| Opcode | Instruction | Op/En | 64-Bit Mode | Compat/Leg Mode | Description | | ------ | ----------- | ----- | ----------- | --------------- | --------------------------------------------------------- | | 60 | PUSHA | ZO | Invalid | Valid | Push AX, CX, DX, BX, original SP, BP, SI, and DI. | | 60 | PUSHAD | ZO | Invalid | Valid | Push EAX, ECX, EDX, EBX, original ESP, EBP, ESI, and EDI. |