Monday, 2019-06-24

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sf-slack2<butta> We are currently looking into making a blackbox model for DSPs so we can get some designs through routing (but obviously not bitstream generation).  Does anyone have advice on how to do this?  We are a bit confused about whether all the .pb_type.xml are generated from a .sim.v or if some are handwritten because we can't find .sim.v for the brams.18:29
sf-slack2<kgugala> @butta only a few pb_type.xmls are generated from sim.v files18:34
sf-slack2<kgugala> v2x (the tool used for generating xmls) does not support all the features we need to fully switch to generated xmls18:35
sf-slack2<kgugala> you're right - BRAMs are written by hand18:35
sf-slack2<butta> Oh okay that's helpful18:36
sf-slack2<butta> So to get a blackbox model for DSPs do we just need to write the .model.xml and the .pb_type.xml or is there other stuff we are missing?18:37
sf-slack2<kgugala> you need to include them somwhere in the upper level xml18:37
sf-slack2<kgugala> the add_file_target CMAKE function scans for all the included xmls and adds them to a dependency list18:38
sf-slack2<kgugala> and you need to have your pb_type and model included somewhere in the arch.xml18:39
sf-slack2<kgugala> architectures are defined e.g. here
tpbTitle: symbiflow-arch-defs/CMakeLists.txt at master · SymbiFlow/symbiflow-arch-defs · GitHub (at
sf-slack2<kgugala> (similar for other supported devices)18:49
sf-slack2<kgugala> you'd need to add a tile definition and include it in the architecture definition18:50
sf-slack2<kgugala> I mean DSP tile definition18:50
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