NAME	NEGX -- Negate with extend
SYNOPSIS	NEGX <ea> Size = (Byte, Word, Long)
FUNCTION	Perform an operation similar to a NEG, with the exception that the operand and the extend bit are both subtracted from zero. The result then is being placed in the given <ea>. As with ADDX, SUBX, ABCD, SBCD, and NBCD, it can be useful to set the zero flag before performing this operation so that multi precision operations can be tested for zero.
FORMAT	15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 0 1 0 0 0 0 0 0 SIZE MODE REGISTER   <ea>
SIZE	00 -> Byte. 01 -> Word. 10 -> Long.
REGISTER	<ea> specifies destination operand, addressing modes allowed are: Addressing Mode Mode Register Dn 000 No reg. Dn An - - (An) 010 No reg. An (An)+ 011 No reg. An -(An) 100 No reg. An (d16,An) 101 No reg. An (d8,An,Xi) 110 No reg. An (bd,An,Xi) 110 No reg. An ([bd,An,Xi]od) 110 No reg. An ([bd,An],Xi,od) 110 No reg. An Addressing Mode Mode Register Abs.W 111 000 >Abs.L 111 001 (d16,PC) - - (d8,PC,Xi) - - (bd,PC,Xi) - - ([bd,PC,Xi],od) - - ([bd,PC],Xi,od) - - #data - -
RESULT	X - Set the same as the carry bit. N - Set if the result is negative, otherwise cleared. Z - Cleared if the result is non-zero, otherwise unchanged. V - Set if an overflow is generated, cleared otherwise. C - Set if a borrow is generated, otherwise cleared.

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