The -waveform in SDC accepts waveforms with multiple edges within a period. In Microchip design implementation, only two waveforms are accepted.
SDC accepts defining a clock on many sources using a single command. In Microchip design implementation, only one source is accepted.
The source argument in SDC create_clock command is optional. This is in conjunction with the -name argument in SDC to support the concept of virtual clocks. In Microchip implementation, source is a mandatory argument as -name and virtual clocks concept is not supported.
The -domain argument in the SDC create_clock command is not supported.
