16c95x Serial Port Driver Jun 2026

Generating high baud rates (up to 60 Mbaud) is a complex task. Unlike the 16550's fixed division ratios, the 16C95x introduces additional registers for fine-grained control:

: The Rx FIFO may also trigger a timeout interrupt (when less than threshold bytes are pending for 4 character times). The driver must handle this by reading the remaining bytes. 16c95x serial port driver

: If the device appears as an "Unknown PCI Device," you can manually point the Windows Device Manager to the driver files or use the Add Legacy Hardware Configuration Generating high baud rates (up to 60 Mbaud)

To extract maximum reliability from a 16C95X serial port driver, standard parameters should be tuned via the OS interface: Adjusting FIFO Triggers (Windows) : If the device appears as an "Unknown

: These drivers support deep FIFO (First-In, First-Out) buffers —typically 128 or 256 bytes—which significantly reduce CPU overhead compared to standard 16550 UARTs (which have only 16-byte buffers). Common Use Cases You will typically encounter this driver on:

In general, higher trigger levels reduce CPU load but increase latency, making them suitable for high-throughput, low-interrupt environments. Lower trigger levels minimize latency at the cost of more frequent interrupts, ideal for interactive or real-time applications.