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80386 Programmer's Reference Manual -- Opcode STR |
STR -- Store Task Register
Operationr/m := task register; DescriptionThe contents of the task register are copied to the two-byte register or memory location indicated by the effective address operand.STR is used only in operating system software. It is not used in application programs. Flags AffectedNoneProtected Mode Exceptions#GP(0) if the result is in a nonwritable segment; #GP(0) for an illegal memory operand effective address in the CS, DS, ES, FS, or GS segments; #SS(0) for an illegal address in the SS segment; #PF(fault-code) for a page faultReal Address Mode ExceptionsInterrupt 6; STR is not recognized in Real Address ModeVirtual 8086 Mode ExceptionsSame exceptions as in Real Address ModeNotesThe operand-size attribute has no effect on this instruction.
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