Added new oscillator types and improved its handling

YosysHQ / apicula

Project Apicula 🐝: bitstream documentation for Gowin FPGAs

MIT License

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Closed yrabbit closed 1 year ago

yrabbit commented 1 year ago

Revised PR, originally by uis246

Take into account the fact that some inputs and outputs are in other cells from the primitive
Clear energy conservation bits inherited from image template
Enable OSC in the GW1NZ-1 chip by setting the impirical bits.
Minor edits.

yrabbit commented 1 year ago

Works on tangnano, tangnano1k, tangnano4k and tangnano9k