open-source-silicon.dev

<@U0175T39732>:  Did we promise you some?

<@U016EM8L91B> There was talk about what I needed for StriVe2 in terms of a PCB, but not StriVe1

What we have is StriVe2, which has been completely unresponsive so far, and the break-out chip with just the SRAM.  We designed a board for the SRAM chip but I'm not sure if any have been ordered.

StriVe 1 has only synthesized memory on it.

<@U0175T39732>:  Although the only meaningful difference between StriVe1 and StriVe2 is the SRAM, there is nothing to indicate that the SRAM is somehow causing StriVe2 to malfunction.  It is stone dead, like it is being held in reset permanently.  It is not drawing more current than StriVe 1, so it's not a short.  Still a mystery.

Does Strive2 only have SRAM or is it a mix of sram + dff memory like on the caravel ?  I assume it'd at least have some form of bootrom ?  Or does it just start from memory mapped flash directly ?

<@U016HU5HK8V>:  None of the chips has any kind of boot ROM other than a few bytes to reset the SPI flash and start a read cycle.  Looking at the striVe2 verilog, there is only the openRAM SRAM block, no synthesized RAM other than the register bank.

Are the sources / gds/ ... for the striVe 1/2 chips somewhere available ?

Do you remember the git repo for the strive2 and strive2-openram repo? Or did my access get taken away?

`<mailto:git@gitlab.com|git@gitlab.com>:efabless/designs/striVe2.git` and `<mailto:git@gitlab.com|git@gitlab.com>:efabless/designs/openram_tc_1kb`.  Is that what you were expecting?

Okay, that's what's in my git config file, but I don't see it in gitlab, either. . .

<@U016EM8L91B> Yes, thanks. I couldn't remember the second (it was on an old machine). Hrm, it doesn't seem to have the final design though.

"develop" branch should be what you want.

<@U016EM8L91B> Any news on testing of strive / strive2 / ram ?

(or on the progress of mpw-one for that matter)

<@U016HU5HK8V>: MPW-one has been slow to go into production due to SkyWater pushing higher priority items in front of it.  I do not know how that is affecting the target date for getting the chips back.

<@U016HU5HK8V> :  As for the other chips:  The state is essentially the same;  we have functional verification of striVe and the RAM, and striVe 2 is as dead as dead can be.  We spent a lot of time trying to understand what might be wrong with striVe 2 and have come up empty-handed.  As far as we can tell, there's nothing wrong with striVe 2.