Интерфейсная плата Microsoft InPort Mouse/Keyboard Adapter, ISA

Описание и характеристики

A bus mouse is a variety of PC computer mouse which is attached to the computer using a specialized interface (originally, the Microsoft InPort interface developed for Microsoft's original mouse product).

In the late 1980s, mice were not integrated with IBM-compatible personal computers, and the specialized bus interface (implemented via an ISA add-in card) was one of two popular ways to connect a mouse. (Serial interfaces, common on engineeringworkstations, were the other method.) When the IBM PS/2 was introduced, it included amotherboard mouse interface which was integrated with the keyboard controller (still called the PS/2 mouse interface long after the PS/2 brand was withdrawn); this fairly quickly drove the bus mouse design out of the marketplace.

The bus mouse lived on in the NEC PC-98 family of personal computers in Japan.

Designer      Microsoft

General specifications

External        Yes

Pins                9

Data

Data signal 3 button state signals and quadrature signals for mouse movement

Pin out

Pin 1          SW 2           Mouse button 2                   

Pin 2          SW 3           Mouse button 3                   

Pin 3          GND           Ground                               

Pin 4          XB               X position                           

Pin 5          YA              Y position                           

Pin 6          YB               Y position                           

Pin 7          SW1            Mouse button 1                   

Pin 8          +5 V            Power                                 

Pin 9          XA              X position                           

XA/XB and YA/YB indicate movement and direction based on quadrature phase.