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W83977EF-AW Datasheet(PDF) 72 Page - Winbond

Part # W83977EF-AW
Description  WINBOND ISA I/O
Download  142 Pages
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Manufacturer  WINBOND [Winbond]
Direct Link  http://www.winbond.com
Logo WINBOND - Winbond

W83977EF-AW Datasheet(HTML) 72 Page - Winbond

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W83977EF-AW/W83977EG-AW
-70-
8.4 Commands
COMMAND
FUNCTION
20h
Read Command Byte of Keyboard Controller
60h
Write Command Byte of Keyboard Controller
BIT
1
2
3
4
5
6
7
0
BIT DEFINITION
Reserved
IBM Keyboard Translate Mode
Disable Auxiliary Device
Disable Keyboard
Reserve
System Flag
Enable Auxiliary Interrupt
Enable Keyboard Interrupt
A4h
Test Password
Returns 0Fah if Password is loaded
Returns 0F1h if Password is not loaded
A5h
Load Password
Load Password until a "0" is received from the system
A6h
Enable Password
Enable the checking of keystrokes for a match with the password
A7h
Disable Auxiliary Device Interface
A8h
Enable Auxiliary Device Interface
A9h
Interface Test
BIT
04
03
02
01
00
BIT DEFINITION
No Error Detected
Auxiliary Device "Clock" line is stuck low
Auxiliary Device "Clock" line is stuck high
Auxiliary Device "Data" line is stuck low
Auxiliary Device "Data" line is stuck low
AAh
Self-test
Returns 055h if self test succeeds


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