KBD42W11 View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

Manufacturer

KBD42W11

Keyboard Controller

SMSC -> Microchip 

COMMANDS (I/O ADDRESS HEX 64)

COMMAND

20

60

FUNCTION

Read Command Byte of Keyboard Controller

Write Command Byte of Keyboard Controller

BIT BIT DEFINITIONS

7

Reserved

6

IBM PC Compatible Mode

5

IBM PC Mode

4

Disable Keyboard

3

Inhibit Override

2

System Flag

1

Reserved

0

Enable Output Buffer Full Interrupt

AA

Self-test

BIT BIT DEFINITIONS

00

No Error Detected

01

K/B Clock Line is Stuck Low

02

K/B Clock Line is Stuck High

03

K/B Data Line is Stuck Low

04

K/B Data Line is Stuck High

AB

AD

AE

C0

D0

D1

E0

F0-FF

Interface Test

Disable Keyboard Feature

Enable Keyboard Interface

Read Input Port

Read Output Port

Write Output Port

Read Test Inputs

Pulse Output Port

12

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