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This report provides a technical analysis of the driver architecture for the 16C95x family of Universal Asynchronous Receiver-Transmitters (UARTs). The 16C95x series (including theOX16C954 and ST16C554/850/950 variants) represents a high-performance evolution of the industry-standard 16550A UART. While backward compatible with the 16550A, the 16C95x introduces advanced features such as 128-byte FIFOs, fractional baud rate generators, and enhanced flow control. The driver for this hardware must manage these advanced capabilities while maintaining compatibility with standard operating system serial interfaces. 16c95x serial port driver
transmitter and receiver FIFOs (First-In-First-Out), which significantly reduce CPU overhead and prevent data loss during high-speed transfers. Automated Flow Control 16C95x serial port driver — background, design, and