[fpgaboy.git] / opcodes

YET UNIMPLEMENTED:

imm3  = 3-bit immediate value in 8 bits
imm8  = 8-bit immediate value
imm16 = 16-bit immediate value
16m8  = 8-bit value at the 16-bit address
8m8   = 8-bit value at the 8-bit address (the 16-bit equivalent is 0xFF00 + addr)

bits         insn                 notes
0000 1000    LD    16m16,SP      loads SP
0001 0000    STOP
0111 0110    HALT                 Danger! Helvetica!
1100 1011    -     -     -        see two-byte opcodes below
1110 1000    ADD   SP,   imm8
1111 1000    LDHL  SP,   imm8     load SP+n (signed n) into HL

*****************************

fucking two-byte opcodes

bits                   insn               notes
1100 1011 0000 0000    RLC   B
1100 1011 0000 0001    RLC   C
1100 1011 0000 0010    RLC   D
1100 1011 0000 0011    RLC   E
1100 1011 0000 0100    RLC   H
1100 1011 0000 0101    RLC   L
1100 1011 0000 0110    RLC   (HL)
1100 1011 0000 0111    RLC   A

1100 1011 0000 1000    RRC   B
1100 1011 0000 1001    RRC   C
1100 1011 0000 1010    RRC   D
1100 1011 0000 1011    RRC   E
1100 1011 0000 1100    RRC   H
1100 1011 0000 1101    RRC   L
1100 1011 0000 1110    RRC   (HL)
1100 1011 0000 1111    RRC   A

1100 1011 0001 0000    RL    B
1100 1011 0001 0001    RL    C
1100 1011 0001 0010    RL    D
1100 1011 0001 0011    RL    E
1100 1011 0001 0100    RL    H
1100 1011 0001 0101    RL    L
1100 1011 0001 0110    RL    (HL)
1100 1011 0001 0111    RL    A

1100 1011 0001 1000    RR    B
1100 1011 0001 1001    RR    C
1100 1011 0001 1010    RR    D
1100 1011 0001 1011    RR    E
1100 1011 0001 1100    RR    H
1100 1011 0001 1101    RR    L
1100 1011 0001 1110    RR    (HL)
1100 1011 0001 1111    RR    A

1100 1011 0010 0000    SLA   B
1100 1011 0010 0001    SLA   C
1100 1011 0010 0010    SLA   D
1100 1011 0010 0011    SLA   E
1100 1011 0010 0100    SLA   H
1100 1011 0010 0101    SLA   L
1100 1011 0010 0110    SLA   (HL)
1100 1011 0010 0111    SLA   A

1100 1011 0010 1000    SRA   B
1100 1011 0010 1001    SRA   C
1100 1011 0010 1010    SRA   D
1100 1011 0010 1011    SRA   E
1100 1011 0010 1100    SRA   H
1100 1011 0010 1101    SRA   L
1100 1011 0010 1110    SRA   (HL)
1100 1011 0010 1111    SRA   A

1100 1011 0011 1000    SRL   B
1100 1011 0011 1001    SRL   C
1100 1011 0011 1010    SRL   D
1100 1011 0011 1011    SRL   E
1100 1011 0011 1100    SRL   H
1100 1011 0011 1101    SRL   L
1100 1011 0011 1110    SRL   (HL)
1100 1011 0011 1111    SRL   A

1100 1011 0011 0000    SWAP  B            swaps upper and lower nibbles of a byte
1100 1011 0011 0001    SWAP  C
1100 1011 0011 0010    SWAP  D
1100 1011 0011 0011    SWAP  E
1100 1011 0011 0100    SWAP  H
1100 1011 0011 0101    SWAP  L
1100 1011 0011 0110    SWAP  (HL)
1100 1011 0011 0111    SWAP  A

1100 1011 1000 0000    RES   imm3, B      reset bit specified by imm3
1100 1011 1000 0001    RES   imm3, C
1100 1011 1000 0010    RES   imm3, D
1100 1011 1000 0011    RES   imm3, E
1100 1011 1000 0100    RES   imm3, H
1100 1011 1000 0101    RES   imm3, L
1100 1011 1000 0110    RES   imm3, (HL)
1100 1011 1000 0111    RES   imm3, A

1100 1011 1100 0000    SET   imm3, B      set bit specified by imm3
1100 1011 1100 0001    SET   imm3, C
1100 1011 1100 0010    SET   imm3, D
1100 1011 1100 0011    SET   imm3, E
1100 1011 1100 0100    SET   imm3, H
1100 1011 1100 0101    SET   imm3, L
1100 1011 1100 0110    SET   imm3, (HL)
1100 1011 1100 0111    SET   imm3, A
Commit	Line	Data
f9000d73 JW	1	YET UNIMPLEMENTED:
	2
	3	imm3 = 3-bit immediate value in 8 bits
	4	imm8 = 8-bit immediate value
	5	imm16 = 16-bit immediate value
	6	16m8 = 8-bit value at the 16-bit address
	7	8m8 = 8-bit value at the 8-bit address (the 16-bit equivalent is 0xFF00 + addr)
	8
	9	bits insn notes
f9000d73	10	0000 1000 LD 16m16,SP loads SP
f9000d73	11	0001 0000 STOP
f9000d73 JW	12	0111 0110 HALT Danger! Helvetica!
	13	1100 1011 - - - see two-byte opcodes below
	14	1110 1000 ADD SP, imm8
	15	1111 1000 LDHL SP, imm8 load SP+n (signed n) into HL
	16
	17	*****************************
	18
	19	fucking two-byte opcodes
	20
	21	bits insn notes
	22	1100 1011 0000 0000 RLC B
	23	1100 1011 0000 0001 RLC C
	24	1100 1011 0000 0010 RLC D
	25	1100 1011 0000 0011 RLC E
	26	1100 1011 0000 0100 RLC H
	27	1100 1011 0000 0101 RLC L
	28	1100 1011 0000 0110 RLC (HL)
	29	1100 1011 0000 0111 RLC A
	30
	31	1100 1011 0000 1000 RRC B
	32	1100 1011 0000 1001 RRC C
	33	1100 1011 0000 1010 RRC D
	34	1100 1011 0000 1011 RRC E
	35	1100 1011 0000 1100 RRC H
	36	1100 1011 0000 1101 RRC L
	37	1100 1011 0000 1110 RRC (HL)
	38	1100 1011 0000 1111 RRC A
	39
	40	1100 1011 0001 0000 RL B
	41	1100 1011 0001 0001 RL C
	42	1100 1011 0001 0010 RL D
	43	1100 1011 0001 0011 RL E
	44	1100 1011 0001 0100 RL H
	45	1100 1011 0001 0101 RL L
	46	1100 1011 0001 0110 RL (HL)
	47	1100 1011 0001 0111 RL A
	48
	49	1100 1011 0001 1000 RR B
	50	1100 1011 0001 1001 RR C
	51	1100 1011 0001 1010 RR D
	52	1100 1011 0001 1011 RR E
	53	1100 1011 0001 1100 RR H
	54	1100 1011 0001 1101 RR L
	55	1100 1011 0001 1110 RR (HL)
	56	1100 1011 0001 1111 RR A
	57
	58	1100 1011 0010 0000 SLA B
	59	1100 1011 0010 0001 SLA C
	60	1100 1011 0010 0010 SLA D
	61	1100 1011 0010 0011 SLA E
	62	1100 1011 0010 0100 SLA H
	63	1100 1011 0010 0101 SLA L
	64	1100 1011 0010 0110 SLA (HL)
	65	1100 1011 0010 0111 SLA A
	66
	67	1100 1011 0010 1000 SRA B
	68	1100 1011 0010 1001 SRA C
	69	1100 1011 0010 1010 SRA D
	70	1100 1011 0010 1011 SRA E
	71	1100 1011 0010 1100 SRA H
	72	1100 1011 0010 1101 SRA L
	73	1100 1011 0010 1110 SRA (HL)
	74	1100 1011 0010 1111 SRA A
	75
76	1100 1011 0011 1000 SRL B
77	1100 1011 0011 1001 SRL C
78	1100 1011 0011 1010 SRL D
79	1100 1011 0011 1011 SRL E
80	1100 1011 0011 1100 SRL H
81	1100 1011 0011 1101 SRL L
82	1100 1011 0011 1110 SRL (HL)
83	1100 1011 0011 1111 SRL A
84
85	1100 1011 0011 0000 SWAP B swaps upper and lower nibbles of a byte
86	1100 1011 0011 0001 SWAP C
87	1100 1011 0011 0010 SWAP D
88	1100 1011 0011 0011 SWAP E
89	1100 1011 0011 0100 SWAP H
90	1100 1011 0011 0101 SWAP L
91	1100 1011 0011 0110 SWAP (HL)
92	1100 1011 0011 0111 SWAP A
93
f9000d73 JW	94	1100 1011 1000 0000 RES imm3, B reset bit specified by imm3
	95	1100 1011 1000 0001 RES imm3, C
	96	1100 1011 1000 0010 RES imm3, D
	97	1100 1011 1000 0011 RES imm3, E
	98	1100 1011 1000 0100 RES imm3, H
	99	1100 1011 1000 0101 RES imm3, L
	100	1100 1011 1000 0110 RES imm3, (HL)
	101	1100 1011 1000 0111 RES imm3, A
	102
	103	1100 1011 1100 0000 SET imm3, B set bit specified by imm3
	104	1100 1011 1100 0001 SET imm3, C
	105	1100 1011 1100 0010 SET imm3, D
	106	1100 1011 1100 0011 SET imm3, E
	107	1100 1011 1100 0100 SET imm3, H
	108	1100 1011 1100 0101 SET imm3, L
	109	1100 1011 1100 0110 SET imm3, (HL)
	110	1100 1011 1100 0111 SET imm3, A