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[/] [eco32/] [trunk/] [fp/] [implementation/] [mmix/] [halves.mms] - Rev 133
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% Example program ... 2^-n in decimal
%
LOC #2000000000000000 % Data segment
HALF BYTE '5'
LOC @+'0'-1
BYTE "0011223344" % Table of half-digits
DATA BYTE '1',0
%
GREGTOP $g250
pbase GREG DATA-1
half GREG HALF
p GREG 0
starp GREG 0
carry GREG 0
acc GREG 0
LOC #1000
Main OR p,pbase,0 % p = &DATA-1.
SETL carry,0 % carry = 0.
JMP 1F
Loop ADD acc,acc,carry % acc += carry.
ZSOD carry,starp,5 % carry = 5[*p odd].
STB acc,p,0 % *p = acc.
1H LDB starp,p,1
INCL p,1 % p++.
LDB acc,half,starp % acc = half[*p].
PBNZ starp,Loop % repeat until *p='\0'.
STB acc,p,0 % *p = '5'.
JMP Main % repeat indefinitely.
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