NS16550A Datasheet | National Semiconductor

.. Accessing the NS16550A UART in the PS 2 Model 50 60 70 and 80 Accessing the NS16550A UART in the PS 2 Model 50 60 70 and 80 INTRODUCTION This paper reviews fundamental concepts of the Micro Channel Architecture and their relation to the NS16550A UART All 4 of the PS 2 personal puters reviewed use the NS16550A for asynchronous serial munication The first part is an overview of the PS 2 system board and Micro Channel Architecture (MCA) in the Models 50 60 70 and 80 personal puters The next part explains the basic configuration and system initialization procedures for the UART that occur after power-up The last part describes the overall interrupt procedure and...