參數(shù)資料
型號: HMS81C2020AQ
廠商: Electronic Theatre Controls, Inc.
英文描述: CMOS Single-Chip 8-Bit Microcontroller with A/D Converter & VFD Driver
中文描述: CMOS單芯片8位微控制器與A / D轉(zhuǎn)換器
文件頁數(shù): 38/107頁
文件大?。?/td> 1482K
代理商: HMS81C2020AQ
HMS81C2012A/2020A
34
SEP. 2004 Ver 2.00
D500FA
LDA
!0FA00H+Y
(6) Indirect Addressing
Direct page indirect
[dp]
Assigns data address to use for accomplishing command
which sets memory data (or pair memory) by Operand.
Also index can be used with Index register X,Y.
JMP, CALL
Example; G=0
3F35
JMP
[35H]
X indexed indirect
[dp+X]
Processes memory data as Data, assigned by 16-bit pair
memory which is determined by pair data
[dp+X+1][dp+X] Operand plus
X-register data in Direct
page.
ADC, AND, CMP, EOR, LDA, OR, SBC, STA
Example; G=0, X=10
H
1625
ADC
[25H+X]
Y indexed indirect
[dp]+Y
Processes memory data as Data, assigned by the data
[dp+1][dp] of 16-bit pair memory paired by Operand in Di-
rect page
plus Y-register data.
ADC, AND, CMP, EOR, LDA, OR, SBC, STA
Example; G=0, Y=10
H
1725
ADC
[25H]+Y
Absolute indirect
[!abs]
The program jumps to address specified by 16-bit absolute
address.
JMP
Example; G=0
D5
0F100H
data
A
~
~
data
0FA55H
0FA00H+55H=0FA55H
FA
0F102H
00
0F101H
0A
35H
jump to
address 0E30AH
~
~
35
0FA00H
E3
36H
3F
0E30AH
NEXT
~
~
05
35H
0E005H
~
~
25
0FA00H
E0
36H
16
0E005H
data
~
~
A + data + C
A
25 + X(10) = 35H
05
25H
0E005H + Y(10)
= 0E015H
~
~
25
0FA00H
E0
26H
17
0E015H
data
~
~
A + data + C
A
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