title: 8085 Microprocessors. Opcode needs user argument. Using GNUSim8085
body: <pre><code>LXI H  ; "Load HL with 4000H"
  MVI M  ; "Store 32H in memory location pointed by HL register pair (4000H)"
  HLT    ; "Terminate program execution"
  </code></pre>
  
  <p>Its an 8085 microprocessor code, intended to store 8 data in memory.</p>
  
  <p>However when I run the code, I come across a Error.</p>
  
  <p>Error :   line 1 : Opcode needs an User Argument. (this is the assembler message).</p>
  
  <p>Can someone show me the mistake I am making and help me through.</p>
  
  <p>I am using GNUSim8085.</p>