LSC-8

	A	B	C	D	E	G	H	I	J
1	LSC-8 ISA
2	Index Register Instructions Load instructions do not affect any flag. The Inc and Dec instructions affect all flags except carry.
3	Accumulator Group Instructions The result of an ALU instruction affect all flags. The rotation instructions only affect the carry flag.
4	Program Counter and Stack Control Instructions					SSS	Source Reg
5	Input/Output Instructions					DDD	Destination Reg
6	Machine Instructions					registers
7	Mnemonic	Len	Opcode	Action	Flags	A	000
8	MOV Rd, Rs	1	11 DDD SSS	Rd = Rs		B	001
9	MOV Rd, M	1	11 DDD 111	Rd = Mem		C	010
10	MOV M, Rs	1	11 111 SSS	Mem = Rs		D	011
11	MVI Rd, Imm	2	00 DDD 110	Rd = Immed Value		E	100
12	MVI M, Imm	2	00 111 110	Mem = Immed Value		H	101
13	INC Rd	1	00 DDD 000	Rd = Rd+ 1 (Rd ≠ M)	P, S, Z, x	L	110
14	DEC Rd	1	00 DDD 001	Rd = Rd- 1 (Rd ≠ M)	P, S, Z, x	Mem	111
15	PUSH Rs	1	01 SSS 100	Push SSS to Stack
16	PUSH M	1	01 111 100	Push Mem to stack
17	PUSH Imm	2	00 110 010	Push Imm to Stack
18	POP Rd	1	01 DDD 110	Pop to DDD from Stack
19	POP M	1	01 111 110	Pop to Mem from Stack
20	CLC/STC/CLI/STI	1	00 FS0 101	SET/CLR Flags: F - Flag (0=C, 1=I), S - State (0=CLR, 1=SET)
21	ADD A, Rs	1	10 000 SSS	A = A + Rs	P, S, Z, C
22	ADD A, M	1	10 000 111	A = A + Mem	P, S, Z, C
23	ADI A, Imm	2	00 000 100	A = A + Immed Value	P, S, Z, C
24	ADC A, Rs	1	10 001 SSS	A = A + Carry + Rs	P, S, Z, C	Flag flip-flops are defined by C4C3: carry (00 - overflow or underflow), zero (01 - result is zero), sign (10 - MSB of result is "1"), parity (11 - parity is even).
25	ADC A, M	1	10 001 111	A = A + Carry + Mem	P, S, Z, C
26	ACI A, Imm	2	00 001 100	A = A + Carry + Immed Value	P, S, Z, C
27	SUB A, Rs	1	10 010 SSS	A = A - Rs	P, S, Z, C
28	SUB A, M	1	10 010 111	A = A - Mem	P, S, Z, C
29	SUI A, Imm	2	00 010 100	A = A - Immed Value	P, S, Z, C
30	SBB A, Rs	1	10 011 SSS	A = A - (Carry + Rs)	P, S, Z, C	M/IO	S1	S0	Characteristics
31	SBB A, M	1	10 011 111	A = A - (Carry + Mem)	P, S, Z, C	1	1	1	Interrupt Acknowledge
32	SCI A, Imm	2	00 011 100	A = A - (Carry + Immed Value)	P, S, Z, C	1	1	0	Read I/O Port
33	ANA Rs	1	10 100 SSS	A = A ∧ Rs	P, S, Z, c0	1	0	1	Write I/O Port
34	ANA M	1	10 100 111	A = A ∧ Mem	P, S, Z, c0	1	0	0	None; Idle
35	ANI	2	00 100 100	A = A ∧ Immed Value	P, S, Z, c0	0	1	1	Halt
36	XRA Rs	1	10 101 SSS	A = A ⊕ Rs	P, S, Z, c0	0	1	0	Read Memory
37	XRA M	1	10 101 111	A = A ⊕ Mem	P, S, Z, c0	0	0	1	Write Memory
38	XRI	2	00 101 100	A = A ⊕ Immed Value	P, S, Z, c0	0	0	0	None; Idle
39	ORA Rs	1	10 110 SSS	A = A ∨ Rs	P, S, Z, c0
40	ORA M	1	10 110 111	A = A ∨ Mem	P, S, Z, c0	00xx	math		ДОБАВИТЬ!!!
41	ORI	2	00 110 100	A = A ∨ Immed Value	P, S, Z, c0	01xx	logic		NOP
42	CMP Rs	1	10 111 SSS	Compare A with Rs, set flags	P, S, Z, C	10xx	rotate		NOT
43	CMP M	1	10 111 111	Compare A with Mem, set flags	P, S, Z, C	11xx	inc/dec		NEG
44	CPI	2	00 111 100	Compare A with Immed Value, set flags	P, S, Z, C				TEST
45	RLC	1	00 000 010	Rotate A Left Once	x, x, x, C	0000	add		MUL
46	RRC	1	00 001 010	Rotate A Right Once	x, x, x, C	0001	adc		DIV
47	RAL	1	00 010 010	Rotate A Left Through Carry Once	x, x, x, C	0010	sub		SHR
48	RAR	1	00 011 010	Rotate A Right Through Carry Once	x, x, x, C	0011	sbb		SHL
49	JMP	3	00 111 000	Unconditional Jump to immed address		0100	ana		SAR
50	JNC, JAE, JNB	3	01 000 000	If carry = 0, jump to immed address		0101	xra		SAL
51	JNZ, JNE	3	01 001 000	If result ≠ 0, jump to immed address		0110	ora		пересмотреть
52	JNS	3	01 010 000	If sign = 0 (positive), jump to immed address		0111	cmp		RET Cond
53	JPO, JNS	3	01 011 000	If parity = 0 (odd), jump to immed address		1000	rlc		CALL Cond
54	JC, JB, JNAE	3	01 100 000	If carry = 1, jump to immed address		1001	rrc
55	JZ, JE	3	01 101 000	If result = 0, jump to immed address		1010	ral
56	JS	3	01 110 000	If sign = 1 (negative), jump to immed address		1011	rar
57	JPE, JP	3	01 111 000	If parity = 1 (even), jump to immed address		1100	INC
58	CALL	3	00 111 001	Save current address onto the stack and jump to immed address		1110	DEC
59	CNC	3	01 000 010	If carry = 0, save current address and jump to immed address
60	CNZ	3	01 001 010	If result ≠ 0, save current address and jump to immed address
61	CP	3	01 010 010	If sign = 0 (positive), save current address and jump to immed address
62	CPO	3	01 011 010	If parity = 0 (odd), save current address and jump to immed address
63	CC	3	01 100 010	If carry = 1, save current address and jump to immed address
64	CZ	3	01 101 010	If result = 0, save current address and jump to immed address
65	CM	3	01 110 010	If sign = 1 (negative), save current address and jump to immed address
66	CPE	3	01 111 010	If parity = 1 (even), save current address and jump to immed address
67	RET	1	00 100 010	Unconditionally return, down one stack level
68	RNC	1	00 000 011	If carry = 0, return, down one stack level
69	RNZ	1	00 001 011	If result ≠ 0, return, down one stack level
70	RP	1	00 010 011	If sign = 0 (positive), return, down one stack level
71	RPO	1	00 011 011	If parity = 0 (odd), return, down one stack level
72	RC	1	00 100 011	If carry = 1, return, down one stack level
73	RZ	1	00 101 011	If result = 0, return, down one stack level
74	RM	1	00 110 011	If sign = 1 (negative), return, down one stack level
75	RPE	1	00 111 011	If parity = 1 (even), return, down one stack level
76	IN	1	01 0MM MM1	A = PORT[MMMM]
77	OUT	1	01 1MM MM1	PORT[MMM] = A
78	HLT	1	11 111 111	Enter STOPPED state; remain there until interrupted
79	INT	2	00 101 010
80	IRET	1	00 111 010