Friday, 2017-12-29

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_florent_cr1901_modern, mithro: got lm32 partially working on tinyfpga, start prompting things but crash right after...12:01
tpbTitle: tinyfpga-soc/ at master · enjoy-digital/tinyfpga-soc · GitHub (at
mithro_florent_: \o/12:26
_florent_mithro: btw that's with a modified lm32 configuration i got from cr1901_modern, otherwise it was too big12:27
_florent_cr1901_modern,  mithro: issue fixed :) (it was just an incompatibility between hardware/software lm32 configuration)13:04
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cr1901_modern1_florent_: Incompatibility?17:21
_florent_cr1901_modern1: compilation flags17:22
cr1901_modern1That shouldn't be the case, I didn't disable any of the features17:22
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cr1901_modernDoes changing from pipelined shifter/mult to multicycle shifter/mult break code?17:23
cr1901_modern_florent_: ^17:29
_florent_cr1901_modern: yes it seems17:48
_florent_for now i just removed the i/d caches17:48
_florent_and it's enough to fit in the ice4017:48
cr1901_modernThat... doesn't make sense ._.18:17
cr1901_modernIn any case, icache fits fine on the ice40. You will _really_ want that, otherwise the pipeline is useless18:18
cr1901_modern_florent_: ^18:21
cr1901_modernRight now, I have icecube installed an am trying to fix the bootloader to fix the SPI flash18:21
_florent_cr1901_modern: i was just doing a test, feel free to find the best working configuration :)18:35
_florent_cr1901_modern: my only concern was to not exceed blockram usage on ice40 (with embedded rom for the lm32 code)18:36
cr1901_modern_florent_: Ahhh fair enough :D18:37
mithrocr1901_modern: You about?22:51
cr1901_modernmithro: Now is _really_ not a good time, sorry22:53
mithrocr1901_modern: Okay no worries - just want to know what the best config for lm32 for ice4022:54
cr1901_modernmithro: multicycle multiplier, multicycle shifter, disable dcache, 128 sets of icache @16 bytes per line22:56
mithrocr1901_modern: Thanks! have a good day / night / etc23:01

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