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W83C43 Datasheet(PDF) 8 Page - Winbond

Part # W83C43
Description  KEYBOARD CONTROLLER
Download  21 Pages
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Manufacturer  WINBOND [Winbond]
Direct Link  http://www.winbond.com
Logo WINBOND - Winbond

W83C43 Datasheet(HTML) 8 Page - Winbond

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W83C43
- 8 -
(A) Input Port Definition (AT Mode), continued
BIT
FUNCTION
5
Manufacturing Jumper Installed
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 Inhibit Switch
0: Keyboard inhibited
1: Keyboard not inhibited
(B) Output Port Definition (AT Mode)
BIT
FUNCTION
0
System Reset
1
Gate A20
2
Undefined
3
Undefined
4
Output Buffer Full
5
Input Buffer Empty
6
Keyboard Clock (Output)
7
Keyboard Data (Output)
(C) Test-input Port Definition (AT Mode)
BIT
FUNCTION
0
Keyboard Clock (Input)
1
Keyboard Data (Input)
Status Register (PS/2 Mode)
BIT
BIT FUNCTION
DESCRIPTION
0
Output Buffer Full
0: Output buffer empty
1: Output buffer full
1
Input Buffer Full
0: Input buffer empty
1: Input buffer full
2
System Flag
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.


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