Wednesday, March 4, 2009

Related Interview Questions of part --6 of ---2

What is the use of ‘W’ bit in opcode ?.
Posted in Microprocessors Interview Questions
W bit in op-code : If an instruction in 8086 can operate on either a byte or a word , the op-code includes a W-bit which indicates whether a byte ( W =0 ) or a word (W =1) is being accessed.
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Define XLAT instruction used in 8086.
What is DAS instruction ?


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