art mancini wrote:
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HI LO
00 | 64
01 | 2C
ADD | 90 RESULT PLUS CARRY-----------> ADDC 01 RESULT-------------------------------02 | 90 ERROR RESULT SHOULD BE 190

WHERE AM I GOING WRONG

64h+2ch=90h and it does not generate carry.your carry seems to be set while entering this code.try clr c before executing
your addition.
pranav