Maintained design contracts¶
These maintained contracts and active plans describe mechanisms, invariants and exit conditions. Historical documents are excluded from the current site and search.
- Current design and execution ledgers
- CPU, atomics and runtime assembly contracts
- Build system maintenance contract
- Classic CAN mechanisms and integration boundaries
- Explicit clock leases and shallow sleep
- Nexus complete documentation-system improvement checklist
- Nexus documentation content and diagram standards
- Nexus documentation-system architecture and delivery plan
- Nexus documentation page templates
- Next-generation platform engineering handbook
- Raw Ethernet MAC, MDIO and DP83848
- Fault observation and retained responsibility
- Explicit I2C bus recovery
- Integration, resource assembly and source-SDK contract
- Bounded I/O lifecycle property matrix
- I/O observations, capacity and retained recovery
- Multiple controller ownership
- Independent finite UART and SPI DMA controllers
- Nexus next-generation platform: design from first principles
- OS backend integration
- OS execution and lifecycle contract
- Selected provider assembly gate
- SoC execution budgets
- SoC refinement and physical acceptance
- Source versions, factory generations and dependency maintenance
- Stack observations and owner lifecycle endurance
- STM32G474RET6 / MB1367 initial vertical slice
- ThreadX configuration and integration
- Reviewed shallow tickless timebase
- Optional timer capture and complementary PWM
- U575 synchronous dual-world reference contract
- UART receive DMA, duplex DMA and electrical adaptation
- USB FS device packet ownership and integration boundaries
- Kernel-invoked user I/O admission