參數(shù)資料
型號(hào): GMS81C2120K
廠商: HYNIX SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: HYNIX SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP42
封裝: SDIP-42
文件頁數(shù): 33/93頁
文件大小: 853K
代理商: GMS81C2120K
GMS81C1404/GMS81C1408
June. 2001 Ver 1.2
31
9.4 Addressing Mode
The GMS81C1404 and GMS81C1408 uses six addressing
modes;
Register addressing
Immediate addressing
Direct page addressing
Absolute addressing
Indexed addressing
Register-indirect addressing
(1) Register Addressing
Register addressing accesses the A, X, Y, C and PSW.
(2) Immediate Addressing
#imm
In this mode, second byte (operand) is accessed as a data
immediately.
Example:
0435
ADC
#35H
E45535
LDM
35H,#55H
(3) Direct Page Addressing
dp
In this mode, a address is specified within direct page.
Example;
C535
LDA
35H
;A
RAM[35H]
(4) Absolute Addressing
!abs
Absolute addressing sets corresponding memory data to
Data, i.e. second byte(Operand I) of command becomes
lower level address and third byte (Operand II) becomes
upper level address.
With 3 bytes command, it is possible to access to whole
memory area.
ADC, AND, CMP, CMPX, CMPY, EOR, LDA, LDX,
LDY, OR, SBC, STA, STX, STY
Example;
0735F0
ADC
!0F035H
;A
ROM[0F035H]
35
A+35H+C
A
04
MEMORY
E4
55
0F100
H
0F101
H
data
55H
~
~
data
0035
H
35
0F102
H
data
35
0035
H
0F551
H
data
A
~
~
C5
0F550
H
07
35
0F100
H
0F101
H
~
~
data
0F035
H
F0
0F102
H
A+data+C
A
address: 0F035
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