Routines 
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The address of this routine is found in the table of addresses. It is called via the calculator literal +31 by the routines at BEEP, CIRCLE, DRAW, CD_PRMS1, S_RND, e_to_fp, PRINT_FP, series, n_mod_m, int, exp, ln, get_argt, sin, tan, atn, asn, sqr and to_power.
This subroutine moves a floatingpoint number to the top of the calculator stack (3 cases) or from the top of the stack to the calculator's memory area (1 case). It is also called through the calculator when it simply duplicates the number at the top of the calculator stack, the 'last value', thereby extending the stack by five bytes.


duplicate  33C0  CALL TEST_5_SP  A test is made for room.  
33C3  LDIR  Move the five bytes involved.  
33C5  RET  Finished. 
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