Bit 16 (RF Bit, Resume Flag): The RF flag is used in conjunction with the debug register breakpoints. When RF is set, it causes any debug fault to be ignored on the next instruction. RF is then automatically reset at the successful completion of every instruction Bit 15 : Reserved Bit 14 (NT Bit, Nested Task): This flag applies to Protected Mode. NT is set to indicate that the execution of this task is nested within another task. If set, it indicates that the current nested task's Task State Segment (TSS) has a valid back link to the previous task's TSS. Bit 13,12 (IOPL Bit, Input/output Privilege): maximum CPL (current privilege level) value permitted to execute I/O instructions without generating an exception 13 fault or consulting the I/O Permission Bitmap. Bit 11 (OF Bit, Overflow Flag): OF is set if the operation resulted in a signed overflow. Bit 10 (DF Bit, Direction Flag): DF defines whether ESI/EDI registers post-decrement or post-increment during the string instructions. Post-increment occurs if DF is reset. Post-decrement occurs if DF is set. Bit 9 (IF Bit, Interrupt Enable Flag): When IF =1 the processor allows recognition of external interrupts on INTR pin Bit 8 (TF Bit, Trap Enable Flag): When TF =1 the processor enables the single step mode for debugging. Bit 7 (SF Bit, Sign Flag): SF is set if the high-order bit of the result is set, it is reset otherwise. Bit 6 (ZF bit, Zero Flag): ZF is set if all bits of the result are 0. Bit 4 (AF Bit, Auxiliary Carry Flag):
Bit 16 (RF Bit, Resume Flag): The RF flag is used in conjunction with the debug register breakpoints. When RF is set, it causes any debug fault to be ignored on the next instruction. RF is then automatically reset at the successful completion of every instruction Bit 15 : Reserved Bit 14 (NT Bit, Nested Task): This flag applies to Protected Mode. NT is set to indicate that the execution of this task is nested within another task. If set, it indicates that the current nested task's Task State Segment (TSS) has a valid back link to the previous task's TSS. Bit 13,12 (IOPL Bit, Input/output Privilege): maximum CPL (current privilege level) value permitted to execute I/O instructions without generating an exception 13 fault or consulting the I/O Permission Bitmap. Bit 11 (OF Bit, Overflow Flag): OF is set if the operation resulted in a signed overflow. Bit 10 (DF Bit, Direction Flag): DF defines whether ESI/EDI registers post-decrement or post-increment during the string instructions. Post-increment occurs if DF is reset. Post-decrement occurs if DF is set. Bit 9 (IF Bit, Interrupt Enable Flag): When IF =1 the processor allows recognition of external interrupts on INTR pin Bit 8 (TF Bit, Trap Enable Flag): When TF =1 the processor enables the single step mode for debugging. Bit 7 (SF Bit, Sign Flag): SF is set if the high-order bit of the result is set, it is reset otherwise. Bit 6 (ZF bit, Zero Flag): ZF is set if all bits of the result are 0. Bit 4 (AF Bit, Auxiliary Carry Flag):