W83C43 Datasheet, PDF (10/21 Pages) Winbond – KEYBOARD CONTROLLER

Output Port Definition, continued
BIT
FUNCTION
4
Keyboard Output Buffer Full Interrupt
5
Mouse Output Buffer Full Interrupt
6
Keyboard Clock Output
7
Keyboard Data Output
Test-input Port Definition
BIT
0
Keyboard Clock Input
1
Mouse Clock Input
FUNCTION
Commands (I/O Address HEX 64) (AT Mode)
COMMAND
20
60
FUNCTION
Read Command Byte of Keyboard Controller
Write Command Byte of Keyboard Controller
BIT
BIT DEFINITION
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
AB
Interface Test
BIT
BIT DEFINITION
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
AD
Disable Keyboard Feature
AE
Enable Keyboard Interface
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W83C43