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47 lines
1.0 KiB
Plaintext
47 lines
1.0 KiB
Plaintext
$title ('SUBROUTINE MODULE - PART 1')
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subr1:
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do;
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$include (:f1:macro.lit)
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/*
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modified 3/26/81 R. Silberstein
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*/
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/* compute if number is in range (-128,127) */
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/* exit 1 if in range, 2 otherwise */
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typecalc: procedure(val) byte public;
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declare val address,
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lowb byte at (.val),
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highb byte at (.val+1);
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lowb=lowb and 80h;
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if highb=0 then
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if lowb=0 then return 1;
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if highb=0ffh then
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if lowb <> 0 then return 1;
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return 2;
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end typecalc;
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/* test if number is a "word" (>255 and <-256) */
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wrdtest: procedure(n) byte public;
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declare n address;
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return ((n < 0ff00h) and (n > 0ffh));
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end wrdtest;
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copy: procedure(n,s,d) public;
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declare n byte,
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(s,d) address,
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sch based s byte,
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dch based d byte;
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DO WHILE (N := N - 1) <> 0FFH;
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DCH = SCH;
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D = D + 1;
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S = S + 1;
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END;
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end copy;
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end subr1;
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