Friday, 2019-01-25

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tpbTitle: Document the bitstream for the IOBs in the Artix-7 · Issue #11 · SymbiFlow/prjxray · GitHub (at
digshadowjust updated comment I added03:19
OmniMancerIs there any guidance available for the BRAM patching tool requirements/direction?03:26
OmniMancerThis issue
tpbTitle: Create tool to patch blockram (BRAM) contents in bitstream · Issue #181 · SymbiFlow/prjxray · GitHub (at
litghostThe BRAM contents live in the BLOCK_RAM segments of the bitstream (see  So a tool could use xc7patch to replace frames in those segments with new contents, and a tool could extract that data too.03:38
litghostWith tilegrid.json and the block ram segbits ( we do have the mapping of bits in the BLOCK_RAM sections, and their relationship to the BRAM03:39
tpbTitle: prjxray-db/segbits_bram_l.block_ram.db at master · SymbiFlow/prjxray-db · GitHub (at
litghostSome work is required to handle things like parity bits if enabled, and the bits in the segbits do not match the exact bits used in the vivado techmap03:40
litghostThe vivado techmap defines 256 bit segments, where as the segbits are a flat linear array03:40
OmniMancerAh, thanks for the links, I will look at them after LCA and see what I can make of it and ask further questions if I have them03:43
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nats` <= I'll take care of that this evening, I'll store it in the run.ok (it'll be moved later when we will move fuzzer results in xml files)09:11
tpbTitle: Fuzzer storing last target · Issue #528 · SymbiFlow/prjxray · GitHub (at
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litghostnats: Maybe conside making the build directories and run.ok files suffix with .${XRAY_PART}?  Then we could build databases in the same directory structure?21:05
litghostI haven't thought about it too hard, but there is nothing preventing it, and then Make would track the dependencies correctly21:05
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