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50  
51 <h1> words/doqdo.asm </h1>
52  
53 <p>
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56 <a href="../WordList.en.html">Jump to Vocabulary</a>
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58  
59 <pre>
60 ; ( limit counter -- )
61 ; R( -- limit counter )
62 ; runtime of do
63 ;VE_DODO:
64 ; .db 4, &quot;(do)&quot;, 0
65 ; .dw VE_HEAD
66 ; .set VE_HEAD = VE_DODO
67 XT_DOQDO:
68 .dw PFA_DOQDO
69 PFA_DOQDO:
70 ; put the content of the next flash cell on return stack
71 ; it is the address of the instruction _after_ the (+)loop
72 movw zl, xl
73 lsl zl
74 rol zh
75 lpm temp0, Z+
76 lpm temp1, Z+
77 adiw xl, 1 ; adjust to NEXT+1 = jump over &lt;mark (for leave)
78  
79 ld temp2, Y+
80 ld temp3, Y+
81 ; now check for equality
82 cp tosl, temp2
83 cpc tosh, temp3
84 brne PFA_DODO1
85 ; both values are the same -&gt; skip to loop
86 movw xl, temp0
87 rjmp DO_NEXT
88 </pre>
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