| Opcode Format | Mnemonic | Description |
| 11001001 | STORE_FLAGS_ON_STACK | The STORE_FLAGS_ON_STACK mnemonic is used to to save the contents of the FLAGS_OUTBUFFER Register onto the Stack. It is used during PUSHF operations (which uses internally the ALU) without changing the original content of the FLAGS Register. |
The following animation shows how the STORE_FLAGS_ON_STACK opcode is executed physically on the CPU.
