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Research-Stack/6-Documentation/docs/tang9k_uart_transport_routes_2026-05-09.md
Brandon Schneider 29f9b78b6d Stage stack solidification source slice
2026-05-11 22:08:10 -05:00

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Tang Nano 9K UART Transport Routes

Date: 2026-05-09

Transport route table only. The active virtual route validates host Q16 serial framing and parser behavior. It does not validate live FPGA fabric or the Tang Nano onboard UART bridge.

Active Route

  • Active route: virtual://q16-pty
  • Status: PASS_ACTIVE_VIRTUAL_ROUTE

Route Table

Route Device Kind Status
onboard-ftdi-a /dev/ttyUSB0 physical_ftdi_mpsse_or_bridge BLOCKED_FOR_FABRIC_UART
onboard-ftdi-b /dev/ttyUSB1 physical_ftdi_secondary_endpoint BLOCKED_FOR_FABRIC_UART
external-usb-uart /dev/ttyUSB2_or_/dev/ttyACM0 physical_external_adapter PENDING_HARDWARE
virtual-q16-pty virtual://q16-pty pty_backed_virtual_serial PASS_VIRTUAL_SERIAL

Routing Policy

  • Default non-hardware route: virtual://q16-pty
  • Live hardware promotion requires:
    • external or verified onboard route captures beacon payload a6425131360a
    • Q16 shift, weighted, and monotone hardware receipts match software expectations
    • stack audit reports FPGA hardware witness PASS

Machine Receipt

  • shared-data/data/stack_solidification/tang9k_uart_transport_routes.json