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| <div class="col-md-6 pull-left"><h1>AARCHMRS Schema <small>2.5.5</small></h1></div> |
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| <h1 id="instruction-set-architecture">Instruction Set Architecture</h1> |
| <p>This guide and its linked sub-pages introduce the AARCHMRS Instruction Set Architecture (ISA) and its data model.</p> |
| <p>An AARCHMRS ISA Instruction contains three key things:</p> |
| <ul> |
| <li><strong>InstructionSets</strong> - bit-patterns that define the encoding, opcode, and fields for each instruction.</li> |
| <li><strong>Assembly</strong> - the assembly structure for each instruction.</li> |
| <li><strong>Operations</strong> - the ASL pseudocode and descriptions for one or more instructions.</li> |
| </ul> |
| <p>AARCHMRS ISA terminology distinguishes an <strong>instruction</strong> from an <strong>operation</strong>. An <strong>instruction</strong> is a bit-pattern that can contain named fields and specified bits. An <strong>operation</strong> is the behavior performed when an instruction is executed. |
| An operation can have more than one instruction associated with it.</p> |
| <p>See the <a href="../Instruction/index.html">ISA Data Model User Guide</a> |
| for information on how the above things are represented in the data.</p> |
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