---
title: createAsyncStreamCommand
framework: kernel
role: symbol
role_heading: Instance Method
path: kernel/iofirewirebus/1571461-createasyncstreamcommand
---

# createAsyncStreamCommand

## Declaration

```occ
virtual IOFWAsyncStreamCommand * createAsyncStreamCommand(UInt32 generation, UInt32 channel, UInt32 sync, UInt32 tag, IOMemoryDescriptor *hostMem, UInt32 size, int speed, FWAsyncStreamCallback completion, void *refcon);
```