|The first UART in this line. It doesn't contain any scratch
8250A is a modernized version of 8250, its bus operating speed
is very fast.
|The bus operating speed of this UART is greater than 8250's. It is
used in the same way as 16450 in the sphere of software.
|Very similar to that of the 8250 UART.
|Used in AT's (Improved bus speed over 8250's). Works stable at 38.4KBPS.
|This line is the first generation of buffered UART. This line has 16-byte
buffer, however it doesn't work
and is replaced with the 16550A.
|This line is the most widespread UART version used for high-speed
connection of modems with 14.4KBPS and 28.8KBPS rates. They made sure the FIFO buffers worked on this
|New generation of UART. Contains 32 bytes of FIFO, programmed
register of X-On/X-Off characters and supports power management.
|Produced by Texas Instruments. Contains 64-byte FIFO buffer.