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section 7 - Index of

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DECDecrement by OneDECOperation:0-1 -+ 0Assembler Syntax:DEC 0Description: Decrement by one the specified operand and store the result in the destinationaccumulator. One is subtracted from the LSB <strong>of</strong> D.Example:DEC A ;Decrement the content <strong>of</strong> A accumulator by oneExplanation <strong>of</strong> Example: One is subtracted from the content <strong>of</strong> the A accumulator.Condition Codes:115 14 13 12 11 10 9 8 7 6 5 4 3 2LF I DM I T 1** 1 S1 1 so 1 11 I 10 1 s 1 L E I u N I z... MR ~ ... CCR0v I :1-L - Set if overflow has occurred in result. Not affected otherwiseE - Set if the signed integer portion <strong>of</strong> result is in useU- Set if result is unnormalizedN - Set if bit 55 <strong>of</strong> result is setZ - Set if result equals zeroV - Set if overflow has occurred in result-C - Set if a borrow occurs from bit 55 <strong>of</strong> result

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