oldcomputernerd.com/md/Atari/entries/two-plus-two.md

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## Two-Plus-Two
<pre class="atari">
10 ;
20 ;ADDNRS.SRC
30 ;
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40 *=$0600 ; Begin program at 1536 decimal.
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50 ;
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52 ; See notes below this snippet for details
54 ;
60 CLD ; Clear Decimal Mode
70 ADDNRS CLC ; Clear Carry
80 LDA #2 ; Load Accumulator From Immediate 2
90 ADC #2 ; Add Immediate 2 To Accumulator With Carry
100 STA $CB ; Store Accumulator To Location 203
110 RTS ; Return To Stack
120 .END ; Program End Macro
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</pre>