| Op Code (Hex) | Extender | Operand 1 | Operand 2 | Operand 3 | Operand [4-5] |
|---|---|---|---|---|---|
| AND 1093 |
| Receiver | Source 1 | Source 2 |
|
|
| |||||
| ANDI 1893 | Indicator options | Receiver | Source 1 | Source 2 | Indicator targets |
|
| |||||
| ANDB 1C93 | Branch options | Receiver | Source 1 | Source 2 | Branch targets |
Operand 2: Character scalar or numeric scalar.
Operand 3: Character scalar or numeric scalar.
Operand 4-5:
| Op Code (Hex) | Extender | Operand 1 | Operand 2 | Operand [3-4] |
|---|---|---|---|---|
| ANDS 1193 |
| Receiver/Source 1 | Source 2 |
|
|
| ||||
| ANDIS 1993 | Indicator options | Receiver/Source 1 | Source 2 | Indicator targets |
|
| ||||
| ANDBS 1D93 | Branch options | Receiver/Source 1 | Source 2 | Branch targets |
Operand 2: Character scalar or numeric scalar.
Operand 3-4:
Description: The Boolean and operation is performed on the string values in the source operands. The resulting string is placed in the receiver operand. The operands may be character or numeric scalars. They are both interpreted as bit strings. Substringing is supported for both character and numeric operands.
The length of the operation is equal to the length of the longer of the two source operands. The shorter of the two operands is logically padded on the right with hex 00 values. This assigns hex 00 values to the results for those bytes that correspond to the excess bytes of the longer operand.
The bit values of the result are determined as follows:
| Source 1 Bit | Source 2 Bit | Result Bit | |
|---|---|---|---|
| 0 | 0 | 0 | |
| 0 | 1 | 0 | |
| 1 | 0 | 0 | |
| 1 | 1 | 1 |
If operands overlap but do not share all of the same bytes, results of operations performed on these operands are not predictable. If overlapped operands share all of the same bytes, the results are predictable when direct addressing is used. If indirect addressing is used (that is, based operands, parameters, strings with variable lengths, and arrays with variable subscripts), the results are not always predictable.
Substring operand references that allow for a null substring reference (a length value of zero) may be specified for operands 1, 2, and 3. The effect of specifying a null substring reference for either or both of the source operands is that the result is all zero and the instruction's resultant condition is zero. When a null substring reference is specified for the receiver, a result is not set and the instruction's resultant condition is zero regardless of the values of the source operands.
When the receiver operand is a numeric variable scalar, it is possible that the result produced will not be a valid value for the numeric type. This can occur due to padding with hex 00, due to truncation, or due to the resultant bit string produced by the instruction. The instruction completes normally and signals no exceptions for these conditions.
06 Addressing
08 Argument/Parameter
10 Damage Encountered
1C Machine-Dependent
20 Machine Support
22 Object Access
24 Pointer Specification
2C Program Execution
2E Resource Control Limit
36 Space Management
44 Protection Violation