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Blitzer's Blog >> 71045

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Posted: 15 Jun 2026 08:42 [ permalink ]
=> [object Object]
> globalThis.USB.scanHubs()
root@hauki-x86:~/mquickjs# [ELLI-X86] globalThis.USB.scanHubs()
[ELLI-X86]
[ELLI-X86] === BARE-METAL UHCI ROOT HUB SCAN ===
[ELLI-X86] Controller 0 (Base I/O: 0x4440)
[ELLI-X86]   -> Port 1: DEVICE CONNECTED [Low-Speed (1.5 Mbps)]
[ELLI-X86]      Raw Status Reg: 0x1A5
[ELLI-X86]   -> Port 2: Empty
[ELLI-X86] Controller 1 (Base I/O: 0x4460)
[ELLI-X86]   -> Port 1: Empty
[ELLI-X86]   -> Port 2: Empty
[ELLI-X86] Controller 2 (Base I/O: 0x4480)
[ELLI-X86]   -> Port 1: Empty
[ELLI-X86]   -> Port 2: Empty
[ELLI-X86] Controller 3 (Base I/O: 0x44A0)
[ELLI-X86]   -> Port 1: Empty
[ELLI-X86]   -> Port 2: DEVICE CONNECTED [Full-Speed (12 Mbps)]
[ELLI-X86]      Raw Status Reg: 0x95
[ELLI-X86] === SCAN COMPLETE (2 devices found) ===
[ELLI-X86] => UHCI_SCAN_OK


Execute this and show me the hex! Once we isolate which controller and port
your device is sitting on, we will build the Host Controller reset sequence
and send our very first USB Setup Packet to request the Device Descriptor.