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Information About

Bus Mouse




  type Computer Mouse input port
  caption A Microsoft InPort bus mouse adapter, in the form of a 8-bit ISA (XT-bus) card
  designer Microsoft
  design Date late 1980s
  production Date 1980s to 2000
  superseded DE-9 Connector
  superseded By PS/2 Connector , USB
  superseded By Date 2000
  external Yes
  data Signal 3 button state signals and quadrature signals for mouse movement
  num Pins 9
  pin1 Mouse button 2
  pin1 Name SW 2
  pin2 Mouse button 3
  pin2 Name SW 3
  pin3 Ground
  pin3 Name GND
  pin4 X position
  pin4 Name XB
  pin5 Y position
  pin5 Name YA
  pin6 Y position
  pin6 Name YB
  pin7 Mouse button 1
  pin7 Name SW1
  pin8 Power
  pin8 Name +5 V
  pin9 X position
  pin9 Name XA
  pinout Notes XA/XB and YA/YB indicate movement and direction based on quadrature phase


A bus mouse is a variety of PC 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 engineering Workstation s, were the other method.) When the IBM PS/2 was introduced, it included a Motherboard 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which was integrated with the Keyboard controller (still called the PS/2 Mouse interface long after the PS/2 brand was withdrawn); this fairly quickly drove the bus mouse design out of the marketplace.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 lives on in the NEC PC-98 family of personal computers in Japan.


EXTERNAL LINKS

  • http://www.ardent-tool.org.uk/ohland/mouse.html