi $t0, $zero, 15] (idle).
────────────────────────────────────────────────────────────────────────────────────
╔════[PC]════╗
║ [00000010] ║
╚════════════╝
╔═════════════[FORWARDING AND HAZARD UNITS]══════════════╗
║ FWD_B=2 (EX/MEM.ALU_OUT -> Mux @ aluB and EX/MEM.B)... ║
╚════════════════════════════════════════════════════════╝
╔════════════════════╦═══════════[PIPELINE REGISTERS]══════════╦════════════════════╗
║ [IF/ID] ║ [ID/EX] ║ [EX/MEM] ║ [MEM/WB] ║
║════════════════════╬════════════════════╬════════════════════╬════════════════════║
║ ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║
║ ║ REG_WRITE=[1] ║ REG_WRITE=[0] ║ REG_WRITE=[1] ║
║ ║ BRANCH=[0] ║ BRANCH=[0] ║ ║
║ ║ MEM_READ=[0] ║ MEM_READ=[0] ║ ║
║ ║ MEM_WRITE=[0] ║ MEM_WRITE=[1] ║ ║
║ ║ REG_DST=[0] ║ ║ ║
║ ║ ALU_SRC=[1] ║ ║ ║
║ ║ ALU_OP=[00] ║ ║ ║
╠════════════════════╬════════════════════╬════════════════════╬════════════════════╣
║ NPC=[00000010] ║ NPC=[0000000C] ║ BR_TGT=[00000008] ║ ║
║ ║ A=[00000000] ║ ZERO=[00000001] ║ LMD=[00000000] ║
║ IR=[AC090004] ║ B=[00000000] ║ ALU_OUT=[00000000] ║ ║
║ ║ RT=[00000009] ║ B=[0000000F] ║ ALU_OUT=[0000000F] ║
║ ║ RD=[00000000] ║ RD=[00000008] ║ RD=[00000008] ║
║ ║ IMM=[000000F0] ║ ║ ║
║ ║ RS=[00000000] ║ ║ ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔════════════════════╦═══════════════[REGISTERS]═══════════════╦════════════════════╗
║ $00[ 0]=[00000000] ║ $t0[ 8]=[00000000] ║ $s0[16]=[00000000] ║ $t8[24]=[00000000] ║
║ $at[ 1]=[00000000] ║ $t1[ 9]=[00000000] ║ $s1[17]=[00000000] ║ $t9[25]=[00000000] ║
║ $v0[ 2]=[00000000] ║ $t2[10]=[00000000] ║ $s2[18]=[00000000] ║ $k0[26]=[00000000] ║
║ $v1[ 3]=[00000000] ║ $t3[11]=[00000000] ║ $s3[19]=[00000000] ║ $k1[27]=[00000000] ║
║ $a0[ 4]=[00000000] ║ $t4[12]=[00000000] ║ $s4[20]=[00000000] ║ $gp[28]=[00000000] ║
║ $a1[ 5]=[00000000] ║ $t5[13]=[00000000] ║ $s5[21]=[00000000] ║ $sp[29]=[00000000] ║
║ $a2[ 6]=[00000000] ║ $t6[14]=[00000000] ║ $s6[22]=[00000000] ║ $fp[30]=[00000000] ║
║ $a3[ 7]=[00000000] ║ $t7[15]=[00000000] ║ $s7[23]=[00000000] ║ $ra[31]=[00000000] ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔══════════════════╦═══════════════[MEMORY]══════════════╦══════════════════╗
║ [000]=[00000000] ║ [016]=[00000000] ║ [032]=[00000000] ║ [048]=[00000000] ║
║ [004]=[00000000] ║ [020]=[00000000] ║ [036]=[00000000] ║ [052]=[00000000] ║
║ [008]=[00000000] ║ [024]=[00000000] ║ [040]=[00000000] ║ [056]=[00000000] ║
║ [012]=[00000000] ║ [028]=[00000000] ║ [044]=[00000000] ║ [060]=[00000000] ║
╚══════════════════╩══════════════════╩══════════════════╩══════════════════╝
────────────────────────────────────────────────────────────────────────────────────
────────────────────────────────────── CLK #4 ──────────────────────────────────────
> Stage IF: #16 = [add $t3, $t0, $t1].
> Stage ID: #12 = [sw $t1, 4($zero)].
> Stage EX: #8 = [addi $t1, $zero, 240].
> Stage MEM: #4 = [sw $t0, 0($zero)].
> Stage WB: #0 = [addi $t0, $zero, 15].
────────────────────────────────────────────────────────────────────────────────────
╔════[PC]════╗
║ [00000014] ║
╚════════════╝
╔═════════════[FORWARDING AND HAZARD UNITS]══════════════╗
║ No action. ║
╚════════════════════════════════════════════════════════╝
╔════════════════════╦═══════════[PIPELINE REGISTERS]══════════╦════════════════════╗
║ [IF/ID] ║ [ID/EX] ║ [EX/MEM] ║ [MEM/WB] ║
║════════════════════╬════════════════════╬════════════════════╬════════════════════║
║ ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║
║ ║ REG_WRITE=[0] ║ REG_WRITE=[1] ║ REG_WRITE=[0] ║
║ ║ BRANCH=[0] ║ BRANCH=[0] ║ ║
║ ║ MEM_READ=[0] ║ MEM_READ=[0] ║ ║
║ ║ MEM_WRITE=[1] ║ MEM_WRITE=[0] ║ ║
║ ║ REG_DST=[0] ║ ║ ║
║ ║ ALU_SRC=[1] ║ ║ ║
║ ║ ALU_OP=[00] ║ ║ ║
╠════════════════════╬════════════════════╬════════════════════╬════════════════════╣
║ NPC=[00000014] ║ NPC=[00000010] ║ BR_TGT=[000003CC] ║ ║
║ ║ A=[00000000] ║ ZERO=[00000000] ║ LMD=[00000000] ║
║ IR=[01095820] ║ B=[00000000] ║ ALU_OUT=[000000F0] ║ ║
║ ║ RT=[00000009] ║ B=[00000000] ║ ALU_OUT=[00000000] ║
║ ║ RD=[00000000] ║ RD=[00000009] ║ RD=[00000008] ║
║ ║ IMM=[00000004] ║ ║ ║
║ ║ RS=[00000000] ║ ║ ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔════════════════════╦═══════════════[REGISTERS]═══════════════╦════════════════════╗
║ $00[ 0]=[00000000] ║ $t0[ 8]=[0000000F] ║ $s0[16]=[00000000] ║ $t8[24]=[00000000] ║
║ $at[ 1]=[00000000] ║ $t1[ 9]=[00000000] ║ $s1[17]=[00000000] ║ $t9[25]=[00000000] ║
║ $v0[ 2]=[00000000] ║ $t2[10]=[00000000] ║ $s2[18]=[00000000] ║ $k0[26]=[00000000] ║
║ $v1[ 3]=[00000000] ║ $t3[11]=[00000000] ║ $s3[19]=[00000000] ║ $k1[27]=[00000000] ║
║ $a0[ 4]=[00000000] ║ $t4[12]=[00000000] ║ $s4[20]=[00000000] ║ $gp[28]=[00000000] ║
║ $a1[ 5]=[00000000] ║ $t5[13]=[00000000] ║ $s5[21]=[00000000] ║ $sp[29]=[00000000] ║
║ $a2[ 6]=[00000000] ║ $t6[14]=[00000000] ║ $s6[22]=[00000000] ║ $fp[30]=[00000000] ║
║ $a3[ 7]=[00000000] ║ $t7[15]=[00000000] ║ $s7[23]=[00000000] ║ $ra[31]=[00000000] ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔══════════════════╦═══════════════[MEMORY]══════════════╦══════════════════╗
║ [000]=[0000000F] ║ [016]=[00000000] ║ [032]=[00000000] ║ [048]=[00000000] ║
║ [004]=[00000000] ║ [020]=[00000000] ║ [036]=[00000000] ║ [052]=[00000000] ║
║ [008]=[00000000] ║ [024]=[00000000] ║ [040]=[00000000] ║ [056]=[00000000] ║
║ [012]=[00000000] ║ [028]=[00000000] ║ [044]=[00000000] ║ [060]=[00000000] ║
╚══════════════════╩══════════════════╩══════════════════╩══════════════════╝
────────────────────────────────────────────────────────────────────────────────────
────────────────────────────────────── CLK #5 ──────────────────────────────────────
> Stage IF: #20 = [lw $t4, 4($zero)].
> Stage ID: #16 = [add $t3, $t0, $t1].
> Stage EX: #12 = [sw $t1, 4($zero)].
> Stage MEM: #8 = [addi $t1, $zero, 240] (idle).
> Stage WB: #4 = [sw $t0, 0($zero)] (idle).
────────────────────────────────────────────────────────────────────────────────────
╔════[PC]════╗
║ [00000018] ║
╚════════════╝
╔═════════════[FORWARDING AND HAZARD UNITS]══════════════╗
║ FWD_B=2 (EX/MEM.ALU_OUT -> Mux @ aluB and EX/MEM.B)... ║
╚════════════════════════════════════════════════════════╝
╔════════════════════╦═══════════[PIPELINE REGISTERS]══════════╦════════════════════╗
║ [IF/ID] ║ [ID/EX] ║ [EX/MEM] ║ [MEM/WB] ║
║════════════════════╬════════════════════╬════════════════════╬════════════════════║
║ ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║
║ ║ REG_WRITE=[1] ║ REG_WRITE=[0] ║ REG_WRITE=[1] ║
║ ║ BRANCH=[0] ║ BRANCH=[0] ║ ║
║ ║ MEM_READ=[0] ║ MEM_READ=[0] ║ ║
║ ║ MEM_WRITE=[0] ║ MEM_WRITE=[1] ║ ║
║ ║ REG_DST=[1] ║ ║ ║
║ ║ ALU_SRC=[0] ║ ║ ║
║ ║ ALU_OP=[10] ║ ║ ║
╠════════════════════╬════════════════════╬════════════════════╬════════════════════╣
║ NPC=[00000018] ║ NPC=[00000014] ║ BR_TGT=[00000020] ║ ║
║ ║ A=[0000000F] ║ ZERO=[00000000] ║ LMD=[00000000] ║
║ IR=[8C0C0004] ║ B=[00000000] ║ ALU_OUT=[00000004] ║ ║
║ ║ RT=[00000009] ║ B=[000000F0] ║ ALU_OUT=[000000F0] ║
║ ║ RD=[0000000B] ║ RD=[00000009] ║ RD=[00000009] ║
║ ║ IMM=[00005820] ║ ║ ║
║ ║ RS=[00000008] ║ ║ ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔════════════════════╦═══════════════[REGISTERS]═══════════════╦════════════════════╗
║ $00[ 0]=[00000000] ║ $t0[ 8]=[0000000F] ║ $s0[16]=[00000000] ║ $t8[24]=[00000000] ║
║ $at[ 1]=[00000000] ║ $t1[ 9]=[00000000] ║ $s1[17]=[00000000] ║ $t9[25]=[00000000] ║
║ $v0[ 2]=[00000000] ║ $t2[10]=[00000000] ║ $s2[18]=[00000000] ║ $k0[26]=[00000000] ║
║ $v1[ 3]=[00000000] ║ $t3[11]=[00000000] ║ $s3[19]=[00000000] ║ $k1[27]=[00000000] ║
║ $a0[ 4]=[00000000] ║ $t4[12]=[00000000] ║ $s4[20]=[00000000] ║ $gp[28]=[00000000] ║
║ $a1[ 5]=[00000000] ║ $t5[13]=[00000000] ║ $s5[21]=[00000000] ║ $sp[29]=[00000000] ║
║ $a2[ 6]=[00000000] ║ $t6[14]=[00000000] ║ $s6[22]=[00000000] ║ $fp[30]=[00000000] ║
║ $a3[ 7]=[00000000] ║ $t7[15]=[00000000] ║ $s7[23]=[00000000] ║ $ra[31]=[00000000] ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔══════════════════╦═══════════════[MEMORY]══════════════╦══════════════════╗
║ [000]=[0000000F] ║ [016]=[00000000] ║ [032]=[00000000] ║ [048]=[00000000] ║
║ [004]=[00000000] ║ [020]=[00000000] ║ [036]=[00000000] ║ [052]=[00000000] ║
║ [008]=[00000000] ║ [024]=[00000000] ║ [040]=[00000000] ║ [056]=[00000000] ║
║ [012]=[00000000] ║ [028]=[00000000] ║ [044]=[00000000] ║ [060]=[00000000] ║
╚══════════════════╩══════════════════╩══════════════════╩══════════════════╝
────────────────────────────────────────────────────────────────────────────────────
────────────────────────────────────── CLK #6 ──────────────────────────────────────
> Stage ID: #20 = [lw $t4, 4($zero)].
> Stage EX: #16 = [add $t3, $t0, $t1].
> Stage MEM: #12 = [sw $t1, 4($zero)].
> Stage WB: #8 = [addi $t1, $zero, 240].
────────────────────────────────────────────────────────────────────────────────────
╔════[PC]════╗
║ [00000018] ║
╚════════════╝
╔═════════════[FORWARDING AND HAZARD UNITS]══════════════╗
║ Stalling (blocking write on PC and IF/ID)... ║
║ FWD_B=1 (MEM/WB.ALU_OUT -> Mux @ aluB and EX/MEM.B)... ║
╚════════════════════════════════════════════════════════╝
╔════════════════════╦═══════════[PIPELINE REGISTERS]══════════╦════════════════════╗
║ [IF/ID] ║ [ID/EX] ║ [EX/MEM] ║ [MEM/WB] ║
║════════════════════╬════════════════════╬════════════════════╬════════════════════║
║ ║ MEM_TO_REG=[1] ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║
║ ║ REG_WRITE=[1] ║ REG_WRITE=[1] ║ REG_WRITE=[0] ║
║ ║ BRANCH=[0] ║ BRANCH=[0] ║ ║
║ ║ MEM_READ=[1] ║ MEM_READ=[0] ║ ║
║ ║ MEM_WRITE=[0] ║ MEM_WRITE=[0] ║ ║
║ ║ REG_DST=[0] ║ ║ ║
║ ║ ALU_SRC=[1] ║ ║ ║
║ ║ ALU_OP=[00] ║ ║ ║
╠════════════════════╬════════════════════╬════════════════════╬════════════════════╣
║ NPC=[00000018] ║ NPC=[00000018] ║ BR_TGT=[00016094] ║ ║
║ ║ A=[00000000] ║ ZERO=[00000000] ║ LMD=[00000000] ║
║ IR=[8C0C0004] ║ B=[00000000] ║ ALU_OUT=[000000FF] ║ ║
║ ║ RT=[0000000C] ║ B=[000000F0] ║ ALU_OUT=[00000004] ║
║ ║ RD=[00000000] ║ RD=[0000000B] ║ RD=[00000009] ║
║ ║ IMM=[00000004] ║ ║ ║
║ ║ RS=[00000000] ║ ║ ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔════════════════════╦═══════════════[REGISTERS]═══════════════╦════════════════════╗
║ $00[ 0]=[00000000] ║ $t0[ 8]=[0000000F] ║ $s0[16]=[00000000] ║ $t8[24]=[00000000] ║
║ $at[ 1]=[00000000] ║ $t1[ 9]=[000000F0] ║ $s1[17]=[00000000] ║ $t9[25]=[00000000] ║
║ $v0[ 2]=[00000000] ║ $t2[10]=[00000000] ║ $s2[18]=[00000000] ║ $k0[26]=[00000000] ║
║ $v1[ 3]=[00000000] ║ $t3[11]=[00000000] ║ $s3[19]=[00000000] ║ $k1[27]=[00000000] ║
║ $a0[ 4]=[00000000] ║ $t4[12]=[00000000] ║ $s4[20]=[00000000] ║ $gp[28]=[00000000] ║
║ $a1[ 5]=[00000000] ║ $t5[13]=[00000000] ║ $s5[21]=[00000000] ║ $sp[29]=[00000000] ║
║ $a2[ 6]=[00000000] ║ $t6[14]=[00000000] ║ $s6[22]=[00000000] ║ $fp[30]=[00000000] ║
║ $a3[ 7]=[00000000] ║ $t7[15]=[00000000] ║ $s7[23]=[00000000] ║ $ra[31]=[00000000] ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔══════════════════╦═══════════════[MEMORY]══════════════╦══════════════════╗
║ [000]=[0000000F] ║ [016]=[00000000] ║ [032]=[00000000] ║ [048]=[00000000] ║
║ [004]=[000000F0] ║ [020]=[00000000] ║ [036]=[00000000] ║ [052]=[00000000] ║
║ [008]=[00000000] ║ [024]=[00000000] ║ [040]=[00000000] ║ [056]=[00000000] ║
║ [012]=[00000000] ║ [028]=[00000000] ║ [044]=[00000000] ║ [060]=[00000000] ║
╚══════════════════╩══════════════════╩══════════════════╩══════════════════╝
────────────────────────────────────────────────────────────────────────────────────
────────────────────────────────────── CLK #7 ──────────────────────────────────────
> Stage IF: #24 = [mult $t5, $t4, $t3].
> Stage EX: #20 = [lw $t4, 4($zero)].
> Stage MEM: #16 = [add $t3, $t0, $t1] (idle).
> Stage WB: #12 = [sw $t1, 4($zero)] (idle).
────────────────────────────────────────────────────────────────────────────────────
╔════[PC]════╗
║ [0000001C] ║
╚════════════╝
╔═════════════[FORWARDING AND HAZARD UNITS]══════════════╗
║ No action. ║
╚════════════════════════════════════════════════════════╝
╔════════════════════╦═══════════[PIPELINE REGISTERS]══════════╦════════════════════╗
║ [IF/ID] ║ [ID/EX] ║ [EX/MEM] ║ [MEM/WB] ║
║════════════════════╬════════════════════╬════════════════════╬════════════════════║
║ ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[1] ║ MEM_TO_REG=[0] ║
║ ║ REG_WRITE=[0] ║ REG_WRITE=[1] ║ REG_WRITE=[1] ║
║ ║ BRANCH=[0] ║ BRANCH=[0] ║ ║
║ ║ MEM_READ=[0] ║ MEM_READ=[1] ║ ║
║ ║ MEM_WRITE=[0] ║ MEM_WRITE=[0] ║ ║
║ ║ REG_DST=[0] ║ ║ ║
║ ║ ALU_SRC=[0] ║ ║ ║
║ ║ ALU_OP=[00] ║ ║ ║
╠════════════════════╬════════════════════╬════════════════════╬════════════════════╣
║ NPC=[0000001C] ║ NPC=[00000018] ║ BR_TGT=[00000028] ║ ║
║ ║ A=[00000000] ║ ZERO=[00000000] ║ LMD=[00000000] ║
║ IR=[018B6818] ║ B=[00000000] ║ ALU_OUT=[00000004] ║ ║
║ ║ RT=[0000000C] ║ B=[00000000] ║ ALU_OUT=[000000FF] ║
║ ║ RD=[00000000] ║ RD=[0000000C] ║ RD=[0000000B] ║
║ ║ IMM=[00000004] ║ ║ ║
║ ║ RS=[00000000] ║ ║ ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔════════════════════╦═══════════════[REGISTERS]═══════════════╦════════════════════╗
║ $00[ 0]=[00000000] ║ $t0[ 8]=[0000000F] ║ $s0[16]=[00000000] ║ $t8[24]=[00000000] ║
║ $at[ 1]=[00000000] ║ $t1[ 9]=[000000F0] ║ $s1[17]=[00000000] ║ $t9[25]=[00000000] ║
║ $v0[ 2]=[00000000] ║ $t2[10]=[00000000] ║ $s2[18]=[00000000] ║ $k0[26]=[00000000] ║
║ $v1[ 3]=[00000000] ║ $t3[11]=[00000000] ║ $s3[19]=[00000000] ║ $k1[27]=[00000000] ║
║ $a0[ 4]=[00000000] ║ $t4[12]=[00000000] ║ $s4[20]=[00000000] ║ $gp[28]=[00000000] ║
║ $a1[ 5]=[00000000] ║ $t5[13]=[00000000] ║ $s5[21]=[00000000] ║ $sp[29]=[00000000] ║
║ $a2[ 6]=[00000000] ║ $t6[14]=[00000000] ║ $s6[22]=[00000000] ║ $fp[30]=[00000000] ║
║ $a3[ 7]=[00000000] ║ $t7[15]=[00000000] ║ $s7[23]=[00000000] ║ $ra[31]=[00000000] ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔══════════════════╦═══════════════[MEMORY]══════════════╦══════════════════╗
║ [000]=[0000000F] ║ [016]=[00000000] ║ [032]=[00000000] ║ [048]=[00000000] ║
║ [004]=[000000F0] ║ [020]=[00000000] ║ [036]=[00000000] ║ [052]=[00000000] ║
║ [008]=[00000000] ║ [024]=[00000000] ║ [040]=[00000000] ║ [056]=[00000000] ║
║ [012]=[00000000] ║ [028]=[00000000] ║ [044]=[00000000] ║ [060]=[00000000] ║
╚══════════════════╩══════════════════╩══════════════════╩══════════════════╝
────────────────────────────────────────────────────────────────────────────────────
────────────────────────────────────── CLK #8 ──────────────────────────────────────
> Stage IF: #28 = [sw $t5, 8($zero)].
> Stage ID: #24 = [mult $t5, $t4, $t3].
> Stage MEM: #20 = [lw $t4, 4($zero)].
> Stage WB: #16 = [add $t3, $t0, $t1].
────────────────────────────────────────────────────────────────────────────────────
╔════[PC]════╗
║ [00000020] ║
╚════════════╝
╔═════════════[FORWARDING AND HAZARD UNITS]══════════════╗
║ FWD_B=2 (EX/MEM.ALU_OUT -> Mux @ aluB and EX/MEM.B)... ║
╚════════════════════════════════════════════════════════╝
╔════════════════════╦═══════════[PIPELINE REGISTERS]══════════╦════════════════════╗
║ [IF/ID] ║ [ID/EX] ║ [EX/MEM] ║ [MEM/WB] ║
║════════════════════╬════════════════════╬════════════════════╬════════════════════║
║ ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[1] ║
║ ║ REG_WRITE=[1] ║ REG_WRITE=[0] ║ REG_WRITE=[1] ║
║ ║ BRANCH=[0] ║ BRANCH=[0] ║ ║
║ ║ MEM_READ=[0] ║ MEM_READ=[0] ║ ║
║ ║ MEM_WRITE=[0] ║ MEM_WRITE=[0] ║ ║
║ ║ REG_DST=[1] ║ ║ ║
║ ║ ALU_SRC=[0] ║ ║ ║
║ ║ ALU_OP=[10] ║ ║ ║
╠════════════════════╬════════════════════╬════════════════════╬════════════════════╣
║ NPC=[00000020] ║ NPC=[0000001C] ║ BR_TGT=[00000028] ║ ║
║ ║ A=[00000000] ║ ZERO=[00000000] ║ LMD=[000000F0] ║
║ IR=[AC0D0008] ║ B=[000000FF] ║ ALU_OUT=[00000004] ║ ║
║ ║ RT=[0000000B] ║ B=[00000004] ║ ALU_OUT=[00000004] ║
║ ║ RD=[0000000D] ║ RD=[0000000C] ║ RD=[0000000C] ║
║ ║ IMM=[00006818] ║ ║ ║
║ ║ RS=[0000000C] ║ ║ ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔════════════════════╦═══════════════[REGISTERS]═══════════════╦════════════════════╗
║ $00[ 0]=[00000000] ║ $t0[ 8]=[0000000F] ║ $s0[16]=[00000000] ║ $t8[24]=[00000000] ║
║ $at[ 1]=[00000000] ║ $t1[ 9]=[000000F0] ║ $s1[17]=[00000000] ║ $t9[25]=[00000000] ║
║ $v0[ 2]=[00000000] ║ $t2[10]=[00000000] ║ $s2[18]=[00000000] ║ $k0[26]=[00000000] ║
║ $v1[ 3]=[00000000] ║ $t3[11]=[000000FF] ║ $s3[19]=[00000000] ║ $k1[27]=[00000000] ║
║ $a0[ 4]=[00000000] ║ $t4[12]=[00000000] ║ $s4[20]=[00000000] ║ $gp[28]=[00000000] ║
║ $a1[ 5]=[00000000] ║ $t5[13]=[00000000] ║ $s5[21]=[00000000] ║ $sp[29]=[00000000] ║
║ $a2[ 6]=[00000000] ║ $t6[14]=[00000000] ║ $s6[22]=[00000000] ║ $fp[30]=[00000000] ║
║ $a3[ 7]=[00000000] ║ $t7[15]=[00000000] ║ $s7[23]=[00000000] ║ $ra[31]=[00000000] ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔══════════════════╦═══════════════[MEMORY]══════════════╦══════════════════╗
║ [000]=[0000000F] ║ [016]=[00000000] ║ [032]=[00000000] ║ [048]=[00000000] ║
║ [004]=[000000F0] ║ [020]=[00000000] ║ [036]=[00000000] ║ [052]=[00000000] ║
║ [008]=[00000000] ║ [024]=[00000000] ║ [040]=[00000000] ║ [056]=[00000000] ║
║ [012]=[00000000] ║ [028]=[00000000] ║ [044]=[00000000] ║ [060]=[00000000] ║
╚══════════════════╩══════════════════╩══════════════════╩══════════════════╝
────────────────────────────────────────────────────────────────────────────────────
────────────────────────────────────── CLK #9 ──────────────────────────────────────
> Stage IF: #32 = [lw $s0, 8($zero)].
> Stage ID: #28 = [sw $t5, 8($zero)].
> Stage EX: #24 = [mult $t5, $t4, $t3].
> Stage WB: #20 = [lw $t4, 4($zero)].
────────────────────────────────────────────────────────────────────────────────────
╔════[PC]════╗
║ [00000024] ║
╚════════════╝
╔═════════════[FORWARDING AND HAZARD UNITS]══════════════╗
║ FWD_A=1 (MEM/WB.ALU_OUT -> A)... ║
╚════════════════════════════════════════════════════════╝
╔════════════════════╦═══════════[PIPELINE REGISTERS]══════════╦════════════════════╗
║ [IF/ID] ║ [ID/EX] ║ [EX/MEM] ║ [MEM/WB] ║
║════════════════════╬════════════════════╬════════════════════╬════════════════════║
║ ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║
║ ║ REG_WRITE=[0] ║ REG_WRITE=[1] ║ REG_WRITE=[0] ║
║ ║ BRANCH=[0] ║ BRANCH=[0] ║ ║
║ ║ MEM_READ=[0] ║ MEM_READ=[0] ║ ║
║ ║ MEM_WRITE=[1] ║ MEM_WRITE=[0] ║ ║
║ ║ REG_DST=[0] ║ ║ ║
║ ║ ALU_SRC=[1] ║ ║ ║
║ ║ ALU_OP=[00] ║ ║ ║
╠════════════════════╬════════════════════╬════════════════════╬════════════════════╣
║ NPC=[00000024] ║ NPC=[00000020] ║ BR_TGT=[0001A07C] ║ ║
║ ║ A=[00000000] ║ ZERO=[00000000] ║ LMD=[000000F0] ║
║ IR=[8C100008] ║ B=[00000000] ║ ALU_OUT=[0000EF10] ║ ║
║ ║ RT=[0000000D] ║ B=[000000FF] ║ ALU_OUT=[00000004] ║
║ ║ RD=[00000000] ║ RD=[0000000D] ║ RD=[0000000C] ║
║ ║ IMM=[00000008] ║ ║ ║
║ ║ RS=[00000000] ║ ║ ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔════════════════════╦═══════════════[REGISTERS]═══════════════╦════════════════════╗
║ $00[ 0]=[00000000] ║ $t0[ 8]=[0000000F] ║ $s0[16]=[00000000] ║ $t8[24]=[00000000] ║
║ $at[ 1]=[00000000] ║ $t1[ 9]=[000000F0] ║ $s1[17]=[00000000] ║ $t9[25]=[00000000] ║
║ $v0[ 2]=[00000000] ║ $t2[10]=[00000000] ║ $s2[18]=[00000000] ║ $k0[26]=[00000000] ║
║ $v1[ 3]=[00000000] ║ $t3[11]=[000000FF] ║ $s3[19]=[00000000] ║ $k1[27]=[00000000] ║
║ $a0[ 4]=[00000000] ║ $t4[12]=[000000F0] ║ $s4[20]=[00000000] ║ $gp[28]=[00000000] ║
║ $a1[ 5]=[00000000] ║ $t5[13]=[00000000] ║ $s5[21]=[00000000] ║ $sp[29]=[00000000] ║
║ $a2[ 6]=[00000000] ║ $t6[14]=[00000000] ║ $s6[22]=[00000000] ║ $fp[30]=[00000000] ║
║ $a3[ 7]=[00000000] ║ $t7[15]=[00000000] ║ $s7[23]=[00000000] ║ $ra[31]=[00000000] ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔══════════════════╦═══════════════[MEMORY]══════════════╦══════════════════╗
║ [000]=[0000000F] ║ [016]=[00000000] ║ [032]=[00000000] ║ [048]=[00000000] ║
║ [004]=[000000F0] ║ [020]=[00000000] ║ [036]=[00000000] ║ [052]=[00000000] ║
║ [008]=[00000000] ║ [024]=[00000000] ║ [040]=[00000000] ║ [056]=[00000000] ║
║ [012]=[00000000] ║ [028]=[00000000] ║ [044]=[00000000] ║ [060]=[00000000] ║
╚══════════════════╩══════════════════╩══════════════════╩══════════════════╝
────────────────────────────────────────────────────────────────────────────────────
────────────────────────────────────── CLK #10 ──────────────────────────────────────
> Stage ID: #32 = [lw $s0, 8($zero)].
> Stage EX: #28 = [sw $t5, 8($zero)].
> Stage MEM: #24 = [mult $t5, $t4, $t3] (idle).
─────────────────────────────────────────────────────────────────────────────────────
╔════[PC]════╗
║ [00000024] ║
╚════════════╝
╔═════════════[FORWARDING AND HAZARD UNITS]══════════════╗
║ Stalling (blocking write on PC and IF/ID)... ║
║ FWD_B=2 (EX/MEM.ALU_OUT -> Mux @ aluB and EX/MEM.B)... ║
╚════════════════════════════════════════════════════════╝
╔════════════════════╦═══════════[PIPELINE REGISTERS]══════════╦════════════════════╗
║ [IF/ID] ║ [ID/EX] ║ [EX/MEM] ║ [MEM/WB] ║
║════════════════════╬════════════════════╬════════════════════╬════════════════════║
║ ║ MEM_TO_REG=[1] ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║
║ ║ REG_WRITE=[1] ║ REG_WRITE=[0] ║ REG_WRITE=[1] ║
║ ║ BRANCH=[0] ║ BRANCH=[0] ║ ║
║ ║ MEM_READ=[1] ║ MEM_READ=[0] ║ ║
║ ║ MEM_WRITE=[0] ║ MEM_WRITE=[1] ║ ║
║ ║ REG_DST=[0] ║ ║ ║
║ ║ ALU_SRC=[1] ║ ║ ║
║ ║ ALU_OP=[00] ║ ║ ║
╠════════════════════╬════════════════════╬════════════════════╬════════════════════╣
║ NPC=[00000024] ║ NPC=[00000024] ║ BR_TGT=[00000040] ║ ║
║ ║ A=[00000000] ║ ZERO=[00000000] ║ LMD=[000000F0] ║
║ IR=[8C100008] ║ B=[00000000] ║ ALU_OUT=[00000008] ║ ║
║ ║ RT=[00000010] ║ B=[0000EF10] ║ ALU_OUT=[0000EF10] ║
║ ║ RD=[00000000] ║ RD=[0000000D] ║ RD=[0000000D] ║
║ ║ IMM=[00000008] ║ ║ ║
║ ║ RS=[00000000] ║ ║ ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔════════════════════╦═══════════════[REGISTERS]═══════════════╦════════════════════╗
║ $00[ 0]=[00000000] ║ $t0[ 8]=[0000000F] ║ $s0[16]=[00000000] ║ $t8[24]=[00000000] ║
║ $at[ 1]=[00000000] ║ $t1[ 9]=[000000F0] ║ $s1[17]=[00000000] ║ $t9[25]=[00000000] ║
║ $v0[ 2]=[00000000] ║ $t2[10]=[00000000] ║ $s2[18]=[00000000] ║ $k0[26]=[00000000] ║
║ $v1[ 3]=[00000000] ║ $t3[11]=[000000FF] ║ $s3[19]=[00000000] ║ $k1[27]=[00000000] ║
║ $a0[ 4]=[00000000] ║ $t4[12]=[000000F0] ║ $s4[20]=[00000000] ║ $gp[28]=[00000000] ║
║ $a1[ 5]=[00000000] ║ $t5[13]=[00000000] ║ $s5[21]=[00000000] ║ $sp[29]=[00000000] ║
║ $a2[ 6]=[00000000] ║ $t6[14]=[00000000] ║ $s6[22]=[00000000] ║ $fp[30]=[00000000] ║
║ $a3[ 7]=[00000000] ║ $t7[15]=[00000000] ║ $s7[23]=[00000000] ║ $ra[31]=[00000000] ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔══════════════════╦═══════════════[MEMORY]══════════════╦══════════════════╗
║ [000]=[0000000F] ║ [016]=[00000000] ║ [032]=[00000000] ║ [048]=[00000000] ║
║ [004]=[000000F0] ║ [020]=[00000000] ║ [036]=[00000000] ║ [052]=[00000000] ║
║ [008]=[00000000] ║ [024]=[00000000] ║ [040]=[00000000] ║ [056]=[00000000] ║
║ [012]=[00000000] ║ [028]=[00000000] ║ [044]=[00000000] ║ [060]=[00000000] ║
╚══════════════════╩══════════════════╩══════════════════╩══════════════════╝
─────────────────────────────────────────────────────────────────────────────────────
────────────────────────────────────── CLK #11 ──────────────────────────────────────
> Stage IF: #36 = [addi $s1, $zero, 61200].
> Stage EX: #32 = [lw $s0, 8($zero)].
> Stage MEM: #28 = [sw $t5, 8($zero)].
> Stage WB: #24 = [mult $t5, $t4, $t3].
─────────────────────────────────────────────────────────────────────────────────────
╔════[PC]════╗
║ [00000028] ║
╚════════════╝
╔═════════════[FORWARDING AND HAZARD UNITS]══════════════╗
║ No action. ║
╚════════════════════════════════════════════════════════╝
╔════════════════════╦═══════════[PIPELINE REGISTERS]══════════╦════════════════════╗
║ [IF/ID] ║ [ID/EX] ║ [EX/MEM] ║ [MEM/WB] ║
║════════════════════╬════════════════════╬════════════════════╬════════════════════║
║ ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[1] ║ MEM_TO_REG=[0] ║
║ ║ REG_WRITE=[0] ║ REG_WRITE=[1] ║ REG_WRITE=[0] ║
║ ║ BRANCH=[0] ║ BRANCH=[0] ║ ║
║ ║ MEM_READ=[0] ║ MEM_READ=[1] ║ ║
║ ║ MEM_WRITE=[0] ║ MEM_WRITE=[0] ║ ║
║ ║ REG_DST=[0] ║ ║ ║
║ ║ ALU_SRC=[0] ║ ║ ║
║ ║ ALU_OP=[00] ║ ║ ║
╠════════════════════╬════════════════════╬════════════════════╬════════════════════╣
║ NPC=[00000028] ║ NPC=[00000024] ║ BR_TGT=[00000044] ║ ║
║ ║ A=[00000000] ║ ZERO=[00000000] ║ LMD=[000000F0] ║
║ IR=[2011EF10] ║ B=[00000000] ║ ALU_OUT=[00000008] ║ ║
║ ║ RT=[00000010] ║ B=[00000000] ║ ALU_OUT=[00000008] ║
║ ║ RD=[00000000] ║ RD=[00000010] ║ RD=[0000000D] ║
║ ║ IMM=[00000008] ║ ║ ║
║ ║ RS=[00000000] ║ ║ ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔════════════════════╦═══════════════[REGISTERS]═══════════════╦════════════════════╗
║ $00[ 0]=[00000000] ║ $t0[ 8]=[0000000F] ║ $s0[16]=[00000000] ║ $t8[24]=[00000000] ║
║ $at[ 1]=[00000000] ║ $t1[ 9]=[000000F0] ║ $s1[17]=[00000000] ║ $t9[25]=[00000000] ║
║ $v0[ 2]=[00000000] ║ $t2[10]=[00000000] ║ $s2[18]=[00000000] ║ $k0[26]=[00000000] ║
║ $v1[ 3]=[00000000] ║ $t3[11]=[000000FF] ║ $s3[19]=[00000000] ║ $k1[27]=[00000000] ║
║ $a0[ 4]=[00000000] ║ $t4[12]=[000000F0] ║ $s4[20]=[00000000] ║ $gp[28]=[00000000] ║
║ $a1[ 5]=[00000000] ║ $t5[13]=[0000EF10] ║ $s5[21]=[00000000] ║ $sp[29]=[00000000] ║
║ $a2[ 6]=[00000000] ║ $t6[14]=[00000000] ║ $s6[22]=[00000000] ║ $fp[30]=[00000000] ║
║ $a3[ 7]=[00000000] ║ $t7[15]=[00000000] ║ $s7[23]=[00000000] ║ $ra[31]=[00000000] ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔══════════════════╦═══════════════[MEMORY]══════════════╦══════════════════╗
║ [000]=[0000000F] ║ [016]=[00000000] ║ [032]=[00000000] ║ [048]=[00000000] ║
║ [004]=[000000F0] ║ [020]=[00000000] ║ [036]=[00000000] ║ [052]=[00000000] ║
║ [008]=[0000EF10] ║ [024]=[00000000] ║ [040]=[00000000] ║ [056]=[00000000] ║
║ [012]=[00000000] ║ [028]=[00000000] ║ [044]=[00000000] ║ [060]=[00000000] ║
╚══════════════════╩══════════════════╩══════════════════╩══════════════════╝
─────────────────────────────────────────────────────────────────────────────────────
────────────────────────────────────── CLK #12 ──────────────────────────────────────
> Stage IF: #40 = [addi $s7, $zero, 1].
> Stage ID: #36 = [addi $s1, $zero, 61200].
> Stage MEM: #32 = [lw $s0, 8($zero)].
> Stage WB: #28 = [sw $t5, 8($zero)] (idle).
─────────────────────────────────────────────────────────────────────────────────────
╔════[PC]════╗
║ [0000002C] ║
╚════════════╝
╔═════════════[FORWARDING AND HAZARD UNITS]══════════════╗
║ FWD_B=2 (EX/MEM.ALU_OUT -> Mux @ aluB and EX/MEM.B)... ║
╚════════════════════════════════════════════════════════╝
╔════════════════════╦═══════════[PIPELINE REGISTERS]══════════╦════════════════════╗
║ [IF/ID] ║ [ID/EX] ║ [EX/MEM] ║ [MEM/WB] ║
║════════════════════╬════════════════════╬════════════════════╬════════════════════║
║ ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[1] ║
║ ║ REG_WRITE=[1] ║ REG_WRITE=[0] ║ REG_WRITE=[1] ║
║ ║ BRANCH=[0] ║ BRANCH=[0] ║ ║
║ ║ MEM_READ=[0] ║ MEM_READ=[0] ║ ║
║ ║ MEM_WRITE=[0] ║ MEM_WRITE=[0] ║ ║
║ ║ REG_DST=[0] ║ ║ ║
║ ║ ALU_SRC=[1] ║ ║ ║
║ ║ ALU_OP=[00] ║ ║ ║
╠════════════════════╬════════════════════╬════════════════════╬════════════════════╣
║ NPC=[0000002C] ║ NPC=[00000028] ║ BR_TGT=[00000044] ║ ║
║ ║ A=[00000000] ║ ZERO=[00000000] ║ LMD=[0000EF10] ║
║ IR=[20170001] ║ B=[00000000] ║ ALU_OUT=[00000008] ║ ║
║ ║ RT=[00000011] ║ B=[00000008] ║ ALU_OUT=[00000008] ║
║ ║ RD=[0000001D] ║ RD=[00000010] ║ RD=[00000010] ║
║ ║ IMM=[0000EF10] ║ ║ ║
║ ║ RS=[00000000] ║ ║ ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔════════════════════╦═══════════════[REGISTERS]═══════════════╦════════════════════╗
║ $00[ 0]=[00000000] ║ $t0[ 8]=[0000000F] ║ $s0[16]=[00000000] ║ $t8[24]=[00000000] ║
║ $at[ 1]=[00000000] ║ $t1[ 9]=[000000F0] ║ $s1[17]=[00000000] ║ $t9[25]=[00000000] ║
║ $v0[ 2]=[00000000] ║ $t2[10]=[00000000] ║ $s2[18]=[00000000] ║ $k0[26]=[00000000] ║
║ $v1[ 3]=[00000000] ║ $t3[11]=[000000FF] ║ $s3[19]=[00000000] ║ $k1[27]=[00000000] ║
║ $a0[ 4]=[00000000] ║ $t4[12]=[000000F0] ║ $s4[20]=[00000000] ║ $gp[28]=[00000000] ║
║ $a1[ 5]=[00000000] ║ $t5[13]=[0000EF10] ║ $s5[21]=[00000000] ║ $sp[29]=[00000000] ║
║ $a2[ 6]=[00000000] ║ $t6[14]=[00000000] ║ $s6[22]=[00000000] ║ $fp[30]=[00000000] ║
║ $a3[ 7]=[00000000] ║ $t7[15]=[00000000] ║ $s7[23]=[00000000] ║ $ra[31]=[00000000] ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔══════════════════╦═══════════════[MEMORY]══════════════╦══════════════════╗
║ [000]=[0000000F] ║ [016]=[00000000] ║ [032]=[00000000] ║ [048]=[00000000] ║
║ [004]=[000000F0] ║ [020]=[00000000] ║ [036]=[00000000] ║ [052]=[00000000] ║
║ [008]=[0000EF10] ║ [024]=[00000000] ║ [040]=[00000000] ║ [056]=[00000000] ║
║ [012]=[00000000] ║ [028]=[00000000] ║ [044]=[00000000] ║ [060]=[00000000] ║
╚══════════════════╩══════════════════╩══════════════════╩══════════════════╝
─────────────────────────────────────────────────────────────────────────────────────
────────────────────────────────────── CLK #13 ──────────────────────────────────────
> Stage IF: #44 = [beq $s0, $s1, 1].
> Stage ID: #40 = [addi $s7, $zero, 1].
> Stage EX: #36 = [addi $s1, $zero, 61200].
> Stage WB: #32 = [lw $s0, 8($zero)].
─────────────────────────────────────────────────────────────────────────────────────
╔════[PC]════╗
║ [00000030] ║
╚════════════╝
╔═════════════[FORWARDING AND HAZARD UNITS]══════════════╗
║ No action. ║
╚════════════════════════════════════════════════════════╝
╔════════════════════╦═══════════[PIPELINE REGISTERS]══════════╦════════════════════╗
║ [IF/ID] ║ [ID/EX] ║ [EX/MEM] ║ [MEM/WB] ║
║════════════════════╬════════════════════╬════════════════════╬════════════════════║
║ ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║
║ ║ REG_WRITE=[1] ║ REG_WRITE=[1] ║ REG_WRITE=[0] ║
║ ║ BRANCH=[0] ║ BRANCH=[0] ║ ║
║ ║ MEM_READ=[0] ║ MEM_READ=[0] ║ ║
║ ║ MEM_WRITE=[0] ║ MEM_WRITE=[0] ║ ║
║ ║ REG_DST=[0] ║ ║ ║
║ ║ ALU_SRC=[1] ║ ║ ║
║ ║ ALU_OP=[00] ║ ║ ║
╠════════════════════╬════════════════════╬════════════════════╬════════════════════╣
║ NPC=[00000030] ║ NPC=[0000002C] ║ BR_TGT=[0003BC68] ║ ║
║ ║ A=[00000000] ║ ZERO=[00000000] ║ LMD=[0000EF10] ║
║ IR=[12110001] ║ B=[00000000] ║ ALU_OUT=[0000EF10] ║ ║
║ ║ RT=[00000017] ║ B=[00000000] ║ ALU_OUT=[00000008] ║
║ ║ RD=[00000000] ║ RD=[00000011] ║ RD=[00000010] ║
║ ║ IMM=[00000001] ║ ║ ║
║ ║ RS=[00000000] ║ ║ ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔════════════════════╦═══════════════[REGISTERS]═══════════════╦════════════════════╗
║ $00[ 0]=[00000000] ║ $t0[ 8]=[0000000F] ║ $s0[16]=[0000EF10] ║ $t8[24]=[00000000] ║
║ $at[ 1]=[00000000] ║ $t1[ 9]=[000000F0] ║ $s1[17]=[00000000] ║ $t9[25]=[00000000] ║
║ $v0[ 2]=[00000000] ║ $t2[10]=[00000000] ║ $s2[18]=[00000000] ║ $k0[26]=[00000000] ║
║ $v1[ 3]=[00000000] ║ $t3[11]=[000000FF] ║ $s3[19]=[00000000] ║ $k1[27]=[00000000] ║
║ $a0[ 4]=[00000000] ║ $t4[12]=[000000F0] ║ $s4[20]=[00000000] ║ $gp[28]=[00000000] ║
║ $a1[ 5]=[00000000] ║ $t5[13]=[0000EF10] ║ $s5[21]=[00000000] ║ $sp[29]=[00000000] ║
║ $a2[ 6]=[00000000] ║ $t6[14]=[00000000] ║ $s6[22]=[00000000] ║ $fp[30]=[00000000] ║
║ $a3[ 7]=[00000000] ║ $t7[15]=[00000000] ║ $s7[23]=[00000000] ║ $ra[31]=[00000000] ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔══════════════════╦═══════════════[MEMORY]══════════════╦══════════════════╗
║ [000]=[0000000F] ║ [016]=[00000000] ║ [032]=[00000000] ║ [048]=[00000000] ║
║ [004]=[000000F0] ║ [020]=[00000000] ║ [036]=[00000000] ║ [052]=[00000000] ║
║ [008]=[0000EF10] ║ [024]=[00000000] ║ [040]=[00000000] ║ [056]=[00000000] ║
║ [012]=[00000000] ║ [028]=[00000000] ║ [044]=[00000000] ║ [060]=[00000000] ║
╚══════════════════╩══════════════════╩══════════════════╩══════════════════╝
─────────────────────────────────────────────────────────────────────────────────────
────────────────────────────────────── CLK #14 ──────────────────────────────────────
> Stage ID: #44 = [beq $s0, $s1, 1].
> Stage EX: #40 = [addi $s7, $zero, 1].
> Stage MEM: #36 = [addi $s1, $zero, 61200] (idle).
─────────────────────────────────────────────────────────────────────────────────────
╔════[PC]════╗
║ [00000034] ║
╚════════════╝
╔═════════════[FORWARDING AND HAZARD UNITS]══════════════╗
║ Stalling (blocking write on PC and IF/ID)... ║
╚════════════════════════════════════════════════════════╝
╔════════════════════╦═══════════[PIPELINE REGISTERS]══════════╦════════════════════╗
║ [IF/ID] ║ [ID/EX] ║ [EX/MEM] ║ [MEM/WB] ║
║════════════════════╬════════════════════╬════════════════════╬════════════════════║
║ ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║
║ ║ REG_WRITE=[0] ║ REG_WRITE=[1] ║ REG_WRITE=[1] ║
║ ║ BRANCH=[1] ║ BRANCH=[0] ║ ║
║ ║ MEM_READ=[0] ║ MEM_READ=[0] ║ ║
║ ║ MEM_WRITE=[0] ║ MEM_WRITE=[0] ║ ║
║ ║ REG_DST=[0] ║ ║ ║
║ ║ ALU_SRC=[0] ║ ║ ║
║ ║ ALU_OP=[01] ║ ║ ║
╠════════════════════╬════════════════════╬════════════════════╬════════════════════╣
║ NPC=[00000030] ║ NPC=[00000030] ║ BR_TGT=[00000030] ║ ║
║ ║ A=[0000EF10] ║ ZERO=[00000000] ║ LMD=[0000EF10] ║
║ IR=[12110001] ║ B=[00000000] ║ ALU_OUT=[00000001] ║ ║
║ ║ RT=[00000011] ║ B=[00000000] ║ ALU_OUT=[0000EF10] ║
║ ║ RD=[00000000] ║ RD=[00000017] ║ RD=[00000011] ║
║ ║ IMM=[00000001] ║ ║ ║
║ ║ RS=[00000010] ║ ║ ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔════════════════════╦═══════════════[REGISTERS]═══════════════╦════════════════════╗
║ $00[ 0]=[00000000] ║ $t0[ 8]=[0000000F] ║ $s0[16]=[0000EF10] ║ $t8[24]=[00000000] ║
║ $at[ 1]=[00000000] ║ $t1[ 9]=[000000F0] ║ $s1[17]=[00000000] ║ $t9[25]=[00000000] ║
║ $v0[ 2]=[00000000] ║ $t2[10]=[00000000] ║ $s2[18]=[00000000] ║ $k0[26]=[00000000] ║
║ $v1[ 3]=[00000000] ║ $t3[11]=[000000FF] ║ $s3[19]=[00000000] ║ $k1[27]=[00000000] ║
║ $a0[ 4]=[00000000] ║ $t4[12]=[000000F0] ║ $s4[20]=[00000000] ║ $gp[28]=[00000000] ║
║ $a1[ 5]=[00000000] ║ $t5[13]=[0000EF10] ║ $s5[21]=[00000000] ║ $sp[29]=[00000000] ║
║ $a2[ 6]=[00000000] ║ $t6[14]=[00000000] ║ $s6[22]=[00000000] ║ $fp[30]=[00000000] ║
║ $a3[ 7]=[00000000] ║ $t7[15]=[00000000] ║ $s7[23]=[00000000] ║ $ra[31]=[00000000] ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔══════════════════╦═══════════════[MEMORY]══════════════╦══════════════════╗
║ [000]=[0000000F] ║ [016]=[00000000] ║ [032]=[00000000] ║ [048]=[00000000] ║
║ [004]=[000000F0] ║ [020]=[00000000] ║ [036]=[00000000] ║ [052]=[00000000] ║
║ [008]=[0000EF10] ║ [024]=[00000000] ║ [040]=[00000000] ║ [056]=[00000000] ║
║ [012]=[00000000] ║ [028]=[00000000] ║ [044]=[00000000] ║ [060]=[00000000] ║
╚══════════════════╩══════════════════╩══════════════════╩══════════════════╝
─────────────────────────────────────────────────────────────────────────────────────
────────────────────────────────────── CLK #15 ──────────────────────────────────────
> Stage EX: #44 = [beq $s0, $s1, 1].
> Stage MEM: #40 = [addi $s7, $zero, 1] (idle).
> Stage WB: #36 = [addi $s1, $zero, 61200].
─────────────────────────────────────────────────────────────────────────────────────
╔════[PC]════╗
║ [00000034] ║
╚════════════╝
╔═════════════[FORWARDING AND HAZARD UNITS]══════════════╗
║ Stalling (blocking write on PC and IF/ID)... ║
║ FWD_B=1 (MEM/WB.ALU_OUT -> Mux @ aluB and EX/MEM.B)... ║
╚════════════════════════════════════════════════════════╝
╔════════════════════╦═══════════[PIPELINE REGISTERS]══════════╦════════════════════╗
║ [IF/ID] ║ [ID/EX] ║ [EX/MEM] ║ [MEM/WB] ║
║════════════════════╬════════════════════╬════════════════════╬════════════════════║
║ ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║
║ ║ REG_WRITE=[0] ║ REG_WRITE=[0] ║ REG_WRITE=[1] ║
║ ║ BRANCH=[0] ║ BRANCH=[1] ║ ║
║ ║ MEM_READ=[0] ║ MEM_READ=[0] ║ ║
║ ║ MEM_WRITE=[0] ║ MEM_WRITE=[0] ║ ║
║ ║ REG_DST=[0] ║ ║ ║
║ ║ ALU_SRC=[0] ║ ║ ║
║ ║ ALU_OP=[00] ║ ║ ║
╠════════════════════╬════════════════════╬════════════════════╬════════════════════╣
║ NPC=[00000030] ║ NPC=[00000030] ║ BR_TGT=[00000034] ║ ║
║ ║ A=[0000EF10] ║ ZERO=[00000001] ║ LMD=[0000EF10] ║
║ IR=[12110001] ║ B=[0000EF10] ║ ALU_OUT=[00000000] ║ ║
║ ║ RT=[00000011] ║ B=[0000EF10] ║ ALU_OUT=[00000001] ║
║ ║ RD=[00000000] ║ RD=[00000011] ║ RD=[00000017] ║
║ ║ IMM=[00000001] ║ ║ ║
║ ║ RS=[00000010] ║ ║ ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔════════════════════╦═══════════════[REGISTERS]═══════════════╦════════════════════╗
║ $00[ 0]=[00000000] ║ $t0[ 8]=[0000000F] ║ $s0[16]=[0000EF10] ║ $t8[24]=[00000000] ║
║ $at[ 1]=[00000000] ║ $t1[ 9]=[000000F0] ║ $s1[17]=[0000EF10] ║ $t9[25]=[00000000] ║
║ $v0[ 2]=[00000000] ║ $t2[10]=[00000000] ║ $s2[18]=[00000000] ║ $k0[26]=[00000000] ║
║ $v1[ 3]=[00000000] ║ $t3[11]=[000000FF] ║ $s3[19]=[00000000] ║ $k1[27]=[00000000] ║
║ $a0[ 4]=[00000000] ║ $t4[12]=[000000F0] ║ $s4[20]=[00000000] ║ $gp[28]=[00000000] ║
║ $a1[ 5]=[00000000] ║ $t5[13]=[0000EF10] ║ $s5[21]=[00000000] ║ $sp[29]=[00000000] ║
║ $a2[ 6]=[00000000] ║ $t6[14]=[00000000] ║ $s6[22]=[00000000] ║ $fp[30]=[00000000] ║
║ $a3[ 7]=[00000000] ║ $t7[15]=[00000000] ║ $s7[23]=[00000000] ║ $ra[31]=[00000000] ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔══════════════════╦═══════════════[MEMORY]══════════════╦══════════════════╗
║ [000]=[0000000F] ║ [016]=[00000000] ║ [032]=[00000000] ║ [048]=[00000000] ║
║ [004]=[000000F0] ║ [020]=[00000000] ║ [036]=[00000000] ║ [052]=[00000000] ║
║ [008]=[0000EF10] ║ [024]=[00000000] ║ [040]=[00000000] ║ [056]=[00000000] ║
║ [012]=[00000000] ║ [028]=[00000000] ║ [044]=[00000000] ║ [060]=[00000000] ║
╚══════════════════╩══════════════════╩══════════════════╩══════════════════╝
─────────────────────────────────────────────────────────────────────────────────────
────────────────────────────────────── CLK #16 ──────────────────────────────────────
> Stage MEM: #44 = [beq $s0, $s1, 1] (idle).
> Stage WB: #40 = [addi $s7, $zero, 1].
─────────────────────────────────────────────────────────────────────────────────────
╔════[PC]════╗
║ [00000038] ║
╚════════════╝
╔═════════════[FORWARDING AND HAZARD UNITS]══════════════╗
║ No action. ║
╚════════════════════════════════════════════════════════╝
╔════════════════════╦═══════════[PIPELINE REGISTERS]══════════╦════════════════════╗
║ [IF/ID] ║ [ID/EX] ║ [EX/MEM] ║ [MEM/WB] ║
║════════════════════╬════════════════════╬════════════════════╬════════════════════║
║ ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║
║ ║ REG_WRITE=[0] ║ REG_WRITE=[0] ║ REG_WRITE=[0] ║
║ ║ BRANCH=[0] ║ BRANCH=[0] ║ ║
║ ║ MEM_READ=[0] ║ MEM_READ=[0] ║ ║
║ ║ MEM_WRITE=[0] ║ MEM_WRITE=[0] ║ ║
║ ║ REG_DST=[0] ║ ║ ║
║ ║ ALU_SRC=[0] ║ ║ ║
║ ║ ALU_OP=[00] ║ ║ ║
╠════════════════════╬════════════════════╬════════════════════╬════════════════════╣
║ NPC=[00000038] ║ NPC=[00000030] ║ BR_TGT=[00000034] ║ ║
║ ║ A=[0000EF10] ║ ZERO=[00000001] ║ LMD=[0000EF10] ║
║ IR=[00000000] ║ B=[0000EF10] ║ ALU_OUT=[0001DE20] ║ ║
║ ║ RT=[00000011] ║ B=[0000EF10] ║ ALU_OUT=[00000000] ║
║ ║ RD=[00000000] ║ RD=[00000011] ║ RD=[00000011] ║
║ ║ IMM=[00000001] ║ ║ ║
║ ║ RS=[00000010] ║ ║ ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔════════════════════╦═══════════════[REGISTERS]═══════════════╦════════════════════╗
║ $00[ 0]=[00000000] ║ $t0[ 8]=[0000000F] ║ $s0[16]=[0000EF10] ║ $t8[24]=[00000000] ║
║ $at[ 1]=[00000000] ║ $t1[ 9]=[000000F0] ║ $s1[17]=[0000EF10] ║ $t9[25]=[00000000] ║
║ $v0[ 2]=[00000000] ║ $t2[10]=[00000000] ║ $s2[18]=[00000000] ║ $k0[26]=[00000000] ║
║ $v1[ 3]=[00000000] ║ $t3[11]=[000000FF] ║ $s3[19]=[00000000] ║ $k1[27]=[00000000] ║
║ $a0[ 4]=[00000000] ║ $t4[12]=[000000F0] ║ $s4[20]=[00000000] ║ $gp[28]=[00000000] ║
║ $a1[ 5]=[00000000] ║ $t5[13]=[0000EF10] ║ $s5[21]=[00000000] ║ $sp[29]=[00000000] ║
║ $a2[ 6]=[00000000] ║ $t6[14]=[00000000] ║ $s6[22]=[00000000] ║ $fp[30]=[00000000] ║
║ $a3[ 7]=[00000000] ║ $t7[15]=[00000000] ║ $s7[23]=[00000001] ║ $ra[31]=[00000000] ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔══════════════════╦═══════════════[MEMORY]══════════════╦══════════════════╗
║ [000]=[0000000F] ║ [016]=[00000000] ║ [032]=[00000000] ║ [048]=[00000000] ║
║ [004]=[000000F0] ║ [020]=[00000000] ║ [036]=[00000000] ║ [052]=[00000000] ║
║ [008]=[0000EF10] ║ [024]=[00000000] ║ [040]=[00000000] ║ [056]=[00000000] ║
║ [012]=[00000000] ║ [028]=[00000000] ║ [044]=[00000000] ║ [060]=[00000000] ║
╚══════════════════╩══════════════════╩══════════════════╩══════════════════╝
─────────────────────────────────────────────────────────────────────────────────────
────────────────────────────────────── CLK #17 ──────────────────────────────────────
> Stage WB: #44 = [beq $s0, $s1, 1] (idle).
─────────────────────────────────────────────────────────────────────────────────────
╔════[PC]════╗
║ [0000003C] ║
╚════════════╝
╔═════════════[FORWARDING AND HAZARD UNITS]══════════════╗
║ No action. ║
╚════════════════════════════════════════════════════════╝
╔════════════════════╦═══════════[PIPELINE REGISTERS]══════════╦════════════════════╗
║ [IF/ID] ║ [ID/EX] ║ [EX/MEM] ║ [MEM/WB] ║
║════════════════════╬════════════════════╬════════════════════╬════════════════════║
║ ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║ MEM_TO_REG=[0] ║
║ ║ REG_WRITE=[1] ║ REG_WRITE=[0] ║ REG_WRITE=[0] ║
║ ║ BRANCH=[0] ║ BRANCH=[0] ║ ║
║ ║ MEM_READ=[0] ║ MEM_READ=[0] ║ ║
║ ║ MEM_WRITE=[0] ║ MEM_WRITE=[0] ║ ║
║ ║ REG_DST=[1] ║ ║ ║
║ ║ ALU_SRC=[0] ║ ║ ║
║ ║ ALU_OP=[10] ║ ║ ║
╠════════════════════╬════════════════════╬════════════════════╬════════════════════╣
║ NPC=[0000003C] ║ NPC=[00000038] ║ BR_TGT=[00000034] ║ ║
║ ║ A=[00000000] ║ ZERO=[00000001] ║ LMD=[0000EF10] ║
║ IR=[00000000] ║ B=[00000000] ║ ALU_OUT=[0001DE20] ║ ║
║ ║ RT=[00000000] ║ B=[0000EF10] ║ ALU_OUT=[0001DE20] ║
║ ║ RD=[00000000] ║ RD=[00000011] ║ RD=[00000011] ║
║ ║ IMM=[00000000] ║ ║ ║
║ ║ RS=[00000000] ║ ║ ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔════════════════════╦═══════════════[REGISTERS]═══════════════╦════════════════════╗
║ $00[ 0]=[00000000] ║ $t0[ 8]=[0000000F] ║ $s0[16]=[0000EF10] ║ $t8[24]=[00000000] ║
║ $at[ 1]=[00000000] ║ $t1[ 9]=[000000F0] ║ $s1[17]=[0000EF10] ║ $t9[25]=[00000000] ║
║ $v0[ 2]=[00000000] ║ $t2[10]=[00000000] ║ $s2[18]=[00000000] ║ $k0[26]=[00000000] ║
║ $v1[ 3]=[00000000] ║ $t3[11]=[000000FF] ║ $s3[19]=[00000000] ║ $k1[27]=[00000000] ║
║ $a0[ 4]=[00000000] ║ $t4[12]=[000000F0] ║ $s4[20]=[00000000] ║ $gp[28]=[00000000] ║
║ $a1[ 5]=[00000000] ║ $t5[13]=[0000EF10] ║ $s5[21]=[00000000] ║ $sp[29]=[00000000] ║
║ $a2[ 6]=[00000000] ║ $t6[14]=[00000000] ║ $s6[22]=[00000000] ║ $fp[30]=[00000000] ║
║ $a3[ 7]=[00000000] ║ $t7[15]=[00000000] ║ $s7[23]=[00000001] ║ $ra[31]=[00000000] ║
╚════════════════════╩════════════════════╩════════════════════╩════════════════════╝
╔══════════════════╦═══════════════[MEMORY]══════════════╦══════════════════╗
║ [000]=[0000000F] ║ [016]=[00000000] ║ [032]=[00000000] ║ [048]=[00000000] ║
║ [004]=[000000F0] ║ [020]=[00000000] ║ [036]=[00000000] ║ [052]=[00000000] ║
║ [008]=[0000EF10] ║ [024]=[00000000] ║ [040]=[00000000] ║ [056]=[00000000] ║
║ [012]=[00000000] ║ [028]=[00000000] ║ [044]=[00000000] ║ [060]=[00000000] ║
╚══════════════════╩══════════════════╩══════════════════╩══════════════════╝
─────────────────────────────────────────────────────────────────────────────────────
Empty pipeline, ending execution...
Program ran in 18 clocks.
╔════════════════════════╦════════════════════════════════════════════════════════════════════════════════════════════════════════════╗
║ Clock # ║ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 ║
╠════════════════════════╬════════════════════════════════════════════════════════════════════════════════════════════════════════════╣
║ addi $t0, $zero, 15 ║ IF ID EX WB ║
║ sw $t0, 0($zero) ║ IF ID EX MEM ║
║ addi $t1, $zero, 240 ║ IF ID EX WB ║
║ sw $t1, 4($zero) ║ IF ID EX MEM ║
║ add $t3, $t0, $t1 ║ IF ID EX WB ║
║ lw $t4, 4($zero) ║ IF ID EX MEM WB ║
║ mult $t5, $t4, $t3 ║ IF ID EX WB ║
║ sw $t5, 8($zero) ║ IF ID EX MEM ║
║ lw $s0, 8($zero) ║ IF ID EX MEM WB ║
║ addi $s1, $zero, 61200 ║ IF ID EX WB ║
║ addi $s7, $zero, 1 ║ IF ID EX WB ║
║ beq $s0, $s1, 1 ║ IF ID EX ║
║ addi $s7, $s7, 1 ║ ║
╚════════════════════════╩════════════════════════════════════════════════════════════════════════════════════════════════════════════╝