07:52 <aaaa> anyone familiar with the

07:52 <aaaa> xc2064 project?

07:52 <aaaa> I'm looking into various retro chips and wondering if the xc2064 is documented enough that it would be possible to replicate / simulate it?

08:15 <aaaa> specifically - i'm wondering if there's enough tooling / documentation that i could trivially build a simulator and have some way to place simple designs (even hand-routed is fine) onto it

08:18 <mangelis> out of curiosity: what computers/consoles/etc use xc2064 ? so far i only found some cd-rom drive for amiga

08:24 <aaaa> afaik an early apple machine used it for FPU?

08:25 <aaaa> i'm mostly interested in messing around with the 2064 for the sake of itself, but it would be nice to have some baseline to go off of

14:14 <_whitenotifier-f> [yosys-symbiflow-plugins] tmichalak opened issue #33: Add missing SDC commands used in Litex generated XDC - https://git.io/JUZol

20:55 <mithro> aaaa: We have always planned to bring up the xc2064 project as a simple "my first FPGA" demo but haven't ever quite had the time to do so

21:33 <aaaa> ah

21:33 <aaaa> so for now, the bitstream stuff + reverse-engineering stuff + datasheets is all there is?

21:39 <mithro> The bitstream documentation still needs some work around the IO tiles IIRC

21:39 <mithro> The cells and routing is all there

21:39 <mithro> aaaa: There was some recent discussion around this on twitter

21:40 <mithro> aaaa: https://twitter.com/kenshirriff/status/1302486045846462465

21:40 <mithro> https://github.com/shirriff/xc2064/blob/master/reverse.py

21:40 <tpb> Title: xc2064/reverse.py at master · shirriff/xc2064 · GitHub (at github.com)

22:02 <aaaa> hmm okay

22:02 <aaaa> but there's no actual model/emulator of the whole chip available?