title: LoadI command is not recognized in MARIE simulator
body: <p>I downloaded the MARIE simulator from a site that is no longer available and wrote a small program which just declares an array of hexadecimal numbers and then attempts to retrieve one of those numbers using the address.</p>
  <p>The problem is that the assembler complains that <code>loadi</code> is not a recognized instruction. If I use <code>load</code> rather than <code>loadi</code>, it will assemble and run and print the expected output (the address of the value I want).</p>
  <p>I believe <code>loadi</code> should work and is the instruction I need because of my previous understanding of it which is that it will load the value found at the address given by the operand, as well as some documentation I found on sites like <a href="https://github.com/MARIE-js/MARIE.js/wiki/MARIE-Instruction-Set-(with-Opcodes)" rel="nofollow noreferrer">this one</a> and <a href="http://hwmath.com/dev/MarieSim/Marie-Instruction-Set-Cheat-Sheet.pdf" rel="nofollow noreferrer">this one</a>.</p>
  <p>Why is <code>loadi</code> not recognized? Am I doing something wrong? Maybe there are different versions of MARIE with varying support for some of the instructions?</p>
  <p>My MARIE code:</p>
  <pre><code>ORG 0
  
      JUMP    start
  BADDR,  hex 0003    / Date_B = 0003
  EADDR,  hex 001A    / Date_E = 001A
      / data section begins
  Data_B, hex 0102 / data begin address    3
      hex 0105 / dec 261
      hex 0106 / dec 262
      hex 0108 / dec 264
      hex 011A / dec 282
      hex 0120 / dec 288
      hex 0225 / dec 549
      hex 0230 / dec 560      10
      hex 0231 / dec 561
      hex 0238 / dec 568
      hex 0339 / dec 825
      hex 0350 / dec 848
      hex 0459 / dec 1113     000F
      hex 055F / dec 1375
      hex 066A / dec 1642
      hex 0790
      hex 08AB
      hex 09AF
      hex 0AB9
      hex 0BBD
      hex 0CC1
      hex 0DCA               
      hex 0EFE /                 0019
  Data_E, hex 0FFE / data end address 001A
  Count,  dec 24          / the number of data
  
  start,  loadi mid
          output
          halt
  
  mid,      hex   000F / starting mid point
  </code></pre>