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| jevinskie[m] | Ah here it is, DLL-off-mode, might not turn it into SDR but now I know what to Google :) https://github.com/ultraembedded/core_ddr3_controller | 00:12 |
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| geertu | Melkhior: Nice! | 12:31 |
| geertu | Where are the days I would loved to have an SS20... | 12:31 |
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| keesj | lo | 13:01 |
| Melkhior | geertu: yeah wanted one back in the day, learned Unix on a SS1+ running SunOS 4 | 13:34 |
| Melkhior | Got myself a Ultra 1 Creator in the late 90s, it was nice - still have it, though with a LCD as the CRT power supply died a long time ago | 13:34 |
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| Melkhior | Only got SS20s about 6 years ago I think ; recovered then from a DEC maintenance shop that didn't know what to do with them... | 13:35 |
| Melkhior | they're in a bad shape (except the one given to me by my current CEO, he had kept it in great shape!) but still, they are SS20s :-) | 13:36 |
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| alainlou | what's the best way to debug if it seems whenever a subroutine is called (__udivsi3) it causes the system to halt? running with `--cpu-type=vexriscv --cpu-variant=minimal` | 15:09 |
| leons | Hm, can you reproduce it in litex_sim? I wanted to upstream my RVFI tracer implementation for too long now… | 15:20 |
| alainlou | leons I'll give that a shot! | 15:21 |
| leons | Other than that, it does seem like maybe your mul/div intrinsics generate proper multiplication or division instructions, which won’t work without HW multiplication support. Maybe you’re linking to a library which wasn’t compiled for the `rv32i` architecture (i.e. without extensions)? | 15:22 |
| leons | Be aware IIRC minimal really supports only `rv32i`… | 15:22 |
| alainlou | lol this is when printf'ing the CRC hash of the BIOS on bootup in what I think is a totally vanilla setup (just tried to follow installation instructions with the sifive gcc and what not) - maybe I should look at the assembly for `__udivsi3` :D | 15:31 |
| gatecat | you should also try cleaning out the build directory | 15:32 |
| gatecat | I've seen problems where a library build from a different CPU variant breaks the current build | 15:32 |
| leons | gatecat: absolutely. The incremental builds have occasionally cost me a lot of headaches. :) | 15:36 |
| alainlou | OMG | 15:41 |
| alainlou | that was it | 15:41 |
| alainlou | <3<3<3 | 15:41 |
| alainlou | <3 | 15:41 |
| alainlou | gatecat leons thanks so much! | 15:41 |
| leons | Ha, glad it works :) | 15:42 |
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