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trabucayre | adjtm: for Olimex the opensource toolchain (yosys+nextpnr+prjpeppercorn) is the best choice | 07:07 |
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trabucayre | vexriscv is fine but with --cpu-variant minimal its better | 07:07 |
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adjtm | trabucayre, thanks for the advice | 10:43 |
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adjtm | trabucayre, the GateMate board is not listed here https://github.com/litex-hub/linux-on-litex-vexriscv | 14:30 |
adjtm | and it doesn't seem the be any based on Cologne's fpgas, how many lookup tables would be enough for running a vexriscv SOC? | 14:32 |
trabucayre | adjtm: It's not a limitation with the size but with the external memory | 15:53 |
adjtm | trabucayre, don't plan to use the SOC for any useful task, just for learning and experimenting with posit hardware unit | 15:54 |
adjtm | is the board's memory enough for that? | 15:54 |
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trabucayre | the HX8K has no external memory | 16:07 |
trabucayre | Linux requires > 8MB | 16:07 |
adjtm | GateMateA1 has 8MB of PSRAM if I'm not wrong | 16:47 |
trabucayre | Yes but PSRAM support is not present/added | 16:47 |
adjtm | ah, ok, understood | 16:47 |
trabucayre | 8MB is a bit small (or requires some hack) | 16:48 |
adjtm | I thought that PSRAM worked like SRAM and would be less difficult to support than DRAM | 16:48 |
adjtm | but even then I understand that it will not be trivial to support | 16:48 |
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