Thursday, 2018-03-29

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bunnie_cr1901_modern: from what i can see in the code, yes, there's an L2 cache oddly enough03:24
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cr1901_modernmithro: Is the timvideos openocd tied to any specific commit?13:34
cr1901_modernI compiled a fresh openocd for the board my opsis is attached to, and I couldn't program the opsis until I swapped out the old bitstream proxy: for the new one:
tpbTitle: HDMI2USB-mode-switch/hdmi2usb/firmware/spartan6/opsis at master · timvideos/HDMI2USB-mode-switch · GitHub (at
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mithrocr1901_modern: Interesting - do we just need to update a submodule somewhere?21:40
mithrocr1901_modern: Oh - we had a slightly custom proxy a while back on the Opsis21:41
mithrocr1901_modern: I think the change we needed might have been merged upstream now21:41
cr1901mithro: If it's a custom proxy, it's not compatible w/ how rjo updated the jtagspi backend semi-recently21:43
mithrocr1901_modern: (Basically it held unused pins in a different way - I think in high impedance...)21:43
cr1901The current proxies have pullups on the unused pins21:44
mithrocr1901: Can't remember which way they need to be...21:46
mithrocr1901: If the upstream proxies work, then it is all good I think?21:46
cr1901mithro: The upstream proxies worked for me; the proxy that's provided w/ mode switch does not. >>21:47
cr1901Which makes me think that if the mode-switch bitstream is custom it's based on rjo's old proxies:
mithrocr1901: Hrm... on windows or on any platform?21:49
tpbTitle: GitHub - jordens/bscan_spi: A JTAG-to-SPI converter for building spi-flash proxy bitstreams for FPGAs (at
mithrocr1901: They are in fact based on those21:49
cr1901mithro: I tested on a Linux SBC21:49
cr1901If you read the warning, rjo points to a new repo, with a new set of proxies. Upstream openocd is expected to use the proxies on the master branch21:50
cr1901And since I compiled a fresh openocd today (b/c "accident"), I ran into this issue w/ mode-switch where the proxy didn't work at all; the flash id returned 0x00ffffff21:51
cr1901Okay here we go: Looks like the bitstreams were all updated 6 months ago21:52
tpbTitle: GitHub - quartiq/bscan_spi_bitstreams (at
mithrocr1901: Wonder why we haven't come across this sooner...21:53
cr1901mithro: This is why I'm asking you if the conda openocd is pinned to a specific commit21:53
mithroI guess it must be?21:54
cr1901B/c it seems like I'm  the only  person w/ this issue and the only difference is that I compiled a fresh openocd (and used hdmi2usb-mode-switch outside of conda env)21:54
cr1901Naturally, not the first time I've had this issue :). That's why I knew what was wrong immediately21:55
tpbTitle: conda-hdmi2usb-packages/meta.yaml at master · timvideos/conda-hdmi2usb-packages · GitHub (at
mithrocr1901: It doesn't look to be pinned21:58
cr1901very weird...22:08
cr1901I'll have to ask rjo what changed22:10
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