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| <h4 class="subsection">9.41.3 Instruction syntax</h4> |
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| <p><a name="index-instruction-syntax_002c-s390-2066"></a><a name="index-s390-instruction-syntax-2067"></a> |
| The assembler syntax closely follows the syntax outlined in |
| Enterprise Systems Architecture/390 Principles of Operation (SA22-7201) |
| and the z/Architecture Principles of Operation (SA22-7832). |
| |
| <p>Each instruction has two major parts, the instruction mnemonic |
| and the instruction operands. The instruction format varies. |
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| <ul class="menu"> |
| <li><a accesskey="1" href="s390-Register.html#s390-Register">s390 Register</a>: Register Naming |
| <li><a accesskey="2" href="s390-Mnemonics.html#s390-Mnemonics">s390 Mnemonics</a>: Instruction Mnemonics |
| <li><a accesskey="3" href="s390-Operands.html#s390-Operands">s390 Operands</a>: Instruction Operands |
| <li><a accesskey="4" href="s390-Formats.html#s390-Formats">s390 Formats</a>: Instruction Formats |
| <li><a accesskey="5" href="s390-Aliases.html#s390-Aliases">s390 Aliases</a>: Instruction Aliases |
| <li><a accesskey="6" href="s390-Operand-Modifier.html#s390-Operand-Modifier">s390 Operand Modifier</a>: Instruction Operand Modifier |
| <li><a accesskey="7" href="s390-Instruction-Marker.html#s390-Instruction-Marker">s390 Instruction Marker</a>: Instruction Marker |
| <li><a accesskey="8" href="s390-Literal-Pool-Entries.html#s390-Literal-Pool-Entries">s390 Literal Pool Entries</a>: Literal Pool Entries |
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