參數(shù)資料
型號: APPLICATIONNOTES
英文描述: Application Notes - Pentium Pro Processor Performance Brief
中文描述: 應(yīng)用筆記-奔騰Pro處理器的性能簡介
文件頁數(shù): 4/4頁
文件大?。?/td> 39K
代理商: APPLICATIONNOTES
1997
7-73
Application Note 2
Micrel
7
3 TO 8
DECODER
OUTPUT
ONE OF 8 CHANNELS
Figure 5. Block Diagram of Logic Circuitry
C
in
B
in
A
in
Q
CLR
CLR
OE
D
DATA
CS
10 REM MIC4807 CONTROL PROGRAM
20 GOSUB 3000
30 REM A=1,B=2,C=4,DATA=8,CS=16,CLR=32
100 A$=INKEY$:IF A$="" THEN GOTO 100 ELSE
LET A=ASC(A$)-49
110 IF A=-36 THEN GOSUB 3000
120 IF A=14 THEN GOSUB 2000
130 IF A<0 OR A>7 THEN GOTO 100
1000 D(A)=8-D(A)+2*A+96:REM TOGGLE OUTPUT
1010 GOSUB 4000
1020 GOTO 100
2000 REM "" TURNS ON ALL OUTPUTS FOR TEST
2010 FOR A=0 TO 7
2020 OUT 8,A+56:OUT 8,A+40:OUT 8,A+56
2030 NEXT A
2040 IF INKEY$="" THEN GOTO 2040
2050 FOR A=0 TO 7:GOSUB 4000:NEXT A
2060 RETURN
3000 REM CLEAR DISPLAY AND MEMORY
3010 OUT 8,16:OUT 8,48
3020 FOR A=0 TO 7:D(A)=A+48:NEXT A
3030 RETURN
4000 REM COMMUNICATIONS DRIVER
4010 OUT 8,D(A):OUT 8,D(A)-16:OUT 8,D(A)
4020 RETURN
9999 END
Figure 4. MIC4807 Control Program Listing
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