# Form `VX128_2` — VX128_2 — VMX128 3-operand arithmetic

## Bit Layout

| Bits | Field | Meaning |
| --- | --- | --- |
| 0–5 | `OPCD` | primary opcode (5) |
| 6–10 | `VD128l` | destination low 5 bits |
| 11–15 | `VA128l` | source A low 5 bits |
| 16–20 | `VB128l` | source B low 5 bits |
| 21 | `VA128H` | source A high bit |
| 23–25 | `VC` | source C 3-bit field |
| 26 | `VA128h` | source A middle bit |
| 28–29 | `VD128h` | destination high 2 bits |
| 30–31 | `VB128h` | source B high 2 bits |

## Instructions Using This Form

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| Mnemonic | Opcode | Group | Description |
| --- | --- | --- | --- |
| [`vperm128`](../vmx128/vperm.md) | `0x14000000` | vmx | Vector128 Permute |

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