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W83627DHG
Publication Release Date: Aug, 22, 2007
-161- Version
1.4
Commands, continued
COMMAND
FUNCTION
A4h Test
Password
Returns 0Fah if Password is loaded
Returns 0F1h if Password is not loaded
A5h Load
Password
Load Password until a logical 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
ABh Interface
Test
BIT
04
03
02
01
00
BIT DEFINITION
No Error Detected
Keyboard "Clock" line is stuck low
Keyboard "Clock" line is stuck high
Keyboard "Data" line is stuck low
Keyboard "Data" line is stuck high
ADh
Disable Keyboard Interface
AEh
Enable Keyboard Interface
C0h
Read Input Port (P1) and send data to the system
C1h
Continuously puts the lower four bits of Port1 into the STATUS register
C2h
Continuously puts the upper four bits of Port1 into the STATUS register
D0h
Send Port 2 value to the system
D1h
Only set / reset GateA20 line based on system data bit 1
D2h
Send data back to the system as if it came from the Keyboard
D3h
Send data back to the system as if it came from Auxiliary Device
D4h
Output next received byte of data from system to Auxiliary Device
E0h Reports
the
status of the test inputs
FXh
Pulse only RC (the reset line) low for 6
μ
s if the Command byte is even
Summary of Contents for W83627DHG
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