Function:

Obsolete instruction which was introduced on the A step of the 386 and
removed on the B1 step of the 386. The opcode a7 is used by the A step 486
to function as part of the CMPXCHG instruction. Because of software
conflicts (some compilers generated code for IBTS and its counterpart XBTS)
Intel decided to change the opcode for CMPXCHG on the B step of the 486.
Do NOT use IBTS in general purpose 386 or 486 applications.




IMUL  Integer, signed, Multiply
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