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參數資料
| 型號： | W83C45 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | Keyboard Controller(鍵盤控制器) |
| 中文描述： | 鍵盤控制器（鍵盤控制器） |
| 文件頁數： | 11/21頁 |
| 文件大小： | 245K |
| 代理商： | W83C45 |
W83C45
Publication Release Date: November 1996
Preliminary Revision 0.9
- 11 -
AT MODE Commands (I/O Address HEX 64), continued
COMMAND
ABh
FUNCTION
Interface Test
BIT
04
03
02
01
00
BIT DEFINITION
No Error Detected
K/B Clock Line is Stuck Low
K/B Clock Line is Stuck High
K/B Data Line is Stuck Low
K/B Data Line is Stuck High
ADh
AEh
C0h
C1h
C2h
C3h
C4h
Disable Keyboard Feature
Enable Keyboard Interface
Read the input Port(P1) and send data to the system
Continuously puts the lower four bits of Port1 into STATUS register
Continuously puts the upper four bits of Port1 into STATUS register
Make P25(MIRQ) tri-state by writing this command twice consecutively
Make P25(MIRQ) released from tri-state by writing this command twice
consecutively
Send Port2 value to the system
Only set/reset GateA20 line based on the system data bit 1
Send data back to the system as if it came from keyboard
Reports the state of the test inputs
F0h-FFh, Pulse only RC(the reset line) low for 6
μ
S if Command byte is
even
D0h
D1h
D2h
E0h
FXh
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