Set a user specified header for a send NuDCL
- macOS 10.3+
- Mac Catalyst 13.0+
The DCL to modify
A pointer to a two-quadlet header. See section 9.6 of the the OHCI specification.
A pointer to a two-quadlet mask. The quadlets in headerPtr are masked with 'mask' and the masked-out bits are replaced by the FireWire system software.
Returns an IOReturn error code.
Allows the client to create a custom header for a transmitted isochronous packet. The header is masked with 'mask', and the FireWire system software fills in the masked out bits.
This change will apply immediately to a non-running DCL program. An update must be run on the DCL for changes to take effect in a running program.