16c95x Serial Port Driver ((better)) [ 480p • 720p ]

The 16C95x family isn't just a bigger FIFO; it includes several advanced features that set it apart:

The 16C95x typically interfaces with the host system via a parallel bus (ISA/PCI local bus) and appears to the system as a set of I/O ports or memory-mapped registers.

series. These drivers are commonly used to enable multi-port RS-232, RS-422, or RS-485 serial communication in industrial, retail, and professional computing environments. Center for Detectors | RIT Core Technical Features 16c95x serial port driver

Due to the high potential data rates (up to 15 Mbps), the CPU must service interrupts very quickly. If the operating system has high interrupt latency, the 128-byte RX FIFO may overflow before the ISR runs. The driver must often utilize a "Low Latency" mode or increase the service thread priority.

If the serial port is not working as expected, consider the following: The 16C95x family isn't just a bigger FIFO;

Before examining the driver, one must understand the hardware enhancements over the 16550:

setserial /dev/ttyS0 uart 16950 setserial /dev/ttyS0 spd_cust divisor 1 Center for Detectors | RIT Core Technical Features

While the 16C95X serial port driver is generally reliable, issues can occur. Here are some common problems and their solutions:

The setserial utility can configure the UART type: