| Opcode | Instruction | Op/En | 64-Bit Mode | Compat/Leg Mode | Description | | ------ | ----------- | ----- | ----------- | --------------- | ------------------------------------------ | | 61 | POPA | ZO | Invalid | Valid | Pop DI, SI, BP, BX, DX, CX, and AX. | | 61 | POPAD | ZO | Invalid | Valid | Pop EDI, ESI, EBP, EBX, EDX, ECX, and EAX. |