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Line No.	Rev	Author	Line
1	15	rhoads	`##################################################################`
2			`# TITLE: Opcode Tester`
3			`# AUTHOR: Steve Rhoads (rhoadss@yahoo.com)`
4			`# DATE CREATED: 1/10/02`
5			`# FILENAME: opcodes.asm`
6			`# PROJECT: MIPS CPU core`
7			`# COPYRIGHT: Software placed into the public domain by the author.`
8			`# Software 'as is' without warranty. Author liable for nothing.`
9			`# DESCRIPTION:`
10			`# This assembly file tests all of the opcodes supported by the`
11			`# MIPS-lite core.`
12			`# This test assumes that address 0xffff is the UART write register`
13			`# Successful tests will print out "A" or "AB" or "ABC" or ....`
14			`# Missing letters or letters out of order indicate a failure.`
15			`##################################################################`
16			`.text`
17			`.align 2`
18			`.globl entry`
19			`.ent entry`
20			`entry:`
21			`.set noreorder`
22
23	29	rhoads	`#These four instructions must be the first instructions`
24			`#convert.exe will correctly initialize $gp`
25			`lui $gp,0`
26			`ori $gp,$gp,0`
27			`#convert.exe will set $4=.sbss_start $5=.bss_end`
28			`ori $4,$0,0`
29			`ori $5,$0,0`
30
31	23	rhoads	`mtc0 $0,$12 #disable interrupts`
32	15	rhoads	`ori $20,$0,0xffff #serial port write address`
33			`ori $21,$0,'\n' # letter`
34			`ori $22,$0,'X' #'X' letter`
35
36			`######################################`
37			`#Arithmetic Instructions`
38			`######################################`
39			`ori $2,$0,'A'`
40			`sb $2,0($20)`
41			`ori $2,$0,'r'`
42			`sb $2,0($20)`
43			`ori $2,$0,'i'`
44			`sb $2,0($20)`
45			`ori $2,$0,'t'`
46			`sb $2,0($20)`
47			`ori $2,$0,'h'`
48			`sb $2,0($20)`
49			`sb $21,0($20)`
50
51	23	rhoads	`#a: ADD`
52			`ori $2,$0,'a'`
53			`sb $2,0($20)`
54	15	rhoads	`ori $3,$0,5`
55			`ori $4,$0,60`
56			`add $2,$3,$4`
57	23	rhoads	`sb $2,0($20) #A`
58	15	rhoads	`sb $21,0($20)`
59
60	23	rhoads	`#b: ADDI`
61			`ori $2,$0,'b'`
62			`sb $2,0($20)`
63	15	rhoads	`ori $4,$0,60`
64			`addi $2,$4,5`
65	23	rhoads	`sb $2,0($20) #A`
66	15	rhoads	`sb $21,0($20)`
67
68	23	rhoads	`#c: ADDIU`
69			`ori $2,$0,'c'`
70			`sb $2,0($20)`
71	15	rhoads	`ori $4,$0,50`
72			`addiu $5,$4,15`
73	23	rhoads	`sb $5,0($20) #A`
74	15	rhoads	`sb $21,0($20)`
75
76	23	rhoads	`#d: ADDU`
77			`ori $2,$0,'d'`
78			`sb $2,0($20)`
79	15	rhoads	`ori $3,$0,5`
80			`ori $4,$0,60`
81			`add $2,$3,$4`
82	23	rhoads	`sb $2,0($20) #A`
83	15	rhoads	`sb $21,0($20)`
84
85	23	rhoads	`#e: DIV`
86			`ori $2,$0,'e'`
87			`sb $2,0($20)`
88			`ori $2,$0,65*117+41`
89			`ori $3,$0,117`
90	15	rhoads	`div $2,$3`
91			`nop`
92			`mflo $4`
93	23	rhoads	`sb $4,0($20) #A`
94			`mfhi $4`
95			`addi $4,$4,66-41`
96			`sb $4,0($20) #B`
97			`li $2,-67*19`
98	15	rhoads	`ori $3,$0,19`
99			`div $2,$3`
100			`nop`
101			`mflo $4`
102			`sub $4,$0,$4`
103	23	rhoads	`sb $4,0($20) #C`
104			`ori $2,$0,68*23`
105	15	rhoads	`li $3,-23`
106			`div $2,$3`
107			`nop`
108			`mflo $4`
109			`sub $4,$0,$4`
110	23	rhoads	`sb $4,0($20) #D`
111			`li $2,-69*13`
112	15	rhoads	`li $3,-13`
113			`div $2,$3`
114			`mflo $4`
115	23	rhoads	`sb $4,0($20) #E`
116	15	rhoads	`sb $21,0($20)`
117
118	23	rhoads	`#f: DIVU`
119			`ori $2,$0,'f'`
120			`sb $2,0($20)`
121	15	rhoads	`ori $2,$0,65*13`
122			`ori $3,$0,13`
123	23	rhoads	`divu $2,$3`
124	15	rhoads	`nop`
125			`mflo $4`
126	23	rhoads	`sb $4,0($20) #A`
127	15	rhoads	`sb $21,0($20)`
128
129	23	rhoads	`#g: MULT`
130			`ori $2,$0,'g'`
131			`sb $2,0($20)`
132	15	rhoads	`ori $2,$0,5`
133			`ori $3,$0,13`
134			`mult $2,$3`
135			`nop`
136			`mflo $4`
137	23	rhoads	`sb $4,0($20) #A`
138	15	rhoads	`li $2,-5`
139			`ori $3,$0,13`
140			`mult $2,$3`
141			`nop`
142			`mflo $4`
143			`sub $4,$0,$4`
144			`addi $4,$4,1`
145	23	rhoads	`sb $4,0($20) #B`
146	15	rhoads	`ori $2,$0,5`
147			`li $3,-13`
148			`mult $2,$3`
149			`nop`
150			`mflo $4`
151			`sub $4,$0,$4`
152			`addi $4,$4,2`
153	23	rhoads	`sb $4,0($20) #C`
154	15	rhoads	`li $2,-5`
155			`li $3,-13`
156			`mult $2,$3`
157			`nop`
158			`mflo $4`
159			`addi $4,$4,3`
160	23	rhoads	`sb $4,0($20) #D`
161	15	rhoads	`sb $21,0($20)`
162
163	23	rhoads	`#h: MULTU`
164			`ori $2,$0,'h'`
165			`sb $2,0($20)`
166	15	rhoads	`ori $2,$0,5`
167			`ori $3,$0,13`
168	23	rhoads	`multu $2,$3`
169	15	rhoads	`nop`
170			`mflo $4`
171	23	rhoads	`sb $4,0($20) #A`
172	15	rhoads	`sb $21,0($20)`
173
174	23	rhoads	`#i: SLT`
175			`ori $2,$0,'i'`
176			`sb $2,0($20)`
177	15	rhoads	`ori $2,$0,10`
178			`ori $3,$0,12`
179			`slt $4,$2,$3`
180			`addi $5,$4,64`
181	23	rhoads	`sb $5,0($20) #A`
182	15	rhoads	`slt $4,$3,$2`
183			`addi $5,$4,66`
184	23	rhoads	`sb $5,0($20) #B`
185	15	rhoads	`li $2,0xfffffff0`
186			`slt $4,$2,$3`
187			`addi $5,$4,66`
188	23	rhoads	`sb $5,0($20) #C`
189	15	rhoads	`slt $4,$3,$2`
190			`addi $5,$4,68`
191	23	rhoads	`sb $5,0($20) #D`
192	15	rhoads	`li $3,0xffffffff`
193			`slt $4,$2,$3`
194			`addi $5,$4,68`
195	23	rhoads	`sb $5,0($20) #E`
196	15	rhoads	`slt $4,$3,$2`
197			`addi $5,$4,70`
198	23	rhoads	`sb $5,0($20) #F`
199	15	rhoads	`sb $21,0($20)`
200
201	23	rhoads	`#j: SLTI`
202			`ori $2,$0,'j'`
203			`sb $2,0($20)`
204	15	rhoads	`ori $2,$0,10`
205			`slti $4,$2,12`
206			`addi $5,$4,64`
207	23	rhoads	`sb $5,0($20) #A`
208	15	rhoads	`slti $4,$2,8`
209			`addi $5,$4,66`
210	23	rhoads	`sb $5,0($20) #B`
211	15	rhoads	`sb $21,0($20)`
212
213	23	rhoads	`#k: SLTIU`
214			`ori $2,$0,'k'`
215			`sb $2,0($20)`
216	15	rhoads	`ori $2,$0,10`
217			`sltiu $4,$2,12`
218			`addi $5,$4,64`
219	23	rhoads	`sb $5,0($20) #A`
220	15	rhoads	`sltiu $4,$2,8`
221			`addi $5,$4,66`
222	23	rhoads	`sb $5,0($20) #B`
223	15	rhoads	`sb $21,0($20)`
224
225	23	rhoads	`#l: SLTU`
226			`ori $2,$0,'l'`
227			`sb $2,0($20)`
228	15	rhoads	`ori $2,$0,10`
229			`ori $3,$0,12`
230			`slt $4,$2,$3`
231			`addi $5,$4,64`
232	23	rhoads	`sb $5,0($20) #A`
233	15	rhoads	`slt $4,$3,$2`
234			`addi $5,$4,66`
235	23	rhoads	`sb $5,0($20) #B`
236	15	rhoads	`sb $21,0($20)`
237
238	23	rhoads	`#m: SUB`
239			`ori $2,$0,'m'`
240			`sb $2,0($20)`
241	15	rhoads	`ori $3,$0,70`
242			`ori $4,$0,5`
243			`sub $2,$3,$4`
244	23	rhoads	`sb $2,0($20) #A`
245	15	rhoads	`sb $21,0($20)`
246
247	23	rhoads	`#n: SUBU`
248			`ori $2,$0,'n'`
249			`sb $2,0($20)`
250	15	rhoads	`ori $3,$0,70`
251			`ori $4,$0,5`
252			`sub $2,$3,$4`
253	23	rhoads	`sb $2,0($20) #A`
254	15	rhoads	`sb $21,0($20)`
255
256			`######################################`
257			`#Branch and Jump Instructions`
258			`######################################`
259			`ori $2,$0,'B'`
260			`sb $2,0($20)`
261			`ori $2,$0,'r'`
262			`sb $2,0($20)`
263			`ori $2,$0,'a'`
264			`sb $2,0($20)`
265			`ori $2,$0,'n'`
266			`sb $2,0($20)`
267			`ori $2,$0,'c'`
268			`sb $2,0($20)`
269			`ori $2,$0,'h'`
270			`sb $2,0($20)`
271			`sb $21,0($20)`
272
273	23	rhoads	`#a: B`
274			`ori $2,$0,'a'`
275			`sb $2,0($20)`
276	15	rhoads	`ori $10,$0,'A'`
277			`ori $11,$0,'B'`
278			`b $B1`
279			`sb $10,0($20)`
280			`sb $22,0($20)`
281			`$B1:`
282			`sb $11,0($20)`
283			`sb $21,0($20)`
284
285	23	rhoads	`#b: BAL`
286			`ori $2,$0,'b'`
287			`sb $2,0($20)`
288	15	rhoads	`ori $10,$0,'A'`
289			`ori $11,$0,'B'`
290			`ori $12,$0,'C'`
291			`ori $13,$0,'D'`
292			`ori $14,$0,'E'`
293			`ori $15,$0,'X'`
294			`bal $BAL1`
295			`sb $10,0($20)`
296			`sb $13,0($20)`
297			`b $BAL2`
298			`sb $14,0($20)`
299			`sb $15,0($20)`
300			`$BAL1:`
301			`sb $11,0($20)`
302			`jr $31`
303			`sb $12,0($20)`
304			`sb $22,0($20)`
305			`$BAL2:`
306			`sb $21,0($20)`
307
308	23	rhoads	`#c: BEQ`
309			`ori $2,$0,'c'`
310			`sb $2,0($20)`
311	15	rhoads	`ori $10,$0,'A'`
312			`ori $11,$0,'B'`
313			`ori $12,$0,'C'`
314			`ori $13,$0,'D'`
315			`ori $2,$0,100`
316			`ori $3,$0,123`
317			`ori $4,$0,123`
318			`beq $2,$3,$BEQ1`
319			`sb $10,0($20)`
320			`sb $11,0($20)`
321			`beq $3,$4,$BEQ1`
322			`sb $12,0($20)`
323			`sb $22,0($20)`
324			`$BEQ1:`
325			`sb $13,0($20)`
326			`sb $21,0($20)`
327
328	23	rhoads	`#d: BGEZ`
329			`ori $2,$0,'d'`
330			`sb $2,0($20)`
331	15	rhoads	`ori $10,$0,'A'`
332			`ori $11,$0,'B'`
333			`ori $12,$0,'C'`
334			`ori $13,$0,'D'`
335			`or $15,$0,'X'`
336			`ori $2,$0,100`
337			`li $3,0xffff1234`
338			`ori $4,$0,123`
339			`bgez $3,$BGEZ1`
340			`sb $10,0($20)`
341			`sb $11,0($20)`
342			`bgez $2,$BGEZ1`
343			`sb $12,0($20)`
344			`sb $22,0($20)`
345			`$BGEZ1:`
346			`bgez $0,$BGEZ2`
347			`nop`
348			`sb $15,0($20)`
349			`$BGEZ2:`
350			`sb $13,0($20)`
351			`sb $21,0($20)`
352
353	23	rhoads	`#e: BGEZAL`
354			`ori $2,$0,'e'`
355			`sb $2,0($20)`
356	15	rhoads	`ori $10,$0,'A'`
357			`ori $11,$0,'B'`
358			`ori $12,$0,'C'`
359			`ori $13,$0,'D'`
360			`ori $14,$0,'E'`
361			`ori $15,$0,'X'`
362			`li $3,0xffff1234`
363			`bgezal $3,$BGEZAL1`
364			`nop`
365			`sb $10,0($20)`
366			`bgezal $0,$BGEZAL1`
367			`nop`
368			`sb $13,0($20)`
369			`b $BGEZAL2`
370			`sb $14,0($20)`
371			`sb $15,0($20)`
372			`$BGEZAL1:`
373			`sb $11,0($20)`
374			`jr $31`
375			`sb $12,0($20)`
376			`sb $22,0($20)`
377			`$BGEZAL2:`
378			`sb $21,0($20)`
379
380	23	rhoads	`#f: BGTZ`
381			`ori $2,$0,'f'`
382			`sb $2,0($20)`
383	15	rhoads	`ori $10,$0,'A'`
384			`ori $11,$0,'B'`
385			`ori $12,$0,'C'`
386			`ori $13,$0,'D'`
387			`ori $2,$0,100`
388			`li $3,0xffff1234`
389			`bgtz $3,$BGTZ1`
390			`sb $10,0($20)`
391			`sb $11,0($20)`
392			`bgtz $2,$BGTZ1`
393			`sb $12,0($20)`
394			`sb $22,0($20)`
395			`$BGTZ1:`
396			`sb $13,0($20)`
397			`sb $21,0($20)`
398
399	23	rhoads	`#g: BLEZ`
400			`ori $2,$0,'g'`
401			`sb $2,0($20)`
402	15	rhoads	`ori $10,$0,'A'`
403			`ori $11,$0,'B'`
404			`ori $12,$0,'C'`
405			`ori $13,$0,'D'`
406			`ori $2,$0,100`
407			`li $3,0xffff1234`
408			`blez $2,$BLEZ1`
409			`sb $10,0($20)`
410			`sb $11,0($20)`
411			`blez $3,$BLEZ1`
412			`sb $12,0($20)`
413			`sb $22,0($20)`
414			`$BLEZ1:`
415			`blez $0,$BLEZ2`
416			`nop`
417			`sb $22,0($20)`
418			`$BLEZ2:`
419			`sb $13,0($20)`
420			`sb $21,0($20)`
421
422	23	rhoads	`#h: BLTZ`
423			`ori $2,$0,'h'`
424			`sb $2,0($20)`
425	15	rhoads	`ori $10,$0,'A'`
426			`ori $11,$0,'B'`
427			`ori $12,$0,'C'`
428			`ori $13,$0,'D'`
429			`ori $14,$0,'E'`
430			`ori $2,$0,100`
431			`li $3,0xffff1234`
432			`ori $4,$0,0`
433			`bltz $2,$BLTZ1`
434			`sb $10,0($20)`
435			`sb $11,0($20)`
436			`bltz $3,$BLTZ1`
437			`sb $12,0($20)`
438			`sb $22,0($20)`
439			`$BLTZ1:`
440			`bltz $4,$BLTZ2`
441			`nop`
442			`sb $13,0($20)`
443			`$BLTZ2:`
444			`sb $14,0($20)`
445			`sb $21,0($20)`
446
447	23	rhoads	`#i: BLTZAL`
448			`ori $2,$0,'i'`
449			`sb $2,0($20)`
450	15	rhoads	`ori $10,$0,'A'`
451			`ori $11,$0,'B'`
452			`ori $12,$0,'C'`
453			`ori $13,$0,'D'`
454			`ori $14,$0,'E'`
455			`ori $15,$0,'X'`
456			`li $3,0xffff1234`
457			`bltzal $0,$BLTZAL1`
458			`nop`
459			`sb $10,0($20)`
460			`bltzal $3,$BLTZAL1`
461			`nop`
462			`sb $13,0($20)`
463			`b $BLTZAL2`
464			`sb $14,0($20)`
465			`sb $15,0($20)`
466			`$BLTZAL1:`
467			`sb $11,0($20)`
468			`jr $31`
469			`sb $12,0($20)`
470			`sb $22,0($20)`
471			`$BLTZAL2:`
472			`sb $21,0($20)`
473
474	23	rhoads	`#j: BNE`
475			`ori $2,$0,'j'`
476			`sb $2,0($20)`
477	15	rhoads	`ori $10,$0,'A'`
478			`ori $11,$0,'B'`
479			`ori $12,$0,'C'`
480			`ori $13,$0,'D'`
481			`ori $2,$0,100`
482			`ori $3,$0,123`
483			`ori $4,$0,123`
484			`bne $3,$4,$BNE1`
485			`sb $10,0($20)`
486			`sb $11,0($20)`
487			`bne $2,$3,$BNE1`
488			`sb $12,0($20)`
489			`sb $22,0($20)`
490			`$BNE1:`
491			`sb $13,0($20)`
492			`sb $21,0($20)`
493
494	23	rhoads	`#k: J`
495			`ori $2,$0,'k'`
496			`sb $2,0($20)`
497	15	rhoads	`ori $10,$0,'A'`
498			`ori $11,$0,'B'`
499			`ori $15,$0,'X'`
500			`j $J1`
501			`sb $10,0($20)`
502			`sb $15,0($20)`
503			`$J1:`
504			`sb $11,0($20)`
505			`sb $21,0($20)`
506
507	23	rhoads	`#l: JAL`
508			`ori $2,$0,'l'`
509			`sb $2,0($20)`
510	15	rhoads	`ori $10,$0,'A'`
511			`ori $11,$0,'B'`
512			`ori $12,$0,'C'`
513			`ori $13,$0,'D'`
514			`ori $14,$0,'E'`
515			`ori $15,$0,'X'`
516			`jal $JAL1`
517			`sb $10,0($20)`
518			`sb $13,0($20)`
519			`b $JAL2`
520			`sb $14,0($20)`
521			`sb $15,0($20)`
522			`$JAL1:`
523			`sb $11,0($20)`
524			`jr $31`
525			`sb $12,0($20)`
526			`sb $22,0($20)`
527			`$JAL2:`
528			`sb $21,0($20)`
529
530	23	rhoads	`#m: JALR`
531			`ori $2,$0,'m'`
532			`sb $2,0($20)`
533	15	rhoads	`ori $10,$0,'A'`
534			`ori $11,$0,'B'`
535			`ori $12,$0,'C'`
536			`ori $13,$0,'D'`
537			`ori $14,$0,'E'`
538			`ori $15,$0,'X'`
539			`la $3,$JALR1`
540			`jalr $3`
541			`sb $10,0($20)`
542			`sb $13,0($20)`
543			`b $JALR2`
544			`sb $14,0($20)`
545			`sb $15,0($20)`
546			`$JALR1:`
547			`sb $11,0($20)`
548			`jr $31`
549			`sb $12,0($20)`
550			`sb $22,0($20)`
551			`$JALR2:`
552			`sb $21,0($20)`
553
554	23	rhoads	`#n: JR`
555			`ori $2,$0,'n'`
556			`sb $2,0($20)`
557	15	rhoads	`ori $10,$0,'A'`
558			`ori $11,$0,'B'`
559			`ori $15,$0,'X'`
560			`la $3,$JR1`
561			`jr $3`
562			`sb $10,0($20)`
563			`sb $15,0($20)`
564			`$JR1:`
565			`sb $11,0($20)`
566			`sb $21,0($20)`
567
568	23	rhoads	`#o: NOP`
569			`ori $2,$0,'o'`
570			`sb $2,0($20)`
571	15	rhoads	`ori $2,$0,65`
572			`nop`
573			`sb $2,0($20)`
574			`sb $21,0($20)`
575
576
577			`######################################`
578			`#Load, Store, and Memory Control Instructions`
579			`######################################`
580			`ori $2,$0,'L'`
581			`sb $2,0($20)`
582			`ori $2,$0,'o'`
583			`sb $2,0($20)`
584			`ori $2,$0,'a'`
585			`sb $2,0($20)`
586			`ori $2,$0,'d'`
587			`sb $2,0($20)`
588			`sb $21,0($20)`
589
590	23	rhoads	`#a: LB`
591			`ori $2,$0,'a'`
592			`sb $2,0($20)`
593	15	rhoads	`ori $2,$0,0xf000`
594			`li $3,0x41424344`
595			`sw $3,16($2)`
596			`lb $4,16($2)`
597			`sb $4,0($20)`
598			`lb $4,17($2)`
599			`sb $4,0($20)`
600			`lb $4,18($2)`
601			`sb $4,0($20)`
602			`lb $2,19($2)`
603			`sb $2,0($20)`
604			`sb $21,0($20)`
605
606	23	rhoads	`#b: LBU`
607			`ori $2,$0,'b'`
608			`sb $2,0($20)`
609	15	rhoads	`ori $2,$0,0xf000`
610			`li $3,0x41424344`
611			`sw $3,16($2)`
612			`lb $4,16($2)`
613			`sb $4,0($20)`
614			`lb $4,17($2)`
615			`sb $4,0($20)`
616			`lb $4,18($2)`
617			`sb $4,0($20)`
618			`lb $2,19($2)`
619			`sb $2,0($20)`
620			`sb $21,0($20)`
621
622	23	rhoads	`#c: LH`
623			`ori $2,$0,'c'`
624			`sb $2,0($20)`
625	15	rhoads	`ori $2,$0,0xf000`
626			`li $3,0x00410042`
627			`sw $3,16($2)`
628			`lh $4,16($2)`
629			`sb $4,0($20)`
630			`lh $2,18($2)`
631			`sb $2,0($20)`
632			`sb $21,0($20)`
633
634	23	rhoads	`#d: LHU`
635			`ori $2,$0,'d'`
636			`sb $2,0($20)`
637	15	rhoads	`ori $2,$0,0xf000`
638			`li $3,0x00410042`
639			`sw $3,16($2)`
640			`lh $4,16($2)`
641			`sb $4,0($20)`
642			`lh $2,18($2)`
643			`sb $2,0($20)`
644			`sb $21,0($20)`
645
646	23	rhoads	`#e: LW`
647			`ori $2,$0,'e'`
648			`sb $2,0($20)`
649	15	rhoads	`ori $2,$0,0xf000`
650			`li $3,'A'`
651			`sw $3,16($2)`
652			`ori $3,$0,0`
653			`lw $2,16($2)`
654			`sb $2,0($20)`
655			`sb $21,0($20)`
656
657	23	rhoads	`#f: LWL & LWR`
658			`ori $2,$0,'f'`
659			`sb $2,0($20)`
660	15	rhoads	`ori $2,$0,0xf000`
661			`li $3,'A'`
662			`sw $3,16($2)`
663			`ori $3,$0,0`
664			`lwl $2,16($2)`
665			`lwr $2,16($2)`
666			`sb $2,0($20)`
667			`sb $21,0($20)`
668
669	23	rhoads	`#g: SB`
670			`ori $2,$0,'g'`
671			`sb $2,0($20)`
672	15	rhoads	`ori $2,$0,'A'`
673			`sb $2,0($20)`
674			`sb $21,0($20)`
675
676	23	rhoads	`#h: SH`
677			`ori $2,$0,'h'`
678			`sb $2,0($20)`
679	29	rhoads	`ori $4,$0,0xf000`
680	15	rhoads	`ori $2,$0,0x4142`
681	29	rhoads	`sh $2,16($4)`
682			`lb $3,16($4)`
683	15	rhoads	`sb $3,0($20)`
684	29	rhoads	`lb $2,17($4)`
685	15	rhoads	`sb $2,0($20)`
686			`sb $21,0($20)`
687
688	23	rhoads	`#i: SW`
689			`ori $2,$0,'i'`
690			`sb $2,0($20)`
691	15	rhoads	`ori $2,$0,0xf000`
692			`li $3,0x41424344`
693			`sw $3,16($2)`
694			`lb $4,16($2)`
695			`sb $4,0($20)`
696			`lb $4,17($2)`
697			`sb $4,0($20)`
698			`lb $4,18($2)`
699			`sb $4,0($20)`
700			`lb $2,19($2)`
701			`sb $2,0($20)`
702			`sb $21,0($20)`
703
704	23	rhoads	`#j: SWL & SWR`
705			`ori $2,$0,'j'`
706			`sb $2,0($20)`
707	15	rhoads	`ori $2,$0,0xf000`
708			`li $3,0x41424344`
709			`swl $3,16($2)`
710			`swr $3,16($2)`
711			`lb $4,16($2)`
712			`sb $4,0($20)`
713			`lb $4,17($2)`
714			`sb $4,0($20)`
715			`lb $4,18($2)`
716			`sb $4,0($20)`
717			`lb $2,19($2)`
718			`sb $2,0($20)`
719			`sb $21,0($20)`
720
721
722			`######################################`
723			`#Logical Instructions`
724			`######################################`
725			`ori $2,$0,'L'`
726			`sb $2,0($20)`
727			`ori $2,$0,'o'`
728			`sb $2,0($20)`
729			`ori $2,$0,'g'`
730			`sb $2,0($20)`
731			`ori $2,$0,'i'`
732			`sb $2,0($20)`
733			`ori $2,$0,'c'`
734			`sb $2,0($20)`
735			`sb $21,0($20)`
736
737	23	rhoads	`#a: AND`
738			`ori $2,$0,'a'`
739			`sb $2,0($20)`
740	15	rhoads	`ori $2,$0,0x0741`
741			`ori $3,$0,0x60f3`
742			`and $4,$2,$3`
743			`sb $4,0($20)`
744			`sb $21,0($20)`
745
746	23	rhoads	`#b: ANDI`
747			`ori $2,$0,'b'`
748			`sb $2,0($20)`
749	15	rhoads	`ori $2,$0,0x0741`
750			`andi $4,$2,0x60f3`
751			`sb $4,0($20)`
752			`sb $21,0($20)`
753
754	23	rhoads	`#c: LUI`
755			`ori $2,$0,'c'`
756			`sb $2,0($20)`
757	15	rhoads	`lui $2,0x41`
758			`srl $3,$2,16`
759			`sb $3,0($20)`
760			`sb $21,0($20)`
761
762	23	rhoads	`#d: NOR`
763			`ori $2,$0,'d'`
764			`sb $2,0($20)`
765	15	rhoads	`li $2,0xf0fff08e`
766			`li $3,0x0f0f0f30`
767			`nor $4,$2,$3`
768			`sb $4,0($20)`
769			`sb $21,0($20)`
770
771	23	rhoads	`#e: OR`
772			`ori $2,$0,'e'`
773			`sb $2,0($20)`
774	15	rhoads	`ori $2,$0,0x40`
775			`ori $3,$0,0x01`
776			`or $4,$2,$3`
777			`sb $4,0($20)`
778			`sb $21,0($20)`
779
780	23	rhoads	`#f: ORI`
781			`ori $2,$0,'f'`
782			`sb $2,0($20)`
783	15	rhoads	`ori $2,$0,0x40`
784			`ori $4,$2,0x01`
785			`sb $4,0($20)`
786			`sb $21,0($20)`
787
788	23	rhoads	`#g: XOR`
789			`ori $2,$0,'g'`
790			`sb $2,0($20)`
791	15	rhoads	`ori $2,$0,0xf043`
792			`ori $3,$0,0xf002`
793			`xor $4,$2,$3`
794			`sb $4,0($20)`
795			`sb $21,0($20)`
796
797	23	rhoads	`#h: XORI`
798			`ori $2,$0,'h'`
799			`sb $2,0($20)`
800	15	rhoads	`ori $2,$0,0xf043`
801			`xor $4,$2,0xf002`
802			`sb $4,0($20)`
803			`sb $21,0($20)`
804
805
806			`######################################`
807			`#Move Instructions`
808			`######################################`
809			`ori $2,$0,'M'`
810			`sb $2,0($20)`
811			`ori $2,$0,'o'`
812			`sb $2,0($20)`
813			`ori $2,$0,'v'`
814			`sb $2,0($20)`
815			`ori $2,$0,'e'`
816			`sb $2,0($20)`
817			`sb $21,0($20)`
818
819	23	rhoads	`#a: MFHI`
820			`ori $2,$0,'a'`
821			`sb $2,0($20)`
822	15	rhoads	`ori $2,$0,65`
823			`mthi $2`
824			`mfhi $3`
825			`sb $3,0($20)`
826			`sb $21,0($20)`
827
828	23	rhoads	`#b: MFLO`
829			`ori $2,$0,'b'`
830			`sb $2,0($20)`
831	15	rhoads	`ori $2,$0,65`
832			`mtlo $2`
833			`mflo $3`
834			`sb $3,0($20)`
835			`sb $21,0($20)`
836
837	23	rhoads	`#c: MTHI`
838			`ori $2,$0,'c'`
839			`sb $2,0($20)`
840	15	rhoads	`ori $2,$0,65`
841			`mthi $2`
842			`mfhi $3`
843			`sb $3,0($20)`
844			`sb $21,0($20)`
845
846	23	rhoads	`#d: MTLO`
847			`ori $2,$0,'d'`
848			`sb $2,0($20)`
849	15	rhoads	`ori $2,$0,65`
850			`mtlo $2`
851			`mflo $3`
852			`sb $3,0($20)`
853			`sb $21,0($20)`
854
855
856			`######################################`
857			`#Shift Instructions`
858			`######################################`
859			`ori $2,$0,'S'`
860			`sb $2,0($20)`
861			`ori $2,$0,'h'`
862			`sb $2,0($20)`
863			`ori $2,$0,'i'`
864			`sb $2,0($20)`
865			`ori $2,$0,'f'`
866			`sb $2,0($20)`
867			`ori $2,$0,'t'`
868			`sb $2,0($20)`
869			`sb $21,0($20)`
870
871	23	rhoads	`#a: SLL`
872			`ori $2,$0,'a'`
873			`sb $2,0($20)`
874	15	rhoads	`li $2,0x40414243`
875			`sll $3,$2,8`
876			`srl $3,$3,24`
877			`sb $3,0($20)`
878			`sb $21,0($20)`
879
880	23	rhoads	`#b: SLLV`
881			`ori $2,$0,'b'`
882			`sb $2,0($20)`
883	15	rhoads	`li $2,0x40414243`
884			`ori $3,$0,8`
885			`sllv $3,$2,$3`
886			`srl $3,$3,24`
887			`sb $3,0($20)`
888			`sb $21,0($20)`
889
890	23	rhoads	`#c: SRA`
891			`ori $2,$0,'c'`
892			`sb $2,0($20)`
893	15	rhoads	`li $2,0x40414243`
894			`sra $3,$2,16`
895			`sb $3,0($20)`
896			`li $2,0x84000000`
897			`sra $3,$2,25`
898			`sub $3,$3,0x80`
899			`sb $3,0($20)`
900			`sb $21,0($20)`
901
902	23	rhoads	`#d: SRAV`
903			`ori $2,$0,'d'`
904			`sb $2,0($20)`
905	15	rhoads	`li $2,0x40414243`
906			`ori $3,$0,16`
907			`srav $3,$2,$3`
908			`sb $3,0($20)`
909			`ori $3,$0,25`
910			`li $2,0x84000000`
911	29	rhoads	`srav $3,$2,$3`
912	15	rhoads	`sub $3,$3,0x80`
913			`sb $3,0($20)`
914			`sb $21,0($20)`
915
916	23	rhoads	`#e: SRL`
917			`ori $2,$0,'e'`
918			`sb $2,0($20)`
919	15	rhoads	`li $2,0x40414243`
920			`srl $3,$2,16`
921			`sb $3,0($20)`
922			`li $2,0x84000000`
923	29	rhoads	`srl $3,$2,25`
924	15	rhoads	`sb $3,0($20)`
925			`sb $21,0($20)`
926
927	23	rhoads	`#f: SRLV`
928			`ori $2,$0,'f'`
929			`sb $2,0($20)`
930	15	rhoads	`li $2,0x40414243`
931			`ori $3,$0,16`
932			`srlv $4,$2,$3`
933			`sb $4,0($20)`
934			`ori $3,$0,25`
935			`li $2,0x84000000`
936	29	rhoads	`srlv $3,$2,$3`
937	15	rhoads	`sb $3,0($20)`
938			`sb $21,0($20)`
939
940
941			`ori $2,$0,'D'`
942			`sb $2,0($20)`
943			`ori $2,$0,'o'`
944			`sb $2,0($20)`
945			`ori $2,$0,'n'`
946			`sb $2,0($20)`
947			`ori $2,$0,'e'`
948			`sb $2,0($20)`
949			`sb $21,0($20)`
950
951
952			`$DONE:`
953			`j $DONE`
954			`nop`
955
956			`.set reorder`
957			`.end entry`
958

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