The multiple 8255 I/O card is a programmable peripherals interface for PC/XT, PC/AT or compatibles. The interface card provides 192 parallel input/output (PIO) programmable line, and 16 independent 16 bits counter/clock.

4 Features of the Multi-8255 I/O Card
*Programmable I/O control functions.
*Up to 192 parallel I/O lines.
*Maximum of 2.35 MHZ count rate.
*6 independent 16 bits counters.
*Support several operating modes that are programmable.
*Port address selectable