---
title: asyncWrite
framework: kernel
role: symbol
role_heading: Instance Method
path: kernel/iofirewirecontroller/1457091-asyncwrite
---

# asyncWrite

## Declaration

```occ
virtual IOReturn asyncWrite(UInt32 generation, UInt16 nodeID, UInt16 addrHi, UInt32 addrLo, int speed, int label, IOMemoryDescriptor *buf, IOByteCount offset, int size, IOFWAsyncCommand *cmd);
```