Can I use Interrupts and DMA under RTX

Owned by Michael Trensch
Last updated: 2016-07-01
1 min read

Interrupt Mode

The cifX device can be used in polling or interrupt mode.

If interrupt mode should be used, IRQ resource limitations must be considered.
As RTX® does not support sharing IRQ lines with Windows® devices, the interrupt line which
RTX® uses must be available for exclusive use.
 

Finding an exclusive IRQ often requires physically moving hardware around in the system or
disabling other Windows® devices.
 

If you have difficulty configuring your hardware for use with RTX® due to IRQ resource limitations,
please consult the following IntervalZero manual:.

  • IntervalZero Inc.: Working with Hardware Resource Limitations. Document Number: RTX-810-004.

MSI Message Based Interrupts

Hilsche CIFX PCIexpress cards are currently supporting only LEGACY interrupts.

DMA Support

DMA can be used in polling and interrupt mode.