Altera

The AlteraPlatform class provides a base platform to support Altera toolchains.

The Quartus and Mistral toolchains are supported.

class amaranth.vendor.AlteraPlatform(*, toolchain='Quartus')

Quartus toolchain

Required tools:

  • quartus_map

  • quartus_fit

  • quartus_asm

  • quartus_sta

The environment is populated by running the script specified in the environment variable AMARANTH_ENV_QUARTUS, if present.

Available overrides:

  • add_settings: inserts commands at the end of the QSF file.

  • add_constraints: inserts commands at the end of the SDC file.

  • nproc: sets the number of cores used by all tools.

  • quartus_map_opts: adds extra options for quartus_map.

  • quartus_fit_opts: adds extra options for quartus_fit.

  • quartus_asm_opts: adds extra options for quartus_asm.

  • quartus_sta_opts: adds extra options for quartus_sta.

Build products:

  • *.rpt: toolchain reports.

  • {{name}}.sof: bitstream as SRAM object file.

  • {{name}}.rbf: bitstream as raw binary file.

Mistral toolchain

Required tools:

  • yosys

  • nextpnr-mistral

The environment is populated by running the script specified in the environment variable AMARANTH_ENV_MISTRAL, if present.

  • verbose: enables logging of informational messages to standard error.

  • read_verilog_opts: adds options for read_verilog Yosys command.

  • synth_opts: adds options for synth_intel_alm Yosys command.

  • script_after_read: inserts commands after read_ilang in Yosys script.

  • script_after_synth: inserts commands after synth_intel_alm in Yosys script.

  • yosys_opts: adds extra options for yosys.

  • nextpnr_opts: adds extra options for nextpnr-mistral.