NAME	BCHG -- Bit change
SYNOPSIS	BCHG Dn,<ea> BCHG #<data>,<ea> Size = Byte, Long
FUNCTION	Tests a bit in the destination operand and sets the Z condition code appropriately, then inverts the bit in the destination. If the destination is a data register, any of the 32 bits can be specified by the modulo 32 number. When the destination is a memory location, the operation must be a byte operation, and therefore the bit number is modulo 8. In all cases, bit zero is the least significant bit. The bit number for this operation may be specified in either of two ways: Immediate -- The bit number is specified as immediate data. Register -- The specified data register contains the bit number.
FORMAT	In the case of BCHG Dn,<ea>: 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 0 0 0 0 REGISTER 1 0 1 MODE REGISTER   <ea> In the case of BCHG #<data,<ea>:   <ea> 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 0 0 0 0 1 0 0 0 0 1 MODE REGISTER 0 0 0 0 0 0 0 0 NUMBER OF THE BIT
REGISTER	<ea> is always destination, addressing modes are the following: 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 - - * Long only; for others modes: Byte only.
RESULT	X - not affected N - not affected Z - Set if the bit tested is zero. Cleared otherwise. V - not affected C - not affected

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