|0F 00 /1||STR r/m16||Stores segment selector from TR in r/m16|
Stores the segment selector from the task register (TR) in the destination operand. The destination operand can be a general-purpose register or a memory location. The segment selector stored with this instruction points to the task state segment (TSS) for the currently running task.
When the destination operand is a 32-bit register, the 16-bit segment selector is copied into the lower 16 bits of the register and the upper 16 bits of the register are cleared to 0s. When the destination operand is a memory location, the segment selector is written to memory as a 16-bit quantity, regardless of operand size.
The STR instruction is useful only in operating-system software. It can only be executed in protected mode.
|mem16||3 + d(0 - 2)||2||NP|