Downunderflow 2026 schedule update rego closed (#281)

* Add cocotb talk, hooray

* Close registration

Author: juliusbaxter

content/downunderflow/2026/0.index.md

@@ -44,19 +44,27 @@ Questions? Ping the organizers via email at [downunderflow@fossi-foundation.org]
 
   ## Register
 
-  Down Underflow is free to attend.
+  Registration for Down Underflow 2026 has been closed as we are at capacity.
+
+  Please [get in touch via email](mailto:downunderflow@fossi-foundation.org?subject=Registration) if you would like to join and we can see if space has opened up.
+
+  <!-- Down Underflow is free to attend. -->
 
-  If you are able to, please considering assisting with the costs of the event via a "Pay what you want" ticket with an donation.
-  If you are attending Down Underflow on behalf of your company, you are encouraged to donate with a professional ticket.
-  Please choose *one* option in the checkout process -- you do *not* need a "Free" ticket in addition to a "Pay what you want" ticket.
+  <!-- If you are able to, please considering assisting with the costs of the event via a "Pay what you want" ticket with an donation. -->
+  <!-- If you are attending Down Underflow on behalf of your company, you are encouraged to donate with a professional ticket. -->
+  <!-- Please choose *one* option in the checkout process -- you do *not* need a "Free" ticket in addition to a "Pay what you want" ticket. -->
 
-  :ff-eventbrite-embedded-checkout{:eventId=eventbriteEventId type="modal" buttonText="Register for Down Underflow 2026"}
+  <!-- :ff-eventbrite-embedded-checkout{:eventId=eventbriteEventId type="modal" buttonText="Register for Down Underflow 2026"} -->
 
   ## Submit a talk
 
-  Presentations are submitted through :FfEventbriteLink{:eventId=eventbriteEventId text="the Eventbrite registration interface"}.
+  We can probably still fit in a talk or two if you have something you'd like to present.
+
+  Please [get in touch via email](mailto:downunderflow@fossi-foundation.org?subject=Presentation) if you would like to submit a presentation proposal.
+
+  <!-- Presentations are submitted through :FfEventbriteLink{:eventId=eventbriteEventId text="the Eventbrite registration interface"}. -->
 
-  There are still slots available for regular and lightning talks. Please do err on the side of presenting if you're unsure!
+  <!-- There are still slots available for regular and lightning talks. Please do err on the side of presenting if you're unsure! -->
 
   Suitable topics are your work on, with or around open source semiconductor IP, tooling, flows. Even if "all" you've done is successfully (or not!) implement an open source IP or tool, come and share, we'd love to hear your story!
 

content/downunderflow/2026/talks.csv

@@ -19,6 +19,7 @@ Sat,14:55,Normal,A Language Abstraction for Custom CMOS Circuit Optimization,Zac
 Sat,15:20,Break,"Coffee break",,,,
 Sat,15:50,Normal,hdlworkflow: Seamless FPGA workflows,Scott Huynh,"All HDL simulators follow the same process (analyse, elaborate and simulate) though each uses its own variation of these commands. Similarly, all HDL synthesis tools follow the same flow (synthesise, place and route, and generate bitstream). [hdlworkflow](https://github.com/scottshuynh/hdlworkflow) abstracts away these tool-specific commands, making project setup and usage fast and effortless.",,
 Sat,16:15,Normal,MockingBoard: A Remote ASIC Prototyping Farm,Daniel Ruelas-Petrisko,"ASIC prototyping flows struggle with complicated toolchain management, ad-hoc debug infrastructure and tight coupling to vendor IP. This talk will describe a flexible approach to engineering emulation clusters, scaling from budget FPGAs to large emulation platforms.",,
+Sat,16:40,Normal,Cocotb Update,Iain Waugh,"This talk will introduce Cocotb, discuss some recent API changes across versions and migration tips, and discuss some extensions and Cocotb-adjacent tooling.",,
 Sat,17:00,Normal,Closing,FOSSi Foundation team,,,
 Sat,17:15,Break,"Rooftop drinks",,,,
 Sat,18:30,Break,"Social event",,,,