OCuLink Riser for the Supermicro AIOM Slot

@@ -1,3 +1,20 @@ # OCuLink Riser for the Supermicro AIOM Slot -Passive OCP NIC 3.0 SFF card that breaks a Supermicro AIOM slot's PCIe x16 out to OCuLink ports for NVMe or GPUs at Gen4, designed by AI in KiCad.+A passive card for Supermicro's AIOM slot (OCP NIC 3.0 small form factor) that breaks the PCIe x16 link out to OCuLink (SFF-8611) ports, so NVMe drives or a GPU can be cabled out at PCIe Gen4. It was built for a YouTube viewer who asked for one, by Claude in Adom Hydrogen with adom-aiflow and KiCad.++**Status: in progress.** The design is being built now; the board files, BOM and Gerbers will be published here when it passes every check.++## The design brief++- **Host side:** OCP NIC 3.0 SFF card edge (168 pins), with the card outline, keep-outs, power and the present/bifurcation pins from the OCP 3.0 spec.+- **Device side:** OCuLink receptacles carrying the x16 link, with a reference clock and PERST# for each port.+- **High-speed rules:** controlled-impedance stackup, 85 ohm differential pairs, skew-matched within each pair and across each port's lanes.++## Build clips: watch it being made++<table>+<tr>+<td width="104"><a href="clips/README.md"><img src="clips/clips-icon.png" width="112" alt="Build clips"></a><br><sub>&nbsp;&nbsp;&nbsp;&nbsp;Build&nbsp;clips&nbsp;&nbsp;&nbsp;&nbsp;</sub></td>+<td>Every part of the build, filmed off the screen and cut to 16x speed with a voice-over explaining what is happening. <strong><a href="clips/README.md">The build clips</a></strong> run from the viewer's request through the spec research, the impedance math, routing and the board in KiCad. Watch them in order to see how an AI engineers a high-speed PCB end to end.<br><br><a href="clips/README.md">Watch the clips</a></td>+</tr>+</table>

@@ -0,0 +1,19 @@+# Build clips++The whole build, filmed off the screen while Claude worked in Adom Hydrogen, cut to 16x speed with a voice-over for each part. New clips land here as the build goes on.++| Clip | Real time | What happens |+|---|---|---|+| [1. The request and the research](#1-the-request-and-the-research) | 0:00 to 0:46 | The prompt, the OCP 3.0 and OCuLink specs, the aiflow timeline, the 85 ohm field solver |++## 1. The request and the research++<video controls preload="metadata" width="1080" poster="clips/clip-01-poster.jpg" src="clips/clip-01.mp4"></video>++[Download clip 1](clips/clip-01.mp4) (2 min 53 s, 16x, narrated)++- The request is a YouTube comment: an OCuLink riser for the AIOM port on a Supermicro server.+- The AIOM slot is Supermicro's OCP NIC 3.0 small form factor slot. Claude reads the OCP 3.0 spec and the OCuLink connector standards, including the pinout tables in the PDFs.+- It finds the Amphenol OCuLink receptacle drawing and the 168-pin edge layout, including the present and bifurcation pins that tell the server how to split the x16 link.+- The adom-aiflow timeline opens: the clock starts at the prompt, and every gate from design rules to Gerbers is listed.+- It writes a small 2D field solver for 85 ohm differential pairs on a 6-layer stackup, then checks the card outline and keep-out zones against the spec drawings.

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