Instruction Set

Move

NOP = No Operation

Hex Mnemonic Cycles
FF NOP 8

Flags Affected: None

MOV = Move Register

8 Bit Opcode overview

16 Bit Opcode overview

Hex Mnemonic Cycles
40 MOV A, A 4
41 MOV A, B 4
42 MOV A, L 4
43 MOV A, H 4
44 nn MOV A, [N+#nn] 12
45 MOV A, [HL] 8
46 MOV A, [X] 8
47 MOV A, [Y] 8
48 MOV B, A 4
49 MOV B, B 4
4A MOV B, L 4
4B MOV B, H 4
4C nn MOV B, [N+#nn] 12
4D MOV B, [HL] 8
4E MOV B, [X] 8
4F MOV B, [Y] 8
50 MOV L, A 4
51 MOV L, B 4
52 MOV L, L 4
53 MOV L, H 4
54 nn MOV L, [N+#nn] 12
55 MOV L, [HL] 8
56 MOV L, [X] 8
57 MOV L, [Y] 8
58 MOV H, A 4
59 MOV H, B 4
5A MOV H, L 4
5B MOV H, H 4
5C nn MOV H, [N+#nn] 12
5D MOV H, [HL] 8
5E MOV H, [X] 8
5F MOV H, [Y] 8
60 MOV [X], A 8
61 MOV [X], B 8
62 MOV [X], L 8
63 MOV [X], H 8
64 nn MOV [X], [N+#nn] 16
65 MOV [X], [HL] 12
66 MOV [X], [X] 12
67 MOV [X], [Y] 12
68 MOV [HL], A 8
69 MOV [HL], B 8
6A MOV [HL], L 8
6B MOV [HL], H 8
6C nn MOV [HL], [N+#nn] 16
6D MOV [HL], [HL] 12
6E MOV [HL], [X] 12
6F MOV [HL], [Y] 12
70 MOV [Y], A 8
71 MOV [Y], B 8
72 MOV [Y], L 8
73 MOV [Y], H 8
74 nn MOV [Y], [N+#nn] 16
75 MOV [Y], [HL] 12
76 MOV [Y], [X] 12
77 MOV [Y], [Y] 12
78 nn MOV [N+#nn], A 12
79 nn MOV [N+#nn], B 12
7A nn MOV [N+#nn], L 12
7B nn MOV [N+#nn], H 12
7D nn MOV [N+#nn], [HL] 16
7E nn MOV [N+#nn], [X] 16
7F nn MOV [N+#nn], [Y] 16
9F nn MOV F, #nn 12
B0 nn MOV A, #nn 8
B1 nn MOV B, #nn 8
B2 nn MOV L, #nn 8
B3 nn MOV H, #nn 8
B4 nn MOV N, #nn 8
B5 nn MOV [HL], #nn 12
B6 nn MOV [X], #nn 12
B7 nn MOV [Y], #nn 12
DD nn nn MOV [N+#nn], #nn 16
CE C4 nn MOV U, #nn 16
CE C5 nn MOV I, #nn 12
CE C6 nn MOV XI, #nn 12
CE C7 nn MOV YI, #nn 12
CE 40 ss MOV A, [X+#ss] 16
CE 41 ss MOV A, [Y+#ss] 16
CE 42 MOV A, [X+L] 16
CE 43 MOV A, [Y+L] 16
CE 48 ss MOV B, [X+#ss] 16
CE 49 ss MOV B, [Y+#ss] 16
CE 4A MOV B, [X+L] 16
CE 4B MOV B, [Y+L] 16
CE 50 ss MOV L, [X+#ss] 16
CE 51 ss MOV L, [Y+#ss] 16
CE 52 MOV L, [X+L] 16
CE 53 MOV L, [Y+L] 16
CE 58 ss MOV H, [X+#ss] 16
CE 59 ss MOV H, [Y+#ss] 16
CE 5A MOV H, [X+L] 16
CE 5B MOV H, [Y+L] 16
CE 44 ss MOV [X+#ss], A 16
CE 45 ss MOV [Y+#ss], A 16
CE 46 MOV [X+L], A 16
CE 47 MOV [Y+L], A 16
CE 4C ss MOV [X+#ss], B 16
CE 4D ss MOV [Y+#ss], B 16
CE 4E MOV [X+L], B 16
CE 4F MOV [Y+L], B 16
CE 54 ss MOV [X+#ss], L 16
CE 55 ss MOV [Y+#ss], L 16
CE 56 MOV [X+L], L 16
CE 57 MOV [Y+L], L 16
CE 5C ss MOV [X+#ss], H 16
CE 5D ss MOV [Y+#ss], H 16
CE 5E MOV [X+L], H 16
CE 5F MOV [Y+L], H 16
CE 60 ss MOV [HL], [X+#ss] 20
CE 61 ss MOV [HL], [Y+#ss] 20
CE 62 MOV [HL], [X+L] 20
CE 63 MOV [HL], [Y+L] 20
CE 68 ss MOV [X], [X+#ss] 20
CE 69 ss MOV [X], [Y+#ss] 20
CE 6A MOV [X], [X+L] 20
CE 6B MOV [X], [Y+L] 20
CE 78 ss MOV [Y], [X+#ss] 20
CE 79 ss MOV [Y], [Y+#ss] 20
CE 7A MOV [Y], [X+L] 20
CE 7B MOV [Y], [Y+L] 20
B8 nn nn MOV BA, [#nnnn] 20
B9 nn nn MOV HL, [#nnnn] 20
BA nn nn MOV X, [#nnnn] 20
BB nn nn MOV Y, [#nnnn] 20
CF 78 nn nn MOV SP, [#nnnn] 24
BC nn nn MOV [#nnnn], BA 20
BD nn nn MOV [#nnnn], HL 20
BE nn nn MOV [#nnnn], X 20
BF nn nn MOV [#nnnn], Y 20
CF 7C nn nn MOV [#nnnn], SP 24
C4 nn nn MOV BA, #nnnn 12
C5 nn nn MOV HL, #nnnn 12
C6 nn nn MOV X, #nnnn 12
C7 nn nn MOV Y, #nnnn 12
CF 6E nn nn MOV SP, #nnnn 16
CE C0 MOV A, N 8
CE C1 MOV A, F 8
CE C8 MOV A, V 8
CE C9 MOV A, I 8
CE CA MOV A, XI 8
CE CB MOV A, YI 8
CE C2 MOV N, A 8
CE C3 MOV F, A 12
CE CC MOV U, A 12
CE CD MOV I, A 8
CE CE MOV XI, A 8
CE CF MOV YI, A 8
CE D0 nn nn MOV A, [#nnnn] 20
CE D1 nn nn MOV B, [#nnnn] 20
CE D2 nn nn MOV L, [#nnnn] 20
CE D3 nn nn MOV H, [#nnnn] 20
CE D4 nn nn MOV [#nnnn], A 20
CE D5 nn nn MOV [#nnnn], B 20
CE D6 nn nn MOV [#nnnn], L 20
CE D7 nn nn MOV [#nnnn], H 20
CF 70 ss MOV BA, [SP+#ss] 24
CF 71 ss MOV HL, [SP+#ss] 24
CF 72 ss MOV X, [SP+#ss] 24
CF 73 ss MOV Y, [SP+#ss] 24
CF 74 ss MOV [SP+#ss], BA 24
CF 75 ss MOV [SP+#ss], HL 24
CF 76 ss MOV [SP+#ss], X 24
CF 77 ss MOV [SP+#ss], Y 24
CF C0 MOV BA, [HL] 20
CF C1 MOV HL, [HL] 20
CF C2 MOV X, [HL] 20
CF C3 MOV Y, [HL] 20
CF D0 MOV BA, [X] 20
CF D1 MOV HL, [X] 20
CF D2 MOV X, [X] 20
CF D3 MOV Y, [X] 20
CF D8 MOV BA, [Y] 20
CF D9 MOV HL, [Y] 20
CF DA MOV X, [Y] 20
CF DB MOV Y, [Y] 20
CF C4 MOV [HL], BA 20
CF C5 MOV [HL], HL 20
CF C6 MOV [HL], X 20
CF C7 MOV [HL], Y 20
CF D4 MOV [X], BA 20
CF D5 MOV [X], HL 20
CF D6 MOV [X], X 20
CF D7 MOV [X], Y 20
CF DC MOV [Y], BA 20
CF DD MOV [Y], HL 20
CF DE MOV [Y], X 20
CF DF MOV [Y], Y 20
CF E0 MOV BA, BA 8
CF E1 MOV BA, HL 8
CF E2 MOV BA, X 8
CF E3 MOV BA, Y 8
CF E4 MOV HL, BA 8
CF E5 MOV HL, HL 8
CF E6 MOV HL, X 8
CF E7 MOV HL, Y 8
CF E8 MOV X, BA 8
CF E9 MOV X, HL 8
CF EA MOV X, X 8
CF EB MOV X, Y 8
CF EC MOV Y, BA 8
CF ED MOV Y, HL 8
CF EE MOV Y, X 8
CF EF MOV Y, Y 8
CF F0 MOV SP, BA 8
CF F1 MOV SP, HL 8
CF F2 MOV SP, X 8
CF F3 MOV SP, Y 8
CF F4 MOV HL, SP 8
CF F5 MOV HL, PC 8
CF F8 MOV BA, SP 8
CF F9 MOV BA, PC 8
CF FA MOV X, SP 8
CF FE MOV Y, SP 8

Flags Affected: None

Arithmetic

ADD = Addition

8 Bit Opcode overview

16 Bit Opcode overview

Hex Mnemonic Cycles
00 ADD A, A 8
01 ADD A, B 8
02 nn ADD A, #nn 8
03 ADD A, [HL] 8
04 nn ADD A, [N+#nn] 12
05 nn nn ADD A, [#nnnn] 16
06 ADD A, [X] 8
07 ADD A, [Y] 8
C0 nn nn ADD BA, #nnnn 12
C1 nn nn ADD HL, #nnnn 12
C2 nn nn ADD X, #nnnn 12
C3 nn nn ADD Y, #nnnn 12
CF 68 nn nn ADD SP, #nnnn 16
CE 00 ss ADD A, [X+#ss] 16
CE 01 ss ADD A, [Y+#ss] 16
CE 02 ADD A, [X+L] 16
CE 03 ADD A, [Y+L] 16
CE 04 ADD [HL], A 16
CE 05 nn ADD [HL], #nn 20
CE 06 ADD [HL], [X] 20
CE 07 ADD [HL], [Y] 20
CF 00 ADD BA, BA 16
CF 01 ADD BA, HL 16
CF 02 ADD BA, X 16
CF 03 ADD BA, Y 16
CF 20 ADD HL, BA 16
CF 21 ADD HL, HL 16
CF 22 ADD HL, X 16
CF 23 ADD HL, Y 16
CF 40 ADD X, BA 16
CF 41 ADD X, HL 16
CF 42 ADD Y, BA 16
CF 43 ADD Y, HL 16
CF 44 ADD SP, BA 16
CF 45 ADD SP, HL 16

Flags Affected: All

SUB = Subtraction

8 Bit Opcode overview

16 Bit Opcode overview

Hex Mnemonic Cycles
10 SUB A, A 8
11 SUB A, B 8
12 nn SUB A, #nn 8
13 SUB A, [HL] 8
14 nn SUB A, [N+#nn] 12
15 nn nn SUB A, [#nnnn] 16
16 SUB A, [X] 8
17 SUB A, [Y] 8
D0 nn nn SUB BA, #nnnn 12
D1 nn nn SUB HL, #nnnn 12
D2 nn nn SUB X, #nnnn 12
D3 nn nn SUB Y, #nnnn 12
CF 6A nn nn SUB SP, #nnnn 16
CE 10 ss SUB A, [X+#ss] 16
CE 11 ss SUB A, [Y+#ss] 16
CE 12 SUB A, [X+L] 16
CE 13 SUB A, [Y+L] 16
CE 14 SUB [HL], A 16
CE 15 nn SUB [HL], #nn 20
CE 16 SUB [HL], [X] 20
CE 17 SUB [HL], [Y] 20
CF 08 SUB BA, BA 16
CF 09 SUB BA, HL 16
CF 0A SUB BA, X 16
CF 0B SUB BA, Y 16
CF 28 SUB HL, BA 16
CF 29 SUB HL, HL 16
CF 2A SUB HL, X 16
CF 2B SUB HL, Y 16
CF 48 SUB X, BA 16
CF 49 SUB X, HL 16
CF 4A SUB Y, BA 16
CF 4B SUB Y, HL 16
CF 4C SUB SP, BA 16
CF 4D SUB SP, HL 16

Flags Affected: All

ADC = Addition with Carry

8 Bit Opcode overview

16 Bit Opcode overview

Hex Mnemonic Cycles
08 ADC A, A 8
09 ADC A, B 8
0A nn ADC A, #nn 8
0B ADC A, [HL] 8
0C nn ADC A, [N+#nn] 12
0D nn nn ADC A, [#nnnn] 16
0E ADC A, [X] 8
0F ADC A, [Y] 8
CE 08 ss ADC A, [X+#ss] 16
CE 09 ss ADC A, [Y+#ss] 16
CE 0A ADC A, [X+L] 16
CE 0B ADC A, [Y+L] 16
CE 0C ADC [HL], A 16
CE 0D nn ADC [HL], #nn 20
CE 0E ADC [HL], [X] 20
CE 0F ADC [HL], [Y] 20
CF 04 ADC BA, BA 16
CF 05 ADC BA, HL 16
CF 06 ADC BA, X 16
CF 07 ADC BA, Y 16
CF 24 ADC HL, BA 16
CF 25 ADC HL, HL 16
CF 26 ADC HL, X 16
CF 27 ADC HL, Y 16
CF 60 nn nn ADC BA, #nnnn 16
CF 61 nn nn ADC HL, #nnnn 16

Flags Affected: All

SBC = Subtraction with Carry

8 Bit Opcode overview

16 Bit Opcode overview

Hex Mnemonic Cycles
18 SBC A, A 8
19 SBC A, B 8
1A nn SBC A, #nn 8
1B SBC A, [HL] 8
1C nn SBC A, [N+#nn] 12
1D nn nn SBC A, [#nnnn] 16
1E SBC A, [X] 8
1F SBC A, [Y] 8
CE 18 ss SBC A, [X+#ss] 16
CE 19 ss SBC A, [Y+#ss] 16
CE 1A SBC A, [X+L] 16
CE 1B SBC A, [Y+L] 16
CE 1C SBC [HL], A 16
CE 1D nn SBC [HL], #nn 20
CE 1E SBC [HL], [X] 20
CE 1F SBC [HL], [Y] 20
CF 0C SBC BA, BA 16
CF 0D SBC BA, HL 16
CF 0E SBC BA, X 16
CF 0F SBC BA, Y 16
CF 2C SBC HL, BA 16
CF 2D SBC HL, HL 16
CF 2E SBC HL, X 16
CF 2F SBC HL, Y 16
CF 62 nn nn SBC BA, #nnnn 16
CF 63 nn nn SBC HL, #nnnn 16

Flags Affected: All

CMP = Compare

8 Bit Opcode overview

16 Bit Opcode overview

Hex Mnemonic Cycles
30 CMP A, A 8
31 CMP A, B 8
32 nn CMP A, #nn 8
33 CMP A, [HL] 8
34 nn CMP A, [N+#nn] 12
35 nn nn CMP A, [#nnnn] 16
36 CMP A, [X] 8
37 CMP A, [Y] 8
D4 nn nn CMP BA, #nnnn 12
D5 nn nn CMP HL, #nnnn 12
D6 nn nn CMP X, #nnnn 12
D7 nn nn CMP Y, #nnnn 12
CF 6C nn nn CMP SP, #nnnn 16
DB nn nn CMP [N+#nn], #nn 16
CE 30 ss CMP A, [X+#ss] 16
CE 31 ss CMP A, [Y+#ss] 16
CE 32 CMP A, [X+L] 16
CE 33 CMP A, [Y+L] 16
CE 34 CMP [HL], A 16
CE 35 nn CMP [HL], #nn 20
CE 36 CMP [HL], [X] 20
CE 37 CMP [HL], [Y] 20
CE BC nn CMP B, #nn 12
CE BD nn CMP L, #nn 12
CE BE nn CMP H, #nn 12
CE BF nn CMP N, #nn 12
CF 18 CMP BA, BA 16
CF 19 CMP BA, HL 16
CF 1A CMP BA, X 16
CF 1B CMP BA, Y 16
CF 38 CMP HL, BA 16
CF 39 CMP HL, HL 16
CF 3A CMP HL, X 16
CF 3B CMP HL, Y 16
CF 5C CMP SP, BA 16
CF 5D CMP SP, HL 16

Flags Affected: All

INC = Increase Register by 1

Hex Mnemonic Cycles
80 INC A 8
81 INC B 8
82 INC L 8
83 INC H 8
84 INC N 8
85 nn INC [N+#nn] 16
86 INC [HL] 12
87 INC SP 8
90 INC BA 8
91 INC HL 8
92 INC X 8
93 INC Y 8

Flags Affected: Zero

DEC = Decrease Register by 1

Hex Mnemonic Cycles
88 DEC A 8
89 DEC B 8
8A DEC L 8
8B DEC H 8
8C DEC N 8
8D nn DEC [N+#nn] 16
8E DEC [HL] 12
8F DEC SP 8
98 DEC BA 8
99 DEC HL 8
9A DEC X 8
9B DEC Y 8

Flags Affected: Zero

NEG = Negate

Hex Mnemonic Cycles
CE A4 NEG A 12
CE A5 NEG B 12
CE A6 nn NEG [N+#nn] 20
CE A7 NEG [HL] 16

Flags Affected: All

MUL = Multiply

Hex Mnemonic Cycles
CE D8 MUL L, A 48

Flags Affected: All

DIV = Divide

Hex Mnemonic Cycles
CE D9 DIV HL, A 52

Flags Affected: All

Note: Can throw Division by Zero

Logic

TST = Test Bits

Hex Mnemonic Cycles
94 TST A, B 8
95 nn TST [HL], #nn 12
96 nn TST A, #nn 8
97 nn TST B, #nn 8
DC nn nn TST [N+#nn], #nn 16

Flags Affected: Zero, Sign

AND = Logical AND

Hex Mnemonic Cycles
20 AND A, A 8
21 AND A, B 8
22 nn AND A, #nn 8
23 AND A, [HL] 8
24 nn AND A, [N+#nn] 12
25 nn nn AND A, [#nnnn] 16
26 AND A, [X] 8
27 AND A, [Y] 8
9C nn AND F, #nn 12
CE B0 nn AND B, #nn 12
CE B1 nn AND L, #nn 12
CE B2 nn AND H, #nn 12
D8 nn nn AND [N+#nn], #nn 20
CE 20 ss AND A, [X+#ss] 16
CE 21 ss AND A, [Y+#ss] 16
CE 22 AND A, [X+L] 16
CE 23 AND A, [Y+L] 16
CE 24 AND [HL], A 16
CE 25 nn AND [HL], #nn 20
CE 26 AND [HL], [X] 20
CE 27 AND [HL], [Y] 20

Flags Affected: Zero, Sign

OR = Logical Inclusive-OR

Hex Mnemonic Cycles
28 OR A, A 8
29 OR A, B 8
2A nn OR A, #nn 8
2B OR A, [HL] 8
2C nn OR A, [N+#nn] 12
2D nn nn OR A, [#nnnn] 16
2E OR A, [X] 8
2F OR A, [Y] 8
9D nn OR F, #nn 12
CE B4 nn OR B, #nn 12
CE B5 nn OR L, #nn 12
CE B6 nn OR H, #nn 12
D9 nn nn OR [N+#nn], #nn 20
CE 28 ss OR A, [X+#ss] 16
CE 29 ss OR A, [Y+#ss] 16
CE 2A OR A, [X+L] 16
CE 2B OR A, [Y+L] 16
CE 2C OR [HL], A 16
CE 2D nn OR [HL], #nn 20
CE 2E OR [HL], [X] 20
CE 2F OR [HL], [Y] 20

Flags Affected: Zero, Sign

XOR = Logical Exclusive-OR

Hex Mnemonic Cycles
38 XOR A, A 8
39 XOR A, B 8
3A nn XOR A, #nn 8
3B XOR A, [HL] 8
3C nn XOR A, [N+#nn] 12
3D nn nn XOR A, [#nnnn] 16
3E XOR A, [X] 8
3F XOR A, [Y] 8
9E nn XOR F, #nn 12
CE B8 nn XOR B, #nn 12
CE B9 nn XOR L, #nn 12
CE BA nn XOR H, #nn 12
DA nn nn XOR [N+#nn], #nn 20
CE 38 ss XOR A, [X+#ss] 16
CE 39 ss XOR A, [Y+#ss] 16
CE 3A XOR A, [X+L] 16
CE 3B XOR A, [Y+L] 16
CE 3C XOR [HL], A 16
CE 3D nn XOR [HL], #nn 20
CE 3E XOR [HL], [X] 20
CE 3F XOR [HL], [Y] 20

Flags Affected: Zero, Sign

NOT = Logical NOT

Hex Mnemonic Cycles
CE A0 NOT A 12
CE A1 NOT B 12
CE A2 nn NOT [N+#nn] 20
CE A3 NOT [HL] 16

Flags Affected: Zero, Sign

Shift & Rotate

SHL = Shift Left

Hex Mnemonic Cycles
CE 84 SHL A 12
CE 85 SHL B 12
CE 86 nn SHL [N+#nn] 20
CE 87 SHL [HL] 16

Flags Affected: Zero, Carry, Sign

SAL = Shift Arithmetic Left

Hex Mnemonic Cycles
CE 80 SAL A 12
CE 81 SAL B 12
CE 82 nn SAL [N+#nn] 20
CE 83 SAL [HL] 16

Flags Affected: All

SHR = Shift Right

Hex Mnemonic Cycles
CE 8C SHR A 12
CE 8D SHR B 12
CE 8E nn SHR [N+#nn] 20
CE 8F SHR [HL] 16

Flags Affected: Zero, Carry, Sign

SAR = Shift Arithmetic Right

Hex Mnemonic Cycles
CE 88 SAR A 12
CE 89 SAR B 12
CE 8A nn SAR [N+#nn] 20
CE 8B SAR [HL] 16

Flags Affected: All

ROL = Rotate Left

Hex Mnemonic Cycles
CE 94 ROL A 12
CE 95 ROL B 12
CE 96 nn ROL [N+#nn] 20
CE 97 ROL [HL] 16

Flags Affected: Zero, Carry, Sign

ROLC = Rotate Left through Carry

Hex Mnemonic Cycles
CE 90 ROLC A 12
CE 91 ROLC B 12
CE 92 nn ROLC [N+#nn] 20
CE 93 ROLC [HL] 16

Flags Affected: Zero, Carry, Sign

ROR = Rotate Right

Hex Mnemonic Cycles
CE 9C ROR A 12
CE 9D ROR B 12
CE 9E nn ROR [N+#nn] 20
CE 9F ROR [HL] 16

Flags Affected: Zero, Carry, Sign

RORC = Rotate Right through Carry

Hex Mnemonic Cycles
CE 98 RORC A 12
CE 99 RORC B 12
CE 9A nn RORC [N+#nn] 20
CE 9B RORC [HL] 16

Flags Affected: Zero, Carry, Sign

Swap & Expand

XCHG = Exchange Registers

Hex Mnemonic Cycles
C8 XCHG BA, HL 12
C9 XCHG BA, X 12
CA XCHG BA, Y 12
CB XCHG BA, SP 12
CC XCHG A, B 8
CD XCHG A, [HL] 12

Flags Affected: None

PACK / UNPACK = Pack and Unpack Nibbles

Hex Mnemonic Cycles
DE PACK 8
DF UNPACK 8

Flags Affected: None

SWAP = Swap Low and High Nibbles

Hex Mnemonic Cycles
F6 SWAP A 8
F7 SWAP [HL] 12

Flags Affected: None

EX = Expand Register

Hex Mnemonic Cycles
CE A8 EX BA, A 12

Flags Affected: None

Stack

PUSH = Push Register into Stack

Hex Mnemonic Cycles Regs stacked from top to bottom
A0 PUSH BA 16 B, A
A1 PUSH HL 16 H, L
A2 PUSH X 16 X(Hi), X(Lo)
A3 PUSH Y 16 Y(Hi), Y(Lo)
A4 PUSH N 12 N
A5 PUSH I 12 I
A6 PUSHX 16 XI, YI
A7 PUSH F 12 F
CF B0 PUSH A 12 A
CF B1 PUSH B 12 B
CF B2 PUSH L 12 L
CF B3 PUSH H 12 H
CF B8 PUSHA 48 B, A, H, L, X(Hi:Lo), Y(Hi:Lo), N
CF B9 PUSHAX 60 B, A, H, L, X(Hi:Lo), Y(Hi:Lo), N, I, XI, YI

Flags Affected: None

POP = Pop Register from Stack

Hex Mnemonic Cycles Regs stacked from top to bottom
A8 POP BA 12 B, A
A9 POP HL 12 H, L
AA POP X 12 X(Hi), X(Lo)
AB POP Y 12 Y(Hi), Y(Lo)
AC POP N 8 N
AD POP I 8 I
AE POPX 12 XI, YI
AF POP F 8 F
CF B4 POP A 12 A
CF B5 POP B 12 B
CF B6 POP L 12 L
CF B7 POP H 12 H
CF BC POPA 32 B, A, H, L, X(Hi:Lo), Y(Hi:Lo), N
CF BD POPAX 40 B, A, H, L, X(Hi:Lo), Y(Hi:Lo), N, I, XI, YI

Flags Affected: None

Branch

CALL = Call routine

Hex Mnemonic Cycles,True or False Condition
E0 ss CALLCB #ss*1 20 8 Carry=1
E1 ss CALLNCB #ss*1 20 8 Carry=0
E2 ss CALLZB #ss*1 20 8 Zero=1
E3 ss CALLNZB #ss*1 20 8 Zero=0
E8 ss ss CALLCW #ssss*1 24 12 Carry=1
E9 ss ss CALLNCW #ssss*1 24 12 Carry=0
EA ss ss CALLZW #ssss*1 24 12 Zero=1
EB ss ss CALLNZW #ssss*1 24 12 Zero=0
F0 ss CALLB #ss*1 20 None None
F2 ss ss CALLW #ssss*1 24 None None
FB nn nn CALL [#nnnn] 20 None None
FC ss CINT #nn 20 None None
CE F0 ss CALLL #ss 24 12 Overflow != Sign
CE F1 ss CALLLE #ss 24 12 (Overflow != Sign) OR (Zero=1)
CE F2 ss CALLG #ss 24 12 (Overflow == Sign) OR (Zero=0)
CE F3 ss CALLGE #ss 24 12 Overflow == Sign
CE F4 ss CALLO #ss 24 12 Overflow=1
CE F5 ss CALLNO #ss 24 12 Overflow=0
CE F6 ss CALLNS #ss 24 12 Sign=0
CE F7 ss CALLS #ss 24 12 Sign=1
CE F8 ss CALLNX0 #ss 24 12 ??
CE F9 ss CALLNX1 #ss 24 12 ??
CE FA ss CALLNX2 #ss 24 12 ??
CE FB ss CALLNX3 #ss 24 12 ??
CE FC ss CALLX0 #ss 24 12 ??
CE FD ss CALLX1 #ss 24 12 ??
CE FE ss CALLX2 #ss 24 12 ??
CE FF ss CALLX3 #ss 24 12 ??

*1: CALL, CALLC, CALLNC, CALLZ and CALLNZ can be used in the assembler to auto-detect the appropriate range.

Flags Affected: None

JMP = Jump to routine

Hex Mnemonic Cycles Condition
E4 ss JCB #ss*1 8 Carry=1
E5 ss JNCB #ss*1 8 Carry=0
E6 ss JZB #ss*1 8 Zero=1
E7 ss JNZB #ss*1 8 Zero=0
EC ss ss JCW #ssss*1 12 Carry=1
ED ss ss JNCW #ssss*1 12 Carry=0
EE ss ss JZW #ssss*1 12 Zero=1
EF ss ss JNZW #ssss*1 12 Zero=0
F1 ss JMPB #ss*1 8 None
F3 ss ss JMPW #ssss*1 12 None
F4 JMP HL 8 None
F5 ss JDBNZ #ss 16 B <> 0x00, decrement B before check
FD nn JINT #nn 8 None
CE E0 ss JL #ss 12 Overflow != Sign
CE E1 ss JLE #ss 12 (Overflow != Sign) OR (Zero=1)
CE E2 ss JG #ss 12 (Overflow == Sign) OR (Zero=0)
CE E3 ss JGE #ss 12 Overflow == Sign
CE E4 ss JO #ss 12 Overflow=1
CE E5 ss JNO #ss 12 Overflow=0
CE E6 ss JNS #ss 12 Sign=0
CE E7 ss JS #ss 12 Sign=1
CE E8 ss JNX0 #ss 12 ??
CE E9 ss JNX1 #ss 12 ??
CE EA ss JNX2 #ss 12 ??
CE EB ss JNX3 #ss 12 ??
CE EC ss JX0 #ss 12 ??
CE ED ss JX1 #ss 12 ??
CE EE ss JX2 #ss 12 ??
CE EF ss JX3 #ss 12 ??

*1: JMP, JC, JNC, JZ and JNZ can be used in the assembler to auto-detect the appropriate range.

Flags Affected (0xF5 – JDBNZ #ss): Zero

Flags Affected (Others): None

RET = Return from routine

Hex Mnemonic Cycles
F8 RET 8
F9 RETI 8
FA RETSKIP 8

Flags Affected: None

System

HALT = Halt CPU

Hex Mnemonic Cycles
CE AE HALT 8

Flags Affected: None

STOP = Stop CPU

Hex Mnemonic Cycles
CE AF STOP 8

Flags Affected: None

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