KBD43W13 Ver la hoja de datos (PDF) - SMSC -> Microchip

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KBD43W13

Keyboard and PS/2 Mouse Controller

SMSC -> Microchip 

Status Register (PS/2 Mode)

BIT

BIT FUNCTION

0

Output Buffer Full

1

Input Buffer Full

2

System Flag

3

Command/Data

4

Inhinit Switch

5

Auxiliary Device Output Buffer

6

General Purpose Time-out

7

Parity Error

DESCRIPTION

0: Output buffer empty

1: Output buffer full

0: Input buffer empty

1: Input buffer full

This bit may be set to 0 or 1 by writting to the

system flag bit in the command byte of the keyboard

controller. It is set to 0 after a power-on reset.

0: Data byte

1: Command byte

0: Keyboard is inhibited

1: Keyboard is not inhibited

0: Auxiliary device output buffer empty

1: Auxiliary device output buffer full

0: No time-out error

1: Time-out error

0: Odd parity

1: Even parity (error)

Input Port Definition

BIT

FUNCTION

0

Keyboard Data Input

1

Mouse Data Input

2

Undefined

3

Undefined

4

RAM on System Board

0: Disable second 256 KB of system board RAM

1: Enable second 256 KB of system board RAM

5

Manufacturing Jumper

0: Manufacturing jumper

1: Jumper not installed

6

Display Type Switch

0: Primary display attached to color/graphics

1: Primary display attached to monochrome

7

Keyboard Input Switch

0: Keyboard inhibited

1: Keyboard not inhibited

10

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