22:41 <Wanda[cis]> should I expect the jtag-probe applet and friends to be stable at 10MHz? I'm trying to talk to an XC9500 and failing (the IR data comes in shifted by 1 bit), and I'm not sure if it's because the vendor BSDL file lies about max frequency, or if it's the applet

22:42 <whitequark[cis]> nope

22:42 <whitequark[cis]> i never got around to refactoring it so that it uses IOB registers

22:42 <whitequark[cis]> it just ... well, don't look too closely at what it does

22:43 <whitequark[cis]> this should eventually be addressed by improvements at Amaranth level, though, such as streams and new IO

22:46 <Wanda[cis]> ok, fair enough

22:48 <ali_as> I love those CPLDs, they are only in 3.3v versions now I think.

22:48 <whitequark[cis]> atf1502 still comes in 5v

22:48 <whitequark[cis]> and luckily i have reverse engineered the entire thing!

22:48 <whitequark[cis]> https://whitequark.github.io/prjbureau/

22:57 <Wanda[cis]> yeah

22:57 <Wanda[cis]> I grabbed some actual OG 5V XC9500 off ebay

22:58 <Wanda[cis]> unfortunately they seem to be out of spec, and fail to erase with a timeout

22:58 <Wanda[cis]> but do seem to erase and program successfully when I manually bump the timeout from 1.3s to 2s

22:58 <Wanda[cis]> ... I wonder what kind of violence they were subjected to before they ended up on my desk

23:05 <nanographs[m]> 👋hey everyone

23:06 <ali_as> Wow, for the price people seem to want for 9036s on ebay maybe they were recycled from a xilinx reject pile somehere.

23:06 <ali_as> 9536s even

23:11 <whitequark[cis]> hi nanographs

23:11 <nanographs[m]> Is there a meeting today?

23:12 <whitequark[cis]> nope, Attie is not doing well

23:12 <whitequark[cis]> and neither do I

23:12 <nanographs[m]> Aw very sorry to hear that

23:50 <duskwuff[m]> there's two variants of the XC9500 with different erase sequences. what IDCODE do you get from yours

23:52 <duskwuff[m]> some details at http://www.blunk-electronic.de/ise/howto_erase_XC9500.pdf

23:56 <Wanda[cis]> what the fuck.

23:56 <Wanda[cis]> but, no, I get the normal IDCODE

23:56 <Wanda[cis]> I: g.applet.interface.jtag_probe: TAP #0: IR[8] IDCODE=0x29502093