There are several types of instructions on the 360, 370 and z/System type mainframes. Instructions in the Available column which are marked **All** are available on all models. Otherwise the instruction is only available on the System/370 and z/System machines. Where "base-displacement" address is used, it means either an indexed base-displacement address, which consists of the value of a base register, an index register, and an unsigned 12-bit displacement address, or an unindexed base-displacement where only the base register and the 12-bit displacement address are used. A base-displacement address is presumed to be indexed unless specified as unindexed. The instruction types are:

Instruction Format | |||||||||||||

Instruction Type |
First Halfword | Second Halfword | Third Halfword | Available on Models |
Size in Bytes |
Meaning | |||||||

Bits (0-7) | (8-12) | (13-15) | (16-19) | (20-23) | (24-27) | (28-31) | (32-35) | (36-39) | (40-47) | ||||

SVC | OpCode | I | All | 2 | The SVC instruction is a special class of the RR instruction, where the low 8 bits are used as an immediate value from 0 to 255. |
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E | OpCode | S/370 | 2 | E, Modified RR instruction, op code is 16 bits and has no arguments. |
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RR | OpCode | R1 | R2 | All | 2 | RR Instructions use 2 registers for the arguments. |
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RRE | OpCode | / / / / / / / / | R1 | R2 | S/370 | 4 | RRE, consisting of 2 registers and 8 unused bits. |
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RRF | OpCode | R1 | / / / / | R3 | R2 | S/370 | 4 | RRF, consisting of 3 registers and 4 unused bits. |
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OpCode | M3 | / / / / | R1 | R2 | S/370 | 4 | RRF, consisting of 2 registers, a mask and 4 unused bits. |
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OpCode | R3 | M4 | R1 | R2 | S/370 | 4 | RRF, consisting of 3 registers and a mask. |
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RX | OpCode | R1 | X2 | B2 | D2 | All | 4 | RX Instructions use one register and an index register plus base-displacement address. |
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RXE | OpCode | R1 | X2 | B2 | D2 | / / / / / / / / | OpCd | S/370 | 6 | RXE, consisting of an expanded RX format instruction with an additional op code and 8 unused bits. |
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RXF | OpCode | R3 | X2 | B2 | D2 | R1 | / / / / | OpCd | S/370 | 6 | RXE, consisting of an expanded RX format instruction with an additional register, an additional op code and 4 unused bits. |
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RS | OpCode | R1 | R3 | B2 | D2 | All | 4 | RS, consisting of two registers and an unindexed base-displacement address to reference a single string. |
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OpCode | R1 | M3 | B2 | D2 | 4 | RS, consisting of one register, a 4-bit mask and an unindexed base-displacement address to reference a single string. |
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RSE | OpCode | R1 | R3 | B2 | D2 | / / / / / / / / | OpCd | S/370 | 6 | RSE, consisting of an expanded RS format instruction of with an additional op code and 8 unused bits, one register, and an unindexed base-displacement address to reference a single string. |
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OpCode | R1 | M3 | B2 | D2 | / / / / / / / / | OpCd | S/370 | 6 | RSE, consisting of an expanded RS format instruction of with an additional op code and 8 unused bits, a 4-bit mask, and an unindexed base-displacement address to reference a single string. |
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RSL | OpCode | L1 | / / / / | B2 | D2 | / / / / / / / / | OpCd | S/370 | 6 | RSL, consisting of an expanded RS format instruction with an additional op code and 12 unused bits. |
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RSI | OpCode | R1 | R3 | I2 | S/370 | 4 | RSI, consisting of an instruction with two registers and a 16-bit immediate value. |
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RI | OpCode | R1 | OpCd | I2 | S/370 | 4 | RI, consisting of an instruction with a register, an additional op code, and an additional 16-bit immediate value. |
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RIL | OpCode | R1 | OpCd | I2 | S/370 | 6 | RIL, consisting of an instruction with a register, an additional op code, and an additional 32-bit immediate value. |
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SI | OpCode | I2 | B1 | D1 | All | 4 | SI, consisting of an 8-bit immediate value and an unindexed base-displacement address. |
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S | OpCode | B2 | D2 | S/370 | 4 | S, containing a single unindexed base-displacement address. |
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SS | OpCode | L | B1 | D1 | B2 | D2 | All | 6 | SS, instructions which use a 1 byte length, and two unindexed base-displacement addresses to reference two strings with a length of up to 256 bytes. |
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OpCode | L1 | L2 | B1 | D1 | B2 | D2 | 6 | SS, instructions which use two unindexed base-displacement addresses to reference two strings each with their own specified length of up to 16 bytes. |
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OpCode | R1 | R3 | B1 | D1 | B2 | D2 | 6 | SS, instructions which use two registers and two unindexed base-displacement addresses to reference two strings. |
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SSE | OpCode | B1 | D1 | B2 | D2 | S/370 | 6 | SSE, containing two unindexed base-displacement addresses. |

All instructions must be aligned to an even address. Attempts to create an instruction at an odd address will be flagged as an error by the assembler; an attempt to branch to an odd address will result in a program check.

There are three classes of instructions. 360 instructions are those which were part of the original IBM 360 mainframe instruction set, they are shown on the table below in this color: [ ]. 370 instructions were added with the creation of the IBM 370, they are shown on the table below in this color: [ ] are only available on 370 and higher series machines, and will cause a program check if they are attempted to be executed on a 360. z/System instructions were created after the 370, they are shown on the table below in this color: [ ] and will not work on 360 or 370 hardware, only on z/System machines.

In general, there are seven types of instructions:

- Branch Instructions, which jump from one part of a program to another
- Data Transfer Instructions, which move data from one part of memory
- Control Flow Instructions, which make changes in the scope of execution of a program
- Arithmetic Instructions, which do computations
- Logic Instructions, which make comparisons
- Shift and Rotate Instructions, which move bits right or left,
- Privileged Instructions, used by the operating system or other programs having special permission, primarily to do input/output or to control the operations of the machine, and
- Other Instructions, instructions not otherwise classified

The table shown below can be sorted on any of its columns by clicking on the symbol at the top of that column.

Opcode (Hex) |
Mnemonic |
Description |
Type of Instruction |
Class of Instruction |
---|---|---|---|---|

0101 | PR | Program Return | E | Branch Instructions |

0102 | UPT | Update Tree | E | Data Transfer Instructions |

0107 | SCKPF | Set Clock Programmable Field | E | Other Instructions |

010B | TAM | Test Addressing Mode | E | Control Flow Instructions |

010C | SAM24 | Set Addressing Mode (to 24 bits) | E | Control Flow Instructions |

010D | SAM31 | Set Addressing Mode (to 31 bits) | E | Control Flow Instructions |

010E | SAM64 | Set Addressing Mode (to 64 bits) | E | Control Flow Instructions |

01FF | TRAP2 | Trap | E | Control Flow Instructions |

04 | SPM | Set Program Mask | RR | Other Instructions |

05 | BALR | Branch And Link Register | RR | Branch Instructions |

06 | BCTR | Branch on CounT Register | RR | Branch Instructions |

07 | BCR | Branch on Condition Register | RR | Branch Instructions |

070 | NOPR | No Operation Register | RR | Branch Instructions |

07F | BR | Branch Register (Unconditional) | RR | Branch Instructions |

08 | SSK | Set Storage Key | RR | 360 Only Privileged Instructions |

09 | ISK | Insert Storage Key | RR | 360 Only Privileged Instructions |

0A | SVC | SuperVisor Call | I | Control Flow Instructions |

0B | BSM | Branch and Set Mode | RR | Branch Instructions |

0C | BASSM | Branch and Save and Set Mode | RR | Branch Instructions |

0D | BASR | Branch And Store Register | RR | Branch Instructions |

0E | MVCL | MoVe Character Long | RR | Data Transfer Instructions |

0F | CLCL | Compare Logical Character Long | RR | Control Flow Instructions |

10 | LPR | Load Positive | RR | Data Transfer Instructions |

11 | LNR | Load Negative | RR | Data Transfer Instructions |

12 | LTR | Load and Test Register | RR | Data Transfer Instructions |

13 | LCR | Load and Compare Register | RR | Data Transfer Instructions |

14 | NR | aNd Register | RR | Data Transfer Instructions |

15 | CLR | Compare Logical Register | RR | Logic Instructions |

16 | OR | Or Register | RR | Data Transfer Instructions |

17 | XR | eXclusive-or Register | RR | Data Transfer Instructions |

18 | LR | Load Register | RR | Data Transfer Instructions |

19 | CR | Compare Register | RR | Logic Instructions |

1A | AR | Add Register | RR | Arithmetic Instructions |

1B | SR | Subtract Register | RR | Arithmetic Instructions |

1C | MR | Multiply Register | RR | Arithmetic Instructions |

1D | DR | Divide Register | RR | Arithmetic Instructions |

1E | ALR | Add Logical Register | RR | Arithmetic Instructions |

1F | SLR | Subtract Logical Register | RR | Arithmetic Instructions |

20 | LPDR | Load Positive | RR | Data Transfer Instructions |

21 | LNDR | Load Negative | RR | Data Transfer Instructions |

22 | LTDR | Load and Test | RR | Data Transfer Instructions |

23 | LCDR | Load Complement | RR | Data Transfer Instructions |

24 | HDR | Halve | RR | Arithmetic Instructions |

25 | LDXR | Load Double eXt. Rounded | RR | Arithmetic Instructions |

25 | LRDR | Load Rounded | RR | 360 Only Arithmetic Instructions |

26 | MXR | Multiply | RR | Arithmetic Instructions |

27 | MXDR | Multiply | RR | Arithmetic Instructions |

28 | LDR | Load | RR | Data Transfer Instructions |

29 | CDR | Compare Double Reg. | RR | Data Transfer Instructions |

2A | ADR | Add Double Register | RR | Arithmetic Instructions |

2B | SDR | Subtract Double Reg. | RR | Arithmetic Instructions |

2C | MDR | Multiply Double Reg. | RR | Arithmetic Instructions |

2D | DDR | Divide Double Reg. | RR | Arithmetic Instructions |

2E | AWR | Add Unnormalized | RR | Arithmetic Instructions |

2F | SWR | Subtract Unnormalized | RR | Arithmetic Instructions |

30 | LPER | Load Positive | RR | Data Transfer Instructions |

31 | LNER | Load Negative | RR | Data Transfer Instructions |

32 | LTER | Load and Test | RR | Data Transfer Instructions |

33 | LCER | Load Complement | RR | Data Transfer Instructions |

34 | HER | Halve | RR | Arithmetic Instructions |

35 | LEDR | Load Rounded | RR | Data Transfer Instructions |

35 | LRER | Load Rounded | RR | 360 Only Data Transfer Instructions |

36 | AXR | Add Normalized | RR | Arithmetic Instructions |

37 | SXR | Subtract Normalized | RR | Arithmetic Instructions |

38 | LER | Load | RR | Data Transfer Instructions |

39 | CER | Compare | RR | Logic Instructions |

3A | AER | Add Normalized | RR | Arithmetic Instructions |

3B | SER | Subtract Normalized | RR | Arithmetic Instructions |

3C | MER | Multiply Normalized | RR | Arithmetic Instructions |

3C | MDER | Multiply Dbl Ext. Reg | RR | Arithmetic Instructions |

3D | DER | Divide Normalized | RR | Arithmetic Instructions |

3E | AUR | Add Unnormalized | RR | Arithmetic Instructions |

3F | SUR | Subtract Unnormalized | RR | Arithmetic Instructions |

40 | STH | STore Halfword | RX | Data Transfer Instructions |

41 | LA | Load Address | RX | Data Transfer Instructions |

42 | STC | STore Character | RX | Data Transfer Instructions |

43 | IC | Insert Character | RX | Data Transfer Instructions |

44 | EX | EXecute | RX | Data Transfer Instructions |

45 | BAL | Branch And Link | RX | Branch Instructions |

46 | BCT | Branch on CounT | RX | Branch Instructions |

47 | BC | Branch on Condition | RX | Branch Instructions |

470 | NOP | No Operation | RX | Branch Instructions |

471 | BO | Branch on Overflow/Ones | RX | Branch Instructions |

472 | BH | Branch (a High) | RX | Branch Instructions |

472 | BP | Branch on Plus | RX | Branch Instructions |

474 | BL | Branch (a Low) | RX | Branch Instructions |

474 | BM | Branch on Minus/Mixed | RX | Branch Instructions |

477 | BNE | Branch Not Equal | RX | Branch Instructions |

477 | BNZ | Branch Not Zero | RX | Branch Instructions |

478 | BE | Branch (a Equal b) | RX | Branch Instructions |

478 | BZ | Branch on Zero | RX | Branch Instructions |

47B | BNL | Branch (a Not Low) | RX | Branch Instructions |

47B | BNM | Branch Not Minus | RX | Branch Instructions |

47D | BNH | Branch Not High | RX | Branch Instructions |

47D | BNP | Branch Not Plus | RX | Branch Instructions |

47E | BNO | Branch Not Ones | RX | Branch Instructions |

47F | B | Branch (unconditional) | RX | Branch Instructions |

48 | LH | Load Halfword | RX | Data Transfer Instructions |

49 | CH | Compare Halfword | RX | Logic Instructions |

4A | AH | Add Halfword | RX | Arithmetic Instructions |

4B | SH | Subtract Halfword | RX | Arithmetic Instructions |

4C | MH | Multiply Halfword | RX | Arithmetic Instructions |

4D | BAS | Branch And Store | RX | Branch Instructions |

4E | CVD | ConVert to Decimal | RX | Data Transfer Instructions |

4F | CVB | ConVert to Binary | RX | Data Transfer Instructions |

50 | ST | STore | RX | Data Transfer Instructions |

51 | LAE | Load Address Extended | RX | Other Instructions |

54 | N | aNd | RX | Data Transfer Instructions |

55 | CL | Compare Logical | RX | Logic Instructions |

56 | O | Or | RX | Data Transfer Instructions |

57 | X | eXclusive or | RX | Data Transfer Instructions |

58 | L | Load | RX | Data Transfer Instructions |

59 | C | Compare | RX | Logic Instructions |

5A | A | Add | RX | Arithmetic Instructions |

5B | S | Subtract | RX | Arithmetic Instructions |

5C | M | Multiply | RX | Arithmetic Instructions |

5D | D | Divide | RX | Arithmetic Instructions |

5E | AL | Add Logical | RX | Arithmetic Instructions |

5F | SL | Subtract Logical | RX | Arithmetic Instructions |

60 | STD | Store Double | RX | Data Transfer Instructions |

67 | MXD | Multiply Double | RX | Arithmetic Instructions |

68 | LD | Load Double | RX | Data Transfer Instructions |

69 | CD | Compare Double | RX | Logic Instructions |

6A | AD | Add Double | RX | Arithmetic Instructions |

6B | SD | Subtract Double | RX | Arithmetic Instructions |

6C | MD | Multiply Double | RX | Arithmetic Instructions |

6D | DD | Divide Double | RX | Arithmetic Instructions |

6E | AW | Add unnormalized (Word) | RX | Arithmetic Instructions |

6F | SW | Subtract unnormalized (Word) | RX | Arithmetic Instructions |

70 | STE | Store short | RX | Data Transfer Instructions |

71 | MS | Multiply Single | RX | Data Transfer Instructions |

78 | LE | Load short | RX | Data Transfer Instructions |

79 | CE | Compare short | RX | Logic Instructions |

7A | AE | Add normalized short | RX | Arithmetic Instructions |

7B | SE | Subtract normalized short | RX | Arithmetic Instructions |

7C | ME | Multiply short | RX | Arithmetic Instructions |

7D | DE | Divide short | RX | Arithmetic Instructions |

7E | AU | Add Unnormalized short | RX | Arithmetic Instructions |

7F | SU | Subtract Unnormalized short | RX | Arithmetic Instructions |

80 | SSM | Set System Mask | RX | Privileged Instructions |

82 | LPSW | Load Program Status Word | RX | Privileged Instructions |

83 | DIAGNOSE | Diagnose | RX | Privileged Instructions |

84 | WRD | Write Direct | RX | 360 Only Privileged Instructions |

84 | BRXH | Branch Register on indeX High | RX | Branch Instructions |

85 | RDD | Read Direct | RX | 360 Only Privileged Instructions |

85 | BRXLE | Branch Register on indeX Low or Equal | RX | Branch Instructions |

86 | BXH | Branch on indeX High | RS | Branch Instructions |

87 | BXLE | Branch on indeX Low or Equal | RS | Branch Instructions |

88 | SRL | Shift Right Logical | RX | Shift and Rotate Instructions |

89 | SLL | Shift Left Logical | RX | Shift and Rotate Instructions |

8A | SRA | Shift Right Arithmetic | RX | Shift and Rotate Instructions |

8B | SLA | Shift Left Arithmetic | RX | Shift and Rotate Instructions |

8C | SRDL | Shift Right Double Logical | RX | Arithmetic Instructions |

8D | SLDL | Shift Left Double Logical | RX | Arithmetic Instructions |

8E | SRDA | Shift Right Double Arithmetic | RX | Shift and Rotate Instructions |

8F | SLDA | Shift Left Double Arithmetic | RX | Shift and Rotate Instructions |

90 | STM | STore Multiple | RX | Data Transfer Instructions |

91 | TM | Test under Mask | RX | Logic Instructions |

92 | MVI | MoVe Immediate | RX | Data Transfer Instructions |

93 | TS | Test and Set | RX | Logic Instructions |

94 | NI | aNd Immediate | RX | Data Transfer Instructions |

95 | CLI | Compare Logical Immediate | RX | Logic Instructions |

96 | OI | Or Immediate | RX | Arithmetic Instructions |

97 | XI | eXclusive-or Immediate | RX | Data Transfer Instructions |

98 | LM | Load Multiple | RS | Data Transfer Instructions |

99 | TRACE | Trace | RS | Control Flow Instructions |

9A | LAM | Load Access Multiple | RS | Data Transfer Instructions |

9B | STAM | Store Access Multiple | RS | Data Transfer Instructions |

9C | SIO | Start I/O | SI | 360 Only Privileged Instructions |

9D | TIO | Test I/O | SI | Privileged Instructions |

9E | HIO | Halt I/O | SI | 360 Only Privileged Instructions |

9F | TCH | Test CHannel | SI | Privileged Instructions |

A50 | IIHH | Insert Immediate | RI | Other Instructions |

A51 | IIHL | Insert Immediate | RI | Other Instructions |

A52 | IILH | Insert Immediate | RI | Other Instructions |

A53 | IILL | Insert Immediate | RI | Other Instructions |

A54 | NIHH | And Immediate | RI | Other Instructions |

A55 | NIHL | And Immediate | RI | Other Instructions |

A56 | NILH | And Immediate | RI | Other Instructions |

A57 | NILL | And Immediate | RI | Other Instructions |

A58 | OIHH | Or Immediate | RI | Other Instructions |

A59 | OIHL | Or Immediate | RI | Other Instructions |

A5A | OILH | Or Immediate | RI | Other Instructions |

A5B | OILL | Or Immediate | RI | Other Instructions |

A5C | LLIHH | RI | Other Instructions | |

A5D | LLIHL | |||

A5E | LLILH | |||

A5F | LLILL | |||

A70 | TMH | Test under Mask High | RI | Control Flow Instructions |

A71 | TML | Test under Mask Low | RI | Control Flow Instructions |

A72 | TMHH | |||

A73 | TMHL | |||

A74 | BRC | Branch Relative on Condition | RI | Branch Instructions |

A75 | BRAS | Branch Relative and Save | RI | Branch Instructions |

A76 | BRCT | Branch Relative on Count | RI | Branch Instructions |

A77 | BRCTG | Branch Relative on Count | RI | Branch Instructions |

A78 | LHI | Load Halfword Immediate | RI | Data Transfer Instructions |

A79 | LGHI | |||

A7A | AHI | Add Halfword Immediate | RI | Arithmetic Instructions |

A7B | AGHI | |||

A7C | MHI | Multiply Halfword Immediate | RI | Arithmetic Instructions |

A7D | MGHI | |||

A7E | CHI | Compare Halfword Immediate | RI | Control Flow Instructions |

A7F | CGHI | |||

A8 | MVCLE | Move Long Extended | RS | Control Flow Instructions |

A9 | CLCLE | Compare Logical Long Extended | RS | Control Flow Instructions |

AC | STNSM | Store Then aNd System Mask | SI | Other Instructions |

AD | STOSM | Store Then Or System Mask | SI | Other Instructions |

AE | SIGP | Signal Processor | RS | Other Instructions |

AF | MC | Monitor Call | SI | Other Instructions |

B1 | LRA | Load Real Address | RX | Other Instructions |

B202 | STIDP | Store CPU ID | S | Other Instructions |

B204 | SCK | Set Clock | S | Other Instructions |

B205 | STCK | Store Clock | S | Other Instructions |

B206 | SCKC | Set Clock Comparator | S | Privileged Instructions |

B207 | SCK | Store Clock Comparator | S | Other Instructions |

B208 | SPT | Set CPU Timer | S | Privileged Instructions |

B209 | STPT | Store CPU Timer | S | Privileged Instructions |

B20A | SPKA | Set PSW Key From Address | S | Privileged Instructions |

B20B | IPK | Insert PSW Key | S | Privileged Instructions |

B20D | PTLB | Purge TLB | S | Privileged Instructions |

B210 | SPX | Set Prefix | S | Other Instructions |

B211 | STPX | Store Prefix | S | Other Instructions |

B212 | STAP | Store CPU Address | S | Other Instructions |

B214 | SIE | |||

B218 | PC | Program Call | S | Other Instructions |

B218 | PCF | Program Call Fast | S | Other Instructions |

B219 | SAC | Set Address Space Control | S | Other Instructions |

B21A | CFC | Compare and Form Codeword | S | Other Instructions |

B221 | IPTE | Invalidate Page Table Entry | RRE | Other Instructions |

B222 | IPM | Insert Program Mask | RRE | Other Instructions |

B223 | IVSK | Insert Virtual Storage Key | RRE | Privileged Instructions |

B224 | IAC | Insert Address Space Control | RRE | Privileged Instructions |

B225 | SSAR | Set Secondary ASN | RRE | Privileged Instructions |

B226 | EPAR | Extract Primary ASN | RRE | Privileged Instructions |

B227 | ESAR | Extract Secondary ASN | RRE | Privileged Instructions |

B228 | PT | Program Transfer | RRE | Privileged Instructions |

B229 | ISKE | Insert Storage Key Extended | RRE | Privileged Instructions |

B22A | RRBE | Reset Storage Key Extended | RRE | Privileged Instructions |

B22B | SSKE | Set Storage Key Extended | RRE | Privileged Instructions |

B22C | TB | Test Block | RRE | Privileged Instructions |

B22D | DXR | Divide | RRE | Data Transfer Instructions |

B22E | PGIN | Page In | RRE | Privileged Instructions |

B22F | PGOUT | Page Out | RRE | Privileged Instructions |

B230 | CSCH | |||

B231 | HSCH | |||

B232 | MSCH | |||

B233 | SSCH | |||

B234 | STSCH | |||

B235 | TSCH | |||

B236 | TPI | |||

B237 | SAL | |||

B238 | RSCH | |||

B239 | STCRW | |||

B23A | STCPS | |||

B23B | RCHP | |||

B23C | SCHM | |||

B240 | BAKR | Branch and Stack | RRE | Data Transfer Instructions |

B241 | CKSM | Checksum | RRE | Data Transfer Instructions |

B244 | SQDR | Square Root Long | RRE | Data Transfer Instructions |

B245 | SQER | Square Root Short | RRE | Data Transfer Instructions |

B246 | STURA | STore Using Real Address | RRE | Data Transfer Instructions |

B247 | MSTA | Modify Stacked state | RRE | Data Transfer Instructions |

B248 | PALB | Purge ALB | RRE | Data Transfer Instructions |

B249 | EREG | Extract Stacked Registers | RRE | Data Transfer Instructions |

B24A | ESTA | Extract Stacked State | RRE | Data Transfer Instructions |

B24B | LURA | Load Using Real Address | RRE | Data Transfer Instructions |

B24C | TAR | Test Access | RRE | Data Transfer Instructions |

B24D | SQDR | Square Root Long | RRE | Data Transfer Instructions |

B24E | SAR | Set Access | RRE | Data Transfer Instructions |

B24F | EAR | Extract Access | RRE | Data Transfer Instructions |

B250 | CSP | Compare and Swap and Purge | RRE | Control Flow Instructions |

B252 | MSR | Multiply Single | RRE | Data Transfer Instructions |

B254 | MVPG | Move Page | RRE | Data Transfer Instructions |

B255 | MVST | Move String | RRE | Data Transfer Instructions |

B257 | CUSE | Compare Until Substring Equal | RRE | Control Flow Instructions |

B258 | BSG | Branch in Subspace Group | RRE | Branch Instructions |

B25A | BSA | Branch and Set Authority | RRE | Branch Instructions |

B25D | CLST | Compare Logical String | RRE | Control Flow Instructions |

B25E | SRST | Search String | RRE | Control Flow Instructions |

B276 | XSCH | |||

B277 | RP | Resume Program | S | Branch Instructions |

B278 | STCKE | Store Clock Extended | S | Data Transfer Instructions |

B279 | SACF | Set Address Space Control Fast | S | Data Transfer Instructions |

B27D | STSI | Store System Information | S | Data Transfer Instructions |

B299 | SRNM | Set Rounding Mode | S | Data Transfer Instructions |

B29C | STFPC | Store FPC | S | Data Transfer Instructions |

B29D | LFPC | Load FPC | S | Data Transfer Instructions |

B2A5 | TRE | Translate Extended | RRE | Data Transfer Instructions |

B2A6 | CUUTF | Convert Unicode to UTF-8 | RRE | Data Transfer Instructions |

B2A7 | CUTFU | Convert UTF-8 to Unicode | RRE | Data Transfer Instructions |

B2B1 | STFL | Store Facility List | S | Data Transfer Instructions |

B2B2 | LPSWE | |||

B2FF | TRAP4 | Trap | S | Other Instructions |

B300 | LPEBR | Load Positive Short | RRE | Data Transfer Instructions |

B301 | LNEBR | Load Negative Short | RRE | Data Transfer Instructions |

B302 | LTEBR | Load and Test Short | RRE | Data Transfer Instructions |

B303 | LCEBR | Load Complement Short | RRE | Data Transfer Instructions |

B304 | LDEBR | Load Lengthened Short/Long | RRE | Data Transfer Instructions |

B305 | LXDBR | Load Lengthened Long/Extended | RRE | Data Transfer Instructions |

B306 | LDEBR | Load Lengthened Short/Extended | RRE | Data Transfer Instructions |

B307 | MXDBR | Multiply Long/Extended | RRE | Arithmetic Instructions |

B308 | KEBR | Compare and Signal Short | RRE | Control Flow Instructions |

B309 | CEBR | Compare Short | RRE | Control Flow Instructions |

B30A | AEBR | Add Short | RRE | Arithmetic Instructions |

B30B | SEBR | Subtract Short | RRE | Arithmetic Instructions |

B30C | MDEBR | Multiply Short/Long | RRE | Arithmetic Instructions |

B30D | DEBR | Divide Short | RRE | Arithmetic Instructions |

B30E | MAEBR | Multiply and Add Short | RRE | Arithmetic Instructions |

B30F | MSEBR | Multiply and Subtract Short | RRE | Arithmetic Instructions |

B310 | LPDBR | Load Positive Long | RRE | Data Transfer Instructions |

B311 | LNDBR | Load Negative Long | RRE | Data Transfer Instructions |

B312 | LTDBR | Load and test Long | RRE | Data Transfer Instructions |

B313 | LCDBR | Load Complement Long | RRE | Data Transfer Instructions |

B314 | SQEBR | Square Root Short | RRE | Data Transfer Instructions |

B315 | SQDBR | Square Root Long | RRE | Data Transfer Instructions |

B316 | SQXBR | Square Root Extended | RRE | Data Transfer Instructions |

B317 | MEEBR | Multiply Short | RRE | Data Transfer Instructions |

B318 | KDBR | Compare and Signal Long | RRE | Data Transfer Instructions |

B319 | CDBR | Compare Long | RRE | Data Transfer Instructions |

B31A | ADBR | Add Long | RRE | Arithmetic Instructions |

B31B | SDBR | Subtract Long | RRE | Arithmetic Instructions |

B31C | MDBR | Multiply Long | RRE | Arithmetic Instructions |

B31D | DDBR | Divide Long | RRE | Arithmetic Instructions |

B31E | MADBR | Multiply and Add Long | RRE | Arithmetic Instructions |

B31F | MSDBR | Multiply and Subtract Long | RRE | Arithmetic Instructions |

B324 | LDER | Load Lengthened Short/Long | RRE | Data Transfer Instructions |

B325 | LXDR | Load Lengthened Long/Extended | RRE | Data Transfer Instructions |

B326 | LXER | Load Lengthened Short/Extended | RRE | Data Transfer Instructions |

B32E | MAER | Multiply and Add Short | RRE | Arithmetic Instructions |

B32F | MSER | Multiply and Subtract Short | RRE | Data Transfer Instructions |

B336 | SQXR | Square Root Extended | RRE | Data Transfer Instructions |

B337 | MEER | Multiply and Subtract Short | RRE | Data Transfer Instructions |

B33E | MADR | Multiply and Add Long | RRE | Data Transfer Instructions |

B33F | MSDR | Multiply and Subtract Long | RRE | Data Transfer Instructions |

B340 | LPXBR | Load Positive Extended | RRE | Data Transfer Instructions |

B341 | LNXBR | Load Negative Extended | RRE | Data Transfer Instructions |

B342 | LTXBR | Load and Test Extended | RRE | Data Transfer Instructions |

B343 | LCXBR | Load Complement Extended | RRE | Data Transfer Instructions |

B344 | LEDBR | Load Rounded Long/Short | RRE | Data Transfer Instructions |

B345 | LDXBR | Load Rounded Extended/Long | RRE | Data Transfer Instructions |

B346 | LEXBR | Load Rounded Extended/Short | RRE | Data Transfer Instructions |

B347 | FIXBR | Load FP Integer Extended | RRE | Data Transfer Instructions |

B348 | KXBR | Compare and Signal Extended | RRE | Data Transfer Instructions |

B349 | CXBR | Compare Extended | RRE | Data Transfer Instructions |

B34A | AXBR | Add Extended | RRE | Data Transfer Instructions |

B34B | SXBR | Subtract Extended | RRE | Data Transfer Instructions |

B34C | MXBR | Multiply Extended | RRE | Data Transfer Instructions |

B34D | DXBR | Divide Extended | RRE | Data Transfer Instructions |

B350 | TBEDR | Convert Short to Long | RRF | Data Transfer Instructions |

B351 | TBDR | Convert Long | RRF | Data Transfer Instructions |

B353 | DIEBR | Divide to Integer Short | RRF | Data Transfer Instructions |

B357 | FIEBR | Load FP Integer Short | RRF | Data Transfer Instructions |

B358 | THDER | Convert Short to Long | RRE | Data Transfer Instructions |

B359 | THDR | Convert Long | RRE | Data Transfer Instructions |

B35B | DIDBR | Divide to Integer Long | RRF | Data Transfer Instructions |

B35F | FIDBR | Load FP Integer Long | RRF | Data Transfer Instructions |

B360 | LPXR | Load Positive Extended | RRE | Data Transfer Instructions |

B361 | LNXR | Load Negative Extended | RRE | Data Transfer Instructions |

B362 | LTXR | Load and Test Extended | RRE | Data Transfer Instructions |

B363 | LCXR | Load Complement Extended | RRE | Data Transfer Instructions |

B365 | LXR | Load Extended | RRE | Data Transfer Instructions |

B366 | LEXR | Load Rounded Extended/Short | RRE | Data Transfer Instructions |

B367 | FIXR | Load FP Integer Extended | RRE | Data Transfer Instructions |

B369 | CXR | |||

B374 | LZER | |||

B375 | LZDR | |||

B376 | LZXR | |||

B377 | FIER | |||

B37F | FIDR | |||

B384 | SFPC | |||

B38C | EFPC | |||

B394 | CEFBR | |||

B395 | CDFBR | |||

B396 | CXFBR | |||

B398 | CFEBR | |||

B399 | CFDBR | |||

B39A | CFXBR | |||

B3A4 | CEGBR | |||

B3A5 | CDGBR | |||

B3A6 | CXGBR | |||

B3A8 | CGEBR | |||

B3A9 | CGDBR | |||

B3AA | CGXBR | |||

B3B4 | CEFR | |||

B3B5 | CDFR | |||

B3B6 | CXFR | |||

B3B8 | CFER | |||

B3B9 | CFDR | |||

B3BA | CFXR | |||

B3C4 | CEGR | |||

B3C5 | CDGR | |||

B3C6 | CXGR | |||

B3C8 | CGER | |||

B3C9 | CGDR | |||

B3CA | CGXR | |||

B6 | STCTL | |||

B7 | LCTL | |||

B8 | LMC | Load Multiple Control | RS | Privileged Instructions |

B900 | LPGR | |||

B901 | LNGR | |||

B902 | LTGR | |||

B903 | LCGR | |||

B904 | LGR | |||

B905 | LURAG | |||

B908 | AGR | |||

B909 | SGR | |||

B90A | ALGR | |||

B90B | SLGR | |||

B90C | MSGR | |||

B90D | DSGR | |||

B90E | EREGG | |||

B90F | LRVGR | |||

B910 | LPGFR | |||

B911 | LNGFR | |||

B912 | LTGFR | |||

B913 | LCGFR | |||

B914 | LLGFR | |||

B916 | LCGR | |||

B917 | LLGTR | |||

B918 | AGFR | |||

B919 | SGFR | |||

B91A | ALGFR | |||

B91B | SLGFR | |||

B91C | MSGFR | |||

B91D | DSGFR | |||

B91F | LRVR | |||

B920 | CGR | |||

B921 | CLGR | |||

B925 | STURG | |||

B930 | CGFR | |||

B931 | CLGFR | |||

B946 | BCTGR | |||

B980 | NGR | |||

B981 | OGR | |||

B982 | XGR | |||

B986 | MLGR | |||

B987 | DLGR | |||

B988 | ALCGR | |||

B989 | SLBGR | |||

B98D | EPSW | |||

B990 | TRTT | |||

B991 | TRTO | |||

B992 | TROT | |||

B993 | TROO | |||

B996 | MLR | |||

B997 | DLR | |||

B998 | ALCR | |||

B999 | SLBR | |||

B99D | ESEA | |||

BA | CS | |||

BB | CDS | |||

BD | CLM | |||

BE | STCM | Store Characters under Mask | ||

BF | ICM | Insert Characters under Mask | ||

C00 | LARL | |||

C04 | BRCL | |||

C05 | BRASL | |||

D1 | MVN | MoVe Numeric | SS | Data Transfer Instructions |

D2 | MVC | MoVe Character | SS | Data Transfer Instructions |

D2 | MVZ | MoVe Zone | SS | Data Transfer Instructions |

D4 | NC | aNd Character | SS | Data Transfer Instructions |

D5 | CLC | Compare Logical Character | SS | Logic Instructions |

D6 | OC | Or Character | SS | Data Transfer Instructions |

D7 | XC | eXclusive-or Character | SS | Data Transfer Instructions |

D9 | MVCK | |||

DA | MVCP | |||

DB | MVCS | |||

DC | TR | TRanslate | SS | Data Transfer Instructions |

DD | TRT | TRanslate and Test | SS | Data Transfer Instructions |

DE | ED | EDit | SS | Data Transfer Instructions |

DF | EDMK | EDit and MarK | SS | Data Transfer Instructions |

E1 | PKU | |||

E2 | UNPKU | |||

E303 | LRAG | |||

E304 | LG | |||

E308 | AG | |||

E309 | SG | |||

E30A | ALG | |||

E30B | SLG | |||

E30C | MSG | |||

E30D | DSG | |||

E30E | CVBG | |||

E30F | LRVG | |||

E314 | LGF | |||

E315 | LGH | |||

E316 | LLGF | |||

E317 | LLGT | |||

E318 | AGF | |||

E319 | SGF | |||

E31A | ALGF | |||

E31B | SLGF | |||

E31C | MSGF | |||

E31D | DSGF | |||

E31E | LRV | |||

E31F | LRVH | |||

E320 | CG | |||

E321 | CLG | |||

E324 | STG | |||

E32E | CVDG | |||

E32F | STRVG | |||

E330 | CGF | |||

E331 | CLGF | |||

E33E | STRV | |||

E33F | STRVH | |||

E346 | BCTG | |||

E380 | NG | |||

E381 | OG | |||

E382 | XG | |||

E386 | MLG | |||

E387 | DLG | |||

E388 | ALCG | |||

E389 | SLBG | |||

E38E | STPQ | |||

E38F | LPQ | |||

E390 | LLGC | |||

E391 | LLGH | |||

E396 | ML | |||

E397 | DL | |||

E398 | ALC | |||

E399 | SLB | |||

E500 | LASP | |||

E501 | TPROT | |||

E502 | STRAG | |||

E50E | MVCSK | |||

E50F | MVCDK | |||

E8 | MVCIN | |||

E9 | PKA | |||

EA | UNPKA | |||

EB04 | LMG | |||

EB0A | SRAG | |||

EB0B | SLAG | |||

EB0C | SRLG | |||

EB0D | SLLG | |||

EB0F | TRACG | |||

EB1C | RLLG | |||

EB1D | RLL | |||

EB20 | CLMH | |||

EB24 | STMG | |||

EB25 | STCTG | |||

EB26 | STMH | |||

EB2C | STCMH | |||

EB2F | LCTLG | |||

EB30 | CSG | |||

EB3E | CDSG | |||

EB44 | BXHG | |||

EB45 | BXLEG | |||

EB80 | ICMH | |||

EB8E | MVCLU | |||

EB8F | CLCLU | |||

EB96 | LMH | |||

EBC0 | TP | |||

EC44 | BRXHG | |||

EC45 | BRXLG | |||

ED04 | LDEB | |||

ED05 | LXDB | |||

ED06 | LXEB | |||

ED07 | MXDB | |||

ED08 | KEB | |||

ED09 | CEB | |||

ED0A | AEB | |||

ED0B | SEB | |||

ED0C | MDEB | |||

ED0D | DEB | |||

ED0E | MAEB | |||

ED0F | MSEB | |||

ED10 | TCEB | |||

ED11 | TCDB | |||

ED12 | TCXB | |||

ED14 | SQEB | |||

ED15 | SQDB | |||

ED17 | MEEB | |||

ED18 | KDB | |||

ED19 | CDB | |||

ED1A | ADB | |||

ED1B | SDB | |||

ED1C | MDB | |||

ED1D | DDB | |||

ED1E | MADB | |||

ED1F | MSDB | |||

ED24 | LDE | |||

ED25 | LXD | |||

ED26 | LXE | |||

ED34 | SQE | |||

ED35 | SQD | |||

ED37 | MEE | |||

EE | PLO | |||

EF | LMD | |||

F0 | SRP | Shift and Round Packed | SS | Arithmetic Instructions |

F1 | MVO | Move with Offset | SS | Arithmetic Instructions |

F2 | PACK | PACK | SS | Arithmetic Instructions |

F3 | UNPK | UNPacK | SS | Arithmetic Instructions |

F8 | ZAP | Zero and Add Packed | SS | Arithmetic Instructions |

F9 | CP | Compare Packed | SS | Control Flow Instructions |

FA | AP | Add Packed | SS | Arithmetic Instructions |

FB | SP | Subtract Packed | SS | Arithmetic Instructions |

FC | MP | Multiply Packed | SS | Arithmetic Instructions |

FD | DP | Divide Packed | SS | Arithmetic Instructions |

360 Assembly Language | |

360 Family | Introduction · Basic FAQ · 360 Family · 360 Architecture · Comments |
---|---|

360 Instruction Set | 360 Instructions · Branch Instructions · Data Transfer Instructions · Control Flow Instructions · Arithmetic Instructions · Logic Instructions · Shift and Rotate Instructions · Other Instructions |

Syntaxes and Assemblers | 360 Assemblers· Pseudo Instructions |

Instruction Extensions | Floating Point · High-Level Languages |