ZX81 opcodes

Dec	Hex	Character	z80	After CBh	After EDh
0	00	<space>	nop	rlc b
1	01	Zx81 chr 01.png	ld bc,nnnn	rlc c
2	02	Zx81 chr 02.png	ld (bc),a	rlc d
3	03	Zx81 chr 03.png	inc bc	rlc e
4	04	Zx81 chr 04.png	inc b	rlc h
5	05	Zx81 chr 05.png	dec b	rlc l
6	06	Zx81 chr 06.png	ld b,nn	rlc (hl)
7	07	Zx81 chr 07.png	rlca	rlc a
8	08	Zx81 chr 08.png	ex af,af'	rrc b
9	09	Zx81 chr 09.png	add hl,bc	rrc c
10	0A	Zx81 chr 0a.png	ld a,(bc)	rrc d
11	0B	"	dec bc	rrc e
12	0C	£	inc c	rrc h
13	0D	$	dec c	rrc l
14	0E	 :	ld c,nn	rrc (hl)
15	0F	 ?	rrca	rrc a
16	10	(	djnz nn	rl b
17	11	)	ld de,nnnn	rl c
18	12	>	ld (de),a	rl d
19	13	<	inc de	rl e
20	14	=	inc d	rl h
21	15	+	dec d	rl l
22	16	-	ld d,nn	rl (hl)
23	17	*	rla	rl a
24	18	/	jr nn	rr b
25	19	 ;	add hl,de	rr c
26	1A	,	ld a,(de)	rr d
27	1B	.	dec de	rr e
28	1C	0	inc e	rr h
29	1D	1	dec e	rr l
30	1E	2	ld e,nn	rr (hl)
31	1F	3	rra	rr a
32	20	4	jr nz,nn	sla b
33	21	5	ld hl,nnnn	sla c
34	22	6	ld (nnnn),hl	sla d
35	23	7	inc hl	sla e
36	24	8	inc h	sla h
37	25	9	dec h	sla l
38	26	A	ld h,nn	sla (hl)
39	27	B	daa	sla a
40	28	C	jr z,nn	sra b
41	29	D	add hl,hl	sra c
42	2A	E	ld hl,(nnnn)	sra d
43	2B	F	dec hl	sra e
44	2C	G	inc l	sra h
45	2D	H	dec l	sra l
46	2E	I	ld l,nn	sra (hl)
47	2F	J	cpl	sra a
48	30	K	jr nc,nn
49	31	L	ld sp,nnnn
50	32	M	ld (nnnn),a
51	33	N	inc sp
52	34	O	inc (hl)
53	35	P	dec (hl)
54	36	Q	ld (hl),nn
55	37	R	scf
56	38	S	jr c,nn	srl b
57	39	T	add hl,sp	srl c
58	3A	U	ld a,(nnnn)	srl d
59	3B	V	dec sp	srl e
60	3C	W	inc a	srl h
61	3D	X	dec a	srl l
62	3E	Y	ld a,nn	srl (hl)
63	3F	Z	ccf	srl a
64	40	RND	ld b,b	bit 0,b	in b,(c)
65	41	INKEY$	ld b,c	bit 0,c	out (c),b
66	42	PI	ld b,d	bit 0,d	sbc hl,bc
67	43	not used	ld b,e	bit 0,e	ld (nnnn),bc
68	44	not used	ld b,h	bit 0,h	neg
69	45	not used	ld b,l	bit 0,l	retn
70	46	not used	ld b,(hl)	bit 0,(hl)	im 0
71	47	not used	ld b,a	bit 0,a	ld i,a
72	48	not used	ld c,b	bit 1,b	in c,(c)
73	49	not used	ld c,c	bit 1,c	out (c),c
74	4A	not used	ld c,d	bit 1,d	adc hl,bc
75	4B	not used	ld c,e	bit 1,e	ld bc,(nnnn)
76	4C	not used	ld c,h	bit 1,h
77	4D	not used	ld c,l	bit 1,l	reti
78	4E	not used	ld c,(hl)	bit 1,(hl)
79	4F	not used	ld c,a	bit 1,a	ld r,a
80	50	not used	ld d,b	bit 2,b	in d,(c)
81	51	not used	ld d,c	bit 2,c	out (c),d
82	52	not used	ld d,d	bit 2,d	sbc hl,de
83	53	not used	ld d,e	bit 2,e	ld (nnnn),de
84	54	not used	ld d,h	bit 2,h
85	55	not used	ld d,l	bit 2,l
86	56	not used	ld d,(hl)	bit 2,(hl)	im 1
87	57	not used	ld d,a	bit 2,a	ld a,i
88	58	not used	ld e,b	bit 3,b	in e,(c)
89	59	not used	ld e,c	bit 3,c	out (c),e
90	5A	not used	ld e,d	bit 3,d	adc hl,de
91	5B	not used	ld e,e	bit 3,e	ld de,(nnnn)
92	5C	not used	ld e,h	bit 3,h
93	5D	not used	ld e,l	bit 3,l
94	5E	not used	ld e,(hl)	bit 3,(hl)	im 2
95	5F	not used	ld e,a	bit 3,a	ld a,r
96	60	not used	ld h,b	bit 4,b	in h,(c)
97	61	not used	ld h,c	bit 4,c	out (c),h
98	62	not used	ld h,d	bit 4,d	sbc hl,hl
99	63	not used	ld h,e	bit 4,e	ld (nnnn),hl
100	64	not used	ld h,h	bit 4,h	rrd
101	65	not used	ld h,l	bit 4,l	in l,(c)
102	66	not used	ld h,(hl)	bit 4,(hl)	out (c),l
103	67	not used	ld h,a	bit 4,a	rrd
104	68	not used	ld l,b	bit 5,b	in l,(c)
105	69	not used	ld l,c	bit 5,c	out (c),l
106	6A	not used	ld l,d	bit 5,d	adc hl,hl
107	6B	not used	ld l,e	bit 5,e	ld de,(nnnn)
108	6C	not used	ld l,h	bit 5,h
109	6D	not used	ld l,l	bit 5,l
110	6E	not used	ld l,(hl)	bit 5,(hl)
111	6F	not used	ld l,a	bit 5,a	rld
112	70	Cursor up	ld (hl),b	bit 6,b
113	71	Cursor down	ld (hl),c	bit 6,c
114	72	Cursor left	ld (hl),d	bit 6,d	sbc hl,sp
115	73	Cursor Right	ld (hl),e	bit 6,e	ld (nnnn),sp
116	74	GRAPHICS	ld (hl),h	bit 6,h
117	75	EDIT	ld (hl),l	bit 6,l
118	76	NEWLINE	halt	bit 6,(hl)
119	77	RUBOUT	ld (hl),a	bit 6,a
120	78	K/L mode	ld a,b	bit 7,b	in a,(c)
121	79	FUNCTION	ld a,c	bit 7,c	out (c),a
122	7A	not used	ld a,d	bit 7,d	adc hl,sp
123	7B	not used	ld a,e	bit 7,e	ld sp,(nnnn)
124	7C	not used	ld a,h	bit 7,h
125	7D	not used	ld a,l	bit 7,l
126	7E	number	ld a,(hl)	bit 7,(hl)
127	7F	Cursor	ld a,a	bit 7,a
128	80	Zx81 chr 80.png	add b	res 0,b
129	81	Zx81 chr 81.png	add c	res 0,c
130	82	Zx81 chr 82.png	add d	res 0,d
131	83	Zx81 chr 83.png	add e	res 0,e
132	84	Zx81 chr 84.png	add h	res 0,h
133	85	Zx81 chr 85.png	add l	res 0,l
134	86	Zx81 chr 86.png	add (hl)	res 0,(hl)
135	87	Zx81 chr 87.png	add a	res 0,a
136	88	Zx81 chr 88.png	adc b	res 1,b
137	89	Zx81 chr 89.png	adc c	res 1,c
138	8A	Zx81 chr 8a.png	adc d	res 1,d
139	8B	 " 	adc e	res 1,e
140	8C	 £ 	adc h	res 1,h
141	8D	 $ 	adc l	res 1,l
142	8E	 : 	adc (hl)	res 1,(hl)
143	8F	 ? 	adc a	res 1,a
144	90	 ( 	sub b	res 2,b
145	91	 ) 	sub c	res 2,c
146	92	 > 	sub d	res 2,d
147	93	 < 	sub e	res 2,e
148	94	 = 	sub h	res 2,h
149	95	 + 	sub l	res 2,l
150	96	 - 	sub (hl)	res 2,(hl)
151	97	 * 	sub a	res 2,a
152	98	 / 	sbc b	res 3,b
153	99	 ; 	sbc c	res 3,c
154	9A	 , 	sbc d	res 3,d
155	9B	 . 	sbc e	res 3,e
156	9C	 0 	sbc h	res 3,h
157	9D	 1 	sbc l	res 3,l
158	9E	 2 	sbc (hl)	res 3,(hl)
159	9F	 3 	sbc a	res 3,a
160	A0	 4 	and b	res 4,b	ldi
161	A1	 5 	and c	res 4,c	cpi
162	A2	 6 	and d	res 4,d	ini
163	A3	 7 	and e	res 4,e	outi
164	A4	 8 	and h	res 4,h
165	A5	 9 	and l	res 4,l
166	A6	 A 	and (hl)	res 4,(hl)
167	A7	 B 	and a	res 4,a
168	A8	 C 	xor b	res 5,b	ldd
169	A9	 D 	xor c	res 5,c	cpd
170	AA	 E 	xor d	res 5,d	ind
171	AB	 F 	xor e	res 5,e	outd
172	AC	 G 	xor h	res 5,h
173	AD	 H 	xor l	res 5,l
174	AE	 I 	xor (hl)	res 5,(hl)
175	AF	 J 	xor a	res 5,a
176	B0	 K 	or b	res 6,b	ldir
177	B1	 L 	or c	res 6,c	cpir
178	B2	 M 	or d	res 6,d	inir
179	B3	 N 	or e	res 6,e	otir
180	B4	 O 	or h	res 6,h
181	B5	 P 	or l	res 6,l
182	B6	 Q 	or (hl)	res 6,(hl)
183	B7	 R 	or a	res 6,a
184	B8	 S 	cp b	res 7,b	lddr
185	B9	 T 	cp c	res 7,c	cpdr
186	BA	 U 	cp d	res 7,d	indr
187	BB	 V 	cp e	res 7,e	otdr
188	BC	 W 	cp h	res 7,h
189	BD	 X 	cp l	res 7,l
190	BE	 Y 	cp (hl)	res 7,(hl)
191	BF	 Z 	cp a	res 7,a
192	C0	 ""	ret nz	set 0,b
193	C1	AT	pop bc	set 0,c
194	C2	TAB	jp nz,nnnn	set 0,d
195	C3	not used	jp nnnn	set 0,e
196	C4	CODE	call nz,nnnn	set 0,h
197	C5	VAL	push bc	set 0,l
198	C6	LEN	add a,nn	set 0,(hl)
199	C7	SIN	rst 00h	set 0,a
200	C8	COS	ret z	set 1,b
201	C9	TAN	ret	set 1,c
202	CA	ASN	jp z,nnnn	set 1,d
203	CB	ACS	CB	set 1,e
204	CC	ATN	call z,nnnn	set 1,h
205	CD	LN	call nnnn	set 1,l
206	CE	EXP	adc a,nn	set 1,(hl)
207	CF	INT	rst 08h	set 1,a
208	D0	SQR	ret nc	set 2,b
209	D1	SGN	pop de	set 2,c
210	D2	ABS	jp nc,nnnn	set 2,d
211	D3	PEEK	out (nn),a	set 2,e
212	D4	USR	call nc,nnnn	set 2,h
213	D5	STR$	push de	set 2,l
214	D6	CHR$	sub nn	set 2,(hl)
215	D7	NOT	rst 10h	set 2,a
216	D8	**	ret c	set 3,b
217	D9	OR	exx	set 3,c
218	DA	AND	jp c,nnnn	set 3,d
219	DB	<=	in a,(nn)	set 3,e
220	DC	>=	call c,nnnn	set 3,h
221	DD	<>	Prefixes IX instructions	set 3,l
222	DE	THEN	sbc a,nn	set 3,(hl)
223	DF	TO	rst 18h	set 3,a
224	E0	STEP	ret po	set 4,b
225	E1	LPRING	pop hl	set 4,c
226	E2	LLIST	jp po,nnnn	set 4,d
227	E3	STOP	ex (sp),hl	set 4,e
228	E4	SLOW	call po,nnnn	set 4,h
229	E5	FAST	push hl	set 4,l
230	E6	NEW	and nn	set 4,(hl)
231	E7	SCROLL	rst 20h	set 4,a
232	E8	CONT	ret pe	set 5,b
233	E9	DIM	jp (hl)	set 5,c
234	EA	REM	jp pe,nnnn	set 5,d
235	EB	FOR	ex de,hl	set 5,e
236	EC	GOTO	call pe,nnnn	set 5,h
237	ED	GOSUB	Prefixes ED instructions	set 5,l
238	EE	INPUT	xor nn	set 5,(hl)
239	EF	LOAD	rst 28h	set 5,a
240	F0	LIST	ret p	set 6,b
241	F1	LET	pop af	set 6,c
242	F2	PAUSE	jp p,nnnn	set 6,d
243	F3	NEXT	di	set 6,e
244	F4	POKE	call p,nnnn	set 6,h
245	F5	PRINT	push af	set 6,l
246	F6	PLOT	or nn	set 6,(hl)
247	F7	RUN	rst 30h	set 6,a
248	F8	SAVE	ret m	set 7,b
249	F9	RAND	ld sp,hl	set 7,c
250	FA	IF	jp m,nnnn	set 7,d
251	FB	CLS	ei	set 7,e
252	FC	UNPLOT	call m,nnnn	set 7,h
253	FD	CLEAR	Prefixes IY instructions	set 7,l
254	FE	RETURN	cp nn	set 7,(hl)
255	FF	COPY	rst 38h	set 7,a

#Attribution: I grabbed this from Salkin's wiki but simply in plain text https://www.salkin.co.uk/~wiki/index.php/ZX81 - see also retro8bitcomputers.co.uk/Content/downloads/manuals/zx81-basic-manual.pdf