O D I T S Z A P C OF: Overflow flag TF: Trap flag AF: Aux carry F F F F F F F F F DF: Direction flag SF: Sign flag PF: Parity flag * IF: Interrupt flag ZF: Zero flag CF: Carry flag
STC <none>
STC
STC asserts the Carry flag (CF) to a known set state (1). Use it prior to some task that needs a bit in the Carry flag. It can also be used to put CF into a known state before returning from a procedure, to indicate that the procedure had succeeded or failed, as desired.
r8 = AL AH BL BH CL CH DL DH r16 = AX BX CX DX BP SP SI DI sr = CS DS SS ES FS GS r32 = EAX EBX ECX EDX EBP ESP ESI EDI m8 = 8-bit memory data m16 = 16-bit memory data m32 = 32-bit memory data i8 = 8-bit immediate data i16 = 16-bit immediate data i32 = 32-bit immediate data d8 = 8-bit signed displacement d16 = 16-bit signed displacement d32 = 32-bit unsigned displacement