參數(shù)資料
型號: W83C45
英文描述: Keyboard Controller
中文描述: 鍵盤控制器
文件頁數(shù): 11/15頁
文件大小: 89K
代理商: W83C45
W83C42
Publication Release Date: July 1994
- 11 -
Revision A3
COMMANDS
(I/O ADDRESS HEX 64)
COMMAND
FUNCTION
20
Read Command Byte of Keyboard Controller
60
Write Command Byte of Keyboard Controller
BIT BIT DEFINITIONS
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
BIT BIT DEFINITIONS
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
Interface Test
AB
AD
Disable Keyboard Feature
AE
Enable Keyboard Interface
C0
Read Input Port
D0
Read Output Port
D1
Write Output Port
E0
Read Test Inputs
F0-FF
Pulse Output Port
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