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Note

Most interrupt signal from the peripherals available in the Vivado IP Integrator have a different polarity with respect to the MicroBlaze raw interrupt input.

Kernel tick source

For the MicroBlaze the source of the kernel timebase can be selected among the timers available in the hardwareThe kernel timebase on a MicroBlaze system can be derived from any available AXI Timer available in the hardware. It's also possible to reduce resource usage by using a fixed interval timer, or any other periodic interrupt source. The tick source can be configured by setting the MB_KERNEL_TICK_SRC configuration in the BSP settings. When using a fixed source the attached interrupt controller should be selected and the interrupt source configured in MV_KERNEL_TICK_INT_SRC.

No kernel tick

For absolute minimum resource usage it's possible to run the kernel without a timebase. Timeouts, delays and software timers will not work in this configuration.